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Resolution No. 2010-058RESOLUTION NO. 2010-58 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF VERNON APPROVING SEWER SYSTEM MANAGEMENT PLAN (SSMP) VOLUME I AND APPENDIX "0" OF SSMP VOLUME II IN COMPLIANCE WITH THE STATEWIDE GENERAL WASTE DISCHARGE REQUIREMENTS FOR SANITARY SEWER SYSTEMS WHEREAS, on May 2, 2006, the State Water Resources Control Board (the "Board") adopted Order No. 2006-0003 for Statewide General Waste Discharge Requirements ("WDR") for Sanitary Sewer Systems and the accompanying Monitoring and Reporting Program with the goals of reducing the number and volume of sewer overflows and to provide for statewide uniform electronic reporting of overflows; and WHEREAS, on October 15, 2007, the City Council of the City of Vernon adopted Resolution No. 9448 approving and adopting the Sewer System Management Plan Development Plan and Schedule prior to the November 2, 2007, deadline in compliance with the WDR; and WHEREAS, on July 27, 2009, the City Council of the City of Vernon adopted Resolution No. 10,026 approving a Sewer System Management Plan ("SSMP") and subparts thereof in compliance with the statewide general waste discharge requirements for sanitary sewer systems; and WHEREAS, the System Evaluation and Capacity Assurance Plan ("SECAP") section of the SSMP required that the City develop a schedule and capital improvement plan; and WHEREAS, the SECAP section of the SSMP allowed for a tentative plan to be in place with its adoption in July of 2009; and WHEREAS, the SECAP section of the SSMP may be revised periodically to illustrate future changes in the City's capital improvement plans and scheduling, and City staff has recently revised the SECAP to reflect such changes; and WHEREAS, by memo dated May 11, 2010, the Director of Community Services & Water has recommended that the revised SSMP Volume I and Appendix "0" of SSMP Volume II be approved. NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF VERNON AS FOLLOWS: SECTION 1: The City Council of the City of Vernon hereby finds and determines that the recitals contained hereinabove are true and correct. SECTION 2: The City Council of the City of Vernon hereby approves and adopts the revised Sewer System Management Plan Volume I, attached hereto as Exhibit A, and revised Appendix "0" of the Sewer System Management Plan Volume II, attached hereto as Exhibit B. SECTION 3: The City Council of the City of Vernon hereby authorizes the City Administrator, or his designee, to take whatever actions are deemed necessary or desirable for the purpose of implementing and carrying out the purposes of this Resolution. _2_ SECTION 4: The City Clerk of the City of Vernon shall certify to the passage, approval and adoption of this resolution, and the City Clerk of the City of Vernon shall cause this resolution and the City Clerk's certification to be entered in the File of Resolutions of the Council of this City. APPROVED AND ADOPTED this 17th day of May, 2010. ATTEST: Will rd G. Yama u hi, ity Clerk Name: Hilario Gonzales Title: Mayor / '3i-ay-er---Pr-G- - 3 - STATE OF CALIFORNIA ) ) ss COUNTY OF LOS ANGELES ) I, Willard G. Yamaguchi, City Clerk of the City of Vernon, do hereby certify that the foregoing Resolution, being Resolution No. 2010-58, was duly passed, approved and adopted by the City Council of the City of Vernon at a regular meeting of the City Council duly held on Monday, May 17, 2010, and thereafter was duly signed by the Mayor or Mayor Pro-Tem of the City of Vernon. Executed this & day of May, 2010, at Vernon, California. (SEAL) { 4 EXHIBIT A li,ifrasiructure Efigirieet-kig Corporation City of Vemon Sewer System management Plan Volume I FINAL REPORT Prepared for: City of Vernon 4305 Santa Fe Ave. Vernon, CA 90058 March 2010 Prepared by: Infrastructure Engineering Corporation 27247 Madison Ave., Suite 111 Temecula, CA 92590 27247 Madison Ave., Suite 111, Temecula, CA, 92590 T 951.296.0355 F 951.296,2456 WWW,iecoi,poration.com TABLE OF CONTENTS ABBREVIATIONS/ACRONYMS..............................................................................................3 ExECUTIVESUMMARY.........................................................................................................4 CHAPTER 1. PROHIBITIONS AND PROVISIONS ..................................................................5 1.1 PROHIBITIONS ........................... .................. ...... :..... 5 ......... .... ......... 1.2 PROVISIONS....:...........:......:...:....................:.......:.........:...............................:.:................5 CHAPTER 2. GOALS AND ORGANIZATIONAL STRUCTURE..................................................10 2.1 GOALS................:...........................................................................................................10 2.2 ORGANIZATIONAL STRUCTURE................................................................................. 10 2.2.1 Compliance Summary......................................................:................................................. 10 2.2.2 Compliance Documents..................................................................................................... 11 2.2.3 Document Descriptions... ........: ...... .................................................................... 11 2.2.3.1 Community Sertices and Health Department Organisation Charts (Appendix B) ............ 11 2.2.3.2 Telephone Directory (Appendix C)................................................................................... 13 2.2.3.3 City of Vernon Fire Department Standard Operating Procedures (Appendix D) .,............ 13 2.2.3.4 Sanitary Seaver Overflow Response Plan (Appendix E).................................................... 13 CHAPTER 3: OVERFLOW EMERGENCY RESPONSE PLAN....................................................15 3.1 COMPLIANCE SUMMARY............................................................................................. 16 3.2 COMPLIANCE DOCUMENTS......................................................................................... 17 3.3 DOCUMENT DEsCMPnoN........:.............:...:................................................................ 18 3.3.1 Sanitary Sewer Overflow Response Plan (Appendix E) ................ CHAPTER 4: DESIGN AND PERFORMANCE PROVISIONS..................................................... 21 4.1 COMPLIANCE SUMMARY............................................................................................. 21 4.2 COMPLIANCE DOCUMENTS......................................................................................... 22 4.3 DOCUMENT DESCRIP770Ns..................................................:...................................... 22 4.3.1 Portions of the Municipal Code of the City of Vernon (Appendix F)................................ 22 4.3.2 City of Vernon Standard' Drawings- (Appendix G)......:....... 4.3.3 Los Angeles County Department of Public Works Standard Drawings (Appendix H)..... 22 4.3.4 Standard Specifications for Public,Works Construction(Greenbook)................................. 23 CHAPTER 5. LEGAL AUTHORITY........................................................................................24 5.1 COMPLIANCE SUMMARY .................................................... :........................................ 24 5.2 COMPLIANCE DOCUMENTS..................:...................................................................... 26 5.3 DOCUMENT DESCPJP170NS......................................................................................... 26 5.3.1 Portions" of the Municipal Code of the City of Vernon (Appendix F)................................ 26 5.3.2 City of Vernon Standard Drawings (Appendix G)...::.... ......... 27 5.3.3 Los Angeles County Department of Public Works Standard Drawings (Appendix H)..... 27 5.3.4 LACSD Industrial Waste Discharge Permit Requirements (Appendix I) ........................ 27 5.3.5 LACSD Wastewater Ordinance (Appendix J)................................................................ 28 5.3.6 Standard Specifications for Public tr1orks Construction (Greenbook)............... CHAPTER 6.OPERATION AND MAINTENANCE PROGRAM................................................29 6.1 COMPLIANCE SUMMARY............................................................................................. 29 6.2 COMPLIANCE DOCUMENTS...........................:............................................................. 31 6.3 DOCUMENT DESCRIP77ONS......................................................................................... 31 6.3.1 Map and Table of Existing Wastewater Facilities, (Appendix K).................................... 31 6.3.2 Map of Sewer System Areas of Interest (Appendix L)...................................................... 32 City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 2 of 46 CHAPTER 7. FATS, OILS AND GREASE (FOG) CONTROL PROGRAM...................................33 7.1 COMPLIANCE SUMMARY ........................ .......... 33 7.2 C0MPLL4NCE DOCUMENTS... ....... 35 ........... 7.3 DocumF—NT DESCRIMON.... 7.3.1 Poations of the Municipal Code of the City of Vernon (Appendix F)...;............................ 36 7.3.2 City of Vernon Standard Draavin s A endix 7.3.3 Los Angeles County Department of Public Works Standard Dramin�s (Appendix H)..... 36 7.3.4 LACSD Wastewater Ordinance A endax ( pp ' J)......................................................... ...37 7.3.5 Map and List of Sewer Areas of Interest (Appendix L ................................................... 37 7.3.6 Independent Collectionl Disposal Service Vendor List (Appendix M) ............................... 37. 7.3.7 Public Outreach for FOG Control (Appendix 1V)........................................................37 7.3. 8 Standard Specifications for Public Works Construction (Greenbook)................................. 38 CHAPTER 8. SYSTEM EVALUATION AND CAPACITY ASSURANCE PLAN...............................39 8.1 COMPLIANCE SUMMARY........ ..................................... .......... . 8.2 COMPLMNCE DOCUMENTS ... DocUMENT DESCRIPTIONS.... ...... 8.3 .......................................................................... 40 8.3.1 2008 Seaver System HydraulicAnalysis (Appendix O)....................................................40" CHAPTER 9. MONITORING, MEASUREMENT, AND PROGRAM MODIFICATIONS ................42 9.1 COMPLIANCE SUMMARY......... ........................ 42 9.2 COMPLIANCE DOCUMENTS.:................................................. 44 ....................................... 9.3 DOCUAMW DESCRIPTIONS...., ............. 44 ..... ..... ......... ................................ 9.3.1 Map and List of Seaver Areas of Interest (Appendix L) 44 ................................... CHAPTER 10. SSMP PROGRAM AUDITS ..........:.......... .........................45 10.1 COMPLIANCE SUMMARY.. 10.2 ....... 45 COMPLIANCE DOCUMENTS :...........................................:. 45 ........................................... 10.3 DOCUMENT DESCRTPT70NS................... .... .. 45 CHAPTER 11. COMMUNICATION PROGRAM ...................... ..................................................46 11.1 COMPLIANCE SUAJMARY................ :..................................................................... 11.2 ....... 4G COMPLIANCE DOCUMENTTs............................... .................. 46 11.3 DOCUMENT DESCRIPTIONS ............................. 46 NOTE: APPENDICES ARE LOCATED IN VOLUME II OF THIS PLAN. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 3 of 46 ABBREVIATIONS /ACRONYMS BMP Best Management Practice CMMS Computerized Maintenance Management System CMOM Capacity, Management, Operations and Maintenance CPI Capital Improvement Program CWEA California Water Environment Association Environmental Compliance Services EDU Equivalent Dwelling Unit FOG Fats, Oils, Grease GIS Geographical Information.System IEC Infrastructure Engineering Corporation I/I Inflow / Infiltration LACSD Sanitation Districts of Los Angeles County MRP Monitoring and Reporting Plan NPDES National Pollution Discharge Elimination System OERP Overflow Emergency Response Plan O&M Operation and Maintenance PM Preventative Program PVC Polyvinyl Chloride RA&S Regional Assets and Services Department SSMP Sewer System Management Plan SSO Sanitary Sewer Overflows SWRCB State of California Water Resources Control Board WDR Waste Discharge Requirements City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 4 of 46 EXECUTIVE SUMMARY On May 2, 2006, after several years of public discussion and planning, the State Water Resources Control Board (SWRCB) adopted Order No. 2006-0003, a General Waste Discharge Requirement (WDR) for all publicly owned sanitary sewer collection systems in California with more than one (1) mile of sewer pipe. The goal of Order No. 2006-0003 is to provide a consistent statewide approach for reducing Sanitary Sewer Overflows (SSOs) by requiring that: 1. In the event of an SSO, all feasible steps be taken to control the released volume and prevent untreated wastewater from entering storm drains, creeks, etc. 2. If an SSO occurs, it must be. reported to the SWRCB using an online reporting system developed by the SWRCB. 3. All publicly owned collection system agencies with more than 1 mile of sewer pipe in the State must develop a Sewer System Management Plan (SSMP). This critical component of Order No. 2006-0003 is the development of a Sewer System Management Plan (SSMP). There are eleven specific "milestones" identified in the schedule that relate to the elements required in the WDR. The eleven milestones, and the applicable schedule for the City, include: 1: SSMP Development'Plan and Schedule (November 2, 2007) 2. Goals and Organization Structure (November 2, 2007) 3. Legal Authority (May 2, 2009) 4. Operation and Maintenance Program (May 2, 2009) 5. Design and Performance Standards (August 2, 2009) 6. Overflow Emergency Response Program (May 2, 2009) 7. Fats, Oils and Grease Control Program (May 2, 2009) 8. System Evaluation and Capacity Assurance Plan (August 2, 2009) 9. Monitoring, Measurement, and Program Modifications (August 2, 2009) 10. SSMP Program Audits (August 2, 2009) 11. Communication Program (August 2, 2009)- 12. Final SSMP, incorporating all the SSMP elements. (August 2, 2009) City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 5 of 46 CHAPTER 1. PROHIBITIONS AND PROVISIONS The State Water Resources Control Board (SWRCB) Order No. 2006-0003 mandates that the City of Vernon (City) comply with the following discharge prohibitions and provisions. 1.1 PROHIBMONS To meet the provisions contained in Division 7 of the California Water Code and. regulations AGO peed there under, the City is required to comply with the following prohibitions: o Any SSO that results in a discharge of untreated or partially treated wastewater to waters of the United States is prohibited; and, o Any SSO that results in a discharge of untreated or partially treated wastewater that creates a nuisance as defined in California Water Code Section 13050(m) is prohibited. In any enforcement action, the Regional Board will consider the efforts of the City to contain, control, and clean up sewage spills from its collection system in accordance with Section 13327 of the California Water Code. The City will make every effort to contain sewage spilled from its collection systems and to prevent the sewage from entering storm drains and surface water bodies. The City will also make every effort to prevent sewage from discharging from storm drains into flood control channels and open ditches by blocking the storm drainage system and by removing the sewage from the storm drains. The use of the storm drain pipe system to contain the sewage by blocking the drain pipes, and recovering and cleaning up the spilled sewage, in order to prevent the sewage from being discharged to a surface water body is not a violation of the prohibitions listed above. 1.2 PROVISIONS As stated in Order No. 2006-0003, the City must meet the following fifteen (15)'provisions: 1. The City must comply with all conditions of Order No. 2006-0003. Any noncompliance with Order No. 2006-0003 constitutes a violation of the California Water Code and is grounds for enforcement action. 2. It is the intent of the State Water Board that sanitary sewer systems be regulated in a manner consistent with the general WDRs. Nothing in the general WDRs shall be: a. Interpreted or applied in a manner inconsistent with the Federal Clean Water Act, or supersede a more specific or more stringent state or federal requirement in an existing permit, regulation, or administrative/judicial order or Consent Decree; b. Interpreted or applied to authorize an SSO that is illegal under either the Clean Water Act, an applicable Basin Plan prohibition or water quality standard, or the California Water Code; City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 6 of 46 c. Interpreted or applied to prohibit a Regional Water Board from issuing an individual NPDES permit or WDR, superseding this general WDR, for a sanitary sewer system, authorized under the Clean Water Actor California Water Code; or d. Interpreted or applied to supersede any more specific or more stringent WDRs or enforcement order issues by a Regional Water Board. 3. The City shall take all feasible steps to eliminate SSOs. In the event that an SSO does occur, the City shall take all feasible steps to contain and mitigate the impacts of an SSO. 4. In the event of an SSO, the City shall take all feasible steps to prevent untreated or partially treated wastewater from discharging from storm drains into flood control channels or waters of the United States by blocking the storm drainage system and by removing the wastewater from the storm drains. 5. All SSOs must be reported in accordance with Section G of the general WDRs. 6. =hn any enforcement action, the State and/or Regional Water Boards will consider the appropriate factors under the duly adopted State Water Board Enforcement Policy. And; consistent with the Enforcement Policy, the State and/or Regional Water Boards must consider the City's efforts `to contain, control, and mitigate SSOs when considering=the California Water Code Section 13327 factors. In assessing these factors, the State and/or Regional Water Boards will also consider whether: a. The City has complied with the requirements of Order No. 2006-0003, including requirements for reporting, developing and implementing a SSMP; b. The City can. identify the cause or likely cause of the discharge event; c. There were no feasible alternatives to the discharge, such as temporary storage or retention of untreated wastewater, reduction of inflow and infiltration, use of adequate backup equipment, collecting and hauling of untreated wastewater to a treatment facility; or an increase in the capacity of the system as necessary to contain the design storm event identified in the SSMP. It is inappropriate to consider the lack of feasible alternatives if the City does not implement a periodic Of continuing process to identify and correct problems. d. The discharge was exceptional, unintentional, temporary, and caused by factors beyond the reasonable control of the City; e. The discharge could have been prevented by the exercise of reasonable control described in a certified SSMP for: I. Proper management, operation and maintenance; City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 7 of 46 ii. Adequate treatment facilities, sanitary sewer system facilities, and/or components with an appropriate design capacity, to reasonably prevent SSOs (e.g., adequately enlarging treatment or collection facilities to accommodate growth, infiltration and inflow (I/I), etc.); iii. Preventative maintenance (including cleaning and fats, oils, and grease (FOG) control); iv. Installation of adequate backup equipment; and V. Inflow and infiltration prevention and control to .the extent practicable. f. The sanitary sewer system design capacity is appropriate to reasonably prevent SSOs. g. The City took all reasonable steps to stop and mitigate the impact of the discharge as soon as possible. 7. When a sanitary sewer overflow occurs, the City shall take all feasible steps and necessary remedial actions to 1) control or limit the volume of untreated or partially treated wastewater discharged, 2) terminate the discharge, and 3) recover as much of the wastewater discharged as possible for proper disposal, including any wash down water. The City shall implement all remedial actions to the extent they may be applicable to the discharge and not inconsistent with an emergency response plan, including the following: a. Interception and rerouting of untreated or partially treated wastewater flows around the wastewater, line failure; b. Vacuum truck recovery of sanitary sewer overflows and wash down water; c. Cleanup of debris at the overflow site; d. System modifications to prevent another SSO at the same location; e. Adequate sampling to determine the nature and impact of the release; and f.. Adequate public notification to protect the public from exposure to the SSO. 8. The City shall properly manage, operate, and maintain all parts of the sanitary sewer system owned or operated by the City, and shall ensure that the system operators (including employees, contractors, or other agents) are adequately trained and possess adequate knowledge, skills, and abilities. 1W City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 8 of 46 9. The City shall allocate adequate resources for the operation, maintenance, and repair of its sanitary sewer system, by establishing a proper rate structure, accounting mechanisms, and auditing procedures to ensure an adequate measure of revenues and expenditures. These procedures must be in compliance. with applicable laws and regulations and comply with generally acceptable accounting practices. 10. The City shall provide adequate capacity to convey base flows and peak flows, including flows related to wet weather events. Capacity shall meet or exceed the design criteria as defined in the City's System Evaluation and Capacity Assurance Plan for all parts of the sanitary sewer system owned or operated by the City. 11. The City shall develop and implement a written Sewer System Management Plan (SSMP) and make it available to the State and/or Regional Water Board upon request. A copy of this document must be publicly available at the City's office and/or available on the internet. This SSMP must be approved by the City's Board of Directors at a public meeting. 12. In accordance with the California Business and Professions Code sections 6735, 7835, and - 7835.1, all engineering and geologic evaluations and judgments shall be performed by or under the direction of registered professionals competent and proficient in the fields pertinent to the required activities. Specific elements of the SSMP that require professional evaluation and judgments shall be prepared by or under the direction of appropriately qualified professionals, and shall bear the professional(s)' signature and stamp. 13. The mandatory elements of the SSMP are,specified below, and must be approved 'by the deadlines listed in Order No. 2006-0003. a. Goal b. Organization c. Legal Authority d. Operation and Maintenance Program e. Design and Performance Provisions f. Overflow Emergency Response Plan g. FOG Control Program h. System Evaluation and Capacity Assurance Plan i. Monitoring, Measurement, and Program Modifications j. SSMP Program Audits k. Communication Program 14. Both the SSMP and the City's program to implement the SSMP must be certified by the City to be in compliance with the requirements set forth above and must be presented to the City's Board of Directors for approval at a public meeting. The City shall certify that the SSMP, and subparts thereof, are in compliance with the general WDRs within the time &ames,identified in the time schedule provided in subsection D.15, below. In order to complete this certification, The City's authorized representative must complete the certification portion in the Online SSO Database Questionnaire by checkingthe appropriate milestone box, printing and signing the automated form, and sending the form to: State Water Resources Control Board Division of Water Quality Attn: SSO Program Manager P.O. Box 100 Sacramento, CA 95812 The SSMP must be updated every five (5) years, and must include any significant program changes. Re -certification by the Board of Directors of The City is required in accordance with D.14 when significant updates to the SSMP are made. To complete the re -certification process, The City shall enter the .data in the Online SSO Database and mail the form to the State Water Board, as described above. 15. The City shall comply with these requirements according to the legislated' schedule. This time schedule does not supersede existing requirements or time schedules associated with other permits or regulatory requirements. Id City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 10 of 46 CHAPTER 2. GOALS AND ORGANIZATIONAL STRUCTURE The City's Goals and Organization Structure addresses those mandatory SSMP provisions outlined in Section D, 13 (i) Goals and (ii) Organization of SWRCB Order No. 2006-0003. 2.1 GOALS The goal of this SSMP is to provide a plan and schedule to properly manage, operate, and maintain all parts of the City's sanitary sewer collection system, in order to reduce and prevent, Sanitary Sewer Overflows (SSO's), as well as mitigate any SSO's that do occur. Accordingly, the SSMP will satisfy the requirements of SWRCB Order No. 2006-0003. This Order is attached as Appendix A. The following specific performance indicator goals have also been identified: o Inspect 33% of all Interceptors annually; o Clean 50% of all gravity mains annually; o Conduct a CCTV video inspection of all Fats, Oils and Grease (FOG) hot spots and areas of interest, as identified in Appendix L, every five years; o Develop standard drawings for Sand and Grease Interceptors. 2.2 ORGANIzATIONAL STRUCTURE The City's Organization Structure encompasses the following components: (1) The name of the responsible or authorized representative for the City, as described in Section J of SWRCB Order No. 2006-0003; (2) The names and telephone numbers for management, administrative and maintenance positions responsible for implementing specific measures in the SSMP, including clearly identifiable lines of authority; and (3) The chain of communication, from notification to reporting of SSO's, which identifies the person responsible for reporting SSO's to the State and Regional Water Boards, and other applicable agencies. 2.2.1 Compliance Summary The City maintains a Goals and Organization Structure which meets the requirements of Section D, 13 (i) Goals and (ii) Organization of SWRCB Order No. 2006-0003: (1) Scott Rigg, the Public Works and Water Superintendent, is the authorized representative for the City, as described in Section J of SWRCB Order No. 2006-2003; City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 11 of 46 (2) The names and lines of authority for management, administrative and maintenance positions responsible for implementing specific measures in the SSMP are presented in the City's Community Senvces Department and Health Department Organi.Zational Charts, as shown in Appendix B. Phone numbers for these positions are listed in the City's Telephone Directory, attached as Appendix C; and (3) As the primary first responders, the Fire Department will respond to a potential sanitary sewer overflow (SSO) site, and will enlist the assistance of the Community Service Crew. Should the SSO involve hazardous material, the Fire Department will implement'the necessary Standard Operating Procedures (SOP) for the handling of hazardous materials, attached as Appendix D. The Fire Department SOP includes the chain of communication; from notification to reporting of a hazardous material SSO,, including the person responsible for reporting to all appropriate agencies. If there is no hazardous material involved, the Community Services Crew will proceed with containment, clean-up, and restoration, as per the Sanitary Sewer Overflow Response Plan for Community Services, attached as Appendix E. This contains the chain of communication, from notification to reporting of non -hazardous material SSO's, including the person responsible for reporting SSO's to the State and Regional Water Boards. 2.2.2 Compliance Documents The following documents, attached as appendices, support the City's Goals and Organization Structure, thereby allowing the City to comply with the Goals and Organization Structure of the Statewide Waste Discharge Requirement (WDR): - o Community Services and Health Department Organizational Charts, Appendix B. o Telephone Directory, Appendix C. . o City of Vernon Fire Department Standard Operating Procedures, Appendix D. o Sanitary Sewer Overflow Response Plan, Appendix E. 2.2.3 Document Descriptions A description for each compliance document listed above is described below: 2.2.3.1 Community Services and Health Department OManjZgtion Charts (AppendixB) The Community Services Department and Health Department Organizational Charts include the names and lines of authority for management, administrative and maintenance positions responsible for implementing specific measures in the SSMP, excluding hazardous material incidents. A summary for ley positions, including the personnel responsible for responding .to and reporting non -hazardous material SSO's, is presented below: City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 12 of 46 o Director of Community Services and Water Establishes policy, plans strategy, leads staff, allocates resources, delegates responsibility, authorizes outside contractors to perform services, and may serve as public information officer. o Deputy Director of Community Services — Oversees preparation of wastewater collection system planning documents; manages capital improvement delivery system; oversees documentation new and rehabilitated assets; oversees development and implementation of SS MP; provides information updates to City Council; 'and arranges for emergency meetings if necessary. o Public Works and Water Superintendent— Is the authorized representative for the City, as described in Section J of SWRCB Order No. 2006-2003. Accordingly, oversees the SWRCB On Reporting, as well the posting of any necessary public health warnings; manages field operations and maintenance activities, provides relevant information to agency management, prepares and implements contingency plans: o Environmental Specialist of the Health Department - Conducts and logs hazardous material inspections, which may include properties with privately owned Interceptors. o Project Engineer- Prepares wastewater collection system planning documents; documents new and rehabilitated assets; and coordinates development and implementation of SSMP. o Fire Department -Asper their Standard Operating Procedures (SOP), the Fire Department will determine if the reported SSO includes a hazardous material, and if so, they will implement their SOP appropriately. The Fire Department also oversees reporting of the SSO to all. appropriate agencies, excluding the SWRCB On -Line Reporting. o Foreman (or Senior Utilityman on Community Services Crew) - As leader of the Community Services Department Crew, notified by the Non -Emergency `Police Dispatcher when an SSO is reported. If the Fire Department determines that no hazardous material is present, he oversees_ the SSO response. Notifies all other members of the Community Services Department Crew to assist in the SSO response; assesses the SSO and assigns the Stand -By Crew job duties in order to eliminate the overflow. o Utilityman — Member of the Community Services Department Crew. Staff preventive maintenance activities; mobilizes and responds to notification of non -hazardous material stoppages and SSO's (mobilize sewer cleaning equipment, by-pass pumping equipment, and portable generators. o Non -Emergency Police Dispatcher - Will be first notified of an SSO via the 24-Hour Non -Emergency Phone Line, contacts the City of Vernon Fire Department, Community Services Crew and the City's Health Department. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 13 of 46 2.2.3.2 Tehe hone Directory (A�pendix C) The City's Telephone Directory includes numbers for those management, administrative and maintenance positions responsible for implementing specific measures in the SSMP. .2.2.3.3 QU of Vernon Fire DEpartment Standard Operating Procedures (Appendix D ) As per their Standard Operating Procedures (SOP), the. Fire Department will determine if the . rortcd SSO includes a hazardous material, and if so, they will implement their SOP appropriately. The Fire Department SOP includes the chain of communication, from notification to reporting of a hazardous material SSO, including the person responsible for reporting to applicable agencies. 2.2.3.4 Sanitary Seiner Overflow Re tone Plan (Ati)endix E The City's chain of communication for reporting non -hazardous material SSO's is described in detail in the City's Sanitag Seiner Overj7bw Response Plan. The purpose of the Sanitary Seiner Overfloz, Response Plan is to minimize the impact of SSO's to the public and the environment, in a manner which also provides for the safety of City personnel. All sanitary sewer overflows are responded to in a timely manner to expedite the necessary steps to relieve the overflow. This response plan is the guideline for the standard operating procedures in the event of a non- hazardous material SSO, including relieving the sewage blockage and spill containment. The response plan is reviewed periodically to ensure that all corrective measures are being taken. All SSO's are reported as soon as: (1) the City has knowledge of the discharge, (2) reporting is possible, and (3) reporting can be provided without substantially impeding cleanup or other emergency measures. For any discharges of sewage that result in a discharge to a drainage channel or a surface water, the Fire Department shall, as soon as possible but not later than two (2) hours after becoming aware of.the discharge, notify the Vernon Health & Environmental Control Department, State Office of Emergency Services (for discharges of 1,000 gallons or more of sewage), Los Angeles County Health Department (for discharges that enter L.A. River), Long Beach City Health Department (for significant spills into L.A. River that may affect City of Long Beach) and the Los Angeles Regional Water Quality Control Board. Notification to the Los Angeles Regional Water Quality Control Board should be followed -up with a fax or email, and should also specify that the State Office of Emergency Services, Los Angeles County Health Department and Long Beach Health Departmenthave already been notified. In the event that any sewage is discharged into a Los Angeles County Storm Drain, the Fire Department shall also notify Los Angeles County Public Works as soon as possible but not later than two (2) hours after becoming aware of the discharge. For any sewage discharges that are identified by.the Community services Crew as originating from the Los Angeles County Sanitation District sewage line, the Fire Department shall notify the Los Angeles County Sanitation District. 1W City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 14 of 46 The "Reporting and Notification" section of the Sanitary Seaver Overflow Response Plan identifies the Public Works and Water Superintendent as the responsible or authorized representative for the City, as described in Section J of SWRCB Order No. 2006-0003, and lists his name and contact information Accordingly, .he will oversee. the SWRCB On -Line Reporting. Initial reporting of all Category 1 SSO's originating from City -owned infrastructure (greater than 1,000 gallons, discharge to a drainage channel or surface water, and/or discharge to a storm drain which was not fully captured) must be reported to the Online SSO System as soon as possible but no later than 3 business days after the City is made aware of the SSO. A final certified report must be completed through the Online SSO System, within 15 calendar days of the conclusion of SSO response and remediation. Initial reporting of Category 2 SSO's (all other SSO's originating from City -owned infrastructure) must be reported to the Online SSO System within 30 days .after the end of the calendar month in which the SSO occurred. Minimum information that must be contained in either the 3-day,15-day, or 30-day report 1nustinclude all inforrimationidentified in Section D (ix), Monitoring and Reporting Program, of SWRCB Order No. 2006-0003. Specifically, the Sanitary Sewer Overflow Response Plan, contains the followingsections: o Purpose o Spill Response o Containment o Emergency Traffic Control o Blockage Removal o Bypass o Reporting and Notification o Posting o Restoration 'o 'Documentation City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 15 of 46 CHAPTER 3: OVERFLOW EMERGENCY RESPONSE PLAN The City's Overflow Emergency Response Plan addresses those mandatory SSMP provisions outlined in Section D, 13 (vi) Overflow Emergency Response Plan of SWRCB Order No. 2006- 0003. The City has developed ;and implemented an overflow emergency response plan that identifies measures to protect public health and the environment, thereby satisfying Section D,13 (vi) Overflow Emergency Response Plan of SWRCB Order No. 2006-0003 by including: I) Proper notification procedures so that primary responders and regulatory agencies are informed of all Sanitary Sewer Overflows (SSOs) in a timely manner; (2) A program to ensure an appropriate response to_all overflows; (3) Procedures which ensure prompt notification to appropriate regulatory agencies and other potentially affected entities (e.g. health agencies, regional water boards, water suppliers, etc.) of all SSOs that potentially affect public health or reach' the waters of the State in accordance with the Monitoring and Reporting Program (MRP). All SSOs shall be reported in accordance with this MRP, the California Water Code, other State Law, and other applicable regional water boards Waste Discharge Requirements (WDR's) or National Pollution Discharge Elimination System (NPDES) permit requirements. The SSMP should identify the officials who will receive immediate notification; (4) Procedures to ensure that appropriate staff and contractor personnel are aware of and follow the Emergency Response Plan and are appropriately trained; (5) Procedures to address emergency operations, such as traffic and crowd control and other necessary response activities; and (6) A program to ensure that all reasonable steps are taken to contain and prevent the discharge of untreated and partially treated wastewater to waters of the United States -and to minimize or correct any adverse impact on the environment resulting from the SSOs, including such accelerated or additional monitoring as may be necessary to determine the nature and impact of the discharge. The City's Overflow Emergency Response Plan also complies with the additional notification requirements outlined in SWRCB Order No. WQ 2008-0002-EXEC: (1) In the event of a sewage discharge that results in a discharge to a drainage channel or a surface water, the. City shall, as soon as possible, but not later than two (2) hours after becoming aware of the discharge, notify the State Office of Emergency Services, the local health officer or directors of environmental health with jurisdiction over affected water bodies, and the Los Angeles Regional Water Quality Control Board; and (2) As soon as possible, but no later than twenty-four (24) hours after becoming aware of a discharge to a drainage channel or a surface water, the City shall submit to the Los Angeles Regional Water Quality Control Board a certification that the State Office of Emergency City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 16 of 46 Services and the local health officer or directors of environmental health with jurisdiction over the affected water bodies have been notified of the discharge. 3.1 COMPLTANCE SUMMARY The City has outlined specific measures to protect public health and the environment in their Sanitary Sewer Overflow Response Plan (Appendix E 'of Technical Memorandum No. 2 Goals and Or ani.Zational Structure). These procedures contain a plan for responding and reporting to SSOs hich includes, but is not limited to, the following: o Descriptions, responsibilities and authorities for each management, administrative and maintenance position responsible for responding to and reporting an SSO. o Procedures for receiving SSO notification and immediately notifying first responders of the SSO. o Procedures to rapidly mobilize; contain any SSO; and diagnose, report on, and relieve its cause. o Procedures to provide emergency operations, such as traffic control, in the eventof an SSO. o Procedures for reporting all SSOs,to the On -Line SSO Reporting System. o Procedures to post the proper signs to warn the public of potential contamination hazards: o Procedures to restore the environment to the condition that existed before the SSO occurred. The City conducts internal training sessions to ensure familiarity with these procedures and prepare staff for an SSO event, from initial notification to SSO report documentation, including any necessary emergency activities, such as traffic control. Through these documents and programs, the City has developed and implemented an Overflow Emergency Response Plan that identifies measures to protect public health and the environment, thereby 'satisfying Section D, 13 (vi) Overflow Emergency.Response Plan of SVWRCB Order No. 2006-0003: (1) Section 2 and 7 of the City's Sanitary Sewer Overflow Raponse Plan outline the proper SSO response and notification procedures, thereby ensuring that primary responders and regulatory agencies are informed of all,SSOs in a timely manner; (2) Section 2 of the City's Sanitary Sewer Overflow Ae rpowe Plan contains a program to ensure an appropriate response to all overflows; City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 17 of 46 (3) Section 7 of the City's Sanitary Seaver Overflow Response Plan outlines the procedures which ensure prompt notification to appropriate regulatory agencies and other potentially affected entities of all SSOs that potentially affect public health or reach the waters of the State in accordance with the Monitoring and Reporting Program (MRP). The Public Works and Water Superintendent is the authorized representative for the City, as described in Section J of SWRCB Order No. 2006-2003. Accordingly, he will oversee the SWRCB On -Line Reporting. The Fire Department will.report the SSO to all other appropriate agencies with the appropriate contact information in Section 7. This ensures that all regulatory agencies are informed of all SSOs in a timely manner; (4) As per Section 11 of the City's Sanitary Seaver Overflow. Response Plan the City conducts internal training sessions to ensure familiarity with these procedures and prepare staff and contractor personnel for an SSO event, from initial notification to SSO report documentation, including any necessary emergency activities, such as traffic control; (5) Procedures to address emergency operations, such as traffic control and other necessary response activities, are addressed in Sections 4 and 8 of the City's Sanitary Sewer Overflow. Response Plan; and (6) Sections 2, 3 and 9 of the City's Sanitary Server Overflow Response Plan ensure that all reasonable steps are taken to contain and prevent the. discharge of untreated and partially treated wastewater to waters of the United States and to minimize or correct any adverse impact on the environment resulting from the SSOs. Provisions of the City's Overflow Emergency Response Plan, that comply with SWRCB Order No. WQ 2008-0002-EXEC, are contained in Section 7 of the City's Sanitary Sewer Overflow Response Plan: (1) In the event of a sewage discharge that results in a discharge to a drainage channel or a surface water, the Fire Department shall, as soon as possible, but not later than two (2) hours after becoming aware of the discharge, notify. the Vernon Health & Environmental' Control Department, State Office of Emergency Services, Los Angeles County Health Department (for discharges that enter L.A. River), Long Beach City Health Department (for significant spills into L.A. River that may affect City of Long Beach) and the Los Angeles Regional Water Quality Control Board; and (2) Notification to the Los Angeles Regional Water Quality.Control Board would be followed - up within 24 hours by phone, fax or email, and would also specify that the State Office of Emergency .Services, Los Angeles County Health Department and Long Beach Health Department have already been notified. 3.2 COMPLIANCE DOCUMENTS The following documents allow the City to comply with the overflow and emergency response plan requirements of the WDR, and are attached as appendices. 0 City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 18 of 46 o Sanitary Sewer Overflow Response Plan, City of Vernon, Last Updated August 2008, Appendix E. 3.3 DOCUMENT DESCRIPTION A description for each.compliance document listed above is described below: 3.3. Sanitary Server Overflew Rerponse an The City of Vernon maintains a plan for responding and reporting to SSOs in their Sanitary Sewer Overflow Reponse Plan. The purpose of these procedures is to minimize the impact of SSO's to the public and the environment. This response plan is a guideline for the standard operating procedures in the event of a SSO; and is reviewed periodically to ensure that all corrective measures are being taken. The plan includes the following contents: o Spill Response o Containment o Emergency Traffic Control o Blockage Removal o Bypass. o Reporting and Notification o Posting o Restoration o Documentation o Training Specifically; the Sanitary Sewer Overflow Response Plan addresses the following: Spill Response Includes the procedures for receiving.SSO notification and immediately notifying first responders of the SSO. Once receiving notification from the Fire Department, the City's Community Services Crew will respond to the spill site with the proper spill response and safety equipment. After normal business hours, the City's Community Services Stand-by Crew will respond. The foreman, or senior crew member, will assess the problem and assign the Crew job duties in order to eliminate the overflow if originating from a City -owned facility. If the overflow is originating from private infrastructure, the foremen or senior crew member will instruct the appropriate private wastewater r City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 19 of 46 generator to eliminate the overflow. The foremen or senior crew member will notify the Public Works. and Water Superintendent as soon as reasonably possible but not to exceed 48 hours whether the problem occurs during, or after, normal business hours. Containment Includes the procedures to contain the SSO. The Community Service Crew Will make every effort o keep the SSO in as small an area as possible, and in the streets away from storm drains. Emergency Trajic Control Includes the procedures to provide .emergency traffic control activities in the event of an SSO. The City's Community Service Crew or Fire Department will utilize assistance from the City's Police Department (Non -Emergency) in the event that the spill is located in a high traffic area. Blockage Removal Includes the procedures to efficiently remove sewer blockages. Specifically, the foreman, or senior Crew member, will assess the problem and assign the Crew job duties in order to remove the blockage from City -owned infrastructure. Bypass Includes the procedures to rapidly contain a SSO.in the event of a potential blockage that is not relieved within the first few attempts and is projected to exceed the capacity of the temporary flow containment area. In such an instance, the foreman, or senior crew member, will locate the nearest downstream manhole that can accept the additional flow, and set up an appropriately sized pump. The pump discharge hose should be secured or placed far enough into the receiving manhole thatit will not come out during pumping. The pump and pump hose should be protected from traffic by barricades. Reporting and Notification Includes the procedures for reporting SSOs and notifying the proper authorities, with appropriate contact information, as wellas the list of agencies, to be notified in the event of any SSO The Public Works and Water Superintendent, -is the authorized representative for the City, as described in Section J of SWRCB Order No. 2006-2003. Accordingly, he will oversee the SWRCB On -Line Reporting. The Fire Department will report the SSO to all other appropriate agencies with the appropriate contact information in Section 7. This ensures that all regulatory agencies are informed of all SSOs in a timely manner. Posting Includes the procedures .to post proper signs to warn the public of potential contamination hazards. Posting of contamination signs will be done in all cases whether there is standing water or the City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 20 of 46 ground is saturated. Signs will be placed in locations with high visibility so they can be seen from all routes that the public might take to enter an area. Restrictions will remain posted for a period determined by the Public Works and Water Superintendent, in consultation with the Vernon Health & Environmental Control Department. Restoration Emphasizes that every effort will be made to restore the environment to the condition that existed ,fore the SSO occurred, and outlines corresponding procedures. Documentation Includes the City's documentation requirements in the event of an SSO, including: the beginning and ending time of the SSO spill, location, and cause; whether the SSO reached surface waters or a storm drain; the total gallons of SSO spilled and recovered; any damage that was caused and any repairs that were made because of the SSO; photos of the affected area; and all notifications. Training The City has been and continues to conduct internal training and/or a field practicum no less than semi-annually in order to prepare staff for an SSO event, .from initial notification to SSO report documentation, including any necessary emergency activities such as traffic control. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 21 of 46 CHAPTER 4: DESIGN AND PERFORMANCE PROVISIONS The City's Design and Performance Provisions addresses those mandatory SSMP provisions outlined in Section D, 13 (v) Design and Performance Provisions of SWRCB Order No. 2006- 0003. The City's Design and Performance Provisions encompass the following components: !1) Design and construction standards and specifications for the installation of new sanitary sewer systems, pump stations and other appurtenances; and for the rehabilitation and repair of existing sanitary sewer systems and (2) Procedures and standards for inspecting and testing the installation of new sewers, pumps and other appurtenances and for rehabilitation and repair projects. 4.1 COMPLIANCE SUMMARY Per Section 21.3.1 of the City of Vernon Municipal Code, the Director of Community Services has charge and control of all sewers in the City. Accordingly, as part of Community Services, the Engineering Department requires that all new sanitary sewer systems, as well as the rehabilitation and repair of existing sewer facilities, be designed and constructed in accordance with the Standard Specifications for Public Works Construction (Greenbook), published by Public Works Standards, Inc.. Specifically, the City of Vernon Standard Drazvings reference the Greenbook, as does the standard contract language the City utilizes in all such construction projects. Procedures and standards for inspecting and testing the installation of new sewers and other appurtenances, and for rehabilitation and repair projects,. are maintained by the Department of Community Services and Water. Specifically, all City -owned sewer facilities are left uncovered until the City Engineer has completed inspection and testing in accordance with the Greenbook. The City maintains Design and Performance Provisions which meet the requirements of Section D. 13 (v) Design and Performance Provisions of SWRCB Order No. 2006-0003: (1) The City utilizes the Standard Specifications forPublic Works Construction (Greenbook) for design and construction standards and specifications for the installation of new sanitary sewer systems, pumps and other appurtenances, and for the rehabilitation and repair of existing sanitary sewer infrastructure. The City of Vernon Standard Drauings reference the Greenbook, as does the standard contract language the City utilizes in all relevant construction projects; and (2) The Department of Community Services and Water utilizes procedures and standards for inspecting and testing the installation of new sewers, pumps and other appurtenances and for rehabilitation and repair projects; which are in accordance with the Greenbook. All City - owned sewer facilities are left uncovered until the City Inspector completes the inspection. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 22 of 46 4.2 COMPL.L4NCE DOCUMENTS The following documents are attached as appendices in order support the City's Design and Performance Provisions, thereby allowing the City to comply with the Design and Performance Provisions requirements of the WDR: o Portions of the Municipal Code of the City of Tlernon, City of Vernon, Appendix F. o City of Vernon Standard Dranings, Department of Engineering, City of Vernon, Appendix G. o Los An County Dowyment of Public Works Standard Dranings - County of Los Angeles, Appendix H. The following document is readily available to the general public, and has therefore not been attached as appendix: o Standard Specifications forPublic Works Construction (Greenbook), Public Works Standards,.Inc., 2006. 4.3 DOCUMENT DESCRIPTIONS A description for each compliance document listed above is described below: 4.3.1 Portions ofthe Municipal Code ofthe City o Vernon (AppendixFl Adopted by the City, Section 21.3.1 of the City of Vernon Municipal Code gives the Director of Community Services charge and control of all sewers in the City. 4.3.2 City of Vernon Standard Dranings (Append_i G) These drawings reference the Greenbook, and include the City's standard drawings for: o Standard Trench Paving o Typical Trench Paving Section for Sewer Lateral o Standard Manhole "D" o Dura Plate 100 Manhole Liner 4.3.3 Los.Anp les County Department of Public Works Standard Draavin—s �phendix H) These drawings include the City's sewer system standard drawings for: 0 Grease Interceptor City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 23 of 46 o Rain Water Diversion System o Sampling Box o Sand and Grease Interceptor (Clarifier) 4.3.4 Standard S eci�cations,for Public forks Construction (Greenbook;� The Greenbook, formally known as the Standard Specifications forPublic Works Construction, is widely used by cities and counties from Santa Barbara County to San Diego County. Publication of the G. reenbook is under the oversight of Public Works Standards, Inc; a nonprofit mutual benefit corporation. It contains 'all the latest standards and recommendations that have been researched and approved by a 25-member committee, with representatives from the American Public Works Association, the Associated General Contractors of California, the Engineering Contractors Association, and the Southern California Contractors Association. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 24 of 46 CHAPTER 5. LEGAL AUTHORITY The City's Legal Authonty-addresses those mandatory SSMP provisions outlined in Section D, 13 (iii) Legal Authority of SWRCB Order No. 2006-0003. The City will demonstrate, through sanitary sewer system use ordinances, service agreements, or other legally binding procedures, that is possesses the necessary legal authority to: 1) Prevent illicit discharges into its sanitary sewer system (examples may include I/I, stormwater, chemical dumping, unauthorized debris and cut roots, etc.); (2) .Require that sewers and connections be properly designed and constructed; (3) Ensure access for maintenance, inspection, or repairs for portions of the lateral owned by the City; (4) Limit the discharge of Fats, Oils, and Grease (FOG) and other debris that may cause blockages; and (5) Enforce any violation of its sewer. ordinances. 5.1 COMPLIANCE SUMMARY The City, is regulated by several agencies of the United States Government and the State of California, pursuant to the provisions of Federal and State Law. Federal and State Laws (including, but not limited to: 1) Federal Water Pollution Control Act, commonly known as the Clean Water .Act (33 U.S.C. Section 1251 et seq); 2) California Porter Cologne Water Quality Act (California Water Code section 13000 et seq); 3) California Health & Safety Code sections 25100 to 25250; 4) Resource Conservation and Recovery Act of 1976 (42 U.S.C. Section 6901 et seq.); and 5) California Government Code, Sections 54739-54740) grant to the City the authority to regulate and/or prohibit, by the adoption of an ordinance, and by issuance of control mechanisms, the discharge of any waste, directly or indirectly, to the City sewerage facilities. Said authority includes the right to establish limits, conditions, and prohibitions; to establish flow rates or prohibit flows discharged to the .City sewerage facilities; to require the development of compliance schedules for the installation of equipment systems and materials by all users; and to take all actions necessary to enforce its authority. Due to the industrial nature of the City a large number of wastewater generators are classified as Industrial Waste Dischargers by the Sanitation Districts of Los Angeles County (Districts), and thus required to obtain an Industrial Waste Discharge Permit. The Districts are a group of special districts serving the wastewater and solid waste management needs of over five million people and 3000 industrial users in Los Angeles County. The Districts were formed under the County Sanitation District Act, passed in 1923 by the California State Legislature. This Act provides for the formation of sewerage authorities based not on political boundaries but rather on the geographic boundaries of the waste disposal problems to be solved. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 25 of 46 The Districts adopted a Wastewater Ordinance effective April 1,1972, as amended on July 1,1980, July 1, 1983, November 1, 1989, and July 1, 1998 to protect and finance the operation of the Districts' wastewater conveyance, treatment, and disposal facilities. Individual Districts also adopted Connection Fee Ordinances in 1981 (which were amended in 1984, 1990, 1992, and 1997). Companies that discharge industrial wastewater to the sewerage system are governed by both the Wastewater Ordinance and the Connection Fee Ordinance for the District in which the discharge is located. These legal mechanisms establish the Districts' Industrial Wastewater Discharge Permit, Connection Fee, and Surcharge Programs. The Industrial Wastewater Discharge Permit Program for the regulation of industrial wastewater dischargers to protect the public health, environment, and the public sewerage system. Through a series of Ordinances and Resolutions adopted by the City Council, the Sanitation. Districts of the County of Los Angeles, Portions of the Municipal Code of the City of Vernon and internally developed Plans and Requirements, the City possesses the necessary legal authority required by Section D,13 (iii) Legal Authority of SWRCB Order No. 2006-0003: (1) The City prevents illicit discharges into its sanitary sewer system (including, but not limited to, I/I, stormwater, chemical dumping, and unauthorized debris) through the Municipal Code of the City of Vernon (Section 21.4.5), the Industrial Waste Discharge Permit Requirements of the Sanitation Districts of Los Angeles County (Section 3.2.13.3), and the Wastewater Ordinance of the Sanitation Districts of Los Angeles County (Sections 305 and 406); (2) The City requires that sewers and connections be properly designed and constructed in compliance with Standard Specifications forPublic Works Construction (Greenbook), City of Vernon Standard Drawings, the Municipal Code ofthe City of Vernon (Section 21.4.4), the Industrial Waste Discharge PermitReguirements of the Sanitation Districts ofLosAngeles County (Section 3.2.A), and the Wastewater Ordinance of/be Sanitation Districts ofLosAngeles County (Sections 211 and 301); (3) All laterals in the City's service area are private. The City ensures access for maintenance, inspection, or repairs for the private laterals of Industrial Waste Dischargers through the Industrial Waste Discharge Permit Requirements of the Sanitation Districts of Los Angeles County (Section 3.2:13), and the Wastewater Ordinance of the Sanitation Districts of Los Angeles County (Sections 206 and 303). Most all City -owned wastewater infrastructure is located in public Right -of -Way, for which the City has local authority and access. For the few City -owned facilities located .on private property, access is secured through the City's unwavering enforcement of requirement for sewer easements around all publicsewer- appurtenances located in private properties. These easements are detailed by the designer on the sewer construction plans and are reviewed through the iterative plan check process. Plan checkers take special care to ensure that maintenance crews will have room for access and equipment usage for both routine maintenance and replacement or repair construction as necessary; (4) The City limits the discharge of Fats, Oils, and Grease (FOG) and other debris that may cause blockages through the Municipal Code of the City of Vernon (Section 21.4.1); and City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 26 of 46 (5) The City enforces any violation of its sewer ordinances through the Municipal Code of the City of Vernon (Article VI). 5.2 COMPLL4NCE DOCUAmNTS The following documents allow the City to comply with the Legal Authority requirements of the WDR, and are attached as appendices: o Portions of the Municipal Code of the City of Vernon, City of Vernon, Appendix F. o City of Vernon Standard Drawings, Department of Engineering, City of Vernon, Appendix G. o Los An County Appendix H. Department of Public Works Standard Drawings, County of Los Angeles, o LACSD Industrial Waste Discharge Permit Requirements, LACSD, Appendix I. o LACSD Wastewater Ordinance, LACSD, .Appendix J. The following document is readily available to the general public, and has therefore not been attached as an appendix: o Standard Specifications forPublic Works Construction (Greenbook), Public Works Standards, Inc., 2006. 5.3 DOCUMENT DEscKH-HONs Each of the following documents provides a portion of the City's Legal Authority, as required in Section D, 13 (iii) Legal Authority of SWRCB Order No. 2006-0003. 5.3.1 Portions of the Municipal Code of the City of Vernon endix F,1 Applicable sections of the Municipal Code of the City of Vernon: o 'Section 21.3.1 — Gran ts Director of Community Services, as the City Engineer, charge and control of all sewers in the city and shall construct, operate, maintain, and repair all such systems subject to the direction of the City Council. o Section 21.4.1- States it is unlawful to dump any solid matter, liquids, oils, and grease into the public sewer system which would cause obstruction or damage. o Section 21.4.4— States that the City Engineer has to approve any new connection to the public. sewer system for both industrial and non -industrial users. o Section 21.4.5 - States it is unlawful for any person to discharge industrial wastewater into the public sewer without first acquiring an Industrial Waste Discharge Permit. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 27 of 46 o Article VI — Presents the City's enforcement plan for violations of their sewer ordinances and/or City Code. 5.3.2 City of Vernon Standard Drawings (APPendix G) Used as a standard for City facilities admitting waste into the sewer system, these drawings provide a guideline for installation of new sewer system facilities. All final plans must first be approved by the City Engineer. These drawings reference the Standard Specifirations for Public Works Construction erbook), and include the City's standard drawings for: o Standard Trench Paving o Typical Trench Paving Section for Sewer Lateral o Standard Manhole "D" o Dura Plate 100 Manhole Liner 5.3.3 Los Angeles County De, partment ofPublic Works Standard Drannnes (Appendix H) Used as a standard for Los Angeles County facilities admitting industrial waste into the sewer system, these drawings provide a guideline for installation of new sewer system facilities related to the Industrial Wastewater Discharge Permit Requirements of the Sanitation Districts of Los Angeles County. These drawings include the county's sewer systemstandard drawings for: o Grease Interceptor o Rain Water Diversion System o Sampling Box o Sand and Grease Interceptor (Clarifier) 5.3.4 LACSD Industrial baste Discharge Permit Requirements (Appendix 1 Any facility admitting industrial waste into the County sewer system is required to first apply for an Industrial Waste Discharge Permit.. Facilities designated as Significant Industrial Users are required to go through a renewal/review permit process at a minimum 'of every five years. Sections of the Industrial Waste Discharge Permit. Requirements of the Sanitation Districts of Los Angeles County, relevant to the City's Legal Authority, are presented below: o Section 3:2.A - This section details what sewer facility plans are required for industrial users in order to obtain an Industrial Waste Discharge Permit: a. Sewerage Plan 1W City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 28 of 46 b. Plot Plan C. Plans of Pretreatment and Monitoring Facilities o Section 3.2.13 — This section details more plan specifications for the permit submittal process which. can include: a. Spill Containment Systems b. Flow Measurement Systems C. Rainwater Management d. Combustible Gas Monitoring 5.3.5 LACSD Wastewater Oendix,� Adopted in 1972 and most recently amended in 1998, all industrial users within the County owning a valid Industrial Waste Discharge Permit are required to comply with this Wastewater Ordinance. Applicable sections of the Wastewater Ordinance oftbe Sanitation Districts ofj OsAngeler County include: o Section 206 — Inspectors and Monitoring Personnel o- Section 211 Approval of Plans and Issuance of Permits o Section 301 Approval of Plans for Sewerage Construction o Section 303 — Inspection of Construction o Section 305 — Prohibited Rainwater, Groundwater and other Water Discharges o Section 406 Prohibited and Restricted Waste Discharges 5.3.6 Standard Specifications for Public Works Construction (Greenbook The Greenbook, formally known as the Standard Specifications for'Public Works Construction, is widely used by cities and counties from Santa Barbara County to San Diego. County. ,Publication of the Greenbook is under the oversight of Public Works Standards, Inc, a nonprofit mutual benefit corporation. It contains all the latest standards and recommendations that have been researched and approved by a 25-member committee, with representatives from the American Public Works Association, the Associated General Contractors of California, the Engineering Contractors Association, and the Southern California Contractors Association. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 29 of 46 CHAPTER 6. OPERATION AND MAINTENANCE PROGRAM , The City's Operating and Maintenance Program addresses those mandatory SSMP provisions outlined in Section D, 13 (iv) Operation and Maintenance Program of SWRCB Order No. 2006- 0003. The City's Operation and Maintenance Program encompasses the following components: (1 `. An up-to-date map of the sanitary sewer system, showing all gravity line segments and manholes, pumping facilities, pressure pipes and valves, and applicable stormwater conveyance facilities; (2) Routine preventive operation and maintenance activities by staff, including a system for scheduling regular maintenance and cleaning of the sanitary sewer system with more frequent cleaning and maintenance targeted at known problem areas. The Preventative Maintenance (PM) program includes a system to document scheduled and conducted activities, such as work orders; (3) A rehabilitation and replacement plan to identify and prioritize system deficiencies and implement short-term and long-term rehabilitation actions to address each defici The program should include renry. egular visual and TV inspections of manholes and sewer, pipes, and a system for ranking the condition of sewer pipes and scheduling rehabilitation. Rehabilitation and.replacement focuses on sewer pipes that are at risk of collapse or prone to more frequent blockages due to pipe defects. Finally., the rehabilitation and replacement plan includes a capital improvement plan that addresses proper management and protection of the infrastructure assets. The plan includes a. time schedule for implementing the short- and long-term plans plus a schedule for developing the funds needed for the capital improvement plan; (4) Training on a . regular basis for staff in sanitary sewer system operations and maintenance; and (5) Equipment and replacement part inventories, including identification of critical replacement parts. 6.1 COMPIJANCE SUMMARY The City's Operation and Maintenance (O&.Nl) Program includes routine cleaning of all City owned. gravity mains, at a minimum, every 2 years. The City does not own or operate a sewer lift station and/or pressure pipes. The City maintains an up-to-date map of the sanitary sewer system, showing_ all gravity line segments and manholes, as well as a map of all gravity main problem areas. The City maintains a database of all cleaning activity which details the time, date and location of each pipe cleaned, as well as remarks noted by the sewer crew. The City maintains this database in FileMaker Pro, and records all preventative maintenance and _work orders. The City also maintains a City of Vernon Sewer System Management Plan, Volume I Final Deport March 2010 Page 30 of 46 separate, but linked, database which documents the condition and maintenance history of each City owned manhole. The City recently completed a system -,wide -CCTV inspection of all manholes and gravity mains in 2008, and intends to conduct another CCTV video inspection of all Fats, Oils and Grease (FOG) hot spots and areas of interest, as identified in Appendix L, every five years. City engineers are in the process of reviewing video of all problem areas noted in the inspection, as well as video of all previously identified problem areas. The City anticipates developing a preliminary ranking system for these gravity mains by August 201 0,to allow the City to identify gravity mains that are at risk of collapse or prone to more frequent blockages due to pipe defects. These lines will then be prioritized and placed on the City's 5-Year Capital Replacement Plan, which is updated annually. Funding for all sewer rehabilitation and replacement projects is anticipated through the City's General Fund. The City provides on -going in house technical, job skills and safety training for its staff. The City has been and continues to conduct training of Waste Discharge Requirements (WDR) awareness. The City . has also developed an SSO Response Training, and conducts other internal training programs ;on line :cleaning, vactor truck operation, sewer grit removal and dumping, and other related tasks. The City has not encountered a situation or non-compliance event that would cause it to believe that O&M Staff is not appropriately trained. The City maintains a Pipe Yard with all necessary, .back-up parts as inventory to support their gravity mains and manholes. In summary, the City maintains a Operation and Maintenance Program which meets ` the requirements of Section D. 13 (iv) Operation and Maintenance Program of SWRCB Order No. 2006-0003: (1) The City maintains up-to-date AutoCAD and Geographic Information System (GIS) databases of their sanitary sewer system, comprised of gravitymains and manholes. The City does not own or operate a sewer lift station and/or pressure pipes. This database was utilized to create a map of the City's wastewater facilities, as shown in Figure 1 ofAppendix K. Table 1 of Appendix K identifies the hydraulic data associatedwith the City -owned wastewater facilities presented in Figure 1. Maps of City -owned Storm water facilities are also maintained by the City; (2) The City routinely cleans all City -owned gravity mains, at a minimum, of every 2 years. The City inspects known problem area gravity mains daily, and cleans these areas as -needed. A map and descriptive table of these problem area gravity mains is -presented in AppendixL. The City maintains a database of all cleaning activity which details the time, date and location of each pipe cleaned, as well as remarks noted by the sewer crew. The City maintains this database in FileMaker Pro, and records all. preventative maintenance and work orders. The City also maintains a separate, butlinked, database which documents the condition and maintenance history of each City owned manhole; (3) The City recently completed a system -wide CCTV inspection of all manholes and gravity mains in 2008, and intends to conduct another CCTV video inspection of all Fats, Oils and City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 31 of 46 Grease (FOG) hot spots and areas of interest, as identified in Appendix L, every fiveyears. City engineers are reviewing video of all problem areas noted in the inspection, as well as video of all problem areas presented in Appendix L. The City anticipates developing a preliminary ranking system for these gravity mains by August 2010, to allow the City to identify, gravity mains that are at risk of collapse or prone to more frequent blockages due to pipe defects. These lines will then be prioritized and placed on the City's 5-Year Capital Replacement Plan, which is updated annually. Funding for all sewer rehabilitation and replacement projects is anticipated through the City's General Fund; (4) The City provides on -going in house technical, job skills and safety training for fits Staff. The City has been and continues to conduct training of Waste Discharge Requirements (WDR) awareness. The City has developed an SSO Response Training. The City also conducts other internal training programs on line cleaning, vactor truck operation, sewer grit removal and dumping, and other related tasks. The City has not encountered a situation or non-compliance event that would cause it to believe that O&M Staff is not appropriately trained; and (5) The City maintains a Pipe Yard with all necessary, back-up parts as inventory to support their gravity mains and manholes. The City does not own or operated a lift station_ and/or pressurized pipe. 6.2 CoMPLFANcE DOCUMENTS The following documents, attached as appendices, support the City's Operation and Maintenance Program, thereby allowing the City to comply with. the Operation and Maintenance Program requirements of the WDR: o A Map and Table of the City's sanitary sewer system, including all gravity line segments and manholes, Appendix K. o A Map of the City's Sewer System Areas of Interest; Appendix L. 6.3 DOCUMENT DESCRIPTIONS A description for each compliance document listed above is described below: 6.3. 9 Mai and Table of Existing WastewaierFaeilities, _(At tendix K The City maintains up-to-date AutoCAD and Geographic Information System (GIS) databases of their sanitary sewer system, comprised of gravity mains and manholes. The City does not own or operate a sewer lift station and/or pressure pipes. This database was utilized to create a map of the City's wastewater facilities as shown in Figure 1 of Appendix K. Table 1 of Appendix K identifies the hydraulic .data associated with the City -owned wastewater facilities presented in Figure 1. City of Vernon Sewer System Management Plan, Volume 1 Final Report March 2010 Page 32 of 46 6.3.2 dab of Server Svstem Areas o{Interest (A , end;— I I A map and associated table detailing location and cleaning schedule for FOG hot spots and other areas of interest, and the customers associated with each FOG hot spot, as well as other areas of interest the City of Vernon. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 33 of 46 CHAPTER 7. FATS, OILS AND GREASE (FOG) CONTROL PROGRAM The City's Fats, Oils and Grease Control Program addresses those mandatory SSMP provisions outlined in Section D, 13 (vii) FOG Control Program of SWRCB Order No. 2006-0003. The City's FOG Control Program helps reduce the amount of Fats, Oils and Grease discharged to the sanitary sewer system, by including: A plan and schedule for the disposal of FOG generated within the sanitary sewer system service area, and a list of acceptable disposal facilities; (2) Legal authority to prohibit discharges to the system and identify measures to prevent SSOs and blockages caused by FOG; (3) Requirements to install grease removal devices, design standards for the removal devices, maintenance requirements, BW requirements, record keeping and reporting requirements; (4) Authority to inspect grease producing facilities, enforcement authorities, and sufficient staff to inspect and enforce the FOG ordinance; (5) Identification of sanitary sewer system sections subject to FOG blockages and establishment of a cleaning maintenance schedule for each section; (6) Development and implementation of source control measures for all sources of FOG discharged to the sanitary sewer system for each section identified; and (7). Implementation of a plan and schedule for a public education outreach program that promotes proper disposal of FOG. 7.1 COMPLL4NCE SUMMARY To reduce the amount of Fats, Oils and Grease .(FOG) discharged to City's sanitary sewer system, the City has developed a FOG control program. All major industrial users within the City's service area are identified as part of an initial occupancy inspection by the Department of Community Services. Accordingly, these customers must complete an Industrial Waste Discharge Permit application with the Sanitation Districts of Los Angeles County (LACSD). This application includes a wastewater sewerage.:plan showing sewers and associated facilities for the handling of industrial wastewater from the point of origin to the public sewer connection, and identification of all wastewater generation processes. When applicable, additional plans containing spill containment systems, grease interceptors and/or flow measurement systems are included. The City is within LACSD District No.'s 1,2 and 23. The.City requires the installation of a grease interceptor prior to providing service for all new restaurants. Sand and Grease interceptor inspections for major industrial users are conducted by LACSD staff. The City's Health and Environmental Control Department is authorized as a Certified Unified Program Agency (CUPA) by the California Environmental Protection Agency. As such, the Health 0 City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 34 of 46 and Environmental Control Department is acnrdltscon►ztlh�, maat�xialsx which may include properties with privtat4 off{ mi terwp4o . The Qty Health and Environmental Control Department logs tl -'iim�� iim = Envision database', 2ccessed through Decade Software, and has sufficient siiaiftDiipect resiraunrarvg twice year The City currently uses the Los Angeles Crunty Departmfti of' Ftibhc Wurks'" and LACSD standard drawings for both Sand and Grease 1�txeerarpwrs, axadlis iin time process of developing their own standard drawings. The City requires pmiwm awnm to 1maimnfl�,in their interceptors, and maintains a list of several independent vendors; ffi&wff, aJhftrt&spose: of accumulated FOG. In an effort to identify and maintain informatfim of ffa tad, sewer sections subject to FOG blockages, the City has developed a map and AiFt off FOB hoist spots, which includes the current frequency of cleaning for each segment. In sur,*ary, the maintains a FOG Control which meets the requirements of Section D,13 (vii) FOG Contml Mrogmm of SWRCB Order No. 2006- 0003: (1) The City maintains a plan and schedule for the disposal of FOG generated within their. sanitary sewer system service area. All major industrial users within the City's service area are identified as part of an initial occupancy inspection by the Department of Community Services. These customers must complete an Industrial Waste Discharge Permit application with LACSD. Accordingly, they are required to maintain and operate appropriate pretreatment facilities, per Section 412 of the I-4CSD Wlasteivater Ordinance. The City requires the installation of a grease interceptor prior to providing service to new restaurants. Interceptors must be maintained by their owners, and pumped out when full. Restaurants are required to have bi-annual interceptor inspections while major industrial users have inspections per the LACSD Wastewater Ordinance, specifically Section 206 The City has provided a list of independent vendors which provide collection and disposal services within their service area in their Independent CollectionlDzrposal SerUtce Vendor List, (2) The City possesses the legal authority to prohibit discharges to the system and identify measures to prevent SSO's and blockages caused. by FOG through the Code of the City. of Vernon, specifically Sections 21.3.1 and 21.4.1; (3) All major industrial users within the City's service area are identified as part .of an initial occupancy inspection by the Department of Community Services. These customers must complete an Industrial Waste Discharge Permit application with LACSD. Accordingly, they are required to install, design, maintain; monitor and report their grease removal devices in compliance with LACSD Wastewater Ordinance. The City requires all new restaurants to install Grease Interceptors; (4) All major industrialusers within the City's service area are required to complete an Industrial Waste Discharge Permit application with LACSD. Accordingly, LACSD has authority to inspect all major industrial users and restaurants as per the LACSD Wastewater Ordinance, specifically Section 206. Furthermore, the City's Health and Environmental Control Department is authorized as a Certified Unified Program Agency (CUPA) by the City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 35 of 46 California Environmental Protection Agency. As such, the Health and Environmental Control Department is authorized to conduct hazardous material inspections, which may include properties with privately owned interceptors. The City Health and Environmental Control Department logs their inspections in an Envision database, accessed through Decade Software, and has sufficient staff to inspect restaurants twice per year; (5) The City .has identified sections of their sanitary sewer system subject to high levels of FOG in their Ma andLictofSewerLineProblemAreas. Accordingly, the City has put together a'map of FOG hot spots with an associated table, conveying both location and maintenance schedule for each problem area., (6) The City has developed and implemented source control measures for all sources of FOG discharged to the sanitary sewer system for each section identified in their Map and List of Sewerlsne Problem Areas by prohibiting the discharge of FOG into their sewer system per Code of the City of Vernon, Section 21.4.1, and requiring all major industrial users and restaurants to complete an Industrial Waste Discharge Permit application with LACSD, as . per Code of the City of Vernon, Section 21.4.5; and (7) The City has developed a Public Outreach Program for public education promoting proper disposal of FOG and best management practices (BMP). The City has developed formal literature to be disseminated to all customers every three years, as well as posted on their web site, «-w.citvofvernon.org. 7.2 COMPLIANCE DocumaNrs The..followi*n documents are attached as appendices in order support the,City's FOG Control -91 Program, thereby allowing the City to comply with the Design and Performance Provisions requirements of the WDR: o Portions of the MunicipRl Code of the City of Vernon, City of Vernon, Appendix F. o City of Vernon Standard Drawings, City of Vernon, Appendix G. o Los An County Department of Public Works Standard Drawings; County of Los Angeles, Appendix H. o LACSD Wastewater Ordinance, LACSD, Appendix J. o Map and List of SewerAreas of Interest, City of Vernon, Appendix L. o Independent CollectionlDisposal Sertice Vendor Dst, City of Vernon; Appendix M. o Public Outreach Program for FOG Control, City of Vernon, Appendix N. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 36 of 46 The following documents are readily available to the general public, and have therefore not been attached as appendices: o Standard Specifications for Public Works Construction (Greenbook), Public Works Standards, Inc., 2006. 7.3 DOCUMENT DESCBIP77ON A description for each compliance document listed above is described below: 7.3. l Portions of the Municipal Code of the Citr_of Vernon (Appendix F) Applicable sections of the Municipal Code of the City of Vernon: o Section 21.3.1— Grants Director of Community Services, as the City Engineer, charge and control of all sewers in the city and shall construct, operate, maintain, and repair all such systems subject to the direction of the City Council. o Section 21.4.1— States it is unlawful to dump any solid matter, liquids, oils, and grease into the public sewer system which would cause obstruction or damage. o Section 21A.5 —States it is unlawful for any person to discharge industrial wastewater into the public sewer without first acquiring an Industrial Waste Discharge Permit. 7.3.2 City of Vernon Standard Dramji s (appendix G� Used as a standard for City facilities admittingwaste.into the sewer system, these drawings provide a guideline for installation of new sewer system facilities. All final plans must first be approved by the city engineer. These drawings reference the Standard Specifications for Public Works Construction (Greenbook), and include the City's standard drawings for: o Standard Trench Paving o Typical Trench Paving -Section for Sewer Lateral o Standard Manhole "D" o Dura Plate 100 Manhole Liner 7.3.3 LosAnQeles County Department --PP—AL', 1Yrorks Standard Draivinns endix Used as a standard for Los. Angeles County facilities admitting industrial waste into the sewer system, ,these drawings provide a guideline for installation of new sewer system facilities related to the Industrial Waste Discharge Permit Requirements of the Sanitation Districts. of Los Angeles County. These drawings include the county's sewer system standard drawings for: City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 37 of 46 o Grease Interceptor o Rain Water Diversion System o Sampling Box o Sand and Grease Interceptor (Clarifier) 7.3.4 LACSD Wastewater Ordinance ( aendix,1) Adopted in 1972 and most recently amended in 1998, all industrial users within the County owning a valid Industrial Waste Discharge Permit are required to comply with this Wastewater Ordinance. Applicable sections of the Wastewater Ordinance of the Sanitation Districts of Los An County include: o Section 206 — Inspectors and Monitoring Personnel o Section 211 —Approval of Plans and Issuance of Permits o Section 301 — Approval of Plans for Sewerage Construction o Section 303 — Inspection of Construction o Section 305 — Prohibited Rainwater, Groundwater and other Water Discharges o Section 406 — Prohibited and Restricted Waste Discharges 7.3.5 Mai and List ofSewerAreas of Interest (APpendix L) A map and associated table detailing location and cleaning schedule for FOG hot spots and the customers associated with each FOG hot spot, as well as other areas of interest the City of Vernon. 7.3.6 Independent Collectionl Di4osal Semite Vendor List (Aaendix M A partial list of independent vendors which can provide collection and. disposal services within their service area. There are several independent vendors which can provide grease interceptor cleaning services. This list represents a random selection of a portion of these vendors, and does not imply City endorsement of any specific vendor. 7.3.7 Public Outreach for FOG Control (A )endix N,) The City has developed this document to be supplied to all customers every three years, as well as posted on their website, www.citl%ofvernon.org. This mailer further defines FOG and its importance of being properly managed. It includes general prevention tips such as technology and cleaning methods. In order to accommodate each of the following FOG producers, cleaning methods and :technology target the general public, as well as restaurants and the automotive sector. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 38 of 46 7.3.8 Standard Specifications for Public r1orks Con traction (Greenboo The Greenbook, formally known as the Standard Specifications for Public forks Construction, is widely used by cities and counties from Santa Barbara County to San Diego County. Publication of the Greenbook is under the oversight of Public Works Standards, Inc, .a nonprofit mutual benefit corporation. Tt contains all the latest standards and recommendations that have been researched and approved by a 25-member committee, with representatives from the American Public Works Association, the Associated General Contractors of California, the Engineering Contractors Association,. and the Southern California Contractors Association. The City's Standard Drawings (Appendix G) reference the Greenbook, and are used as a standard for City facilities admitting waste into the sewer system and serve as a guideline for installation of new sewer system facilities. City Standard Drawings referencing the Greenbook include standard trench paving, typical trench paving section for sewer lateral, standards manhole `.`D" and Dura Plate 100 Manhole liner. 0 City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 39 of 46 CHAPTER 8. SYSTEM EVALUATION AND CAPACITY ASSURANCE PLAN The City's System Evaluation and Capacity Assurance Plan addresses those mandatory SSMP provisions outlined in Section D, 13 (viii) System Evaluation and Capacity Assurance Plan of SWRCB Order No. 2006-0003. The City is in the process of preparing and implementing a Capital Improvement Program (CIP) that will provide hydraulic capacity of key sanitary sewer system elements for dry weather peak flow c: pitons, as well as the appropriate design 'storm or wet weather event. The City's System Evaluation and Capacity Assurance Plan encompasses the following components: (1) Evaluation - Actions needed to evaluate those portions of the sanitary sewer system that are experiencing or contributing to an SSO discharge caused by hydraulic deficiency. The evaluation provides estimates of peak flows (including .flows from SSOs that escape from the system) associated with conditions similar tothose causing overflow events, estimates of the capacity of key system components, hydraulic deficiencies (including components of the system with limiting capacity) and the major sources that contribute to the peak flows associated with overflow events; (2) Design Criteria - Where design criteria do not exist or are deficient, undertake the evaluation identified in (1) above to establish appropriate design criteria; (3) Capacity Enhancement Measures - The steps needed to establish a short- and long-term CIP to address identified hydraulic deficiencies, including prioritization, alternatives analysis, and schedules. The CIP may include increases in pipe size, I/I reduction programs, increases and redundancy.in pumping capacity, and storage facilities. The CIP shall include an implementation schedule and shall identify sources of funding; and (4) Schedule — The City has developed a schedule of completion dates for all portions of the CIP developed in (1)-(3) above. This schedule shall be reviewed and updated consistent with the SSMP review and update requirements as described in Section D. 14. 8.1 CoMPLL4NCE SUMMARY The City is in the process of developing a System Evaluation and Capacity Assurance Plan which meets the requirements of Section D,13 (viii) System Evaluation and Capacity Assurance Plan of SWRCB Order No. 2006-0003: (1) The City's 2008 Sewer System Hydraulic Analysis includes wastewater flow projections and a hydraulic analysis of all City -owned gravity mains. The analysis, performed with an H2OMap Sewer hydraulic model, includes estimates of peak dry and wet weather flows. The City recently completed the 2009 Wet Weather Flow Study, which•was.utilized to calibrate the hydraulic model. The 2008 Server System Hydraulic Analysis outlines a Wastewater Capital Improvement Program to mitigate projected deficiencies in the Existing, 5-Year, 1 0-Year and 20-Year (Planning Horizon) time increment. Sanitary Sewer Overflows were not allowed to exit the system during the hydraulic analysis. As an alternative to upsizing the City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 40 of 46 capacity of a sewer line the City may opt to require a reduction in flow of an industrial waste discharger to such an extent that the existing sewer line will have sufficient capacity to meet the City's design criteria; (2) The City's 2008 Server System Hydraulic Analysis summarizes the appropriate design and replacement criteria necessary to ensure sufficient capacity, as well as preserve the estimated life -cycle of wastewater infrastructure; ') The City has established a short- and long-term Capital Improvement Program (CIP) to address projected hydraulic deficiencies. The CIP is included in the 2008 Seaver System HydraulicAnalysis, and includes projected cost estimates, alternatives analysis and project prioritization by 5-Year time increment. As an alternative to upsizing the capacity of a sewer line the City may opt to require a reduction in flow of an industrial waste discharger to such an extent that the existing sewer line will have sufficient capacity to meet the City's design criteria. The City's 2008 Sewer System Hydraulic Analysis presents a phased and prioritized Wastewater Capital Improvement Plan (CIP), with funding anticipated through the City's General Fund; and (4) The City has developed their CIP, as presented above, and plans to review and update it as necessary. 8.2 COMPLIANCE DOCUMENTS The following documents support the City's System Evaluation and Capacity. Assurance Plan, thereby allowing the City to comply with the .System Evaluation and Capacity Assurance Plan requirements of the WDR: 0 2008 Sewer System HydraulicAnaly Appendix O. sis, Infrastructure Engineering Corporation, March 2010, 8.3 DOcumE.NT DESCIiIP77ONs A description for each compliance document listed above is described below: 8.3. l 2008 Sewer vstem HvdraulicAnalvsis (f1 pen6 0� Infrastructure Engineering .Corporation completed this March 2010 review and updated analysis'of the wastewater flow projections and hydraulic analysis. The analysis, performed with an H20Map Sewer hydraulic model, includes estimates of peak dry and wet weather flows, and outlines a Wastewater Capital Improvement Program to mitigate projected deficiencies in the Existing, 5-Year,1 O=Year and 20-Year (Planning Horizon) time increment. As an alternative to upsizing the capacity of a sewer line the City may opt to require a reduction in flow of an industrial waste discharger to such an extent that the existing sewer line will have sufficient capacity to meet the City's design criteria. Specific sections in the 2008 Sewer System Hydraulic Analysis include: City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 41 of 46 o Wastewater Flows and Projections o Hydraulic Model Development o Hydraulic Model Calibration o Gravity Main Design Criteria, Replacement Criteria and Unit Costs o Hydraulic Modeling Results o Capital Improvement Program City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 42 of 46 CHAPTER 9. MONITORING, MEASUREMENT, AND PROGRAM MODIFICATIONS The City's Monitoring, Measurement, and Program Modifications addresses those mandatory SSMP provisions outlined in Section D, 13 (ix) Monitoring, Measurement, and Program Modifications of SWRCB Order No. 2006-0003. The Monitoring, Measurement, and Program Modifications encompasses the following components: (1). Maintain relevant information that can be used to establish and prioritize appropriate SSMP activities; (2) Monitor the implementation and, where appropriate, measure the effectiveness of each element of the SSMP; (3) Assess the success of the preventative maintenance program; (4) Update program elements, as appropriate, based on monitoring or performance evaluations; and (5) Identify and illustrate SSO trends, including frequency, location, and volume. 9.1 COMPLIANCE SUMMARY The City tracks the location and cause of all SSOs, blockages, and gravity main hot -spots. The City maintains a database of all cleaning activity which details the time, date and location of each pipe cleaned, as well as remarks noted by the sewer crew. The City maintains this database in FileMaker Pro, and records all preventative maintenance and work orders. The City also maintains a separate, but linked, database which documents the condition and maintenance history of each City owned manhole. The City recently completed.a system -wide CCTV inspection of all manholes anditymai gravity in 2008, and intends to conduct another CCTV video inspection of all Fats, Oils and Grease (FOG) hot spots and areas of interest, as identified in Appendix L, every five years. City engineers are reviewing video of all problem areas noted in the inspection, as well as video of all previously identified problem areas. The City is in the process of developing a preliminary ranking system for these gravity mains, to allow the City to identify gravity mains that are at risk of collapse or prone to more frequent blockages due to pipe defects. These lines are then prioritized and placed on the City's 5-Year Capital Replacement Plank which is updated annually. All major industrial users within the City's service area are identified as part of an initial occupancy inspection by the Department of Community Services. Accordingly, these customers must complete an Industrial Waste Discharge Permit application with the Sanitation Districts of Los Angeles County .(LACSD). This application includes a wastewater sewerage plan showing sewers and associated facilities for the handling of industrial wastewater from the point of origin to the public sewer connection, and identification of all wastewater generation processes. When applicable, additional plans containing spill containment systems, grease interceptors and/or flow measurement systems are included. The City requires all new restaurants to install Great City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 43 of 46 Interceptors. Sand and Grease interceptor inspections are conducted by the City of Vernon Health Department, with each inspection logged in the. City's Envision database, accessed through Decade Software. In order to monitor the implementation and measure the effectiveness of the SSMP, the City tracks several performance indicators. These indicators are recorded as outlined in Section 10 (Documentation) of their Sanitary Sewer Overflow Response Plan (Appendix E), as well as through archiving their SWRCB on-line reports. Performance indicators include: o Location of all SSOs over the past 12 months; o Number of SSOs over the past 12 months, distinguishing between dry weather overflows and wet weather overflows; o Volume distribution of SSOs (e.g. number of SSOs < 100 gallons,100 to 999 gallons, 1,000 to 9,999 gallons, > 10,000 gallons); o Volume of SSOs that was contained in relation to total volume of SSOs; o SSOs by cause (e.g. roots; grease, debris, pipe failure, pump station failure, capacity, other); o Number of Interceptors inspected over the past 12 months; o Percentage of Interceptors inspected over the past 12 months; o Miles of gravitymains cleaned over the past 12 months; o Percentage of total gravity mains cleaned over the past 12 months; In order to keep the SSMP up to date, the City has assigned a staff member to review the SSMP annually. In addition to tracking the above performance indicators, the staff member will review all sections of the SSMP for effectiveness and timeliness. Collection system personnel will also be consulted annually to. review the effectiveness of the SSMP, and help identify potential .areas for. improvement. In summary, the City maintains a Monitoring, Measurement, and Program Modifications which meets the requirements of Section D,13 (ix) Monitoring, Measurement, and Program Modifications of SWRCB Order No. 2006-0003: (1) The City tracks the location and cause of all $SOs, blockages, and gravity main hot -spots. The City maintains a database of all cleaning activity which details the time, date and location of each pipe cleaned, as well as remarks notedby the sewer crew. The City maintains this database in FileMaker Pro, and records all preventative maintenance and work orders. The City also maintains a separate, but linked, database which documents the 0 City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 44 of 46 condition and maintenance history of each City owned manhole. The City recently completed a system -wide CCTV inspection of all manholes and gravity mains in 2008, and intends to conduct another CCTV video inspection of all Fats, Oils and Grease (FOG) hot spots and areas of interest, as identified in Appendix L, every five years. Interceptor inspections are conductedby the City of Vernon Health Department, with each inspection logged in the City's Envision database, accessed through Decade Software; (2) The City monitors the implementation of the SSMP, and measures the effectiveness of each element by SSMP by developing and tracking performance indicators on an annual basis; (3) By tracking performance indicators, the City is able to assess the success of their preventative maintenance program; (4) The City has assigned a staff member to review the SSMP annually, in order to update all program elements as appropriate. In addition to tracking the above performance indicators, the staff member will review all sections of the SSMP for effectiveness and timeliness. Collection system personnel will also be consulted annually to review the effectiveness of the SSMP, and help identify potential areas for improvement; and (5) The City tracks the location and volume of all SSOs, as outlined in Section 10 (Documentation) of the Sanitary Sewer Overflow Response Plan (Appendix E), as wellas the through the archiving of their SWRCB on-line reports. The City calculates the frequency of their SSO's from these records. 9.2 COMPLIANCE DOCUMENTS The following document allows the City to comply with the Monitoring, Measurement, and Program Modifications:requirements of the WDR, and are attached as appendices. o Map and list of SesverAreas ofinterest, City of Vernon, Appendix L. 9.3 DOCUMENT DESCRIPTIONS A description for each compliance document listed above is described below: 9.3.1 Map and Last oMwe_ r_Areas o{interest (Appendix L1 A map and associated table detailing location and cleaning schedule for FOG hot spots and the customers associated with each FOG hot spot; as well as other areas of interest the City of Vernon. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 45 of 46 CHAPTER 10. SSMP PROGRAM AUDITS The City's SSMP Program Audits addresses the mandatory SSMP provision outlined in Section D, 13 (x) SSMP Program Audits of SWRCB Order No. 20.06-0003. The City is required to conduct periodic internal audits, appropriate to the size of the system and the number of SSOs. At a minimum, these audits must occur every two years and a report must:be prepared and kept on file..This audit shall focus on evaluating the effectiveness of the SSMP and The City's compliance with the SSMP requirements identified in Section D,13 of SWRCB Order No. 2006-0003, including the identification of any deficiencies in the SSMP and steps to correct them. 10.1 COMPLIANCE SUMMARY The City will conduct an internal audit of their SSMP every two years, and focus on the effectiveness of the SSMP and the City's compliance with the SSMP requirements of Order No. 2006-0003. The audit will include, but may not be limited to, the following: o Any significant changes to components of the SSMP, including but not limited to, Legal Authority, FOG Control Program or Overflow Emergency Response Plan. o Any significant changes to the referenced compliance documents, presented as Volume II of the Sewer System Management Plan. o SSMP implementation efforts over the past two years; o A description of additions and improvements made the sanitary sewer collections system during the past two years; o A description of the additions and improvements planned for the upcoming two years, with and estimated schedule for implementation. o Strategies to correct deficiencies, if identified, will be developed by the responsible City division. 10.2 COMPLIANCE DOCUMENTS There are no compliance documents for this -section. 10.3 DOCUMENT DESCRIPTIONS There are no document descriptions for this section. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 46 of 46 CHAPTER 11. COMMUNICATION PROGRAM The City's Communication Program addresses the mandatory SSMP provision outlined in Section D, 13 (xi) Communication Program of SWRCB Order No. 2006-0003. The City should communicate on a regular basis with the public on the development, implementation, and performance of its SSMP. The communication system shall provide the public the opportunity to provide input to the City as the program is developed and implemented. The City shall also create a plan of communication with systems that are tributary and/or satellite The City's sanitary sewer system. 11. 1 COMPLIANCE SUMMARY The City will communicate on a regular basis with interested parties on the implementation and performance of this SSMP. The communication program allows interested parties to provide input as the program is developed and implemented. The City willmake a Draft version of the SSMP available to the public, allow time for review, and invite public comments at a City Council meeting, thereby allowing for public input. The City anticipates discussions regarding the development and implementation of their SSMP with Los Angeles County in the next 3 years, as all wastewater generated in the City is conveyed to facilities owned by Los Angeles County. All wastewater conveyed in City -owned facilities is generated within the City's service area, as no other agency is tributary to City -owned facilities. Additionally, the City's website (YmmLcitvofverno_p or ) presents information about on -going efforts in regards to both the SSMP, and FOG control programs. The City anticipates agendizing the SSMP annually to allow for discussion At City Council Meeting, thereby providing the opportunity to comment on the implementation and performance of the SSMP. 11.2 COMPLIANCE DOCUMENTS There are no compliance documents for this section. 11.3 DOCUMENT DESCRIPTIONS There are no compliance documents for this section Infrastructure Engineering Corpr)ration CITY OF VERNON SEWER SYSTEM MANAGEMENT PLAN VOLUME II - APPENDIX "O„ SYSTEM EVALAUTIONAND CAPACITY ASSURANCE PLAN Date: March 19, 2010 —FINAL October 16, 2009 —FINAL DRAFT September 4, 2009 —2na DRAFT September 19, 2008 —1st DRAFT Subject: 2008-09 SEWER SYSTEM HYDRAULIC ANALYSIS Prepared By: Genevieve Chambliss, E.I.T.; Jeff Kirshberg Ph.D., P.E. (C67882) Reviewed By: Scott Humphrey, P.E. (C64206) EXECUTIVE SUMMARY In support of the Sewer System Management Plan (SSMP) Infrastructure Engineering Corporation (IEC) has performed a hydraulic analysis of the wastewater collection system in the City of Vernon (City). IEC developed wastewater flow projections for the Existing, 5-Year, 10-Year and the 20- Year (Planning Horizon) time. increments: As summarized in Table 3, the City's Existing average dry weather flow of 5,546 gpm is anticipated to increase by 0.7% per annum, reaching 6,381 gpm in the 20-Year time -increment In order to estimate the 5-Year, 10-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per anum increase was assumed, consistent with .the City's .2005 Urban Dater Management Plan. The City will revise their Urban Water Management Plan in.2010, and re-evaluate the projected growth of water demands as part of the plan's development. As projected demands are anticipated to reflect Governor Schwarzenegger's pending 20x2020 legislation, the City's water demands, and respective wastewater projections, may decrease as much as 20% in order to achieve statewide compliance goals. IEC utilized MWH Soft, Inc.'s H2OMap Sewer software to create a wastewater collection system model for the City. The model was used to evaluate existing City owned wastewater facilities and provide recommendations for upsizing. The City recently completed the 2009 Wet Weather Flow Study, which included wastewater flow data obtained for (10) sites. Table :4 presents the comparison between the results generated with the H20Map steady state scenarios and the City's flow meter data, illustrating a successful calibration effort. Under Existing flow conditions, 29 gravity main segments (measured manhole to manhole) satisfy the City's replacement criteria, for a total of 6,997 linear feet. An additional 5 gravity mains segments satisfy the City's replacement criteria in the 10-Year time increment, with a combined additional length of 610 ft. All 34 gravity main segments have been recommended for upsizing in compliance with the City's design criteria in the 20-Year (Planning Horizon) time -increment. 5242 Katella Ave, Suite 205, Los Alamitos, California 90720 T 562.344.9060 F 562.344.9055 www.iecorporation.com City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 2 of 36 These gravity main segments, illustrated in Figures 4 through 12, have been included in the City's proposed Wastewater Capital Improvement Plan (CIP), with estimated probable costs of $2.3 Million for Fiscal Years 2009-2013, and $0.2 Million for Fiscal Years 2019-2023, totaling $2.5 Million. Estimated probable costs provided represent Order of Magnitude level costs as established by the American Association of Cost Engineers (RACE) and represent an accuracy of +50% to - 30%. WASTEWATER FLOW PROJECTIONS As summarized in Table 3, the City's Existing average dry weather flow of 5,546 gpm is anticipated to increase by 0.7% per annum, reaching 6,381 gpm in the 20-Year time -increment. In order to estimate the 5-Year, 10-Year and 20-Year, (Planning Horizon) average daily wastewater flows, a 0.7% per anum increase was assumed, consistent with the City's 2005 Urban WlaterManagement Plan. The City will revise their Urban Water Management Plan in 2010, and re-evaluate the projected growth of water demands as part of the plan's development. As projected demands are anticipated to reflect Governor Schwarzenegger's pending 20x2O2O legislation,_ the City's water demands, and respective wastewater projections, may decrease as much as 20% in order to achieve statewide compliance goals. Average Dry Weather Wastewater Flow (ADWF) Average dry weather wastewater flow (ADWF), or base flow, is domestic (or sanitary) wastewater flow from residential; commercial, and institutional (schools; churches, hospitals, etc) sources, plus industrial wastewater. The wastewater flow is affected by population and land uses' in an area. Wastewater flow varies throughout the day in response to personal habits and business operation: To calculate the City's ADWF, each parcel's 2007 average daily water demand multiplied by an estimated return -to -sewer ratio. The City's 2007 water billing records were analyzed, and a list of the Major Water Users, with average daily water demands greater than 10,000 gpd, was compiled. As presented in Table 1, there are 91 Major Users accounting for 7.9 mgd, or 89%, of Vernon's total water demand. Water bills were assigned to individual parcels, as illustrated in Figure 1. For those parcels serviced by the California Water Company, in sewer basins 14,15,17,18, 20,21 and 22, water billing records were not available. Each parcel's average daily water demand was then multiplied by a corresponding return -to -sewer (RTS) ratio, based on land use. Initially, for industrial.and residential parcels, RTS ratios of 0.95 and 0.65 were utilized respectively, with the exception of the Seven-up Bottling Company. For this parcel a RTS ratio of 0.2 was used, to account for the quantities of water. consumed in their beverage preparation. For those parcels serviced by the California Water Company, available wastewater flow meter data was utilized .to estimate an ADWF industrial duty factor of395 gpd/acre. Additionally, when available,: average dry weather flows were obtained from wastewater discharge permits. 0 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 3 of 36 For the. basins monitored in the City's recent 2009 Wet Weather Flow Study, estimated average daily flows were compared to those recorded in the study, as presented in Table 4 in a subsequent section. In addition' to confYnigthe 395 pd/ngcre estimate for California Water Company customers, RTS were specifically altered for the following basins as monitor data revealed lower base flows than previously anticipated: • Basin 5 adjusted to reflect a Return -to -Sewer Ration of 0.75 • Basin 6 adjusted to reflect a Return -to -Sewer Ration of 0.60 • Basin 9 adjusted to reflect a Return -to -Sewer Ration of 0.75 • Basin 13 adjusted to reflect a Return -to -Sewer Ration of 0.50 • Basin 14 adjusted to reflect a Return -to -Sewer Ration of 0.197 Flows measured for Basins 1 and 4 still conformed to a 0.95 RTS, and as such, flows projected for parcels not measured in the 2009 Wet Weather Flow Study are still assumed to generate wastewater with a RTS of 0.95: Average Dry Weather Wastewater Flow Prjecfions Due to the industrial and built -out nature of the City, future wastewater flows will most likely be from new industrial users, which, will be evaluated on a case by case basis. However, in order to estimate the 5-Year, 10-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per anum increase was assumed, consistent with the City's 2005 Urban WlaterManagementPhn. Table 3 presents the City's projected ADWF for each time increment. 0 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 4 of 36 f Fl 7 C71 d411�1� i`� FTL•Ti'1'F•5 i�'i��f ii i iT�y1 i�l•51�L7TiT•T, M.�u,wcs-_.:"� " E.r.:.,.�MR�Ka--"a 5 6302-003-023 2501 E 28TH ST 400,547 1476 400,547 6 6303-002-025 3220 E 26TH ST 363,981 2071 300,391 2070 61,012 2031 2,019 3101 320 1979 240 7 6310-009-019 5215 BOYLE AVE 341,666 3485 328,405 428 7,554 557 5,707 8 6308-018-019 5801 E 2ND ST 270,079 3493 270,079 9 6310-008-007 5383 ALCOA AVE 226,126 3464 226,126 10 6308-007-019 . 4460 PACIFIC BLVD 202,198 1170 202,198 11 6302-020-041 2727 VERNON AVE 199,296 3537 198,728 1975. 568 12 '6310-027-022 6270 BOYLE AVE 138,259 3366 90,647 3366 47,612 13 6303-029-900 2828-2970 E 50TH ST 135,839 3597 108,937 6303-029-901 268 26,901 14 6303-019-015 4633 DOWNEY RD 134,488 1682 133,669 1613 820 15 6303-009-007 3501 VERNON AVE 131,027 3420 131,027 16 6302-020-059 3883 SOTO ST 128,756 3406 . 127,717 3368 1,039 17 6303-001-012 2923 FRUITLAND AVE 127;816 262 127,816 18 6303-012-041 3055 E 44TH ST 114,335 3536 114,335 19 6303-002-021 3270 E 26TH ST 102,626 3525 47,604 3526 47,489 1950 ' 4,455 _ 401 2228. 1949 $50': 20 6304-021-049 4215 EXCHANGE AVE 90,602 2271 83;171 2270 7,431 21 6303-007-026 3399 VERNON AVE. 88,965 3402 88,965 22 6308-005-009 - 4553 SEVILLE AVE 84,446 1098 47,356 3242 37,091 23 6304-027-015 4224 DISTRICT BLVD 83,803 2213 83,198 2567 559 2551 45 24 6302-001-038 2750 JEWEL AVE 80,124 1865 80,120 1892 4 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 5 of 36 Tahln �. _ 7flfl7.:#e.a. rnon 25 26 27 6302-001-044' '6308-016-049 6302-007-023 2731 SOTO ST ' 68,441 2300-E 52ND ST 1 59,543 2807 SANTA FE AVE 56,168 1758 68,441 3326 59,543 3371: 56,168 28 r 6308-005-015 2638 VERNON AVE 53,436 _ 1071 -. 3593 . 32,807 20,628 51,471 29 30 31 32 6310-027-028 6303-010-041 6310-008-005 6308-01.3444 5950 ALCOA AVE 4317 DOWNEY RD 5151 ALCOA AVE 4510 ALAMEDA ST 53,020 " 50,794 50,600 50,212 3221 3173 3174 375 3467 3280 1,480 M70 50,794 50,600 50,212 33 34 35 36 37 6302=020-057 63102-013-029 0-002-015336121 6303-024-007$3225 6308-017-0305525. 2750 E 37TH ST 2959 E 50T H ST: FRUITLAH ST ND AVE SANTA FE AVE 49,038 45,700 44,597 43,366 43,179 1508 3425 3425 1150 3205 3315 3574 39,591 9,005 443 45,700 44;597 43,366- 43,179 38 5169-021-003 WASHINGTON BLVD 41,800 3144 38,904 675 2,896 39 6310-002-029 5353-5401 DOWNEY RD 40,712 1964 40 712 40 41 42 43 44 6303-024-011: 6302-003-019' 6302=014-013 5169-029-020 . 6303-028-014 2905 E 50TH ST 2601 E 26TH ST 2323 E.38TH ST 2775 E 26TH ST 5100 BOYLE AVE . 40,056 39,093 37,853 . 34,338 . 33,322 2053 40,056 1535 3038 640 39,093 37,853 9,338 641 33,322 45 6308-010-017 5075 PACIFIC BLVD 32,978 1343 543 29,104 3,873. 46 47 48 49 6304-020=021 6302-012 -013 - 6304-01.004 6310-027-036 4525 DISTRICT BLVD 29 10 ROSS. ST 4879 FRUITLAND AVE 6180 ALCOA AVE -32,141 31,248 30,344 29,500 2607 2604 28,963 3,178 1866 31,248 2677 30,344 3150, 29,500 50 51 6303-008-008, 6303-016- 004 3308 BANDINI BLVD 3250 E 44TH ST 29,088 - 28,346 3134 16,233 1549 12,855 3110 28,346 52 63087015-077 2100 E 49TH ST 28,330 2028 3616 961 22,213 6,117 28,330 53 6310-002-018 3308 FRUITLAND AVE 28,330 1 7 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 6 of 36 i.auie i - zuu i major water users in the city of vernon 54 6303-011-047 3420 VERNON.AVE _ 26,883 1671 15280 3391 11,603 55 6310-027-039 5970/5980 ALCOA AVE 25,914 3175 .251914 56 6303-013-045 2851 E 44TH ST 25,563 1039; 25,563 57 6303-005-032 31.63 VERNON AVE 23,815 3554 23,815 58 6302-009-038 2622 ALAMEDA ST 23784 3459 23,784 59 5169-034-019 3305 E 26TH ST 22,567 2041 22,567 60 6304-021-052 4383 EXCHANGE AVE 22,446 2276 22,446 61 6303-009-015 3615 VERNON AVE 22,292 1653 22,292 62 6304-027-005 , 4955 MAYWOOD AVE 21.,919 2317 21,919 63 6302-017-901 4305 SANTA FE AVE 21 3461 16,440 1705 3,420,799 2064 1,920 1581 18 64 6308-017-015 2001 E 57TH ST 21,325 1757 21,321 1585 4 65 6303-027-002 3301 FRUITLAND AVE 21,012 962 21,012 66 6303-013-042 2809 E 44TH ST 20,639 1189 . 20,639 67 6303-007-030 3425 VERNON AVE 19,803 3511 19,598 2047 205 68 6302-012-01 2037E 38TH ST 19,077 2123 15,808,9 2123 3,269 69 6308-014-025 1955E 48TH ST 18,866 _ 3447 18,6711783 195 70 5169-034-010 3365 E 26TH ST 18,575 1699 18,575 71 6308-016-038 5200 ALAMEDA ST 18,241 3167 16,9273166 1,314 72 6303-011-049. 3141 E 44TH ST 16,979 3412 16,979 73 6308-012-022 2300 VERNON AVE 16;208 630 13,337 1825 2,871. 74 '6303-026-012 3341 E 50TH ST 16,083 3545 16,083 75 6303-020-010" 4700 BOYLE AVE . 15,899. 722 15,899 76 6308-016-025 2340 E 52ND ST 15,698 11873 15,698 77 6302-009-028 2026 E 27TH ST 15,390 1454 15,390 78 6303-004-035 2822 SOTO ST 15,235 " 292 15,235 79 6308-018-022 5700"1ST ST 15,190 3608 15,190 80 6308-017-042 2100 E.55TH ST 15,165 3521 15,165 81 6310-027-044 6033/6063 MALBURG WY15,108 3268 15,108 82 6310-004-008 3365 SLAUSON AVE 14,118 3163 14,118 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 7 of 36 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 10 of 36 I ame S - YVastewazer mow vrojections oy Basin 1 ° : 138 "143 149 159 -`19 20 21 22 3 195 202 209 2.24 4 1,289 1,337 - 1,384 .1,484 5 495 513 531, 569 6 199 206 213 229 7 4 5 5 .5 8 9 9 9 10 9- 578 599 621 665 10 1,246 1,289 1,335 1,433 11 275 284 294 316 12 91 94 97 105 13 215 223 231 247 14. 198 206 213 228 15 34 36 37 39 16 276 286 297 318 17 8 9 g 10 18 27 28 29 31 19 22 23 24 25 20 ` 62 64 66 71 21 1 1 1 1 22 8 8 g g 23 50 51 .53 58 24 75 77 80 86 25 30 32 33 35 Total 5,546 5,744 5,948 6,381 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 11 of 36 Average Dry. Weather Wastewater Flow during the Work meek (ADWFW!W) 1Z Flow data collected and discussed in the W09 Wet Weather Flow Study shows a significant increase in wastewater flow during the traditional work week, Monday through Friday. To account for this two -tiered flow pattern, ADWF was multiplied by a work week peak factor of 1.17. The result was the ADWF Work Week (ADWFWW) scenario. Peak Dry Weather Wastewater Flow (PDWF) Wastewater flow varies throughout the day in response to personal habits and business operation. Peak Dry Weather Flow (PDWF) accounts for peak usage patterns, and includes estimates of Groundwater Infiltration (GWI). GWI is defined as groundwater entering the collection system through pipe joints and manhole walls due to an aging system or improper construction. The magnitude of GWI .depends on the depth of the groundwater table above the pipelines the percentage of the system submerged, and the physical condition of the system. Variation in groundwater levels in the City is seasonal in nature. The GWI tends to be low during the summer and fall months (dry weather) and increases gradually as the wet weather season progresses. While GWI is -affected by rainfall, it responds gradually and is not directly related to any one individual rainfall event. It is assumed that the ADWF and GWI are taken into account in the peak dry weather flow equation. Therefore, no further contingency for these components are necessary. To estimate PDWF, a Peak Dry Weather Factor curve (in cfs) was developed specifically for the City, utilizing the data collected in the 2009 Wet Weather Flow Study. The 2009 Wet Weather Flow Study produced sufficient data to derive a peak dry weather curve, and included measured flows for nine (9) sites within the City's sewer service area. Two separate rain events occurred during this study. Any data obtained during these rain events (or within 48 hours of a rain event) was classified as wet weather. data. All other data was classified as dry weather data and was analyzed to calculate Average Dry Weather Flow Rates for each flow meter. A Peak Dry Weather Curve was derived by graphing the peaking factor derived ;from the measured Peak Dry Weather Flow Rates versus the Average Dry Weather Flow Rates for each of the flow monitoring sites. An .equation for the Peak Dry Weather Factor (PWWF) was then generated using a "best -fit," exponential curve. This curve is illustrated as the "black" curve in Figure 2, and corresponds to the following recommended Peak Wet Weather Factor, based on ADWFWW in cfs: Peak Dry Weather Factor =1.30 x (Average Dry Weather Flow during the Work Week)" When available, industrial discharge permits were used to estimate peak dry weather flows. For these parcels, estimates of PDWF were obtained directly from available permits, and not from the City's Peak Dry Weather Factor curve and ADWFVWU. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 12 of 36 For purposes of comparison, the Los Angeles Department of Water and Power's (LADWP) Peak Dry Weather Curve, as published in the LADWP Bureau of Engineering Manual —Part F; is also presented. It is worth noting that due to the City's Industrial nature, and predictable usage patterns, measured peaks are substantially lower than.those previously calculated utilizing the LADWP Peak Dry Weather Curve. Figure 2 PervSS 4.0 , 05 Q:0 //�� q L Vj q t C rr 45 2 AV.erage Dry Wea#l��eriFloW �litsrk lt4 -O-k {cis) Peak Wet Weather 1Wasteavater Flow (PWWF) Peak Wet Weather Wastewater Flow (PPWF) is estimated as Peak Dry Weather Flow (PDWF) plus Rainfall Dependent Infiltration/Inflow (RDI/I). RDI/I is storm water that enters the wastewater collection system in direct response to the intensity and duration of individual rainfall events. RDI/I may recede gradually after a storm; however, any residual flow is considered to be a general increase in GWI. To estimate PWWF, a Peak Wet Weather Factor curve (in cfs) was developed specifically for the City, utilizing the data collected in the 2009 Wet Weather Flow Study, The 2009 Wet Weather Flow Study produced sufficient data to derive a peak wet weather curve for the one year storm, and included measured flows for nine (9) sites within the City's sewer service area. Two separate rain I-W City of Vemon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 13 of 36 events occurred during this study. Any data obtained during these rain events (or within 48 hours of a rain event) was. classified as wet weather data. This data was analyzed to calculate Peak Wet Weather Flow Rates for each flow meter. A Peak Wet Weather Curve was derived by graphing the peaking factor derived from the measured Peak Wet Weather Flow Rates versus the Average Dry Weather Flow Rates for each of the flow monitoring sites. An equation for the Peak Wet.Weather Factor (PWWF) was then generated using a "best -fit," exponential curve. This curve is illustrated as the "green" curve in Figure 2, and corresponds to the following recommended Peak Wet. Weather Factor, based on ADWFWW in cfs: Peak Wet Weather Factor = 2.32 x (Average Dry Weather. Flow during the Work Week)-0.079 It is worth noting that due to the City's Industrial and built -out nature, predictable usage patterns and complete storm drain coverage throughout the City's service area, measured wet weather peaks' are lower than those dry weather peaks previously calculated utilizing the I.ADWP Peak Dry. Weather Curve. HYDRAULIC MODEL DEVELOPMENT IEC utilized MWH Soft, Inc.'s H2OMap Sewer GIS 8.0, Sp 1, Update #3 software to create a wastewater collection system model for the City. The model was used to evaluate existing City owned wastewater facilities and provide recommendations .for upsizing. The main components involved in developing the City's sewer hydraulic model are as follows: • Assignment of attribute data to emulate the City's physical facilities. • Scenario development for each relevant planning period. • Loading of existing and _projected wastewater flows. The City's most current AutoCAD/GIS database was utilized as the basis for the model infrastructure. All City owned wastewater facilities, excluding laterals, were then input into the hydraulic model from the AutoCAD/GIS database. Invert elevations, length, location and diameters for the approximately 1,000 gravity mains were input into the H2OMap hydraulic model. For each time -increment, four (4) steady state scenarios were created in the hydraulic model to emulate the following: average dry weather flow (ADWF); ADWF during the work week (ADWFWW ); peak dry weather flow (PDWF); and peak wet weather flow (PWWF). Consistent with the 2005 Urban W/aterManagement Plan, an annual growth rate of 0.7% was utilized in projecting average daily demand in each time increment. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 14 of 36 HYDRAULIC MODEL CALIBRATION When calibrating a hydraulic model, the best available metered data is utilized to either confirm or correct the results predicted by the model. The City recently completed the 2009 Wet Weather Flow Study, which included measured flows for nine (9) sites within the City's sewer service area. IEC used the measured ADWF, ADWFWW, PDWF and PWWF flows to calibrate the hydraulic model. Table 4 presents the comparison between the results generated with the H2OMap steady state scenarios and the City's flow meter data. Based on the results presented in Table 4, the H20Map Sewer Model is adequately calibrated, with 100% of the average flow rates predicted within 10% of average flows measured. A majority of peak flows are also with 10%, with all but one of the remaining locations conservatively predicting higher flows in the model than measured. 14 ON 6- Gz H w � �U 4 w City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 17 of 36 GRAVITY MAIN REPLACEMENT CRITERIA The National Clay Pipe Institute (NCPI) recommends that smaller pipelines (8" and smaller) be designed to .flow atlevels not exceeding half -full (d/D=0.50) during peak conditions. For larger pipelines, the tributary area is larger. Local deviation from design wastewater flows tend to balance one another for larger areas, resulting in a closer correlation of actual anddesign wastewater flows. Consequently, the NCPI recommends that these larger wastewater pipelines should be designed for d/D not to exceed 0.75. In analyzing the City's existing wastewater pipelines, it is unnecessary to allow for an excessive factor of safety.This is because the City's wastewater basins are largely built out, and future development patterns are relatively certain. As new major industrial users apply for wastewater service, they will be evaluated on a case -by -case basis, including estimated flow rates and.impacts to City -owned wastewater facilities. Therefore, City -owned wastewater pipelines may be flowing at levels above a d/D of 0.50 and still be operating satisfactorily. Remaining pipeline capacity, above d/D = 0.75 has been reserved to handle emergency flows such as I&I beyond that planned for in a design storm, and to provide for ventilation_ within the :pipe. This should not be considered a component of the pipeline capacity. In an effort to account for the City's industrial and built -out nature, and ensure that gravity main segments are replaced due to capacity and flow constraints, the following describes the City's replacement criteria: • Minimum velocity: Z feet per second • Maximum velocity: 10 feet -per second • Maximum Peak Wet Weather Flow depth -to -Diameter d/D = 0.75 • Maximum Peak Dry Weather Flow .depth -to Diameter • d/D = 0.55 for pipes less than 12-inches in Diameter. • All pipes requiring replacement shall be designed in accordance with the City's design criteria. In the .event that a gravity main does not .qualify for replacement, but the pipelineimmediately upstream. requires upsizing, one additional replacement stipulation maybe applicable. The purpose of this replacement stipulation is to insure that pipe -reaches increase in diameter as they progress downstream, and prevent, wherever possible, pipe -reaches from fluctuating up and down in diameter. If a gravity _main requires upsizing to a diameter larger than the diameter of the gravity main(s) immediately downstream in the same pipe -reach, and the downstream pipe(s) are less than 750 ft in length before conveying flow to a gravity main of equal or larger diameter than the diameter recommended for the deficient upstream gravity main, then the downstream gravity main(s) of less than 750 ft shall be upsized to the same diameter of the upstream pipe. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 18 of 36 GRAVITY MAIN DESIGN CRITERIA In analyzing a wastewater system, it is necessary to derive standards. regarding the amount of flow that may be efficiently conveyed. A set of standards for the City's gravity mains was developed, based on the City's standard criteria, typical industry standards and conversations with City Staff. All gravity main segments which satisfy the City's replacement criteria, shall be upsized in accordance with this design criteria. In an effort to provide reliable gravity sewer service while minimizing excessive wear through the City's gravity mains, sanitary sewers shall be designed to the following design criteria: • Pipes less than 12-inches in diameter: • Pipes 12-inches or greater in diameter: • Minimum velocity: • Maximum velocity: • Manning's n: • Minimum pipe replacement diameter GRAVITY MAIN UNIT COSTS 1/2 full at peak flow '/a full at peak flow 2 feet per second 10 feet per second 0.013 8-inches Unit costs used to develop capital cost estimates for proposed facilities were developed using the Engineering News Record Construction Cost Index (ENR-CCI) 20-city national average, and recently completed projects by IEC of a similar nature. These estimates are based on the best available data at the time of this report; however, since prices of materials and labor fluctuate with time, new estimates should be obtained during pre -design for proposed facilities to confirm budget amounts. Recent market trends have indicated substantial volatility in the price of construction materials such as steel and concrete. These factors, coupled with the high level of similar work currently being performed, have on occasion resulted in a generally unpredictable bidding environment. The ENR-CCI is an inflation index used to adjust prices from one time period to another. The cost estimates presented in this report are based upon an ENR-CCI cost index of 8,596 for October 2009. Costs estimated herein for recommended facilities should be adjusted in the future either by making new estimates or by comparing the future ENR-CCI index to 8,596. A factor of 20 percent of total construction cost has. been used for engineering and administration, which includes, but is not limited to the following: • Planning and design reports • Design • CEQA compliance • Permits City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 19 of 36 • Surveying • Service during construction (submittals, as-builts) • Inspection A factor of 30 percent has been added for contingencies. These engineering, administration and contingency factors have been incorporated into all unit costs. Estimates of probable.capital costs provided represent Order of Magnitude level costs as established by the American Association of Cost Engineers (AACE) and.represent an accuracy. of +50%to -30%. Table 5 presents the gravity:main unit costs used in developing capital costs. Table 5 - Gravity Main Unit Costs n 10 $250 12 $275 14 $310 15 $315 16 $335 _ 18 :' $360 21 $420 24 $455 rvoie: units costs include Engineering, Legal, Administration, and Contingencies City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 20 of 36 HYDRAULIC MODELING RESULTS Under existing flow conditions, 29 gravity main segments (measured manhole to manhole) satisfy the replacement criteria in peak conditions. Of these, 22 gravity main segments satisfy the replacement criteria in peak dry conditions due to capacity. The remaining 7 gravity mains segments have been identified to ensure that pipe -reaches increase in diameter as they progress downstream, and prevent, wherever possible, pipe -reaches from fluctuating up and down in diameter. Table 6 presents a summary of the 29 gravity main segments recommended for upsizing in the Existing time increment, for a total of 6,997 linear feet. Table 6 - Summary of Existing Pipeline Recommendations 'i �t� a �' Nat ! y }i3. Y Y•S4 HlfgSt,`+,f.��{�'3F'"'+- ��'� t Yi�Y.. r'l iJ 1° §.Hf a� ats Wro § 6 f£t rs�rwF' f�11 _ 5'i�, J J �lr t'i:�?l 'rI xA'E 4 �yt kY`i'14 e ase v+ 3§P+� 3i�f aH rv,".L rx�.�YYt �p��� �FNL.L`43c-rL.�i.�._E 5,"h17 R'.l�'1 sa���. �.r2'v �� •.. i i • Average dry weather flow (ADWF), average dry weather flow for the work week (ADWF)X1V/), peak dry weather flow (PDWF), peak wet weather flow (PWWF), the corresponding peaking factors, and resulting depth -to -Diameter ratio (d/D) were projected for each pipeline in the Existing time increment. For the. 29 pipelines recommended ` for upsizing, recommended replacement -diameters, and their corresponding new depth -to -Diameter ratios,.were calculated to satisfy the City's design criteria. Hydraulic modeling results, along with.recommended replacement diameters, for the 29 pipelines in the Existing time increment are presented in Table 7. Tables 8, 9 and 10 present similar findings for the 5-Year, 10-Year and 20-Year (Planning Horizon) time - increments, respectively. An additional 5 gravity main segments satisfy the City's replacement criteria in the 10-Year time increment, with.a total of 610 linear feet. Figures 4 to-9 illustrate all 34 gravity main segments recommended for upsizing. N C a LO LO (n (f) LO lfi (D M O O C)tD .Co (D O Op 00 0) O' O O (D O (D Lr) (f) Ch lA (D (D O U� to O h tt 'd' M co O O O O O O O 0 0 0 0 O .O 0 0 6 0 0 0 O T- V.4" 'r'- O O M N N r r r T T .T T T T T T T T:r T r T T O O .O O O O O ip CD (D �T- �f, (O O 0) C) 00 (A O O O O CD O w h I- I- h h h h 0 N. N h h T T r r r r T 0 0 0 0 0 0 CS' O t= O C; 0 0 O O O T N N N N �- T (e) LO V- r M M Cl) 1* �7 ? It '? N N N N T r s- .T- T T co 9 l V `ct 'ct V Cr) Cr) M M N N N .N _10' d V: tT et tt h h N N N N N N N N N N N N N N N N N N (V N 0 0 0 0 0 0 0 0 0 0 0 O r O C) O C)��T 0) N N (D (Dc L et. [h U. 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O O O O C; 6 0 0 0 0I0 0 o0la0lcolDOININININININININ r r r r r r r r r r r r O O O r On m 0 0 (- O 'C1 Ln O O O tt I-- f- O O N O CO CO WIUIUI�IItItUI4IUICP(P0 M .M M M O o o o 0 0 0 o NI NI NI( VI MI MI NI NI NI NININ N col'' CD N lf� l0 Ln Lf) N 1� V ' O 'O 0 0 0 0 0 0 0 0 0 0 'd'ItiICOICOILnI"lICOICOIa0I11OICDICO (fl CD CD CO N N N N N CM M M r r r r 0 0 0 0 0 0 0 0 N N N N CD CD CD Cp I t0 Un UI "U� N � N ►n CO (O O W C70 V: er `d V: r r T r r N N N V- 'r a- r 0 0 0 O O O O O V' Ln N to O O O N N N N r r r r T N N N r- e- 0 0 O O CoO_ C� O N N N to co M co N N N Ln U-) LO LC) O O O r r r r 0 0 0 CO co T T- r M O '0 i-- Cp fA O N M N N N Cy N N N M M M M CM Lo C7 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 29 of 36 INDUSTRIAL WASTE FLOW REDUCTIONS The Sanitary District of Los Angeles County (LACSD) issues an industrial waste permit for non sanitary sewer. flows to the City of Vernon's sewer system for business within Vernon. The industrial waste permit application is submitted to the City for review and approval prior to submission to the LACSD. As part of the City's review of the application a determination is made' if the City's sewer system has sufficient capacity for the applicants discharge. For significant discharges a flow study is performed. A recent analysis by City staff has determined that in many of the reaches where upsizing the sewer main is recommended large industrial waste dischargers are exceeding their permitted discharge rates. If these dischargers were required to reduce their flow to the rate which is permitted it could potentially reduce the need for upsizing the sewer main. Section 21.4.E if the Vernon Municipal Codes states, "It shall be unlawful for any person to discharge any industrial wastewater in a manner such that the peak flow rate exceeds the designed capacity of; the City sewer, or the peak flow rate approved by the City Engineer in a. persons industrial wastewater discharge permit, or the peak flow rate causes adverse hydraulic conditions within.the sewer as determined by the City Engineer. Any design, construction, and administrative expenses incurred in an effort to accommodate excessive flow rates in the City sewer system shall be borne by the person who discharged the excessive flow of industrial wastewater." Based on.this code section the City has authority to require a reduction in flow from businesses which are violating their Sanitation District permit. Therefore, as an alternative to upsizing a sewer line the City may impose flow reductions on industrial waste dischargers to reduce hydraulic capacity concerns. RECOMMENDED CAPITAL IMPROVEMENT PLAN IEC has generated a phased and prioritized Wastewater Capital Improvement Plan. Cost estimates for each project have been developed based upon the proposed replacement diameter, the estimated length of each project, and the unit costs presented in Table 5. The minimum cost for gravity main segment was estimated to be $20,000. Estimates of probable capital costs provided herein represent "Conceptual' level costs as established by the American Association of Cost Engineers.(AACE) and represent an accuracy'of +50% to -301/o. Cost estimates should be verified and updated during the .pre -design phase of each project. Table 11' presents the capital improvement plan with estimated probable costs of $2.3 Million for Fiscal Years.2009-2013, and $0.2 Million for Fiscal Years 2019-2023, totaling $2.5 Million. As an alternative. -to upsizing the capacity of a sewer line the City may opt to require a reduction in flow of an industrial waste' discharger to such an extent that the existing sewer line will have sufficient capacity to meet the design criteria set forth. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 30 of 36 Table 11 � Recommen GM1 8 203 12 $275 $55,922 GM2 8 129 12 $275 $35,605 GM3 8 326 12 $275. $89,518 GM4 8 325 12 $275 $89,467 GM5 10. 175 16 $335 $58,732 GM6 . 10 371 16 $335 $124,324 GM7 10 363 16 $335 $121,526 GM8* 12 35 16 $335"* $20,000 GM9 16 282 18 $360 $101,541 GM10 16 375 18 $360 $134,954 GM11 16 328 18 $360 $117,963 GM12 16 324 18 $360 $116,735 GM13 12 222 14 $310, $68,690 GM14 12 221 14 $310 $68,465„ GM15 12 219 14 $310 $68,022 GM16 16 1.30 18 $360 $46,955 GM17* 16 267 18 $360 $96,122 GM18** 16 300 18 $360 $107,936 GM19 8 127 12 $275 $35,024 GM20 8 361 12 $275 $99,230 GM21 8 356 12 $275 $97;811 GM22 8 411 12 $275 $113,064 GM23. 15 290 18 $360 $104,465 GM24* 15 219 18 $360 $78,990 GM25 15 207 18 $360 $74,376 GM26* - 15 6 18 $360** -$20000 GM32 10 23 12 $275** $20,000 G.M33* 10 201 12 3275 a Vyr.l,3..r_„3�-.H i • • '{ j� f�vp��`yi�(�; [ iJ J✓p,�` �F .4�Tvt'yJi} try.. 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J � s Ti �i is fir. �zWO OZWJ I CN cc J 1 , r i u C _ _ o r i jN� C l6 .0 > -a o r 40 i I I m co, co i I I! i J EXHIBIT B Infrastructure Engineering Corporation CITY OF VERNON - SEWER SYSTEM MANAGEMENT PLAN VOLUME II - APPENDIX "O" SYSTEM EVALAUTIONAND CAPACITY ASSURANCE PLAN Date: March 19, 2010 —FINAL October 16, 2009 -FINAL DRAFT September 4, 2009 -2na DRAFT September 19, 2008 —1st DRAFT Subject: 2008-09 SEWER SYSTEM HYDRAULIC ANALYSIS Prepared By: Genevieve Chambliss, E.LT.; Jeff Kirshberg Ph.D., P.E. (C67882) Reviewed By: Scott Humphrey, P.E: (C64206) EXECUTIVE SUMMARY In support of the Sewer System Management Plan (SSMP), Infrastructure Engineering Corporation (IEC) has performed a hydraulic analysis of the wastewater collection system in the City of Vernon (City). IEC developed wastewater flow projections for the Existing, 5-Year, 10-Year and the 20- Year (Planning Horizon) time increments. As summarized in Table 3, the City's Existing average dry weather flow of 5,546 gpm is anticipated to increase by 0.7% per annum, reaching 6,381 gpm in. the 20-Year time -increment. In order to estimate the 5-Year,10-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per _anum increase was assumed, consistent with the City's 2005 Urban ater ManagementPlan. The City willrevise their Urban Water Management Plan in.2010, and re-evaluate the projected growth of water demands as part of the plan's development. As projected demands are anticipated to reflect Governor Schwarzenegger's pending 20x20201egislation, the City's water demands, and respective wastewater projections, may decrease as much as 20% in order to achieve statewide compliance goals. IEC utilized MWH Soft, Inc.'s H2OMap Sewer software to create a wastewater collection system model for the City.The model was used to evaluate existing City owned wastewater facilities and provide recommendations for upsizing. The City recently completed the 2009 Wet Weather Flow Study, which included wastewater flow data obtained for (10) sites. Table 4 presents the comparison between the results generated with the H2OMap steady state scenarios and the City's flow meter data, illustrating a successful calibration effort. Under Existing flow conditions,29 gravity main segments (measured manhole to manhole) satisfy the City's replacement criteria, for a total of 6,997 linear feet.. An additional 5 gravity mains segments satisfy the City's replacement criteria in the 10-Year time increment, with a combined additional length of 610 ft. All 34 gravity main segments have been recommended for upsizing in compliance with the City's design criteria in the 20-Year (Planning Horizon) time -increment. 5242 Katella Ave, Suite 205, Los Alamitos, California 90720 T 562.344.9060 F 562.344.9055 www.iecorporation.com 0 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 2 of 36 These gravity main segments; illustrated in Figures 4 through 12, have been included in the City's proposed Wastewater Capital Improvement Plan (CIP), with estimated_ probable costs of $2.3 Million for Fiscal Years 2009-2013, and $0.2 Million for Fiscal Years 2019-2023, totaling $2.5 Million. Estimated probable costs provided represent Order of Magnitude level costs as established by the American -Association of Cost Engineers (AACE) and represent an accuracy of +50% to - 30%. WASTEWATER FLOW PROJECTIONS As summarized in Table 3, the City's Existing average dry weather flow of 5,546 gpm is anticipated to increase by 0.7% per annum, reaching 6,381 gpm in the 20-Year time -increment. In order to estimate the 5-Year, 10-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per anum increase was assumed, consistent with the City's 2005 Urban WlaterManagement Plan. The City will revise their Urban Water Management Plan in 2010, and re-evaluate the projected growth of water demands as part of the plan's development. As projected demands are anticipated to reflect Governor Schwarzenegger's pending 20x2020 legislation, the City's water demands, and respective wastewater projections, may decrease as much as 20% in order to achieve statewide compliance goals. Average Dry Weather Wastewater Flow (ADW7F) Average dry weather wastewater flow (ADWF), or base flow, is domestic (or sanitary) wastewater flow from residential, commercial, and institutional (schools, churches, hospitals, etc) sources, plus industrial wastewater. The wastewater flow is affected by population and land uses in an area. Wastewater flow varies throughout they day in response to personal habits. and business operation. To calculate the City's ADWF, each parcel's 2007 average dailywater demand multiplied by an estimated return -to -sewer ratio. The City's 2007 water billing records were analyzed, and a list of the Major Water Users, with average daily water demands greater than 10,000 gpd, was compiled. As presented in Table 1, there are 91 Major Users accounting ,for 7:9 mgd, or 89%, of Vernon's total water demand. Water bills were assigned to individual parcels; as illustrated in Figure 1. For those parcels serviced by the California Water Company, in sewer basins 14,15,17,18, 20, 21 and 22, water billing records were not available. Each parcel's average daily water demand was then multiplied by a corresponding return -to -sewer (RTS) ratio, based on land use: Initially; for industrial:and residential parcels; RTS ratios of 0.95 and 0.65 were utilized respectively, with the exception of the Seven-up Bottling Company. For this parcel a RTS ratio of 0.2 was used, to account for the quantities of water consumed in their beverage preparation. For those parcels serviced by the California Water Company, available wastewater flow meter data was utilized to estimate an ADWFindustrial duty factor of395 gpd/acre. Additionally, when available, average dry weather flows were obtained from wastewater discharge permits. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 3 of 36 For the basins monitored in the City's recent 2009 Wet Weather Flow Study, estimated average daily flows were compared to those recorded in the study, as presented `in Table 4 in a subsequent section. In addition to confirming the 395 gpd/acre' estimate for California Water Company customers, RTS were specifically altered for the following basins as monitor data revealed lower base flows than previously anticipated: • Basin 5 adjusted to reflect a Return -to -Sewer Ration of 0.75 • Basin 6 adjusted to reflect a Return -to -Sewer Ration of 0.60 • Basin 9 adjusted to reflect a Return -to -Sewer Ration of 0.75 • Basin 13 adjusted to reflect a Return -to -Sewer Ration of 0.50 • Basin 14,adjusted to reflect A Return -to -Sewer Ration of 0.197 Flows measured for Basins 1 and 4 still conformed to a 0.95 RTS, and as such, flows projected for parcels not measured in the 2009 Wet Weather Flow Study are still assumed to. generate wastewater with a RTS of 0.95. Average Dg Weather Wastewater Flow Pr jections Due to the industrial and built -out nature of the City, future wastewater flows will most likely be from new industrial users, which will be evaluated on a case by case. basis. However, in order to estimate the 5-Year, 10-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per anurn increase was assumed; consistent with the City's 2005 Urban Vat erManagementPlan. Table 3 presents the City's projected ADWF for each time increment. Table 1 - 2007 Major Water Users in the City of Vernon 1126 622,484 1744 383,328 1 6303-005-030 3049 VERNON AVE 1,073,017 3555 :: 35,625 2017 31,424 .1707 156 2 6302-020-038 2522 E 37TH ST 534,535 2050 532,791 1944 1,744 1739. 240,231 3 6303-017-006 3316-3376 E 44TH' ST 513,909 3304 85,643 3301 188,035 4 6304-011-005 4900 E 50TH ST 451,689 2669 451,089 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 4 of 36 Table 1 - 2007 Major Water Users in the City of Vernon 5 6302-003-023 2501 E 28TH ST 400,547 1476 400,547 6 6303-002-025 3220 E 26TH ST 363,981 2071 300,391 2070 61,012 2031 2,019 3101 320 1979 240 7 6310-009-019 5215 BOYLE-AVE 341,666 3485 328,405 428 7,554 557 . 5,707 8 6308-018-019 5801 E 2ND ST 270,079 3493 270,079 9 6310-008-007 5383 ALCOA AVE 226,126 3464 226,126 10 6308-007-019 4460 PACIFIC BLVD 202,198 11701. 202,198 11 6302-020-041 2727 VERNON AVE 199,296 3537 198,728 1975 568 12 6310-027-022 6270 BOYLE AVE 138,259 3366 90,647 3366 47,612 13 6303-029-900 2828-2970 E 50TH ST 135,839 3597 108,937 6303-029-901 268 26,901 14 6303-019-015 4633 DOWNEY RD 134,488 1682 133,669 1613 820 15 6303-009-007 3501 VERNON AVE 131,027 3420 131,027 16 .6302-020-059 3883 SOTO ST 128,756 3406 127,717 3368 1,039 17 6303-001.012 2923 FRUITLAND AVE 127,816 262 127,816 18 6303-012-041 3055 E 44TH ST 114,335 3536 114,335 19 6303-002-021 3270 E 26TH ST - 102,626 3525 ' 47,604 35.216 47,489 1950 . 4,455 " 401 2,228 1949 850 20 6304-021-049 4215 EXCHANGE AVE 90,602 2271 83,171 2270 7,431 21 6303-007-026 3399 VERNON AVE 88,965 3402'- 88,965 22 6308-005-009 4553 SEVILLE AVE 84,446 1098 47,356 3242 37,091 23 6304-027-015 4224 DISTRICT BLVD 83,803 2213 83,198 2567 559 2551 45 24 6302-001-038 2750 JEWEL AVE 80,124 1865 80,120 1892 4 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 5 of 36 25 6302-001-044 2731 SOTO ST 68,441 1758 68,441 26 6308-016-049 2300 E 52ND ST 59,543 . 3326 59,543 - 27 6302-007-023 .. 2807 SANTA FE AVE 56,168 3371 56,168 28 6308-005-015 2638 VERNON AVE 53,43.E 1071 32,807 3593 20,628 29 6310-027-028 5950 ALCOA AVE 63,020 3221 51,471 3173 1,480 3174 70 30 6303-010-041 4317 DOWNEY RD 50,794 375 50,794 31 6310-008-005 5151.ALCOA AVE 50,600 3467 50,600 32 6808-01.3-044 4510 ALAMEDA ST 50,212 3280 50,212 33 6302-020-057 2750 E 37TH ST 49,038 1508 39,591 3425 9005 3425 443 34 6303-024-007 2959, E 50TH ST 45,700 1150 45,700 35 6302-013-029 2121 E 38TH ST 44,597 3205 441597 36 6310-002-015 3336 FRUITLAND AVE 43,366 3315 43,366. 37 6308-017-030 5525 SANTA FE AVE 43,179 3574 43,179 38 5169-021-003 3225 WASHINGTON BLVD 4.1,800 3144 38,904` 675 2,89E 39 6310-002-029 5353-5401 DOWNEY RD 40,712 1964 40,712 40 6303-024-011 2905 E 50TH ST 40,05E 2053 40,056 41 6302-003-010 2601 E 26TH ST . 39,093 1535 39,093 42 6302=014-013 2323'E 38TH ST 37,853 3038 37,853 - 43 .5169-029-020 2775 E 26TH ST 34,338 - 640 34,338 44 6303=028-0.14 5100 BOYLE AVE . 33,322. 641 33,322 45 6308-010-017 5075 PACIFIC BLVD 32,978 1343 29,104 543 3,873 46 6304-020= 4525 DISTRICT BLVD 32,141 2607 28,963021 2604 3,178 47 6302-010-013 2910 ROSS. ST 31,248 ` 1866 31,248 48 6304-012-004 4879 FRUITLAND AVE 30,344 2677 30,344 49 6310-027-0.86 6180 ALCOA AVE 29,500 3150. 29,500 50 6303-008-008 3308 BANDINI BLVD 29,088, 3134 16,233 1549 12,855 51 6303-016-004 3250 E 44TH ST . 28,346 3110 28,346 52 6308-015-077 2100 E 49TH ST 28,330 2028. 22,213 3616 6,117 53 6310-002-018 33..08 FRUITLAND AVE 28,330 961 28,330 0 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 6 of 36 Table 1-- 2007 Major Water Users in the City of Vernon 54 6303-011-047 3420 VERNON AVE 26,883 1671 15,280 . 3391 11,603 . 55 6310-027-039 5970/5980 ALCOA AVE ` 25,914 3175 25,914 56 6303-013-045 2851 E 44TH ST 25,563 1039 25,563 57 6303-005-032 .3163 VERNON AVE 23,815 3554 23,815 58 6302-009-038 2622 ALAMEDA ST 23,784 3459 23,784 59 5169-034-019 3305 E 26TH ST 22,567 2041 22,567 60 6304-021-052 4383 EXCHANGE AVE 22,446 2276 22,446 61 6303-009-015 3615 VERNON AVE 22,292 1653 22,292 62 6304-027-005 4955 MAYWOOD AVE _ 21,919 2317 21,919 63 6302-017-901 4305 SANTA FE AVE 21,799 3461 16,440 1705 3,4202064 1,920 1581 18 64 6308-017-015 2001 E 57TH ST 21,325 1757 21,321 1585 4 65 6303-027-002 3301 FRUITLAND AVE 21,012 962 21,012 66 6303-013-042 2809 E 44TH ST 20,639 1189 20,639 67 6303-007-030 3425 VERNON AVE 19,803 3511 19,5982047 205 68 6302-012-01.9 2037 E 38TH ST 1907 2123 15,808 2123 3,269 69 6308-014-025 1955 E 48TH ST 1:8,866 3447 18,671 1783 155 70 5169-034-0.10 3365 E.26TH ST 18,575 1699 18,575 . 71 6308-016-038 5200 ALAMEDA ST 18,241 3167 16,927' 3166 1,314 72 6303-011-049 3141 E 44TH ST 161979 3412 16,979 73 6308-012-022 2300 VERNON AVE 16,208 630 13,337 1825 2;871 74 6303-026-012 3341 E 50TH ST 16,083 3545 16,083 75 6303-020-010 4700 BOYLE AVE 15,899 722 15,899 76 6308=016-025. 2340 E 52ND ST 15,698 1873 15,698 77 6302-009-028 2026 E'27TH ST .15,390 1454 15,390 78 6303-004-035 2822 SOTO ST 15,235 292 15,235 79 6308=018-022 .. 5700 1ST ST 15,190 3608 15,190 80 6308-017-042 2100 E 55TH ST 15,165 3521 15,165 81 6310-027-044 6033/6063 MALBURG VVY 15,108 3268 15,108 82 6310-004-008 3365 SLAUSON AVE 14,118 3163 14,118 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 7 of 36 Fg4 �'i 74 '� sa'pp 7 WIN I"�kt`A k���li�.,.�av 83 6302-017-024 2045 VERNON AVE 13,597, 583� 13,597 84 6310-002-036 5164 ALCOA AVE 13,515 693 13,515 85 6303-011-042 3450 VERNON AVE 13,478 3599 13,478 86 6310-007-003 5800 BOYLE AVE 12,616 3527 12,616 87 6308-009-038 4646 HAMPTON ST 12,454 3478 12,454 88 6303-002-011 2890/3001 SIERRA PINE AVE 11,820 3605 10,304 3606 670 446 393 591 268 . 1681 168 3033 16 89 6304-023-010 4309 FRUITLAND AVE 11,480 2283 9,287 2282 2,193 90 6303-006-064 3285 VERNON AVE 11,159 3533 11,159 91 6308-015=063 4800 ALAMEDA ST 10,083 3571 9,2513378 832 Total 7,898,892 7,898,892 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 9 of 36 y�-fig 1.�. �,D kr1 1 138 162 242 1.5 406 2.5 2 19 23 44 2.0 66 2.9 3 195 229 325 1.4 559 2.4 4 1,289 1,509 1,649 1.1 3,174 2.1 5 495 579. 641 1.1 1,229 2.1 6 199 232 330 1.4 567 2.4 7_ 4 5 10 2.0 15 2.9 8 9 10;' 20 1.9 30 2.9 9 578 676 827 1.2 1,516 2.2 10 1,246 1,462 1,600 1.1 3,082 2.1 11 275 323 436 1.4 767 2.4 12 91 107 175 16 283 2.6 13 215 240 354 1.5 585 2.4 14 198 232 330 1.4 565 2.4 15 34 40 _ - 73 1.8 _ 113 - 2.8 16 276 323 439 1.4 768 2.4 17 8 10 20 2.0 29 2`.9 18 27 32 " 60 1.9 91 2.8 1.9 22 26 50 1.9 75 2.9 20 62 72. 120 1.7 193 2.7 21 1 1 2 2.5 2 2.9 22 8 10 " . 19 1.9 28 2.9 23 50 59. 100 1.7 160 2.7 24 75 88 142 1.6 232 2.6 25 30 36 66 1.8 100 2.8 . Total 5,546 6,485 8,072 9.6 94,636 2.6 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 10 of 36 Table 3 - Wastewater Flow Projections by Basin 1 138 143 149 159 2 19 20 21 22 3 195 202 ' 209 224 4 11289 1,337 1,384 1,484 .5 495 513 531. ` 569 6 199 206 213 229 7 4 5 5 5 8 9 9 9 . 10 9 578 599 . 621 665 10 1,246 1,289 1,335 11433 11 275 284 294 316 12 91 94 97: 105 13 215 223 231 247 14 198 206 213 228 1.5 34 36 37 39 16 276 286 297_ '318 17 8 9. 9 10 18 27 28 29 31 19 22 23 24 25 20 62 64 66 71 21 1 1 1 1 22 8 8 9 9 23 50 51 53 58 24 75 77 80 86 25 30 32 33 35 Total 5,546 5,744 5,948 1 6,381 City of Vernon Sewer System.Management Plan Technical Memorandum No. 9 March 19, 2010 Page 11 of 36 Average Dry. Weather Wastewater Flow during the Work Week (ADS) Flow data collected and discussed in the 2009 Wet Weather Flow Study shows a significant increase in wastewater flow during the traditional work week, Monday through Friday. To account for this two -tiered flow pattern, ADWF was multiplied by a work week peak factor of 1.17. The result was the ADWF Work Week (ADWI� W,WW,� scenario. Peak Dry Weather Wastewater Flow (PDWF) Wastewater flow varies throughout the day in response to personal habits and business operation. Peak Dry Weather Flow (PDWF) accounts for peak usage patterns, and includes estimates of Groundwater Infiltration (GWI). GWI is defined as groundwater entering the collection system through pipe joints and manhole walls due to an aging system or,improper construction. The magnitude of GWI depends on the depth of the groundwater table above the pipelines, the percentage of the system submerged, and the physical condition of the system. Variation in groundwater levels in the City is seasonal in, `nature. The GWI tends to be low during the summer and fall months (dry weather) and increases gradually as the wet weather season progresses. While GWI is affected by rainfall, it responds gradually and is not directly related to any one individual rainfall event. It is assumed that the ADWF and GWI are taken into account in the peak dry weather flow equation. Therefore, no further contingency for these components are necessary. To estimate PDWF, a Peak Dry Weather. Factor curve (in cfs) was developed specifically for the City, utilizing the'data.collected in the 2009 Wet Weather Flow Study. The 2009 Wet Weather Flow Study produced' sufficient data to derive a peak dry weather curve, and included measured flows for nine (9) sites within the City's sewer service area. Two separate rain events occurred during this study. Any data obtained during these rain events (or within 48 hours of a rain event) was classified as wet weather data. All other data was classified as dry weather data and was analyzed to calculate Average Dry Weather Flow Rates for each flow meter. A Peak Dry Weather Curve was derived by graphing the peaking factor derived from the measured Peak Dry Weather Flow Rates versus the Average Dry Weather Flow Rates for each of the flow monitoring sites. An equation for the Peak Dry Weather Factor (PWWF) was then. generated using a "best -fit," exponential curve. This curve is illustrated as the "black" curve in Figure 2, and corresponds to the following recommended Peak Wet Weather Factor, based on ADWFWW. in cfs: Peak Dry Weather Factor =1.30 x (Average Dry Weather Flow during the Work Week)" When available, industrial discharge permits were used to estimate peak dry weather flows. For these parcels, estimates of PDWF were obtained directly from available permits, and not from the City's Peak Dry Weather Factor curve and ADWFWW. r City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 12 of 36 For purposes of comparison, the Los Angeles Department of Water and Power's (LADWP) Peak Dry Weather Curve, as published in the LADWT Bureau of Eng ineering g Manual —Part F, is also presented. It isworth noting that due to the City's Industrial nature, and predictable usage Patterns, measured peaks are substantially lower than those previously calculated utilizing the LADWP Peak Dry Weather Curve. Figure ff;u &5 U 04 .0.0 0 15 4 4-is 6 2 Peak Wlet Wleatber Wlastewater Flow (PWIWF) Peak Wet Weather Wastewater Flow (PPVvF) is estimated as Peak Dry Weather Flow (PDWF) plus Rainfall Dependent Infiltration/Inflow (RDI/I). RDI/I is storm water that enters the wastewater collection system in direct response to the intensity and duration of individual rainfall events. RDI/I may recede gradually after a storm; however, any residual flow is considered to be . a general increase in GWI. To estimate PVVWF, a Peak Wet Weather Factor curve (in cfs) was developed specificaUy for the City, utilizing the data collected in the 2009 Wet Weather Flow Study. The 2009 Wet Weather Flow Study produced sufficient data to derive a peak wet weather curve for the one year storm, and included measured flows for nine (9) sites within the City's sewer service area. Two separate rain City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 13 of 36 events occurred during this study. Any data obtained during these rain events (or within 48 hours of a rain event) was classified as wet weather data. This. data was analyzed to calculate Peak Wet Weather Flow Rates for each flow meter. A Peak Wet Weather Curve was derived by graphing the peaking factor derived from the measured Peak Wet Weather Flow Rates versus the Average Dry Weather Flow Rates for each of the flow monitoring sites. An equation for the Peak Wet Weather Factor (PWWF) was then generated using a "best -fit," exponential curve. This curve is illustrated as the "green" curve in Figure 2, and corresponds to.the following recommended Peak Wet Weather Factor, based on ADWFWW in cfs: Peak Wet Weather Factor = 2.32 x (Average Dry Weather Flow during the Work Week)" It is worth noting that due to the City's Industrial and built -out nature, predictable usage patterns and complete storm drain coverage throughout the City's service area, measured wet weather peaks are lower than those dry weather peaks previously calculated utilizing the LADWP Peak Dry Weather Curve. HYDRAULIC MODEL DEVELOPMENT IEC utilized MWH Soft, Inc.'s H2OMap Sewer GIS 8.0, SP 1, Update #3 software to create a wastewater collection system model for the City. The model was used to evaluate existing City owned wastewater facilities and provide recommendations for upsizing. The main components involved in developing the City's sewer hydraulic model are as follows: • Assignment of attribute data to emulate the City's physical facilities. • Scenario development for each relevant planning period. • Loading of existing and _projected wastewater flows. The City's most current AutoCAD/GIS database was utilized as the basis for the model infrastructure. All City owned wastewater facilities, excluding laterals, were then input into the hydraulic model from the. AutoCAD/GIS database. Invert elevations, length, location and diameters for the approximately 1,000 gravity mains were input into the H2OMap hydraulic model. For each time -increment, four (4) steady state scenarios were created in the hydraulic model to emulate the following: average. dry weather flow (ADWF); ADWF during the work week (ADWFWVV); peak dry weather flow (PDWF); and peak wet weather flow (PWWF). Consistent with the 2005 Urban W/aterlVlanagementPlan, an annual growth rate of 0.7% was utilized in projecting average daily demand in each .time increment. 1W City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 14 of 36 HYDRAULIC MODEL CALIBRATION When calibrating a hydraulic model, the best available metered data is utilized to either confirm or correct the results predicted by.the model. The City recently completed the 2009 Wet Weather Flow Study, which included measured flows for nine (9) sites within the City's sewer service area. IEC used the measured ADWF, ADWFWW, PDWF and PWWF.flows to calibrate the hydraulic model Table 4 presents the comparison between the results, generated with the H2OMap steady state scenarios and the City's flow meter data. Based on the results presented in Table 4, the H2OMap Sewer Model is adequately calibrated, with 100% of the average flow rates predicted within 10% of average flows measured. A majority of peak flows are also with 10%, with all but one of the remaining locations conservatively predicting higher flows in the model than measured. P- yv z7 a� �o wv .�,Z4 C�, O v; u~`n O x u u ON a` 4 jj��y '�) �k.V� `N, F"u'k v `'cw�'!• %?'�FFq'yR,.F l i 5.' g=gP3-��Fkzf i� f rs <7..a ON` -vi: A x KIS IN � f 5 a s777 d • t0r.: y�ir- rat' • •• lgg � (iY wla F7 3 y �I,I J� s y� RIM ,"z} M AIR pa ill ( i 1 2 k�"SfT ;n • • • tn CL '"' — _.__ • %� (� ..:,� gyp,/, ��...,,� ��� ��� - 3 o to LD LL- LL O o ii ILL, ,y fi� z '� ��%• yam - w1' �i,- � - - L fV ji f ! •• g ` !�. /� T j try � •,� f1�! ,.'�%!gyp �....�l/ i �t . + j;L,__ � j �� r. i a ig f LL - ;� y� ! IT ' iry+ 1. Jii 'Jill 1 c ` (-+C { f _ City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 17 of 36 GRAVITY MAIN REPLACEMENT CRITERIA The National Clay Pipe Institute (NCPl) recommends that smaller pipelines (8" and smaller) be designed to flow at levels not exceeding half -:full (d/D=0.50) during peak conditions. For larger pipelines, the tributary area is larger. Local deviation from design wastewater flows tend to balance one another for larger areas, resulting in a closer correlation of actual and design wastewater flows. Consequently, the NCPI recommends that these larger wastewater pipelines should be designed for a d/D not to exceed 0.75. In analyzing the City's existing wastewater pipelines, it is unnecessary to allow for an excessive factor of safety. This, is because the City's wastewater basins are largely built out, and future development patterns are relatively certain. As new major industrial users apply for wastewater service, they will be evaluated on a case -by -case basis, including estimated flow rates and impacts to City -owned wastewater facilities. Therefore, City -owned wastewater pipelines may be flowing at levels above a d/D of 0.50 and still be operating satisfactorily. Remainingpipeline capacity, above d/D = 0.75 has been reserved to handle emergency flows such as I&I beyond that planned for in a design storm, and to provide for ventilation within the pipe. This should not be considered a component of the pipeline capacity. In an effort to account for the City's industrial and built -out nature, and ensure that gravity main segments are replaced due to capacity and, flow constraints, the following describes the City's replacement criteria: Minimum velocity: 2 feet per second • Maximum velocity: 10 feet per second • Maximum Peak Wet Weather Flow depth -to -Diameter d/D = 0.75 • Maximum Peak Dry Weather Flow .depth -to Diameter d/D. = 0.55 for _pipes less than 12-inches in Diameter. • Ail pipes requiring replacement shall be designed in accordance with the City's design criteria. In the event that a gravity main does not qualify for replacement, but the pipeline immediately upstream.requires upsizing, one additional replacement stipulation may be applicable. The purpose of this replacement stipulation is to insure. that pipe -reaches increase in diameter as they progress downstream,. and prevent, wherever possible, pipe -reaches from fluctuating up and down in diameter. If a gravity main requires upsizing to a diameter larger than the diameter of the gravity main(s) immediately downstream in the same pipe -reach, and the downstream pipe(s) are less than 750 ft :in length before conveying flow to a gravity main of equal or larger diameter than the diameter recommended for the deficient upstream gravity main, then the downstream gravity main(s) of less than 750 ft shall be upsized to the same diameter of the upstream pipe. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 18 of 36 GRAVITY MAIN DESIGN CRITERIA - In analyzing a wastewater system, it is necessary to derive standards regarding the amount of flow that may be efficiently conveyed. A set of standards for the City's gravity mains was developed, based on the City's standard criteria, typical industry standards and conversations with City Staff. All gravity main segments which satisfy the City's replacement criteria, shall be upsized in accordance with this design criteria. In an effort to provide reliable gravity sewer service while minimizing excessive wear through the City's gravity mains, sanitary sewers shall be designed according to the following design criteria: • Pipes less than 12-inches in diameter: 1/2 full at peak flow • Pipes 12-inches or greater in diameter: 'A full at peak flow • Minimum. velocity: 2 feet per second • Maximum velocity: 10'feet per second • Manning's n: 0.013 • Minimum pipe replacement diameter 8-inches GRAVITY MAIN UNIT COSTS Unit costs used to.develop capital cost estimates for proposed facilities were developed using the Engineering News Record Construction Cost Index (ENR-CCI) 20-city national average, and recently completed projects by IEC of a similar nature. These estimates are based on the best available data at the time of this report; however; since prices of materials and labor fluctuate with time, new estimates should be obtained during pre -design for proposed facilities to confirm budget amounts. Recent market trends have indicated substantial volatility in the price of construction materials such as steel and concrete. These factors, coupled with the high level of similar work currently being performed, have on occasion resulted in a generally unpredictable bidding environment. The ENR-CCI is an inflation index used to adjust prices from one time period to another. The cost estimates presented in this report are based upon an ENR-CCI cost index of 8,596 for October 2009. Costs estimated herein for recommended facilities should be adjusted in the future either by making new estimates or by comparing the future ENR-CCI index to 8,596. A factor of 20 percent of total construction cost has. been used for engineering and administration, which includes, but is not limited to the following: • Planning and design reports • Design • CEQA compliance 0 Permits City of Vernon Sewer System Management Plan Technical Memorandum No. 9 Match 19, 2010 Page 19 of 36 • Surveying • Service during construction (submittals, as-builts) • Inspection - A factor of 30 percent has been added for contingencies. These engineering, administration and contingency factors have been incorporated into all unit costs. Estimates of probable capital costs provided represent Order of Magnitude level costs as established .by the American Association of Cost Engineers (AACE) and represent an accuracy of +50% to -30%. Table 5 presents the gravity main unit costs used in developing capital costs. Table 5 - Gravity Main Unit Costs 10.. $250 12 $275 14. $310 15 $315 16 $335 18 $360. 21 $420 24 $455 Note: Units costs include: Engineering, Legal, Administration, and Contingencies City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 20 of 36 HYDRAULIC MODELING RESULTS Under existing flow conditions, 29 'gravity main segments (measured manhole to manhole) satisfy the replacement criteria in peak conditions..Of these, 22 gravity main segments satisfy the replacement criteria in peak dry conditions due to capacity. The remaining 7 gravity mains segments have been identified to ensure that pipe -reaches increase in diameter as they progress downstream, and prevent, wherever possible, pipe -reaches from fluctuating up and down in diameter. Table 6 presents a summary of the 29 gravity main segments recommended for upsizing in the Existing time increment, for a total of 6,997 linear feet; Table 6 - Summary of Existing Pipeline Recommendations 8 8 ;2,239 10 6 1,334- _ 12 4 697.- 15 4 722 16 7 2,006 TOTAL 29 6,997 Average dry weather flow (ADWF), average dry weather flow for the work week (ADWFWW), peak dry weather flow (PDWF), peak wet weather flow (PVWVF), the corresponding peaking factors, and resulting depth -to -Diameter ratio (d/D) were projectedfor each pipeline in the Existing time increment. For the 29 pipelines recommended for upsizing, recommended replacement -diameters, and their corresponding new depth -to -Diameter ratios, were calculated to satisfy the City's design criteria. Hydraulic modeling results, along with. recommended replacement diameters, for the 29 pipelines in the Existing time increment are presented in Table 7. Tables 8, 9 and 10 present similar findings for the 5-Year, 10-Year and 20-Year (Planning Horizon) time - increments, respectively. An additional 5 gravity main segments satisfy the City's replacement criteria in the 10-Year time increment, with a total of 610 linear feet. Figures 4 to-9 illustrate all 34 gravity main segments recommended for upsizing. fd P P. O �z O v p v� C O u .� O s N �u c�dp a z .�.. 5 •1 �y��, {L� i k _ • J' Vi i 1N gxC 4 S,,,nt�.yi S Jf, j y. 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QLY � '�� ��� it f � R "t o • s • o • • • • a • • • • • t :g r r� olololololol�olololololo col col 001 col Ni NI NI NI NI NI NI N IT-r It— r V.-r r T.- V.- r- r r OR- IRS — $��4 `�"���5��. 1. • • • • • • • �i��'S�,�YiS � f }ii2 Gi 1�'ry • • • • • • d Fr"vgF b° • 3& �'�-f 1� Y r • '/i 4 �Zr . i SY � • �.. , Xt�3' Ng 1151,11 f2 �z ��, �.Y F•�(�� sal � �, _.K xx�¥ vf� Rj ' _R S • a( 8 S f S SS �l f ��� R�f �`� jt£ 3 ..... t °2 g�ra ���4h1t • • .• • • • �v��tMa��1 tS£ {L r rI e :Ga6 'k'r� City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 29 of 36 INDUSTRIAL WASTE FLOW REDUCTIONS The Sanitary District of Los Angeles County (LACSD) issues an industrial waste permit for non - sanitary sewer flows to the City of Vernon's sewer system for business within Vernon. The industrial waste permit application is submitted to the Cityfor review and approval prior to submission to the LACSD. As part of the City's review of the application a determination is made if the City's sewer system has sufficient capacity for the applicants discharge. For significant discharges a' flow study is performed. A recent analysis by City staff has determined that in many of the .reaches where upsizing the sewer main is recommended large industrial waste dischargers are exceeding their permitted discharge rates. If these dischargers were required to reduce their flow to the rate which is permitted it could potentially reduce the need for upsizing the sewer main. Section 21.4.6 if the Vernon Municipal Codes states, "It shall be unlawful for any person to discharge any industrial wastewater in a manner such that the peak flow rate exceeds the designed capacity of the City sewer, or the peak flow rate approved by the City Engineer in a persons industrial wastewater discharge permit, or the peak flow rate causes adverse hydraulic conditions within the sewer as determined by the City Engineer. Any design, construction, and administrative expenses incurred in an effort to accommodate excessive flow rates in the City sewer system shall be borne by the person who discharged the excessive flow of industrial wastewater." Based on this code section the City has authority to require a reduction in flow from businesses which are violating their Sanitation District permit. Therefore, as an alternative to upsizing a sewer line the City may impose flow reductions on industrial waste dischargers to reduce hydraulic capacity concerns. RECOMMENDED CAPITAL IMPROVEMENT PLAN IEC has generated a phased and prioritized Wastewater Capital Improvement Plan. Cost estimates for each project have been developed based upon the proposed replacement diameter, the estimated length of each project, and the unit costs presented in Table 5. The minimum cost for a gravity main segment was estimated to be $20,000. Estimates of probable capital costs. provided herein represent "Conceptual" level costs as established by the American Association of Cost Engineers (AACE) and represent an accuracy of +50% to -30%. Cost estimates should be verified and updated during the pre -design phase of each project. Table 11 presents the capital improvement plan with estimated probable costs of $2.3 Million for Fiscal Years 2009-2013, and $0.2 Million for Fiscal Years 2019-2023, totahng.$2.5 Million. As an alternative to upsizing the capacity of a sewer line the City may opt to require a'reduction in flow of anindustrial waste discharger to such an extent that the existing sewer line will have sufficient capacity to meet the design criteria set forth. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 30 of 36 . . aq. `-hv` 'a?.1"t ': kt Fbr - r� qA,{ ,�, �r,111 f' S t - �zmi ®aew .. r3x .afo r k,ai� GM1 8 203 12 $275 $55,922 GM2 8 129 12 $275 $35,605 GM3 8 326 12 $275 $89,518 GM4 8 325 12 $275 $89,467 GM5 10 175 16 $335 $58,732 GM6. 10 371 16 $335 $124,324 GM7 10 363. 16 $335 $121,526 GM8* 12 35 16 $335** $20,000 GM9. 16 282 18 $360 $101,541 GM10. 16 375 18 $360 $134,954 GM11 16 328 18 $360 $117,963 GM12. 16 324 18 $360 $116,735 GM13 12 222 14 $310 $68,690 GM14 12 221 14 $310 $68,465 GM15 12 219 14 $310 $68,022 GM16 16 130 18 $360 $46,955 GM17* 16 267 18 $360 $96,122 GM18** 16 300 18 $360 $107,936 GM19 8 127 12 $275 $35,024 GM20 8 361 12 $275 $99,230 GM21 8 356 12 $275 $97.,811 GM22 8 411 12 $275 $113,064 GM23 15 290 18 $360 $104,465 GM24* 15 219 18 $360 $78,990 GM25 15 207 18 $360 $74,375 GM26* 15 6 18 $360** $20,000 GM32 10 23 1.2. $275** $20,000 G.M33* 10 201 12 $275 $55,257 GM34* 10 200 12 $275 $55,106 GM27 8 184 12 _$275 $50,728 GM28 8 114 12 $275 .$31,273 GM29 8 265 12. $275 $72,990 GM30. 8 39 12 $275. $10,695 GM31* 8 8 12 $275** $20,000 Total 7,607 $2,461,484 " - gravity main upsized due to diameter fluctuation criteria; not capacity *• - Minimum cost estimate of $20,000 per gravity main segment utilized .: C W c Q. m « d L c E EL IL C: U w U O y� w A d a3i � W A 3 ( D LL O O O 0 N O CO CV m (-12 Ni.. c� °c $ LO 40 M Lbo Al 0 Cc �_ ea u— u v o = u_ _ a) E > i m C N .� N i._.. _ ... a� m e� 3 �.. _o.. _ _. -_ -- -- ` adInanna f i i t k i 5 I 1 i i s ... .......... iiy ` S S ------ - - ------ --- - ------ 3 - -- ---- - ----------- --- C: L T.. v-- i 1 - VLYY�v7.I..__ Z�.Y.M e __ ..- -------- 9ny94 agues 1 1 - 6WJ I 1_.-A1= t z ! 1 :pp ' 777 !'t y j �: 4 -- 1 � coS y 1 co ss _ j ' i < 1 I v -- — -- f 4S aPauialy Legend i i m- --- , -- Basin 5 Gravity. Main ; ;—y ______ -.. ji — -I ii i a .l ! I Recommended for Fiscal Years 2009-2013 E 3 City of Vernon Gravity Main t}- -- i l Q ; .r q3 County Sanitation District Line --- 3' p • Basin 5 Manhole— - _ - I { I Li /, i f - , - - 48th St - --- ? - — .-- �� TV ff 49th $t GM 13 50tn St 1-7 UL 51 th St io. I 1 I E GM18 Fruitland ve I G M 17 52th St i Lit i 1 1 tr i s 3 Infrastructure c6 1 I-- I Q{ IN V City of Vernon Sewer System Management Plan Wastewater Capital Improvement Plan I�--I for Basin 5 �1 Feet October 2009 0 500 1,000 Figure 6 ` Legend t '\� Basin 13 Gravity Main Recommended for Fiscal Years 2009-2013 City of Vernon Gravity Main County Sanitation District Line _ t — j �' • Basin 13 Manhole 1 GM32 I I ryx '..GM33' - r rr s N Feet 0 500 1,000 Infrastructure City of Vernon Sewer System Management Plan Wastewater Capital. Improvement Plan for Basin 13 October 2009 Figure 9 CITY CLERK'S OFFICE INTEROFFICE MEMORANDUM DATE: May 18, 2010 TO: Kevin Wilson, Director of Community Services & Water FROM: Willard Yamaguchi, City Clerk RE: Resolution No. 2010-58 — A Resoluti of the City Council of the City of Vernon Approving Sewer System Management Plan (SSMP) Volume I and Appendix "O" of SSMP Volume 11 in Compliance with the Statewide General Waste Discharge Requirements for Sanitary Sewer Systems Transmitted herewith is a copy of Resolution No. 2010-58 referenced above, which was approved by City Council on May 17, 2010. Thank you. WY:dj c: Resolution No.2010-58 RECEIVE MAY 1 2 2010 CITY CLERK'S OFFICE. STAFF REPORT COMMUNITY SERVICES & WATER DEPARTMENT DATE: May 11, 2010 TO: Honorable Mayor and City Council X't��� FROM: Samuel Kevin Wilson, Director of Community Services & Water RE: Sewer System Management Plan — System Evaluation and Capacity. Assurance Plan Update The State Water Resources Control Board adopted Order No. 2006-0003 (Order) on May 2, 2006 for...Statewide General Waste Discharge Requirements for sanitary sewer systems to facilitate the development of monitoring and reporting programs. with the goal of reducing the number and volume of sewer, overflows and to provide a uniform statewide electronic reporting protocol. The Order required that the City develop a SSMP that addressed nine subsections one of which was the System Evaluation and Capacity Assurance Plan (SECAP). The City of Vernon entered into an agreement with Infrastructure Engineering. Corporation (IEC) to facilitate the development of the SSMP due to their expertise in sewer design .and planning. IEC completed the SSMP in 2009 and it was adopted under Resolution No. 10,026 on July 27, 2009. The SECAP section of the SSMP required that the City develop a schedule and capital improvement plan. The SECAP section, unlike the other eight subsections of the SSMP, allowed for a tentative plan to be in place with its adoption in July of 2009. The SECAP section is herein viewed as a living document that may be revised periodically to illustrate future changes in the City capital improvement plans and scheduling. City staff recently made changes to the planning and scheduling of the SECAP and: forwarded them to EEC. The SECAP analysis was performed utilizing a sewer hydraulic model that estimated peak dry and wet weather flows; and outlines a Wastewater Capital Improvement Program to mitigate projected deficiencies in the Existing 5-Year, 10-Year and 20-Year (Planning Horizon) time increment. As an alternative to upsizing the capacity of the sewer line the City, may opt to require a reduction in flow of an industrial waste discharger to such an extent that the existing sewer line will have sufficient capacity to meet the City's design criteriaA recent analysis by City staff has determined that in many of the reaches where upsizing the sewer main was recommended is a result of one or more of the large industrial waste dischargers currently exceeding their permitted discharge rates. Therefore; the City is proposing to require businesses that are discharging in excess of their permitted flow rate either reduce the volume of wastewater discharged to the sewer to be in compliance with their industrial waste permit or fund the cost to upsize the sewer so that sufficient capacity would exist for their flows. This will greatly reduce the need for costly capital improvement upgrades t. Moreover, these changes were incorporated by IEC in the revised SSMP Volume No. 1, and are illustrated on Page. Nos. 39 and 40; Section Nos. 8.1 (1) (2) (3) (4), and 8.3.1. In addition, Appendix "O" of the SSMP Volume No. II, "The SECAP Document," has been revised in its entirety to reflect actual results of performed sewer flow studies, measures to mitigate projected deficiencies, and alternatives to upsizing the capacity of sewer fines in order to meet the City's design criteria. It is my recommendation that the City Council approve the changes to the language in the revised SSMP Volume No. l and Appendix "O" of the SSMP Volume No. II, at the next City Council meeting. Thank you. SKW/sr Enclosures OF VFR� Mac I: e�Q COMMUNITY SERVICES & WATER DEPARTMENT OFFICE MEMORANDUM TO: Donal O'Callaghan, City Administrator � �b FROM: Samuel Kevin Wilson, Director of Community Services and Water DATE: May 11, 2010 SUBJECT: Sewer System Management Plan - System Evaluation and Capacity Assurance Plan Update The City of Vernon (City) adopted the Sewer System Management Plan (SSMP) on July 27, 2009 under, Resolution No. 10,026, in order to comply with the State Water Resources Control Board (SWRCB) Order No. 2006-0003 (Order). The Order required that the City develop a SSMP that addressed nine subsections one of which was the System Evaluation and Capacity Assurance Plan (SECAP). The SECAP section of the SSMP required that the City develop a schedule and capital improvement plan. The SECAP section, unlike the other eight subsections of the SSMP, allowed for a tentative plan to be in place with its adoption in July of 2009. The SECAP section is herein viewed as a living document that may be revised periodically to illustrate future changes in the City's capital improvement plans and scheduling. City staff recently made changes to the planning and scheduling of the SECAP. These changes were incorporated by Infrastructure Engineering Corporation in the revised SSMP Volume No. 1, and are illustrated on Page Nos. 39 and 40; Section Nos. 8.1 (1) (2) (3) (4), and 8.3.1. In addition, Appendix "O" of SSMP Volume No. II, "The SECAP Document, has been revised in its entirety to reflect actual results of performed sewer flow studies, measures tomitigate projected deficiencies, and alternatives to upsizing the capacity of sewer lines in order to meet the City's design criteria. A recent analysis by City staff has determined that in many of the reaches where.upsizing the sewer .main was recommended is a result of one or more of the large industrial waste dischargers currently exceeding their permitted discharge rates. Therefore, the. City is proposing to require businesses that are discharging in excess of their permitted flow rate either reduce the volume of wastewater discharged to the sewer to be in compliance with their industrial waste permit or fund the cost to 'upsize the sewer so that sufficient capacity would exist for their flows. This will greatly reduce the need for costly capital improvement upgrades. e a MAY 1' 2 2010 Y: ►a'.ss - _ C:\Doe ments and Serdngs\kwilsonU.o SettingsWemporary Intemet Files\ContenWudo I &WAYANRUAmendmentto SECAP 2010 doc5l.doc Wilson, Kevin From: Candice K. Lee [CLee@rwglaw.com] Sent: Wednesday, May 12, 2010 11:58 AM To: Wilson, Kevin; Gena Stinnett Cc: Katrina Gonzales; Muro, Evangelina Subject: RE: SSMP Amendment Actually, I just reviewed it and the report looks fine. -----Original Message ----- From: Wilson, Kevin[mailto:KWilson@ci.vernon.ca.us] Sent: Wednesday, May 12, 2010 11:55 AM To: Gena Stinnett Cc: Candice K. Lee; Katrina Gonzales; Muro, Evangelina Subject: RE: SSMP Amendment I am sorry I meant to send the staff report to Candice, instead of Katrina, thank you for forwarding it to her for her review. We are in no hurry for this item, so why don't we just plan on having it placed on the council agenda for May, 24, 2010. From: Gena Stinnett [mailto:gstinnett@rwglaw.com] Sent: Wednesday, May 12, 2010 11:12 AM To: Wilson, Kevin Cc: Candice K. Lee; Katrina Gonzales; Muro, Evangelina Subject: FW: SSMP Amendment Importance: High Hi Kevin: Candice Lee will take a look at the staff report. We reviewed the resolution last week, and gave our comments to Eva. By separate email, I've asked Eva to send the revised resolution to you. Best regards, =Gena= -----Original Message ----- From: Wilson, Kevin[mailto:KWilson@ci.vernon.ca.us] Sent: Wednesday, May 12, 2010 7:17 AM To: Katrina Gonzales Subject: FW: SSMP Amendment Katrina attached is an updated staff report, can you please review and give your approval for this item to be placed on the agenda. I am not sure if your office was going to prepare a resolution approving the changes to the SSMP or if it was going to be handled through a minute order or if even needs. to be approved by council. Since it sets forth a capital improvement program I believe it should be approved by council. NOTICE: This communication may contain privileged or other confidential information. If you are not the intended recipient of this communication, or an employee or agent responsible for delivering this communication to the intended recipient, please advise the sender by reply email and immediately delete the message and any attachments without copying or disclosing the contents. Thank you. 2 � o 1PI� S fl�C:fl11C itgifif of itl t c,iip; c',iior 'City of Neuron Sewer System Management .tan Volume FINAL Prepared for: City of Vernon 4305 Santa Fe Ave. Vernon, CA 90058 March 2010 Prepared by: Infrastructure Engineering Corporation 27247 Madison Ave., Suite 111 Temecula, CA 92590 2724.7 Madison Ave., Suite 11 1, Temecula, CA, 92590 T 951,296,035.5 F 951.296,2456 www.iecorporation.com TABLE OF CONTENTS ABBREVIATIONS /ACRONYMS..............................................................................................3 EXECUTIVESUMMARY.........................................................................................................4 CHAPTER 1. PROHIBITIONS AND PROVISIONS.....................................................................5 1.1 PROHIBITIONS................................................................................................................. 5 1.2 PROVISIONS....................................................................................................: CHAPTER 2. GOALS AND ORGANIZATIONAL STRUCTURE .................................................. 10 2.1 GOALS ................:...........................................................................................................10 2.2 ORGANIZATIONAL STRUCTURE................................................................................. 10 2.2.1 Compliance Summa.......................................................................................... 10 2.2.2 Compliance Documents..................................................................................................... 11 2.2.3 Document Descriptions..................................................................................................... 11 2.2.3.1 Community Services and Health Department Organization Charts (Appendix B) ............ 11 2.2.3.2 Telephone Directory (Appendix C).................................................................................. 13 2.2.3.3 City of Vernon Fire Department Standard Operating Procedures (Appendix D) .............. 13 2.2.3.4 Sanitary Sewer Overflow Response Plan (Appendix E).................................................... 13 CHAPTER 3: OVERFLOW EMERGENCY RESPONSE PLAN....................................................15 3.1 COMPLIANCE SUMMARY............................................................................................. 16 3.2 COMPLIANCE DOCUMENTS......................................................................................... 17 3.3 DOCUMENT DESCRIPTION........................................................................................... 18 3.3.1 Sanitary Seaver Overflow Response Plan (Appendix E).................................................... 18 CHAPTER 4: DESIGN AND PERFORMANCE PROVISIONS..................................................... 21 4.1 COMPLIANCE SUMMARY............................................................................................. 21 4.2 COMPLIANCE DOCUMENTS......................................................................................... 22 4.3 DOCUMENT DEsCRIPTIoNs......................................................................................... 22 4.3.1 Portions of the Municipal Code of the City of Vernon (Appendix F)................................. 22 4.3.2 City of Vernon Standard Drawings- (Appendix G)......................................................... 22 4.3.3 Los Angeles County Deartment of Public Works Standard Drawings (Appendix H)..... 22 4.3.4 Standard Specifications for Public Works Construction(Greenbook)................................. 23 CHAPTER 5. LEGAL AUTHORITY........................................................................................24 5.1 COMPLIANCE SUMMARY............................................................................................. 24 5.2 COMPLIANCE DOCUMENTs......................................................................................... 26 5.3 DOCUMENT DESCRIPTIONS......................................................................................... 26 5.3.1 Portions of the Municipal Code of the City of Vernon (Appendix F)................................ 26 5.3.2 City of Vernon Standard Drawings (Appendix G).......................................................... 27 5.3.3 L os Angeles County Department of Public Works Standard Drawings (Appendix H)..... 27 5.3.4 LACSD Industrial IVaste Discharge Permit Requirements (Appendix I) ........................ 27 5.3.5 L 4CSD Wastewater Ordinance (Appendix J)................................................................ 28 5.3.6 Standard Specifications for Public Works Construction(Greenbook)................................. 28 CHAPTER 6. OPERATION AND MAINTENANCE PROGRAM.................................................29 6.1 COMPLIANCE SUMMARY............................................................................................. 29 6.2 COMPLIANCE DOCUMENTS......................................................................................... 31 6.3 DOCUMENT DESCRIPTIONS .......................................... ............... ... .............. I.............. 31 6.3.1 Map and Table of Existing Wastewater Facilities, (Appendix K).................................... 31 6.3.2 Map of Sewer System Areas of Interest (Appendix L)...................................................... 32 i21 City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 2 of 46 CHAPTER 7. FATS, OILS AND GREASE (FOG) CONTROL PROGRAM...................................33 7.1 COMPLIANCE SUMMARY............................................................................................. 33 7.2 COMPLIANCE DOCUMENTS......................................................................................... 35 7.3 DOCUMENT DESCRIPTION.......................................................................................... 36 7.3.1 Portions of the Municipal Code of the City of Vernon (Appendix F)................................ 36 7.3.2 City of Vernon Standard Drawings (Appendix G).......................................................... 36 7.3.3 Los Angeles County Department of Public Works Standard Drawings (Appendix H)..... 36 7.3.4 LACSD Wastewater Ordinance (Appendix J)................................................................ 37 7.3.5 Map and List of Sewer Areas of Interest (Appendix 4................................................... 37 7.3.6 Independent Collection/Disposal Service Vendor List (Appendix M) ............................... 37. 7.3.7 Public Outreach for FOG Control (Appendix N)............................................................ 37 7.3.8 Standard Specifications for Public Works Construction(Greenbook)................................. 38 CHAPTER 8. SYSTEM EVALUATION AND CAPACITY ASSURANCE PLAN...............................39 8.1 COMPLIANCE SUMMARY............................................................................................. 39 8.2 COMPLIANCE DOCUMENTS......................................................................................... 40 8.3 DOCUMENTDESCxTmoNs.....................................................,...................................40 8.3.1 2008 Sewer System Hydraulic Analysis (Appendix O).................................................... 40 CHAPTER 9. MONITORING, MEASUREMENT, AND PROGRAM MODIFICATIONS ................42 9.1 COMPLIANCE SUMMARY............................................................................................. 42 9.2 COMPLIANCE DOCUMENTS................................................................................:........ 44 9.3 DOCUMENT DESCRIPTIONS......................................................................................... 44 9.3.1 Map and List of SeverAreas of Interest (Appendix 4................................................... 44 CHAPTER 10. SSMP PROGRAM AUDITS..............................................................................45 10.1 COMPLIANCE SUMMARY............................................................................................. 45 10.2 COMPLIANCE DOCUMENTS......................................................................................... 45 10.3 DOCUMENT DEsCRIPTToNs......................................................................................... 45 CHAPTER 11. COMMUNICATION PROGRAM........................................................................46 11.1 COMPLIANCE SUMMARY............................................................................................. 46 11.2 COMPLIANCE DOCUMENTS......................................................................................... 46 11.3 DOCUMENT DESCRIPTIONS......................................................................................... 46 NOTE: APPENDICES ARE LOCATED IN VOLUME II OF THIS PLAN. . City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 3 of 46 ABBREVIATIONS /ACRONYMS BMP Best Management Practice CMMS Computerized Maintenance Management System CMOM Capacity, Management, Operations and Maintenance CPI Capital Improvement Program CWEA California Water Environment Association -•': Environmental Compliance Services EDU Equivalent Dwelling Unit FOG Fats, Oils, Grease GIS Geographical Information System IEC Infrastructure Engineering Corporation I/I Inflow / Infiltration LACSD Sanitation Districts of Los Angeles County MRP Monitoring and Reporting Plan NPDES National Pollution Discharge Elimination System OERP Overflow Emergency Response Plan O&M Operation and Maintenance PM Preventative Program PVC Polyvinyl Chloride REl&S Regional Assets and Services Department SSMP Sewer System Management Plan SSO Sanitary Sewer Overflows SWRCI3 State of California Water Resources Control Board WDR Waste Discharge Requirements City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 4 of 46 EXECUTIVE SUMMARY On May 2, 2006, after several years of public discussion and planning, the State Water Resources Control Board (SWRCB) adopted Order No. 2006-0003, a General Waste Discharge Requirement (WDR) for all publicly owned sanitary sewer collection systems in California with more than one (1) mile of sewer pipe. The goal of Order No. 2006-0003 is to provide a consistent statewide approach for reducing Sanitary Sewer Overflows (SSOs) by requiring that: 1. In the event of an SSO, all feasible steps be taken to control the released volume and prevent untreated wastewater from entering storm drains, creeks, etc. 2. If an SSO occurs, it must be. reported to the SWRCB using an online reporting system developed by the SWRCB. 3. All publicly owned collection system agencies with more than 1 mile of sewer pipe in the State must develop a Sewer System Management Plan (SSMP). This critical component of Order No. 2006-0003 is the development of a Sewer System Management Plan (SSMP). There are eleven specific "milestones" identified in the schedule that relate to the elements required in the WDR. The eleven milestones, and the applicable schedule for the City, include: 1. SSMP Development Plan and Schedule (November 2, 2007) 2. Goals and Organization Structure (November 2, 2007) 3. Legal Authority (May 2, 2009) 4. Operation and Maintenance Program (May 2, 2009) 5. Design and Performance Standards (August 2, 2009) 6. Overflow Emergency Response Program (May 2., 2009) 7. Fats, Oils and Grease Control Program (May 2, 2009) - 8. System Evaluation and Capacity Assurance Plan (August 2, 2009) 9. Monitoring, Measurement, and Program Modifications (August 2, 2009) 10. SSMP Program Audits (August 2, 2009) 11. Communication Program (August 2, 2009) 12. Final SSMP, incorporating all the SSMP elements. (August 2, 2009) City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 5 of 46 CHAPTER 1. PROHIBITIONS AND PROVISIONS The State Water Resources Control Board (SWRCB) Order No. 2006-0003 mandates that the City of Vernon (City) comply with the following discharge prohibitions and provisions. 1.1 PROHIBMONS To meet the provisions contained in Division 7 of the California Water Code and regulations Amp Led there under, the City is required to comply with the following prohibitions: o Any SSO that results in a discharge of untreated or partially treated wastewater to waters of the United States is prohibited; and, o Any SSO that results in a'discharge of untreated or partially treated wastewater that creates a nuisance as defined in California Water Code Section 13050(m) is prohibited. In any enforcement action, the Regional Board will consider the efforts of the City to contain, control, and clean up sewage spills from its collection system in accordance with Section 13327 of the California Water Code. The City will make every effort to contain sewage spilled from its. collection systems and to prevent the sewage from entering storm drains and surface water bodies. The City will also make every effort to prevent sewage from discharging from storm drains into . flood control channels and open ditches by blocking the storm drainage system and by removing the sewage from the storm drains. The use of the storm drain pipe system to contain the sewage by blocking the drain pipes, and recovering and cleaning up the spilled sewage, in order to prevent the sewage from being discharged to a surface water body is not a violation of the prohibitions listed above. 1.2 PROVISIONS As stated in Order No. 2006-0003, the City must meet the following fifteen (15) provisions: 1. The City must comply with all conditions of Order No. 2006-0003. Any noncompliance with Order No. 2006-0003 constitutes a violation of the California Water Code and is grounds for enforcement action. 2. It is the intent of the State Water Board that sanitary sewer systems be regulated in a manner consistent with the general WDRs. Nothing in the general WDRs shall be: a. Interpreted or applied in a manner inconsistent with the Federal Clean Water Act, or supersede a more specific or more stringent state or federal requirement in an existing permit, regulation, or administrative/judicial order or Consent Decree; b. Interpreted or applied to authorize an SSO that is illegal under either the Clean Water Act, an applicable Basin Plan prohibition or water quality standard, or the California Water Code; City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 6 of 46 c. Interpreted or applied to prohibit a Regional Water Board from issuing an individual NPDES permit or WDR, superseding this general WDR, for a sanitary sewer system, authorized under the Clean Water Actor California Water Code; or d. Interpreted or applied to supersede any more specific or more stringent WDRs or enforcement order issues by a Regional Water Board. 3. The City shall take all feasible steps to elitniriate SSOs. In the event that an SSO does occur, the City shall take all feasible steps to contain and mitigate the impacts of an SSO. 4. In the event of an SSO, the City shall take all feasible steps to prevent untreated or partially. treated wastewater from discharging from storm drains into flood control channels or waters of the United States by blocking the storm drainage system and by removing the wastewater from the storm drains. 5. All SSOs must be reported in accordance with Section G of the general WDRs. 6. In any enforcement action, the State and/or Regional Water Boards will consider the appropriate factors under the duly adopted State Water Board Enforcement Policy. And, consistent with the Enforcement Policy, the State and/or Regional Water Boards must consider the City's efforts to contain, control, and mitigate SSOs when considering` the California Water Code Section 13327 factors. In assessing these factors, the State and/or Regional Water Boards will also consider whether: a. The City has complied with the requirements of Order No. 2006-0003, including requirements for reporting, developing and implementing a SSMP; b. The City can identify, the cause or likely cause of the discharge event; c. There were no feasible alternatives to the discharge, such as temporary storage or retention of untreated wastewater, reduction of inflow and infiltration, use of adequate backup equipment, collecting and hauling. of untreated wastewater to a treatment facility, or an increase in the capacity of the system as necessary to contain the design storm event identified in the SSMP. It is inappropriate to consider the lack of feasible alternatives if the City does not implement a periodic or continuing process to identify and correct problems. d. The discharge was exceptional, unintentional, temporary, and caused by factors beyond the reasonable control of the City; e. The 'discharge could have been prevented by the exercise of reasonable control described in a certified SSMP for: i. Proper management, operation and maintenance; City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 7 of 46 ii. Adequate treatment facilities, sanitary sewer system facilities, and/or components with an appropriate design capacity, to reasonably prevent SSOs (e.g., adequately enlarging treatment or collection facilities to accommodate growth, infiltration and inflow (I/I), etc.); iii. Preventative maintenance (including cleaning and fats, oils, and grease (FOG) control); _ iv. Installation of adequate backup equipment; and V. Inflow and infiltration prevention and control to .the extent practicable. f. The sanitary sewer system design capacity is appropriate to reasonably prevent SSOs. g. The City took all reasonable steps to stop and mitigate the impact of the discharge as soon as possible. 7. When a sanitary sewer overflow occurs, the City shall take all feasible steps and necessary remedial actions to 1) control or limit the volume of untreated or partially treated wastewater discharged, 2) terminate the discharge, and 3) recover as much of the wastewater discharged as possible for proper disposal, including any wash down water. The City shall implement all remedial actions to the extent they may be applicable to the discharge and not inconsistent with an emergency response plan, including the following: a. Interception and rerouting of untreated or partially treated wastewater flows around the wastewater line failure; b. Vacuum truck recovery of sanitary sewer overflows and wash down water; c. Cleanup of debris at the overflow site; d. System modifications to prevent another SSO at the same location; e. Adequate sampling to determine the nature and impact of the release; and f. Adequate public notification to protect the public from exposure to the SSO. 8. The City shall properly manage, operate, and maintain all parts of the sanitary sewer system owned or operated by the City, and shall ensure that the system operators (including employees, contractors, or other agents) are adequately trained and possess adequate knowledge, skills, and abilities. 9. The City shall allocate adequate resources for the operation, maintenance, and repair of its sanitary sewer system, by establishing a proper rate structure, accounting mechanisms, and auditing procedures to ensure an adequate measure of revenues and expenditures. These procedures must be in compliance with applicable laws and regulations and comply with generally acceptable accounting practices. 10. The City shall provide adequate capacity to convey base flows and peak flows, including flows related to wet weather events. Capacity shall meet or exceed the design criteria as defined in the City's System Evaluation and Capacity Assurance Plan for all parts of the sanitary sewer system owned or operated by the City. 11. The City shall develop and implement a written Sewer System Management Plan (SSMP) and make it available to the State and/or Regional Water Board upon request. A copy of this document must be publicly available at the City's office and/or available on the internet. This SSMP must be approved by the City's Board of Directors at a public meeting. 11 In accordance with the California Business and Professions Code sections 6735, 7835, and 7835.1, all engineering and geologic evaluations and judgments shall be performed by or under the direction of registered professionals competent and proficient in the fields pertinent to the required activities. Specific elements of the SSMP that require professional evaluation and judgments shall be prepared by or under the direction of appropriately qualified professionals, and shall bear the professional(s)' signature and stamp. 13. The mandatory elements of the SSMP are specified below, and must be approved by the deadlines listed in Order No. 2006-0003. a. Goal b. Organization c. Legal Authority d. Operation and Maintenance Program e. Design and Performance Provisions f. Overflow Emergency Response Plan g. FOG Control Program h. System Evaluation and Capacity Assurance Plan I. Monitoring, Measurement, and Program Modifications City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 9 of 46 j. SSMP Program Audits k. Communication Program 14. Both the SSMP and the City's program to implement the SSMP must be certified by the City to be in compliance with the requirements set forth above and must be presented to the City's Board of Directors for approval at a public meeting. The City shall certify that the SSMP, and subparts thereof, are in compliance with the general WDRs within the time flames identified in the time schedule provided in subsection D.15, below. In order to complete this certification, The City's authorized representative must complete the certification portion in the Online SSO Database Questionnaire by checking the appropriate milestone box, printing and signing the automated form, and sending the form to: State Water Resources Control Board Division of Water Quality Attn: SSO Program Manager P.O. Box 100 Sacramento, CA 95812 The SSMP must be updated every five (5) years, and must include any significant program changes. Re -certification by the Board of Directors of The City is required in accordance with D.14 when significant updates to the SSMP are made. To complete the re -certification process, The City shall enter the data in the Online SSO Database and mail the form to the State Water Board, as described above. 15. The City shall comply with these requirements according to the legislated schedule. This time schedule does not supersede existing requirements or time schedules associated with other permits or regulatory requirements. iv City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 10 of 46 CHAPTER 2. GOALS AND ORGANIZATIONAL STRUCTURE The City's Goals and Organization Structure addresses those mandatory SSMP provisions outlined in Section D, 13 (i) Goals and (ii) Organization of SWRCB Order No. 2006-0003. 2.1 GOALS The goal of this SSMP is to provide a plan and schedule to properly manage, operate, and maintain all parts of the City's sanitary sewer collection system, in order to reduce and prevent Sanitary Sewer Overflows (SSO's), as well as mitigate any SSO's that do occur. Accordingly, the SSMP will satisfy the requirements of SWRCB Order No. 2006-0003. This Order is attached as Appendix A. The following specific performance indicator goals have also been identified: o Inspect 33% of all Interceptors annually; o Clean 50% of all gravity mains annually; o Conduct a CCTV video inspection of all Fats, Oils and Grease (FOG) hot spots and areas of interest, as identified in Appendix L, every five years; o Develop standard drawings for Sand and Grease Interceptors. 2.2 ORGANIZ,4T70N, L STRUCTURE The City's Organization Structure encompasses the following components: (1) The name of the responsible or authorized representative for the City, as described in Section J of SWRCB Order No. 2006-0003; (2) The names and telephone numbers for management, administrative and maintenance positions responsible for implementing specific measures in the SSMP, including clearly identifiable lines of authority; and (3) The chain of communication, from notification to reporting of SSO's, which identifies the person responsible for reporting SSO's to the State and Regional Water Boards, and other applicable agencies. 2.2. 1 Compliance Summary The City maintains a Goals and Organization Structure which meets the requirements of Section D, 13 (i) Goals and (ii) Organization of SWRCB Order No. 2006-0003: (1) Scott Rigg, the Public Works and Water Superintendent, is the authorized representative for the City, as described in Section J of SWRCB Order No. 2006-2003; ki City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 11 of 46 (2) The names and lines of authority for management, administrative and maintenance positions responsible for implementing specific measures in the SSMP are presented in the City's Community Services Department and Health Department Organi.Zational Charts, as shown in Appendix B. Phone numbers for these positions are listed in the City's Telephone Directory, attached as Appendix Q and (3) As the primary first responders, the Fire Department will respond to a potential sanitary sewer overflow (SSO) site, and will enlist the assistance of the Community Service Crew. Should the SSO involve hazardous material, the Fire Department will implement the necessary Standard Operating Procedures (SOP) for the handling of hazardous materials, attached as Appendix D. The Fire Department SOP includes the chain of communication, from notification to reporting of a hazardous material SSO, including the person responsible for reporting to all appropriate agencies. If there is no hazardous material involved, the Community Services Crew will proceed with containment, clean-up, and restoration, as per the Sanitary Seaver Overflow Response Plan for Community Services, attached as Appendix E. This contains the chain of communication, from notification to reporting of non -hazardous material SSO's, including the person responsible for reporting SSO's to the State and Regional Water Boards. 2.2.2 Compliance Documents The following documents, attached as appendices, support the City's Goals and Organization Structure, thereby allowing the City to comply with the Goals and Organization Structure of the Statewide Waste Discharge Requirement (WDR): o Community Services and Health Department Organizational Charts, Appendix B. o Telephone Directory, Appendix C. o City of Vernon Fire Department Standard Operating Procedures, Appendix D. o Sanitary Sewer Overflow Response Plan, Appendix E. 2.2.3 Document Descriptions A description for each compliance document listed above is described below: 2.2.3.1 Community Services and Health Department Organization Charts (�AMendix B,) The Community Services Department and Health Department Organizational Charts include the names and lines of authority for management, administrative and maintenance positions responsible for implementing specific measures in the SSMP, excluding hazardous material incidents. A summary for key positions, including the personnel responsible for responding to and reporting non -hazardous material SSO's, is presented below: City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 12 of 46 o Director of Community Services and Water - Establishes policy, plans strategy, leads staff, allocates resources, delegates responsibility, authorizes outside contractors to perform services, and may serve as public information officer. o Deputy Director of Community Services — Oversees preparation of wastewater collection system planning documents; manages capital improvement delivery system; oversees documentation new and rehabilitated assets; oversees development and implementation of SSMP; provides information updates to City Council; and arranges for emergency meetings if necessary. o Public Works and Water Superintendent— Is the authorized representative for the City, as described in Section J of SWRCB Order No. 2006-2003. Accordingly, oversees the SWRCB On -Line Reporting, as well the posting of any necessary public health warnings; manages field operations and maintenance activities, provides relevant information to agency management, prepares and implements contingency plans. o Environmental Specialist of the Health Department - Conducts and logs hazardous material inspections, which may include properties with privately owned Interceptors. o Project Engineer— Prepares wastewater collection system planning documents; documents new and rehabilitated assets; and coordinates development and implementation of SSMP. o Fire Department - As per their Standard Operating Procedures (SOP), the Fire Department will determine if the reported SSO includes a hazardous material, and if so, they will implement their SOP appropriately. The Fire Department also oversees reporting of the SSO to all appropriate agencies, excluding the SWRCB On -Line Reporting. o Foreman (or Senior Utilityman on Community Services Crew) - As leader of the Community Services Department Crew, notified by the Non -Emergency Police Dispatcher when an SSO is reported. If the Fire Department determines that no hazardous material is present, he oversees the SSO response. Notifies all other members of the Community Services Department Crew to assist in the SSO response; assesses the SSO and assigns the Stand -By Crew job duties in order to eliminate the overflow. o Udhtyman — Member of the Community Services Department Crew. Staff preventive maintenance activities; mobilizes and responds to notification of non -hazardous material stoppages and SSO's (mobilize sewer cleaning equipment, by-pass pumping equipment, and portable generators. o Non -Emergency Police Dispatcher — Will be first notified of an SSO via the 24-Hour Non -Emergency Phone Line, contacts the City of Vernon Fire Department, Community Services Crew and the City's Health Department. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 13 of 46 2.2.3.2 Telephone Directory (Appendix C) The City's Telephone Directory includes numbers for those management, administrative and maintenance positions responsible for implementing specific measures in the SSMP. .2.2.3.3 City of Vernon Fire D fpartvlent Standard Operating Procedures (A4be� ndix D) As per their Standard Operating Procedures (SOP), the Fire Department will determine if the SSO includes a hazardous material, and if so, they will implement their SOP appropriately. The Fire Department SOP includes the chain of communication, from notification to reporting of a hazardous material SSO, including the person responsible for. reporting to applicable agencies. 2.2.3.4 Sanitary Sewer Overflow Response Plan (A radix E) The City's chain of communication for reporting non -hazardous material SSO's is described in detail in the City's Sanitary Seiner Overflow Response Plan. The purpose of the Sanitary Sewer Overflow Response Plan is to minimize the impact of SSO's to the public and the environment, in a manner which also provides for the safety of City personnel. All sanitary sewer overflows are responded to in a timely manner to expedite the necessary steps to relieve the overflow. This response plan is the guideline for the standard operating procedures in the event of a non- hazardous material SSO, including relieving the sewage blockage and spill containment. The response plan is reviewed periodically to ensure that all corrective measures are being taken. All SSO's are reported as soon as: (1) the City has knowledge of the discharge, (2) reporting is possible, and (3) reporting can be provided without substantially impeding cleanup or other emergency measures. For any discharges of sewage that result in a discharge to a drainage channel or a surface water, the Fire Department shall, as soon as possible but not later than two (2) hours after becoming aware of the discharge, notify the Vernon Health & Environmental Control Department, State Office of Emergency Services (for discharges of 1,000 gallons or more of sewage), Los Angeles County Health Department (for discharges that enter L.A. River), Long Beach City Health Department (for significant spills into L.A. River that may affect City of Long Beach) and the Los Angeles Regional Water Quality Control Board. Notification to the Los Angeles Regional Water Quality Control Board should be followed -up with a fax or email, and should also specify that the State Office of Emergency Services, Los Angeles County Health Department and Long Beach. Health Department have already been notified. In the event that any sewage is discharged into a Los Angeles County Storm Drain, the Fire Department shall also notify Los Angeles County Public Works as soon as possible but not later than two (2) hours after becoming aware of the discharge. For any sewage discharges that are identified by the Community services Crew as originating from the Los Angeles County Sanitation District sewage line, the Fire Department shall notify the Los Angeles County Sanitation District. 41 City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 14 of 46 The "Reporting and Notification" section of the Sanitary Sewer Overflow Response Plan identifies the Public Works and Water Superintendent as the responsible or authorized representative for the City, as described in Section J of SWRCB Order No. 2006-0003, and lists his name and contact information Accordingly, he will oversee the SWRCB On -Line Reporting. Initial reporting of all Category 1 SSO's originating from City -owned infrastructure (greater than 1,000 gallons, discharge to a drainage channel or surface water, and/or discharge to a storm drain which was not fully captured) must be reported to the Online SSO System as soon as possible but no later than 3 business days after the City is made aware of the SSO. A final certified report must be completed through the Online SSO System, within 15 calendar days of the conclusion of SSO response and remediation. Initial reporting of Category 2 SSO's (all other SSO's originating from City -owned infrastructure) must be reported to the Online SSO System within 30 days after the end of the calendar month in which the SSO occurred. Minimum' information that must be contained in either the 3-day,15-day or 30-day report must include all information identified in Section D (ix), Monitoring and Reporting Program, of SWRCB Order No. 2006-0003. Specifically, the Sanitary Sewer Overflow Response Plan, contains the following sections: o Purpose o Spill Response o Containment o Emergency Traffic Control o Blockage Removal o Bypass o Reporting and Notification o Posting o Restoration 0 Documentation City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 15 of 46 CHAPTER 3: OVERFLOW EMERGENCY RESPONSE PLAN The City's Overflow Emergency Response Plan addresses those mandatory SSMP provisions outlined in Section D, 13 (vi) Overflow Emergency Response Plan of SWRCB Order No. 2006- 0003. The City has developed .and implemented an overflow emergency response plan that identifies measures to protect public health and the environment, thereby satisfying Section D, 13 (vi) Overflow Emergency Response Plan of SWRCB Order No. 2006-0003 by including: :T' Proper notification procedures so that primary responders and regulatory agencies are informed of all Sanitary Sewer Overflows (SSOs) in a timely manner; (2) A program to ensure an appropriate response to all overflows; (3) Procedures which ensure prompt notification to appropriate regulatory agencies and other potentially affected entities (e.g. health agencies, regional water boards, water suppliers, etc.) of all SSOs that potentially affect public health or reach the waters of the State in accordance with the Monitoring and Reporting Program (MRP). All SSOs shall be reported in accordance with this MRP, the California Water Code, other State Law, and other applicable regional water boards Waste Discharge Requirements (WDR's) or National Pollution Discharge Elimination System (NPDES) permit requirements. The SSMP should identify the officials who will receive immediate notification; (4) Procedures to ensure that appropriate staff and contractor personnel are aware of and follow the Emergency Response Plan and are appropriately trained; (5) Procedures to address emergency operations, such as traffic and crowd control and other necessary response activities; and (6) A program to ensure, that all reasonable steps are taken to contain and prevent the discharge of untreated and partially treated wastewater to waters of the United States and to minimize or correct any adverse impact on the environment resulting from the SSOs, including such accelerated or additional monitoring as may be necessary to determine the nature and impact of the discharge. The City's Overflow Emergency Response Plan also complies with the additional notification requirements outlined in SWRCB Order No. WQ 2008-0002-EXEC: (1) In the event of a sewage discharge that results in a discharge to a drainage channel or a surface water, the. City shall, as soon as possible, but not later than two (2) hours after becoming aware of the discharge, notify the State Office of Emergency Services, the local health officer or directors of environmental health with jurisdiction over affected water . bodies, and the Los Angeles Regional Water Quality Control Board; and (2) As soon as possible, but no later than twenty-four (24) hours after becoming aware of a discharge to a drainage channel or a surface water, the City shall submit to the Los Angeles Regional Water Quality Control Board a certification that the State Office of Emergency City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 16 of 46 Services and the local health officer or directors of environmental health with jurisdiction over the affected water bodies have been notified of the discharge. 3.1 COMPLIANCE SUMMARY The City has outlined specific measures to protect public health and the environment in their Sanitary Seaver Overflow Response Plan (Appendix E of Technical Memorandum No. 2 - Goals and Or Structure). These procedures contain a plan for responding and reporting to SSOs =s°hich includes, but is not limited to, the following: o Descriptions, responsibilities and authorities for each management, administrative and maintenance position responsible for responding to and reporting an SSO. o Procedures for receiving SSO notification and immediately notifying first responders of the SSO. o Procedures to rapidly mobilize; contain any SSO; and diagnose, report on, and relieve its 1. cause. o Procedures to provide emergency operations, such as traffic control, in the event of an SSO: o _Procedures for reporting all SSOs to the On -Line SSO Reporting System. . o Procedures to post the proper signs to warn the public of potential contamination hazards: o Procedures to restore the environment to the condition that existed before the SSO occurred. The City conducts internal training sessions to ensure familiarity with these procedures and prepare staff for an SSO event, from initial notification to SSO report documentation, including any necessary emergency activities, such as traffic control. Through these documents and programs, the City has developed and implemented an Overflow Emergency Response Plan that identifies measures to protect public health and the environment, thereby satisfying Section D,13 (vi) Overflow. Emergency Response Plan of SWRCB Order No. 2006-0003: (1) Section 2 and 7 of the City's Sanitary Sewer Overflow Response Plan outline the proper SSO response and notification procedures, thereby ensuring that primary responders and regulatory agencies are informed of all SSOs in a timely manner; (2) Section 2 of the City's Sanitary Sewer Overflow Response Plan contains a program to ensure an appropriate response to all overflows; City of Vernon Sewer System Management Plan, Volume I Final Report . March 2010 Page 17 of 46 (3) Section 7 of the City's Sanitary Sewer Overflow Response Plan outlines the procedures which ensure prompt notification to appropriate regulatory agencies and other potentially affected entities of all SSOs that potentially affect public health or reach the waters of the State in accordance with the Monitoring and Reporting Program (MRP). The Public Works and Water Superintendent is the authorized representative for the City, as described in Section J of SWRCB Order No. 2006-2003. Accordingly, he will oversee the SWRCB On -Line Reporting. The Fire Department will report the SSO to all other appropriate agencies with . the appropriate contact information in Section 7. This ensures that all regulatory agencies titre informed of all SSOs in a timely manner; (4) As per Section 11 of the City's Sanitary Sewer Overflow Response Plan , the City conducts internal training sessions to ensure familiarity with these procedures and prepare staff and contractor personnel for an SSO event, from initial notification to SSO report documentation, including any necessary emergency activities, such as, traffic control; (5) Procedures to address emergency operations, such as traffic control and other necessary response activities, are addressed in Sections 4 and 8 of the City's Sanitary Sewer Overflow. Response Plan; and (6) Sections 2, 3 and 9 of the City's Sanitary Sewer Over Response Plan ensure that all. reasonable steps are taken to contain and prevent the discharge of untreated and partially treated wastewater to waters of the United States and to minimize or correct any adverse impact on the environment resulting from the SSOs. Provisions of the City's Overflow Emergency Response Plan, that comply with SWRCB Order No. WQ 2008-0002-EXEC, are contained in Section 7 of the City's Sanitary Sewer Overflow Response Plan: (1) In the event of a sewage discharge that results in a discharge to a drainage channel or a surface water, the Fire Department shall, as soon as possible, but not later than two (2) hours after becoming aware of the discharge, notify the Vernon Health & Environmental Control Department, State Office of Emergency Services, Los Angeles County Health Department (for discharges that enter L.A. River), Long Beach City Health Department (for significant spills into L.A. River that may affect City of Long Beach) and the Los Angeles Regional Water Quality Control Board; and (2) Notification to the Los Angeles Regional Water Quality. Control Board would be followed- UP within 24 hours by phone, fax or email, and would also specify that the State Office of Emergency Services, Los Angeles County Health Department and Long Beach Health Department have already been notified. 3.2 COMPLIANCE DOCUMENTS The following documents allow the City to comply with the overflow and emergency response plan requirements of the WDR, and are attached as appendices. lid o Sanitary Sewer Overflow Response Plan, City of Vernon, Last Updated August 2008, Appendix E. 3.3 DOCUMENT DESCRimoN A description for, each compliance document listed above is described below: 3.3.1 Sanitary Seaver Overflow Resbonse Plan (Aoendix E) The City of Vernon maintains a plan for responding and reporting to SSOs in their Sanitary Seaver Overflow Response Plan. The purpose of these procedures is to minimize the impact of SSO's to the public and the environment. This response plan is a guideline for the standard operating procedures in the event of a SSO, and is reviewed periodically to ensure that all corrective measures are being taken. The plan includes the following contents: o Spill Response o Containment o Emergency Traffic Control o Blockage Removal o Bypass o Reporting and Notification o Posting o Restoration o Documentation o Training Specifically, the Sanitary Seaver.Overfloav Response Plan addresses the following: Spill Response Includes the procedures for receiving SSO notification and immediately notifying first responders of the SSO. Once receiving notification from the Fire Department, the City's Community Services Crew will respond to the spill site with the proper spill response and safety equipment. After normal business hours, the City's Community Services Stand-by Crew will respond. The foreman, or senior crew member, will assess the problem and assign the Crew job duties in order to eliminate the overflow if originating from a City -owned facility. If the overflow is originating from private infrastructure, the foremen or senior crew member will instruct the appropriate private wastewater City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 19 of 46 generator to eliminate the overflow. The foremen or senior crew member will notify the Public Works and Water Superintendent as soon as reasonably, possible but not to exceed 48 hours whether the problem occurs during, or after, normal business hours. Containment Includes the procedures to contain the SSO. The Community Service Crew will make every effort o keep the SSO in as small an area as possible, and in the streets away from storm drains. Emergency Traffic Control Includes the procedures to provide emergency traffic control activities in the event of an SSO. The City's Community Service Crew or Fire Department will utilize assistance from the City's Police. Department (Non -Emergency) in the event that the spill is located in a high traffic area. Blockage Removal Includes the procedures to efficiently remove sewer blockages. Specifically, the foreman, or senior Crew member, will assess the problem and assign the Crew job duties in order to remove the blockage from City -owned infrastructure. V-11 i Includes the procedures to rapidly contain a SSO in the event of a potential blockage that is not relieved within the first few attempts and is projected to exceed the capacity of the temporary flow containment area. In such an instance, the foreman, or senior crew member, will locate the nearest downstream manhole that can accept the additional flow, and set up an appropriately sized pump. The pump discharge hose should be secured or placed far enough into the receiving manhole that it will not come out during pumping. The pump and pump hose should be protected from traffic by barricades: Reporting and Notification Includes the procedures for reporting SSOs and notifying the proper authorities, with appropriate contact information, as wellas the list of agencies, to be notified in the event of any SSO. The Public Works and Water Superintendent, is the authorized representative for the City, as described in Section J of SWRCB Order No. 2006-2003. Accordingly, he will oversee the SWRCB On -Line Reporting. The Fire Department will report the SSO to all other appropriate agencies with the appropriate contact information in Section 7. This ensures that all regulatory agencies are informed of all SSOs in a timely manner. Posting Includes the procedures .to post proper signs to warn the public of potential contamination hazards. Posting of contamination signs will be done in all cases whether there is standing water or the City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 20 of 46 ground is saturated. Signs will be placed in locations with high visibility so they can be seen from all routes that the public might take to enter an area. Restrictions will remain posted for a period determined by the Public Works and Water Superintendent, in consultation with the Vernon Health & Environmental Control Department. Restoration Emphasizes that every effort will be made to restore the environment to the condition that existed }_.fore the SSO occurred, and outlines corresponding procedures. Documentation Includes the City's documentation requirements in the event of an SSO, including: the beginning and ending time of the SSO spill, location, and cause; whether the SSO reached surface waters or a storm drain; the total gallons of SSO spilled and recovered; any damage that was caused and any repairs that were made because of the SSO; photos of the affected area; and all notifications. Training The City has been and continues to conduct internal training and/or a field practicum no less than semi-annually in order to prepare staff for an SSO event, from initial notification to SSO report documentation, including any necessary emergency activities such as traffic control. CHAPTER 4: DESIGN AND PERFORMANCE PROVISIONS The City's Design and Performance Provisions addresses those mandatory SSMP provisions outlined in Section D, 13 (v) Design and Performance Provisions of SWRCB Order No. 2006- 0003. The City's Design and Performance Provisions encompass the following components: (1) Design and construction standards and specifications for the installation of new sanitary sewer systems, pump stations and other appurtenances; and for the rehabilitation and repair of existing sanitary sewer systems; and (2) Procedures and standards for inspecting and testing the installation of new sewers, pumps and other appurtenances and for rehabilitation and repair projects. 4.1 COMPLIANCE SUMMARY Per Section 21.3.1 of the City of Vernon Municipal Code, the Director of Community Services has charge and control of all sewers in the City. Accordingly, as part of Community Services, the Engineering Department requires that all new sanitary sewer systems, as well as the rehabilitation and repair of existing sewer facilities, be designed and constructed in accordance with the Standard Specifications for Public Works Construction (Greenbook, published by Public Works Standards, Inc.. Specifically, the City of Vernon Standard Drawings reference the Greenbook, as does the standard contract language the City utilizes in all such construction projects. Procedures and standards for inspecting and testing the installation of new sewers and other appurtenances, and for rehabilitation and repair projects,. are maintained by the Department of Community Services and Water. Specifically, all City -owned sewer facilities are left uncovered until the City Engineer has completed inspection and testing .in accordance with the Greenbook. The City maintains Design and Performance Provisions which meet the requirements of Section D, 13 (v) Design and Performance Provisions of SWRCB Order No: 2006-0003: (1) The City utilizes the Standard Specifications forPublic Works Construction (Greenbook) for design and construction standards and specifications for the installation of new sanitary sewer systems, pumps and other appurtenances, and for the rehabilitation and repair of existing sanitary sewer infrastructure. The City of Vernon Standard Drawings reference the Greenbook, as does the standard contract language the City utilizes in all relevant construction projects; and (2) The Department of Community Services and Water utilizes procedures and standards for inspecting and testing the installation of new sewers, pumps and other appurtenances and for rehabilitation and repair projects; which are in accordance with the Greenbook. All City - owned sewer facilities are left uncovered until the City Inspector completes the inspection. 4 City of Vernon Sewer System Management Plan, Volume I Fugal Report March 2010 Page 22 of 46 4.2 COMPLIANCE DOCUMENTS The following documents are attached as appendices in order support the City's Design and Performance Provisions, thereby allowing the City to comply with the Design and Performance Provisions requirements of the WDR: o Portions of the Municipal Code of the City of Vernon, City of Vernon, Appendix F. o City of Vernon Standard Drawings, Department of Engineering, City of Vernon, Appendix G. o Los An County Department of Public Works Standard Drawings - Countyof Los Angeles, Appendix H. The following document is readily available to the general public, and has therefore not been attached as appendix: o 'Standard Specifications forPublic Works Construction (Greenbook), Public Works Standards, Inc., 2006. 4.3 DOCUMENT DESCRIPTIONS A description for each compliance document listed above is described below: 4.3.1 Portions of the Municipal Code o fthe City of Vernon (Appendix F) Adopted by the City, Section 21.3.1 of the City of Vernon Municipal Code gives the Director of Community Services charge and control of all sewers in the City. 4.3.2 City of Vernon Standard Drawings- (Ape endix G) These drawings reference the Greenbook, and include the City's standard drawings for: o Standard Trench Paving o Typical Trench Paving Section for Sewer Lateral o Standard Manhole "D" o Dura Plate 100 Manhole Liner 4.3.3 Los Angeles County Department of Public Works Standard Drawings A4tyndix H) These drawings include the City's sewer system standard drawings for: o Grease Interceptor City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 23 of 46 o Rain Water Diversion System o Sampling Box o Sand and Grease Interceptor (Clarifier) 4.3.4 Standard S�ecifcations for Public Works Construction (Greenbook The Greenbook, formally known as the Standard Specifications forPublic forks Construction, is widely used by cities and counties from Santa Barbara County to San Diego County. Publication of the Greenbook is under the oversight of Public Works Standards, Inc, a nonprofit mutual benefit corporation. It contains 'all the latest standards and recommendations that have been researched and approved by a 25-member committee, with representatives from the American Public Works Association, the Associated General Contractors of California, the Engineering .Contractors Association, and the Southern California Contractors Association. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 24 of 46 CHAPTER 5. LEGAL AUTHORITY The City's Legal Authority addresses those mandatory SSMP provisions outlined in Section D, 13 (iii) Legal Authority of SWRCB Order No. 2006-0003. The City will demonstrate, through sanitary sewer system use ordinances, service agreements, or other legally binding procedures, that is possesses the necessary legal authority to: .1) Prevent illicit discharges into its sanitary sewer system (examples may. include I/I, stormwater, chemical dumping, unauthorized debris and cut roots, etc.); (2) Require that sewers and connections be properly designed and constructed; (3) Ensure access for maintenance, inspection, or repairs for portions of the lateral owned by the City; (4) Limit the discharge of Fats, Oils, and Grease (FOG) and other debris that may cause blockages; and (5) Enforce any violation of its sewer ordinances. 5.1 COMPLIANCE SUMMARY The City is regulated by several agencies of the United States Government and the State of California, pursuant to the provisions of Federal and State Law. Federal and State Laws (including, but not limited to: 1) Federal Water Pollution Control Act, commonly known as the Clean Water .Act (33 U.S.C. Section 1251 et seq); 2) California Porter Cologne Water Quality Act (California Water Code section13000 et seq.); 3) California Health & Safety Code sections 25100 to 25250; 4) Resource Conservation and Recovery Act of 1976 (42 U.S.C. Section 6901 et seq.); and 5) California Government Code, Sections 54739-54740) grant to the City the authority to regulate and/or prohibit, by the adoption of an ordinance, and by issuance of control mechanisms, the discharge of any waste, directly or indirectly, to the City sewerage facilities. Said authority includes the right to establish limits, conditions, and prohibitions; to establish flow rates or prohibit flows discharged to the City sewerage facilities; to require the development of compliance schedules for the installation of equipment systems and materials by all users; and to take all actions necessary to enforce its authority. Due to the industrial nature of the City a large number of wastewater generators are classified as Industrial Waste Dischargers by the Sanitation Districts of Los Angeles County (Districts), and thus required to obtain an Industrial Waste Discharge Permit. The Districts are a group of special districts serving the wastewater and solid waste management needs of over five million people and 3000 industrial users in Los Angeles County. The Districts were formed under the County Sanitation District Act, passed in 1923 by the California State Legislature. This Act provides for the .formation of sewerage authorities based not on political boundaries but rather on the geographic boundaries of the waste disposal problems to be solved. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 25 of 46 The Districts adopted a Wastewater Ordinance effective April 1,1972, as amended on July 1,1980, July 1, 1983, November 1, 1989, and July 1, 1998 to protect and finance the operation of the Districts' wastewater conveyance, treatment, and disposal facilities. Individual Districts also adopted Connection Fee Ordinances in 1981 (which were amended in 1984, 1990, 1992, and 1997). Companies that discharge industrial wastewater to the sewerage system are governed by both the Wastewater Ordinance and the Connection Fee Ordinance for the District in which the discharge is located. These legal mechanisms establish the Districts' Industrial Wastewater Discharge Permit, Connection Fee, and Surcharge Programs. The Industrial Wastewater Discharge Permit Program cr the regulation of industrial wastewater dischargers to protect the public health, environment, and the public sewerage system. Through a series of Ordinances and Resolutions adopted by the City Council, the. Sanitation. Districts of the County of Los Angeles, Portions of the Municipal Code of the City of Vernon and internally developed Plans and Requirements, the City possesses the necessary legal authority required by Section D, 13 (iii) Legal Authority of SWRCB Order No. 2006-0003: (1) The City prevents illicit discharges into its sanitary sewer system (including, but not limited to, I/I, stormwater, chemical dumping, and unauthorized debris) through the Municipal Code of the City of Vernon (Section 21.4.5), the Industrial baste Discharge Permit Requirements of the Sanitation Districts of Los Angeles County (Section 3.2.B.3), and the Wlastew er Ordinance of the Sanitation Districts ofL.osAngeles County (Sections 305 and 406); (2) The City requires that sewers and connections be properly designed and constructed in compliance with Standard Specifications forPublic Works Construction (Greenbook), City of Vernon Standard Dranrings, the Municipal Code of the pity of Vernon (Section 21.4.4), the Industrial Waste Discharge Permit Requirements of the Sanitation Districts ofLosAngeles County (Section 3.2.A), and the Wastewater Ordinance of the Sanitation Districts ofL.osAngeles County (Sections 211 and 301); (3) All laterals in the City's service area are private. The City ensures access for maintenance, inspection, or repairs for the private laterals of Industrial Waste Dischargers through the Industrial Wlaste Discharge Permit Requirements of the Sanitation Districts of Los Angeles County (Section 3.23), and the Wastewater Ordinance of the Sanitation Districts of Los Angeles County (Sections 206 and 303). Most all City -owned wastewater infrastructure is located in public Right -of -Way, for which the City has local authority and access. For the few City -owned facilities located on private property, access is secured through the City's unwavering enforcement of the requirement for sewer easements around all public sewer appurtenances located in private properties. These easements are detailed by the designer on the sewer construction plans and are reviewed through the iterative plan check process. Plan checkers take special care to ensure that maintenance crews will have room for access and equipment usage for both routine maintenance and replacement or repair construction as necessary; (4) The City limits the discharge of Fats, Oils, and Grease (FOG) and other debris that may cause blockages through the Municipal Code of the 00 of Vernon (Section 21.4.1); and lid City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 26 of 46 (5) The City enforces any violation of its sewer ordinances through the Municipal Code of the City of Vernon (Article VI). 5.2 COMPLIANCE DOCUMENTS The following documents allow the City to comply with the Legal Authority requirements of the WDR, and are attached as appendices: o Portions of the Municipal Code of the City of Vernon, City of Vernon, Appendix F. o City of Vernon Standard Dranrings, Department of Engineering, City of Vernon, Appendix G. o Los An County Department of Public Works Standard Drawings, County of Los Angeles, Appendix H. o LACSD Industrial Waste Discharge Permit &quirements, LACSD, Appendix I. o LACSD Wastewater Ordinance, LACSD, Appendix J. The following document is readily available to the general public, and has therefore not been attached as an appendix: .o Standard Specifications forPublic Works Construction (Greenbook), Public Works Standards, Inc., 2006. 3.3 DOCUMENT DESCRIPTIONS Each of the following documents provides a portion of the City's Legal Authority, as required in Section D, 13 (iii) Legal Authority of SWRCB Order No..2006-0003. 5.3.1 Portions of the Municipal Code o the City of Vernon (Abberadix F,) Applicable sections of the Municipal Code of the City of Vernon: o Section 21.3.1— Grants Director of Community Services, as the City Engineer, charge and control of all sewers in the city and shall construct, operate, maintain, and repair all such systems subject to the direction of the City Council. o Section 21.4.1 - States it is unlawful to dump any solid matter, liquids, oils, and grease into the public sewer system which would cause obstruction or damage. o Section 21.4.4 — States that the City Engineer has to approve any new connection to the public, sewer system for both industrial and non -industrial users. o Section 21.4.5 —States it is unlawful for any person to discharge industrial wastewater into the public sewer without first acquiring an Industrial Waste Discharge Permit. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 27 of 46 o Article VI — Presents the City's enforcement plan for violations of their sewer ordinances and/or City Code. 5.3.2 City of Vernon Standard Drawings (Apt)endix• G) Used as a standard for City facilities admitting waste into the sewer system, these drawings provide a guideline for installation of new sewer system facilities. All final plans must first be approved by the City Engineer. These drawings reference the Standard Specifications for Public forks Construction s r book), and include the City's standard drawings for: o Standard Trench Paving o Typical Trench Paving Section for Sewer Lateral o Standard Manhole "D" o Dura Plate 100 Manhole Liner 5.3.3 L.osAngeles County Dam-iment of Public Vorks Standard Drawings (Ai�be� ndix H) Used as a standard for Los Angeles County facilities admitting industrial waste into the sewer system, these drawings provide a guideline for installation of new sewer system facilities related to the Industrial- Wastewater Discharge Permit Requirements of the Sanitation Districts of Los Angeles County. These drawings include the county's sewer system standard drawings for: o Grease Interceptor o Rain Water Diversion System o Sampling Box o Sand and Grease Interceptor (Clarifier) 5.3.4 L.ACSD Industrial Waste Discharge Permit Beauirements (Appendix I) Any facility admitting industrial waste into the County sewer system is required to first apply for an Industrial Waste Discharge Permit.. Facilities designated as Significant Industrial Users are required to go through_a renewal/review permit process at a minimum of every five years. Sections of the Industrial Waste Discharge Permit R quirements of the Sanitation Districts of Los Angeles County, relevant to the City's Legal Authority, are presented below: o Section 3.2.A — This section details what sewer facility plans are required for industrial users in order to obtain an Industrial Waste Discharge Permit: a. Sewerage Plan City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 28 of 46 b. Plot Plan . C. Plans of Pretreatment and Monitoring Facilities o Section 3.2.13 — This section details more plan specifications for the permit submittal process , which can include: a. Spill Containment Systems b. Flow Measurement Systems C. Rainwater Management d. Combustible Gas Monitoring 5.3.5 LACSD Wastewater Ordinance (Abt�endix,t) Adopted in 1972 and most recently amended in 1998, all industrial users within the County owning a valid Industrial Waste Discharge Permit are required to comply with this Wastewater Ordinance. Applicable sections of the Wastewater Ordinance oftbe Sanitation D istrias of LosAngeler County include: o Section 206 — Inspectors and Monitoring Personnel o Section 211 — Approval of Plans and Issuance of Permits o Section 301 — Approval of Plans for Sewerage Construction o Section 303 — Inspection of Construction o Section 305 — Prohibited Rainwater, Groundwater and other Water Discharges o Section 406 - Prohibited and Restricted Waste Discharges 5.3.6 StandardSpecifications for Public Works Construction(Greenbook) The Greenbook, formally known as the Standard Specifications for Public Works Construction, is widely used by cities and counties from Santa Barbara County to San Diego. County. Publication of the Greenbook is under the oversight of Public Works Standards, Inc, a nonprofit mutual benefit corporation. It contains all the latest standards and recommendations that have been researched and approved by a 25-member committee, with representatives from the American Public Works Association, the Associated General Contractors of California, the Engineering Contractors Association, and the Southern California Contractors Association. CHAPTER 6. OPERATION AND MAINTENANCE PROGRAM , The City's Operating and Maintenance Program addresses those mandatory SSMP provisions outlined in Section D, 13 (iv) Operation and Maintenance Program of SWRCB Order No. 2006- 0003. The City's Operation and Maintenance Program encompasses the following components: (I.;`: An up-to-date map of the sanitary sewer system, showing all gravity line segments and manholes, pumping facilities, pressure pipes and valves, and applicable stormwater conveyance facilities; (2) Routine preventive operation and maintenance activities by staff, including a system for scheduling regular maintenance and cleaning of the sanitary sewer system with more frequent cleaning and maintenance targeted at known problem areas. The Preventative Maintenance (PM) program includes a system to document scheduled and conducted activities, such as work orders; (3) A rehabilitation and replacement plan to identify and prioritize system deficiencies and implement short-term and long-term rehabilitation actions to address each deficiency. The program should include regular visual and TV inspections of manholes and sewer pipes, and a system for ranking the condition of sewer pipes and scheduling rehabilitation. Rehabilitation and.replacement focuses on sewer pipes that are at risk of collapse or prone to more .frequent blockages due to pipe defects. Finally, the rehabilitation and replacement plan includes a capital improvement plan that addresses proper management and protection of the infrastructure assets. The plan includes a time schedule for implementing the short- and long-term plans plus a schedule for developing the funds needed for the capital improvement plan; (4) Training on a regular basis for staff in sanitary sewer system operations and maintenance; and (5) Equipment and replacement part inventories, including identification of critical replacement parts. 6.1 COMPLIANCE SUMMARY The City's Operation and Maintenance (O&M) Program includes routine cleaning of all City owned. gravity mains, at a minimum, every 2 years. The City does not own or operate a sewer lift station and/or pressure pipes. The City maintains an up-to-date map of the sanitary sewer system, showing all gravity line segments and manholes, as well as a map of all gravity main problem areas. The City maintains a database of all cleaning activity which details the time, date and location of each pipe cleaned, as well as remarks noted by the sewer crew. The City maintains this database in FileMaker Pro, and records all preventative maintenance and work orders. The City also maintains a City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 30 of 46 separate, but linked, database which documents the condition and maintenance history of each City owned manhole. The City recently completed a system -wide CCTV inspection of all manholes and gravity mains in 2008, and intends to conduct another CCTV video inspection of all Fats, Oils and Grease (FOG) hot spots and areas of interest, as identified in Appendix L, every five years City engineers are in the process of reviewing video of all problem areas noted in the inspection, as well as video of all previously identified problem areas. The City anticipates developing a preliminary ranking system for these gravity mains by August 2010, to allow the City to identify gravity mains that are at risk of collapse or prone to more frequent blockages due to pipe defects. These lines will then be prioritized and placed on the City's 5-Year Capital Replacement Plan, which is updated annually. Funding for all sewer rehabilitation and replacement projects is anticipated through the City's General Fund. The City provides on -going in house technical, job skills and safety training for its staff. The City has been and continues to conduct training of Waste Discharge Requirements (WDR) awareness. The City has also developed an SSO Response Training, and conducts other internal training programs on line cleaning, vactor truck operation, sewer grit removal and dumping, and other related tasks. The City has not encountered a situation or non-compliance event that would cause it to believe that O&M Staff is not appropriately trained. The City maintains a Pipe Yard with all necessary, ,back-up parts as inventory to support their gravity mains and manholes. In . summary, the City maintains a Operation and Maintenance Program which meets the requirements of Section D, 13 (iv) Operation and Maintenance Program of SWRCB Order No. 2006-0003: (1) The City maintains up-to-date AutoCAD and Geographic Information System (GIS) databases of their sanitary sewer system, comprised of gravity mains and manholes. The City does not own or operate a sewer lift station and/or pressure pipes. This database was utilized to create a map of the City's wastewater facilities, as shown in Figure 1 of Appendix K. Table 1 of Appendix I< identifies the hydraulic data associated with the City -owned wastewater facilities presented in Figure 1. Maps of City -owned Storm water facilities are also maintained by the City; (2) The City routinely cleans all City -owned gravity mains, at a minimum, of every 2 years. The City inspects known problem area gravity mains daily, and .cleans these areas as -needed. A map and descriptive table of these problem area gravity mains is presented in Appendix L. The City maintains a database of all cleaning activity which details the time, date and location of each pipe cleaned, as well as remarks noted by the sewer crew. The City maintains this database in FileMaker Pro, and records all preventative maintenance and work orders. The City also maintains a separate, but linked, database which documents the condition and maintenance history of each City owned manhole; (3) The City recently completed a system -wide CCTV inspection of all manholes and gravity mains in 2008, and intends to conduct another CCTV video inspection of all Fats, Oils and City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 31 of 46 Grease (FOG) hot spots and areas of interest, as identified in Appendix L, every five years. City engineers are reviewing video of all problem areas noted in the inspection, as well as video of all problem areas presented in Appendix L. The City anticipates developing a preliminary ranking system for these gravity mains by August 2010, to allow the City to identify gravity mains that are at risk of collapse or prone to more frequent blockages due to pipe defects. These lines will then be prioritized and placed on the City's 5-Year Capital Replacement Plan, which is updated annually. Funding for all sewer rehabilitation and replacement projects is anticipated through the City's General Fund; (4) The City provides on -going in house technical, job skills and safety training for its Staff. The City has been and continues to conduct training of Waste Discharge Requirements (WDR) awareness. The City has developedan SSO Response Training. The City also conducts other internal training programs on line cleaning, vactor truck operation, sewer grit removal and dumping, and other related tasks. The City has not encountered a situation or non-compliance event that would cause it to believe that O&M Staff is not appropriately trained; and (5) The City maintains a Pipe Yard with all necessary, back-up parts as inventory to support their gravity mains and manholes. The City does not own or operated a lift station and/or pressurized pipe. 6.2 COMPLL,4NcE DocUMENTs The following documents, attached as appendices, support the City's Operation and Maintenance Program, thereby allowing the City to comply with. the Operation and Maintenance Program requirements of the WDR: o A Map and Table of the City's sanitary sewer system, including all gravity line segments and manholes, Appendix K. o A Map of the City's Sewer System Areas of Interest, Appendix L. 6.3 DOCUMENT DESCRIPTIONS A description for each compliance document listed above is described below: 6.3.1 Map and Table of Existing Wastewater Facilitiesr (APbendix K� The City maintains up-to-date AutoCAD and Geographic Information System (GIS) databases of their sanitary sewer system, comprised of gravity mains and manholes. The City does not own or operate a sewer lift station and/or pressure pipes. This database was utilized to create a map of the City's wastewater facilities, as shown in Figure 1 of Appendix K. Table 1 of Appendix K identifies the hydraulic data associated with the City -owned wastewater facilities presented in Figure 1. lid City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 32 of 46 6.3.2 Maims of Sewer System Areas of Interest (A�Pendix L) A map and associated table detailing location and cleaning schedule for FOG hot spots and other areas of interest, and the customers associated with each FOG hot spot, as well as other areas of interest the City of Vernon. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 33 of 46 CHAPTER 7. FATS, OILS AND GREASE (FOG) CONTROL PROGRAM The City's Fats, Oils and Grease Control Program addresses those mandatory SSMP provisions outlined in Section D, 13 (vii) FOG Control Program of SWRCB Order No. 2006-0003. The City's FOG Control Program helps reduce the amount of Fats, Oils and Grease discharged to the sanitary sewer system, by including: ('� A plan and schedule for the disposal of FOG generated within the sanitary sewer system service area, and a list of acceptable disposal facilities; (2) Legal authority to prohibit discharges to the system and identify measures to prevent SSOs and blockages caused by FOG; (3) Requirements to install grease removal devices, design standards for the removal devices, maintenance requirements, BMP requirements, record keeping and reporting requirements; (4) Authority to inspect grease producing facilities, enforcement authorities, and sufficient staff to inspect and enforce the FOG ordinance; (5) Identification of sanitary sewer system sections subject to FOG blockages and establishment of a cleaning maintenance schedule for each section; (6) Development and implementation of source control measures for all sources of FOG discharged to the sanitary sewer system for each section identified; and (7) Implementation of a plan and schedule for a public education outreach program that promotes proper disposal of FOG. 7.1 COMPLIANCE SUMMARY To reduce the amount of Fats, Oils and Grease (FOG) discharged to City's sanitary sewer system, the City has developed a FOG control program. All major industrial users within the City's service area are identified as part of an initial occupancy inspection by the Department of Community Services. Accordingly, these customers must complete an Industrial Waste Discharge Permit application with the Sanitation Districts of Los Angeles County (LACSD). This application includes a wastewater sewerage plan showing sewers and associated facilities for the handling of industrial wastewater from the point of origin to the public sewer connection, and identification of all wastewater generation processes. When applicable, additional plans containing spill containment systems, grease interceptors and/or, flow measurement systems are included. The City is within LACSD District No.'s 1,2 and 23. The.City requires the installation of a grease interceptor prior to providing service for all new restaurants. Sand and Grease interceptor inspections for major industrial users are conducted by LACSD staff. The City's .Health and Environmental Control Department is authorized as a Certified Unified Program Agency (CUPA) by the California Environmental Protection Agency. As such, the Health City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 34 of 46 and Environmental Control Department is authorized to conduct hazardous material inspections, which may include properties with privately owned interceptors. The City Health and Environmental Control Department logs their inspections in an Envision database, accessed through Decade Software, and has sufficient staff to inspect restaurants twice per year The City currently uses the Los Angeles County Department of Public Works' and LACSD standard drawings for both Sand and Grease Interceptors, and is in the process of developing their own standard drawings. The City requires private owners to maintaintheir interceptors, and maintains a list of several independent vendors that will collect and dispose of accumulated FOG. In an effort to identify and maintain information of sanitary sewer sections subject to FOG blockages, the City has developed a map and list of FOG hot spots, which includes the current frequency of cleaning' for each segment. In summary, the City maintains a FOG Control which meets the requirements of Section D, 13 (vii) FOG Control Program of SWRCB Order No. 2006- 0003: (1) The City maintains a plan and schedule for the disposal of FOG generated within their. sanitary sewer system service area. All major industrial users within the City's service area are identified as part of an initial occupancy inspection by the Department of Community Services. These customers must complete an Industrial Waste Discharge Permit application with LACSD. Accordingly, they are required to maintain and operate appropriate pretreatment facilities, per Section 412 of the LACSD Wastewater Ordinance. The City requires the installation of a grease interceptor prior to providing service to new restaurants. Interceptors must be maintained by their owners, and pumped out when full. Restaurants are required to have bi-annual interceptor inspections while major industrial users have inspections per the LACSD Wastewater Ordinance, specifically Section 206 The City has provided a list of independent vendors which provide collection and disposal services within their service area in their Independent Collectionl Disposal Service Vendor Last,, (2) The City possesses the legal authority to prohibit discharges to the system and identify measures to prevent SSO's and blockages caused by FOG through the Code of the Caty of Vernon, specifically Sections 21.3.1 and 21.4.1; (3) All major industrial users within the City's service area are identified as part of an initial occupancy inspection by the Department of Community Services. These customers must complete an Industrial Waste Discharge Permit application with LACSD. Accordingly, they are required to install, design, maintain, monitor and report their grease removal devices in compliance with LACSD Wastewater Ordinance. The City requires all new restaurants to install Grease Interceptors; (4) All major industrial users within the City's service area are required to complete an Industrial Waste Discharge Permit application with LACSD. Accordingly, LACSD has authority to inspect all major industrial users and restaurants as per the LACSD. Wastewater Ordinance, specifically Section 206. Furthermore, the. City's Health and Environmental Control Department is authorized as a Certified Unified Program Agency (CUPA) by the City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 35 of 46 California Environmental Protection Agency. As such, the Health and Environmental Control Department is authorized to conduct hazardous material inspections, which may include properties with privately owned interceptors. The City Health and Environmental Control Department logs their inspections in an Envision database, accessed through Decade Software, and has sufficient staff to inspect restaurants twice per year; (5) .The City .has identified sections of their sanitary sewer system subject to high levels of FOG in their Map and List ofSemerline Problem Areas. Accordingly, the City has put together a map of FOG hot spots with an associated table, conveying both location and maintenance schedule for each problem area; (6) The City has developed and implemented source control measures for all sources of FOG discharged to the sanitary sewer system for each section identified in their Map and List of Sewer Line Problem Areas by prohibiting the discharge of FOG into their sewer system per Code of the City of Vernon, Section 21.4.1, and requiring all major industrial users and restaurants to complete an Industrial Waste Discharge Permit application with LACSD, as per Code of the City of Vernon, Section 21.4.5; and (7) The City has developed a Public Outreach Program for public education promoting proper disposal of FOG and best management practices (BMP). The City has developed formal literature to be disseminated to all customers every three years, as well as posted on their web site; -sa-wv.cit- ofvernon.org. 7.2 COMPLIANCE DocumElvTs The. -following documents are attached as appendices in order support the City's FOG Control Program, thereby allowing the City to comply with the Design and Performance Provisions requirements of the WDR: o Portions of the Municipal Code of the City of Vernon, City of Vernon, Appendix F. o City of Vernon Standard Drawings, City of Vernon; Appendix G. o La c An County Doartment of Public Works Standard Drawings, County of Los Angeles, Appendix H. o LACSD Wastewater Ordinance, LACSD, Appendix J. o Map and List of SewerAreas of Interest, City of Vernon, Appendix L. o Independent Collection/Disposal Service Vendor Last, City of Vernon, Appendix M. o Public Outreach Program forFOG Control, City of Vernon, Appendix N. o Standard Specifications for Public forks Construction (Greenbook), Public Works Standards, Inc., 2006. 7.3 DOCUMENT DESCRIPTION A description for each compliance document listed above is described below: 7.3. l Portions of the Municipal Code of the City of Vernon (Appendix F) Applicable sections of the Municipal Code of the City of Vernon: o Section 21.3.1 — Grants Director of Community Services, as the City Engineer, charge and control of all sewers in the city and shall construct, operate, maintain, and repair all such systems subject to the direction of the City Council. o . Section 21.4.1 — States it is unlawful to dump any solid matter, liquids, oils, and grease into the public sewer system which would cause obstruction or damage. o Section 21.4.5 — States it is unlawful for any person to discharge industrial wastewater into the public sewer without first acquiring an Industrial Waste Discharge Permit. 7.3.2 City of Vernon Standard Drannnes (APe� n_dix G) Used as a standard for City facilities admitting waste into the sewer system, these drawings provide a guideline for installation of new sewer system facilities. All final plans must first be approved by the city engineer. These drawings reference the Standard Specifications for Public Works Construction (Greenbook), and include the City's standard drawings for: o Standard Trench Paving o Typical Trench Paving Section for Sewer Lateral o Standard Manhole "D" o Dura Plate 100 Manhole Liner 7.3.3. L.os Angeles County DWartment ofPublic Wlorks Standard DrawnQs (APhendix H Used as a standard for Los Angeles County facilities admitting industrial waste into the sewer system, these drawings provide a guideline for installation of new sewer system facilities related to the Industrial Waste Discharge Permit Requirements of the Sanitation Districts. of Los Angeles County. These drawings include the county's sewer system standard drawings for:, City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 37 of 46 o Grease Interceptor o Rain Water Diversion System o Sampling Box o Sand and Grease Interceptor (Clarifier) 7.3.4 LACSD Wastewater Ordinance (A� endix1) Adopted in 1972 and most recently amended in 1998, all industrial users within the County owning a valid Industrial Waste Discharge Permit are required to comply with this Wastewater Ordinance. :Applicable sections of the Wastewater Ordinance of the Sanitation Districts of Los Angeles County include: o Section 206 — Inspectors and Monitoring Personnel o Section 211 - Approval of Plans and Issuance of Permits o Section 301 — Approval of Plans for Sewerage Construction o Section 303 — Inspection of Construction o Section 305 — Prohibited Rainwater, Groundwater and other Water Discharges o Section 406 — Prohibited and Restricted Waste Discharges 7:3.5 Map and Last of SewerAreas of Interest (Appendix L) A map and associated table detailing location and cleaning schedule for FOG hot spots and the customers associated with each FOG hot spot, as well as other areas of interest the City of Vernon. 7.3.6 Independent Collectionl Disposal Service Vendor List (4p4endix M) A partial list of independent vendors which can provide collection and disposal services within their service area. There are several independent vendors which can provide grease interceptor cleaning services. This list represents a random selection of a portion of these vendors, and does not imply City endorsement of any specific vendor. 7.3.7 Public Outreach -for FOG Control (Appendix N,) The City has developed this document to be supplied to all customers every three years, as well as posted on their website, wtiw.cityofvernon.or. This mailer further defines FOG and its importance of being properly managed. It includes general prevention tips such as technology and cleaning methods. In order to accommodate each of the following FOG producers, cleaning methods and technology target the general public, as well as restaurants and the automotivesector. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 38 of 46 7.3.8 Standard Specifications for Public Works Construction (Greenbook The Greenbook, formally known as the Standard Specifications for Public Works Construction, is widely used by cities and counties from Santa Barbara County to San Diego County. Publication of the Greenbook is under the oversight of Public Works Standards, Inc, a nonprofit mutual benefit corporation. It contains all the latest standards and recommendations that have been researched and approved by a 25-member committee, with representatives from the American Public Works Association, the Associated General Contractors of California, the Engineering Contractors Association, and the Southern California Contractors Association. The City's Standard Drawings (Appendix G) reference the Greenbook, and are used as a standard for City facilities admitting waste into the sewer system and serve as a guideline for installation of new sewer system facilities. City Standard Drawings referencing the Greenbook include standard trench paving, typical trench paving section for sewer lateral, standards manhole `.`D" and Dura Plate 100 Manhole liner. City of Vernon Sewer System Management Plan; Volume I Final Report March 2010 Page 39 of 46 CHAPTER 8. SYSTEM EVALUATION AND CAPACITY ASSURANCE PLAN The City's System Evaluation and Capacity Assurance Plan addresses those mandatory SSMP provisions outlined in Section D, 13 (viii) System Evaluation and Capacity Assurance Plan of SWRCB Order No. 2006-0003. The City is in the process of preparing and implementing a Capital Improvement Program (CIP) that will provide hydraulic capacity of key sanitary sewer system elements for dry weather peak flow ij ons, as well as the appropriate design storm or wet weather event. The City's System Evaluation and Capacity Assurance Plan encompasses the following components: (1) Evaluation - Actions needed to evaluate those portions of the sanitary sewer system that are experiencing or contributing to an SSO discharge caused by hydraulic deficiency. The evaluation provides estimates of peak flows (including. flows from SSOs that escape from the system) associated with conditions similar tothose causing overflow events, estimates of the capacity of key system components, hydraulic deficiencies (including components of the system with limiting capacity) and the major sources that contribute to the peak flows associated with overflow events; (2) Design Criteria - Where design criteria do not exist or are deficient, undertake the evaluation identified in (1) above to establish appropriate design criteria; (3) Capacity Enhancement Measures - The steps needed to establish a short- and long-term CIP to address identified hydraulic deficiencies, including prioritization, alternatives analysis, and schedules. The CIP may include increases in pipe size, I/I reduction programs, increases and redundancy in pumping capacity, and storage facilities. The CIP shall include an implementation schedule and shall identify sources of funding;'and (4) Schedule — The City has developed a schedule of completion dates for all portions of the CIP developed in (1)-(3) above. This schedule shall be reviewed and updated consistent. with the SSMP review and update requirements as described in Section D. 14. 8.1 COMPLIANCE SUMMARY The City is in the process of developing a System Evaluation and Capacity Assurance Plan which meets the requirements of Section D, 13 (viii) System Evaluation and Capacity Assurance Plan of SWRCB Order No. 2006-0003: (1) The City's 2008 Sewer System Hydraulic Analysis includes wastewater flow projections and a hydraulic analysis of all City -owned gravity mains. The analysis, performed with an H20Map Sewer hydraulic model, includes estimates of peak dry and wet weather flows. The City recently completed the 2009 Wet Weather Flow Study, which -was. utilized to calibrate the hydraulic model. The 2008 Sewer System Hydraulic Analysis outlines a Wastewater Capital Improvement Program to mitigate projected deficiencies in the Existing, 5-Year,10-Year, and 20-Year (Planning Horizon) time increment. Sanitary Sewer Overflows were not allowed to exit the system during the hydraulic analysis. As an alternative to upsizing the City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 40 of 46 capacity of a sewer line the City may opt to require a reduction in flow of an industrial waste discharger to such an extent that the existing sewer line will have sufficient capacity to meet the City's design criteria; (2) The City's 2008 Seaver System Hydraulic Analysis summarizes the appropriate design and replacement criteria necessary to ensure sufficient capacity, as well as preserve the estimated life -cycle of wastewater infrastructure; i a, The City has established a short- and long-term Capital Improvement Program (CIP) to address projected hydraulic deficiencies. The CIP is included in the 2008 Seaver System Hydraulic Analysis, and includes projected cost estimates, alternatives analysis and project prioritization by 5-Year dine increment. As an alternative to upsizing the capacity of a sewer line the City may.opt to require a reduction in flow of an industrial waste discharger to such an extent that the existing sewer line will have sufficient capacity to meet the City's design criteria. The City's 2008 Seaver System Hydraulic Analysis presents a phased and prioritized Wastewater Capital Improvement Plan (CIP), with funding anticipated through the City's General Fund; and {4) The City has developed their CIP, as presented above, and plans to review and update it as necessary. 8.2 COMPLIANCE DOCUMENTS The following documents support the City's System Evaluation and Capacity. Assurance Plan, thereby allowing the City to comply with the .System Evaluation and Capacity Assurance Plan requirements of the WDR: 0 2008 Seaver System Hydraulic Analysis, Infrastructure Engineering Corporation, March 2010, Appendix O. 8.3 DOCUMENT DEscB_IpTyoNs A. description for each compliance document listed above is described below: 8.3.1 2008 Seaver Svstem HvdraulicAnalvsistiendix O,) Infrastructure Engineering .Corporation completed this March 2010 review and updated analysis of the wastewater flow projections and hydraulic analysis. The analysis, performed with an H2OMap Sewer hydraulic model, includes estimates of peak dry and wet weather flows, and. outlines a Wastewater Capital Improvement Program to mitigate projected deficiencies in the Existing, 5-Year, l O=Year and 20-Year (Planning Horizon) time increment. As an alternative to upsizing the capacity of a sewer line the City may opt to require a reduction in flow of an industrial waste discharger to such an extent that the existing sewer line will have sufficient capacity to meet the City's design criteria. Specific sections in the 2008 Seaver System Hydraulic Analysis include: City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 41 of 46 o Wastewater Flows and Projections o Hydraulic Model Development o Hydraulic Model Calibration o Gravity Main Design Criteria, Replacement Criteria and Unit Costs o Hydraulic Modeling Results o Capital Improvement Program City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 42 of 46 CHAPTER 9. MONITORING, MEASUREMENT, AND PROGRAM MODIFICATIONS The City's Monitoring, Measurement, and Program Modifications addresses those mandatory SSMP provisions outlined in Section D, 13 (ix) Monitoring, Measurement, and Program Modifications of SWRCB Order No. 2006-0003, The Monitoring, Measurement, and Program Modifications encompasses the following components: (1) Maintain relevant information that can be used to establish and prioritize appropriate SSMP activities; (2) Monitor the implementation and, where appropriate, measure the effectiveness of each element of the SSMP; (3) Assess the success of the preventative maintenance program; (4) Update program elements, as appropriate, based on monitoring or per evaluations; and (5) Identify and illustrate SSO trends, including: frequency, location, and volume. 9.1 COMPLL ONCE SUMMARY The City tracks the location and cause of all SSOs, blockages, and gravity main hot -spots. The City maintains a database of all cleaning activity which details the time, date and location of each pipe cleaned, as well as remarks noted by the sewer crew. The City maintains this database in FileMaker Pro, and records all preventative maintenance and work orders. The City also maintains a separate, but linked, database which documents the condition and maintenance history of each City owned manhole. The City recently completed a system -wide CCTV inspection of all manholes and gravity mains in 2008, and intends to conduct another CCTV video inspection of all Fats, Oils and Grease (FOG) hot spots and areas of interest, as identified in Appendix L, every five years. City engineers are reviewing video of all problem areas noted in the inspection, as well as video of all previously identified problem areas. The City is in the process of developing a preliminary ranking system for these gravity mains, to.allow the City to identify gravity mains that are at risk of collapse or prone to more frequent blockages due to pipe defects. These lines are then prioritized and placed on the City's 5-Year Capital Replacement Plan; which is updated annually. All major industrial users within the City's service area are identified as part of an initial occupancy inspection by the Department of Community Services. Accordingly, these customers must complete an Industrial Waste Discharge Permit application with the Sanitation Districts of Los Angeles County (LACSD). This application includes a wastewater sewerage plan showing sewers and associated facilities for the handling of industrial wastewater from the point of origin to the public sewer connection, and identification of all wastewater generation processes. When applicable, additional plans containing spill containment systems, grease interceptors and/or flow measurement systems are included. The City requires all new restaurants to install Great City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 43 of 46 Interceptors. Sand and Grease interceptor inspections are conducted by the City of Vernon Health Department, with each inspection logged in the City's Envision database, accessed through Decade Software. In order to monitor the implementation and measure the effectiveness of the SSMP, the City tracks several performance indicators. These indicators are recorded as outlined in Section 10 (Documentation) of their Sanitary Sewer Overflow Response Plan (Appendix E), as well as through archiving their SVrRCB on-line reports. Performance indicators include: o Location of all SSOs over the past 12 months; o Number of SSOs over the past 12 months, distinguishing between dry weather overflows and wet weather overflows; o Volume distribution of SSOs (e.g. number of SSOs < 100 gallons,100 to 999 gallons, 1,000 to 9,999 gallons, > 10,000 gallons); o Volume of SSOs that was contained in relation to total volume of SSOs; o SSOs by cause (e.g. roots, grease, debris, pipe failure, pump station failure, capacity, other); o Number of Interceptors inspected over the past 12 months; o Percentage of Interceptors inspected over the past 12 months; o Miles of gravity mains cleaned over the past. 12 months; o Percentage of total gravity mains cleaned over the past 12 months; In order to keep the SSMP up to date, the City has assigned a staff member to review the SSMP annually. In addition to tracking the above performance indicators, the staff member will review all sections of the SSMP for effectiveness and timeliness. Collection system personnel will. also be consulted annually to. review the effectiveness of the SSMP, and help identify potential areas for improvement. In summary, the City maintains a Monitoring, Measurement, and Program Modifications which meets the requirements of Section D,13 (ix) Monitoring, Measurement, and Program Modifications of SWRCB Order No. 2006-0003: (1) The City tracks the location and cause of all SSOs, blockages, and gravity main hot -spots. The City maintains a database of all cleaning activity which details the time, date and location of each pipe cleaned, as well as remarks noted by the sewer crew. The City maintains this database in FileMaker Pro, and records all preventative maintenance and work orders. The City also maintains a separate, but linked, database which documents the City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 44 of 46 condition and maintenance history of each City owned manhole. The City recently completed a system -wide CCTV inspection of all manholes and gravity mains in 2008, and intends to conduct another CCTV video inspection of all Fats, Oils and Grease (FOG) hot spots and areas of interest, as identified in Appendix L, every five years. Interceptor inspections are conducted by the City of Vernon Health Department, with each inspection logged in the City's Envision database, accessed through Decade Software; (2) The City monitors the implementation of the SSMP, and measures the effectiveness of each element by SSMP by developing and tracking performance indicators on an annual basis; (3) By tracking performance indicators, the City is able to assess the success of their preventative maintenance program; (4) The City has assigned a staff member to review the SSMP annually, in order to update all program elements as appropriate. In addition to tracking the above performance indicators, the staff member will review all sections of the SSMP for effectiveness and timeliness. Collection system personnel will also be consulted annually to review the effectiveness of the SSMP, and help identify potential areas for improvement; and (5) The City tracks the I location and volume of all SSOs, as outlined in Section 10 (Documentation) of the Sanitary Sewer Overflow Response Plan (Appendix E), as well as the through the archiving of their SWRCB on-line reports. The City calculates the frequency of their SSO's from these records. 9.2 COMPLIANCE DOCUMENTS The following document allows the City to comply with the Monitoring, Measurement, and Program Modifications requirements of the WDR, and are attached as appendices. o Map and Last of SewerAreas of Interest, City of Vernon, Appendix L. 9.3 DOCUMENT DESCRIPTIONS A description for each compliance document listed above is described below: 9.3.1 Map and List ofSewerAreas of Interest At endix L) A map and associated table detailing location and cleaning schedule for FOG hot spots and the customers associated with each FOG hot spot, as well as other areas of interest the City of Vernon. 7 F City of Vernon Sewer System Management Plan; Volume I Final Report March 2010 Page 45 of 46 CHAPTER 10. SSMP PROGRAM AUDITS The City's SSMP Program Audits addresses the mandatory SSMP provision outlined in Section D. 13 (x) SSMP Program Audits of SWRCB Order No. 2006-0003. The City is required to conduct periodic internal audits, appropriate to the size of the system and the number of SSOs. At a minimum, these audits must occur every two years and a report must be prepared and kept on file..This audit shall focus on evaluating the effectiveness of the SSMP and The City's compliance with the SSMP requirements identified in Section D,13 of SWRCB Order No. 2006-0003, including the identification of any deficiencies in the SSMP and steps to correct them. 10.1 COMPLIANCE SUMMARY The City will conduct an internal audit of their SSMP every two years, and focus on the effectiveness of the SSMP and the City's compliance with the SSMP requirements of Order No. 2006-0003. The audit will include, but may not be limited to, the following: o Any significant changes to components of the SSMP, including but not limited to, Legal Authority, FOG Control Program or Overflow Emergency Response Plan. o Any significant changes to the referenced compliance documents, presented as Volume II of the Sewer System Management Plan. o SSMP implementation efforts over the past two years; o A description of additions and improvements made the sanitary sewer collections system during the past two years; o A description of the additions and improvements planned for the upcoming two years, with and estimated schedule for implementation. o Strategies to correct deficiencies, if identified, will be developed by the responsible City division. 10.2 COMPLIANCE DOCUMENTS There are no compliance. documents for this section. 10.3 DOCUMENT DESCRIPTIONS There are no document descriptions for this section. City of Vernon Sewer System Management Plan, Volume I Final Report March 2010 Page 46 of 46 CHAPTER 11. COMMUNICATION PROGRAM The City's Communication Program addresses the mandatory SSMP provision outlined in Section D, 13 (xi) Communication Program of SWRCB Order No. 2006-0003. The City should communicate on a regular basis with the public on the development, implementation, and performance of its SSMP. The communication system shall provide the public the opportunity to provide input to the City as the program is developed and implemented. The City shall also create a plan of communication with systems that are tributary and/or satellite The City's sanitary sewer system. 11.1 COMPL LANCE SUMMARY The City will communicate on a regular basis with interested parties on the implementation and performance of this SSMP. The communication program allows interested parties to provide input as the program is developed and implemented. The City will make a Draft version of the SSMP available to the public, allow time for review, and invite public comments at a City Council meeting, thereby allowing for public input. The City anticipates discussions regarding the development and implementation of their SSMP with Los Angeles County in the next 3 years, as all wastewater generated in the City is conveyed to facilities owned by Los Angeles County. All wastewater conveyed in City -owned facilities is generated within the City's service area, as no other agency is tributary to City -owned facilities. Additionally, the City's website cimofvernonior ) presents information about on -going efforts in regards to both the SSMP, and FOG control programs. The City anticipates agendizing the SSMP annually to allow for discussion at a City Council Meeting, thereby providing the opportunity to comment on the implementation and performance of the SSMP. 11.2 COMPLIANCE DOCUMENTS There are no compliance documents for this section. 11.3 DOCUMENT DESCRIPTIONS There are no compliance documents for this section. A haft' astn.icture E.ngineei-itaq Carps}nation CITY OF VERNON SEWER SYSTEM MANAGEMENT PLAN VOLUME II - APPENDIX "O" SYSTEM EVALAUTION AND CAPACITY ASSURANCE PLAN Date: March 19, 2010 —FINAL October 16, 2009 —FINAL DRAFT September 4, 2009 —2nd DRAFT September 19, 2008 —18t DRAFT Subject: 2008-09 SEWER SYSTEM HYDRAULIC ANALYSIS Prepared By: Genevieve Chambliss, E.I.T.; Jeff Kirshberg Ph.D., P.E. (C67882) Reviewed By: Scott Humphrey, P.E. (C64206) EXECUTIVE SUMMARY In support of the Sewer System Management Plan (SSMP), Infrastructure Engineering Corporation (IEC) has performed a hydraulic analysis of the wastewater collection system in the City of Vernon (City). IEC developed wastewater flow projections for the Existing, 5-Year, 10-Year and the 20- Year (Planning Horizon) time increments. As summarized in Table 3, the City's Existing average dry weather flow of 5,546 gpm is anticipated to increase by 0.7% per annum, reaching 6,381 gpm in the 20-Year time -increment. In order to estimate the 5-Year',10-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per anum increase was assumed, consistent with .the City's 2005 Urban Water Management Plan. The City will revise their Urban Water Management Plan in 2010, and re-evaluate the projected growth of water demands as part of theplan's development. As projected demands are anticipated to reflect Governor Schwarzenegger'spending 20x2O2O legislation, the City's water demands, and respective wastewater projections, may decrease as much as 20% in order to achieve statewide compliance goals. IEC utilized MWH Soft, Inc.'s H2OMap Sewer software to create a wastewater collection system model for the City. The model was used to evaluate existing City owned wastewater facilities and provide recommendations for capsizing. The City recently completed the 2009 Wet Weather Flow Study, which included wastewater flow data obtained for (10) sites. Table 4 presents the comparison between the results generated with the H2OMap steady state scenarios and the City's flow meter data, illustrating a successful calibration effort. Under Existing flow conditions, 29 gravity main segments (measured manhole to manhole) satisfy the City's replacement criteria, for a total of 6,997 linear feet. An additional 5 gravity mains segments satisfy the City's replacement criteria in the 10-Year time increment, with a combined additional length of 610 ft. All 34 gravity main segments have been recommended for upsizing in compliance with the City's design criteria in the 20-Year (Planning Horizon) time -increment. 5242 Katello Ave, Suite 205, Los Alamitos, California 90720 T 562.344.9060 F 562.344.9055 www.iecorporation.com vfxt�s. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 2 of 36 These gravity main segments, illustrated in Figures 4 through 12, have been included in the City's proposed Wastewater Capital Improvement Plan (CIP), with estimated probable costs of $2.3 Million for Fiscal Years 2009-2013, and $0.2 Million for Fiscal Years 2019-2023, totaling $2.5 Million. Estimated probable costs provided represent Order of Magnitude level costs as established by the American Association of Cost Engineers (RACE) and represent an accuracy of +50% to - 30%. WASTEWATER FLOW PROJECTIONS As summarized in Table 3, the City's Existing average dry weather flow of 5,546 gpm is anticipated to increase by 0.7% per annum, reaching 6,381 gpm in the 20-Year time -increment. In order to estimate the 5-Year, 10-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per anum. increase was assumed, consistent with the City's 2003 Urban WlaterManagernentPlan. The City will revise their Urban Water Management Plan in 2010, and rye -evaluate the projected growth of water demands as part of the plan's development. As projected demands are anticipated to reflect Governor Schwarzenegger's pending 20x2020 legislation, the City's water demands, and respective wastewater projections, may decrease as much as 20% in order to achieve statewide compliance goals. Average Dry Weather Wastewater Flow (ADWIF) Average dry weather wastewater flow (ADWF), or base flow; is domestic (or sanitary) wastewater flow from residential, commercial, and institutional (schools, churches, hospitals, etc.) sources, plus industrial wastewater. The wastewater flow is affected by population and land uses in an area. Wastewater flow varies throughout the day in response to personal habits and business operation. To calculate the City's ADWF, each parcel's 2007 average daily water demand multiplied by an estimated return -to -sewer ratio. The City's 2007 water billing records were analyzed, and a list of the Major Water Users, with average daily water demands greater than 10,000 gpd, was compiled. As presented in Table 1, there are 91 Major Users accounting for 7.9 mgd, or 89%, of Vernon's total water demand. Water bills were assigned to individual parcels, as illustrated in Figure 1. For those parcels serviced by the California Water Company, in sewer basins 14,15,17,18, 20, 21 and 22, water billing records were not available. Each parcel's average daily water demand was then multiplied by a corresponding return -to -sewer (RTS) ratio, based on land use. Initially, for industrialand residential parcels, RTS ratios of 0.95 and 0.65 were utilized respectively, with the exception of the Seven-up Bottling Company. For this parcel a RTS ratio of 0.2 was used, to account for the quantities of water consumed in their beverage preparation. For those parcels serviced by the California Water Company, available wastewater flow meter data was utilized to estimate an ADWF industrial duty factor of395 gpd/acre. Additionally, when available, average dry weather flows were obtained from wastewater discharge permits. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 3 of 36 For the basins monitored in the City's recent 2009 Wet Weather Flow Study, estimated average daily flows were compared to those recorded in the study, as presented in Table 4 in a subsequent section. In addition to confirming the 395 gpd/acre estimate for California Water Company customers, RTS were specifically altered for the following basins as monitor data revealed lower base flows than previously anticipated: • Basin 5 adjusted to reflect a Return -to -Sewer Ration of 0.75 • Basin 6.adjusted to reflect a Return -to -Sewer Ration of 0.60 • Basin 9 adjusted to reflect a Return -to -Sewer Ration of 0.75 • . Basin 13 adjusted to reflect a Return -to -Sewer Ration of 0.50 • Basin 14 adjusted to reflect a Return -to -Sewer Ration of 0.197 Flows measured for Basins 1 and 4 still conformed to a 0.95 RTS, and as such, flows projected for parcels not measured in the 2009 Wet Weather Flow Study are still assumed to generate wastewater with a RTS of 0.95. Average Dry Weather Wastewater Flow Projection Due to the industrial and built -out nature of the City, future wastewater flows will most likely be from new industrial users, which will be evaluated on a case by case basis. However, in order to estimate the 5-Year, 10-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per arum increase was assumed, consistent with the City's 2005 Urban Wlater.ManagementPlan. Table 3 presents the City's projected ADWF for each time increment. Fable 1 - 2007 Major Water Users in the City of Vernon 1126 622,484 1744 383,328 1 6303-005-030 3049 VERNON AVE 1,073,017 3555 35,625 2017 31,424 1707 156 2 6302-020-038 2522 E 37TH ST 534,535 2050 532,791 1944 1,744 1739 240,231 3 6303-017-006 3316-3376 E 44TH ST 513,909 3304 85,643 3301 188,035 4 6304-011-005 1 4900 E 50TH ST 451,089 2669 451,089 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 4 of 36 Table 1 - 2007 Major Water Users in the Citv of Vernon 5 6302-003-023 2501 E 28TH ST 400,547 1476 400,547 6 6303-002-025 3220 E 26TH ST 363,981 2071 300,391 2070 61,012 2031 2,019 3101 320 1979 240 7 6310-009-019 5215 BOYLE AVE 341,666 3485 328,405 428 7,554 557 5,707 8 6308-018-019 5801 E 2ND ST 270,079 3493 270,079 9 6310-008-007 5383 ALCOA AVE 226,126 3464 226,126 10 6308-007-019 4460 PACIFIC BLVD 202,198 1170 202,198 11 6302-020-041 2727 VERNON AVE 199,296 3537 198,7281975 568 12 6310-027-022 6270 BOYLE AVE. 138,259 3366 90,647 3366 47,612 13 6303-029-900 2828-2970 E 50TH ST 135,839 3597 108,937 6303-029-901 268 26,901 14 6303-019-015 4633 DOWNEY RD 134,488 1682 133,669 1613 820 15 6303-009-007 3501 VERNON AVE 131,027 3420 131,027 16 6302-020-059 3883 SOTO ST 128,756 3406 127,717 3368 1,039 17 6303-001-012 2923 FRUITLAND AVE 127,816 262 127,816 18 6303-012-041 3055 E 44TH ST 114,335 3536 114,335 19 6303-002-021 3270 E 26TH ST 102,626 3525 47,604 3526 47,489 1950 4,455 401 _2,228 1949 850 20 6304-0217049 4215 EXCHANGE AVE 90,602 2271 83,171 2270 7,431 21 6303-007-026 3399 VERNON AVE 88,965 3402 88,965 22 6308-005-009 4553 SEVILLE AVE 84,446 1098 47,356 3242 37,091 23 6304-027-015 4224 DISTRICT BLVD 83,803 2213 83,198 2567 559 2551 45 24 6302-001-038 2750JEWEL AVE 80,124 1865 80,120 1892 4 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 5 of 36 r at'G.' WINNERAim W. - . 25 6302-001-044 2731 SOTO ST 68,441 1758 68,441 26 6308-016-049 2300 E 52ND ST 59,543 3326 59,543 27 6302-007-023 2807 SANTA FE AVE 56,168 3371 56,168 28 6308-005-015 2638 VERNON AVE 53,436 1071 32,807 3593 20,628 29 6310-027-028 5950 ALCOA AVE 53,020 3221 51,471 3173 1,480 3174 70 30 6303-010-041 4317 DOWNEY RD 50,794 375 50,794 31 6310-008-005 5151 ALCOA AVE 50,600 3467 50,600 32 6308-013-044 4510 ALAMEDA ST 50,212 3280 50,212 33 6302-020-057 2750 E 37TH ST 49,038 1508 39,591 3425 9,005 -- 3425 443 34 1 6303-024-007 2959 E 50TH ST 45,700 1150 45,700 35 6302-013-029 2121 E 38TH ST 44,597 3205 44,597 36 6310-002-015 3336 FRUITLAND AVE 43,366 3315 43,366- 37 6308-017-030 5525 SANTA FE AVE 43,179 3574 43,179 - 38 5169-021-003 3225 WASHINGTON BLVD 41,800 3144 38,904 675 2,896 39 6310-002-029 5353-5401 DOWNEY RD 40,712 1964 40,712 40 6303-024-011 2905 E 50TH ST 40,056 2053 40,056 41 6302-003-019 2601 E 26TH ST 39,093 1535 39,093 42 6302-014=013 2323 E 38TH ST 37,853 3038 37,853 43 5169-029-020. 2775 E 26TH ST 34,338 . 640 34,338 44 6303-028-014 5100 BOYLE AVE . 33,322 641 33,322 45 6308-010-017 5075 PACIFIC BLVD 32,978 1343 29,104 543 3,873 46 6304-020-021 4525 DISTRICT BLVD 32,141 2607 28,963 2604 3,178 47 6302-010-013 2910 ROSS. ST 31,248 1866 31,248 48 _ 6304-012-004 4879 FRUITLAND AVE 30,344 2677 30,344 49 6310-027-036 6180 ALCOA AVE 29,500 3150 29,500 50 6303-008-008 3308 BANDINI BLVD 29,088. 3134 16,233 1549 12,8.55 51 6303-016-004 3250 E 44TH ST 28,346 3110 28,346 52 63087015-077 2100 E 49TH ST 28,330 2028 22,213 3616 6,117 53 6310-002-018 3308 FRUITLAND AVE 28,330 961 28,330 U71 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 6 of 36 Table 1 - 2007 Maior Water Users in the Citv of Vernon 0 54 6303-011-047 3420 VERNON AVE 26,883 1671 15,280.3391 11,603 55 6310-027-039 5970/5980 ALCOA AVE 25,914 3175 25,914 56 6303-013-045 2851 E 44TH ST 25,563 1039 25,563 57 6303-005-032 3163 VERNON AVE 23,815 3554 23,815 58 6302-009-038 2622 ALAMEDA ST 23,784 3459 23,784 59 5169-034-019 3305 E 26TH ST 22,567 2041 22,567 60 6304-021-052 4383 EXCHANGE AVE 22,446 2276 22,446 61 6303-009-015 3615 VERNON AVE 22,292 1653 22,292 62 6304-027-005 4955 MAYWOOD AVE 21,919 2317 21,919 63 6302-017-901 4305 SANTA FE AVE 21,799 3461 16,440 1705 3,4202064 1,920 1581 18 64 6308-017-015 2001 E 57TH ST 21,325 1757 21,321 1585 4 65 6303-027-002 3301 FRUITLAND AVE 21,012 962 21,012 66 6303-013-042 2809 E 44TH ST 20,639 1189 20,639 67 6303-007-030 3425 VERNON AVE 19,8Q3 3511 19,598 2047 - 205 68 6302-012-019 2037E 38TH ST 19,077 2123 15,8082123 3,269 69 6308-014-025 1955 E 48TH ST 18,866 3447 18,671 1783 195 70 5169-034-010 3365 E 26TH ST 18,575 1699 18,575 . 71 6308-016-038 5200 ALAMEDA ST 18,241 316 16,9 27 3166 1,314 72 6303-011-049 3141 E 44TH ST 16,979 3412 16,979 73 6308-012-022 2300 VERNON AVE 16,208 630 13,337 1825 2,871 74 6303-026-012 3341 E 50TH ST 16,083 3545 16,083 75 6303-020-010 4700 BOYLE AVE 15,899 722 15,899 76 6308-016-025 2340 E 52ND ST 15,698 1873 15,698 77 6302-009-028 2026 E 27TH ST 15,390 1454 15,390 78 6303-004-035 2822 SOTO ST 15,235 292 15,235 79 6308-018-022 5700 1ST ST 15,190 3608 15,190 80 6308-017-042 2100 E 55TH ST 15,165 3521 15,165 81 6310-027-044, 6033/6063 MALBURG 15,108 3268 15,108 82 6310-004-008 3365 SLAUSON AVE 14,118 3163 1 14,118 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 7 of 36 i aoie -i - z-uu i major water users in the City of Vernon 83 6302-017-024 2045 VERNON AVEd 13,597 583 13,597 84 6310-002-036 5164 ALCOA AVE 13,515 693 13,515 85 6303-011-042 3450 VERNON AVE 13;478 3599 13,478 86 6310-007-003 5800 BOYLE AVE 12,616 3527 12,616 87 6308-009-038 4646 HAMPTON ST 12,454 3478 12,454 3605 10,304 3606 670 88 6303-002-011 2890/3001 SIERRA 11,820 446 393 PINE AVE 591 268 1681 168 3033 16 89 6304-023-010 4309 FRUITLAND AVE 11,480 2283 9,287 2282 2,193 90 6303-006-064 3285 VERNON AVE 11,159 3533 11,_159 91 6308-015-063 4800 ALAMEDA ST 10,083 3571 9,251 3378 832 Total 7,898,892 7, 898 892 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 9 of 36 i agie t - vernon txistmg wastewater Flow by Tributary Basin City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 10 of 36 FI�]C3�n9'kF��a''PSL�7i .7DIVA T�TCTi3�T•Ti�iil�I�f Ti 1 `138 143 149 159 2 19 20 21 22 3 195 202 209 224 4 1,289 1,337 1,384 1,484 5 495 513 531 569 6 199 206 213 229 7 4 5 5 5 8 9 9 9 10 9 578 599 621 665 10 1,246 1,289 1,335 1,433 11 275 284 294 316 12 91 94 97 105 13 215 223 231 247 14 198 206 213 228 15 34 36 37 39 16 276 286 297 318 17 8 9 9 10 18 27 28 29 31 19 22 23 24 25 20 62 64 66 71 21 1 1 1 1 22 8 - 8 9 9 23 50 51 53 58 24 1 75 77 80 86 25 30 32 33 35 Total 5,546 5,744 5,948 6,381 City of Vernon Sewer System. Management Plan Technical Memorandum No. 9 March 19, 2010 Page 11 of 36 Average Dry Weather Wastewater Flow during the Work Week (ADWFWW) Flow data collected and discussed in the 2009 Wet Weather Flow Study shows a significant increase in wastewater flow during the traditional work week, Monday through Friday. To account for this two -tiered flow pattern, ADWF was multiplied by a work week peak factor of 1.17. The result was the ADWF Work Week (ADWFWW) scenario. Peak Dry Weather Wastewater Flow (PDWF) Wastewater flow varies throughout the day in response to personal habits and business operation. Peak Dry Weather Flow (PDWF) accounts for peak usage patterns, and includes estimates of Groundwater Infiltration (GWI). GWI is defined as groundwater entering the collection system through pipe joints and manhole walls due to an aging system or improper construction. The magnitude of GWI depends on the depth of the groundwater table above the pipelines, the percentage of the system submerged, and the physical condition of the system. Variation in groundwater levels in the City is seasonal in nature. The GWI tends to be low during the summer and fall months (dry weather) and increases gradually as the wet weather season progresses. While GWI -is -affected by rainfall, it responds gradually and is not directly related to any one individual rainfallevent. It is assumed that the ADWF and GWI are taken into account in the peak dry weather flow equation. Therefore, no further contingency for these components are necessary. To estimate PDWF, a Peak Dry Weather Factor curve (in cfs) was developed specifically for the - City, utilizing the data collected in the 2009 Wet Weather Flow Study. The 2009 Wet Weather Flow - Study produced sufficient data to derive a peak dry weather curve, and included measured flows for nine (9) sites within the City's sewer service area. Two separate rain events occurred during this study. Any data obtained during these rain events (or within 48 hours of a rain event) was classified as wet weather data. All other data was classified as dry weather data and was analyzed to calculate Average Dry Weather Flow Rates for each flow meter. A Peak Dry Weather Curve was derived by graphing the peaking factor derived from the measured Peak Dry Weather Flow Rates versus the Average Dry Weather Flow Rates for each of the flow monitoring sites. An equation for the Peak Dry Weather Factor (PWWF) was then generated using a "best -fit," exponential curve. This curve is illustrated as the "black" curve in Figure 2, and corresponds to the following recommended Peak Wet Weather Factor, based on ADWFWW in cfs: Peak Dry Weather Factor = 1.30 x (Average Dry Weather Flow during the Work Week)" When available, industrial discharge permits were used to estimate peak dry weather flows. For these parcels, estimates of PDWF were obtained directly from available permits, and not from the City's Peak Dry Weather Factor curve and ADWFWW. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 12 of 36 For purposes of comparison, the Los Angeles Department of Water and Power's (LADWP) Peak Dry Weather Curve, as published in the LADWP Bureau of Engineering Manual — Part F; is also presented. It is worth noting that due to the City's Industrial nature, and predictable usage patterns, measured peaks are substantially lower than those previously calculated utilizing the LADWP Peak Dry Weather Curve. 40 3Z L 3.O IL 2:5 0'- LL 2.0 6 15 �c tv m a. '1.o 0.5 00 Figure 2 - -Peek "law Curves 0 OZ 1 Z 2 2 5 3. 3 5 4 4 5 5' SAS: ;ilverage Dry '�Ileather Fid�r INtsrk U4'eek �<cfs)` Peak Wet Weather Wastewater Flow (PWWF) Peak Wet Weather Wastewater Flow (PPWF) is estimated as Peak Dry Weather Flow (PDWF) plus Rainfall Dependent Infiltration/Inflow (RDI/I). RDI/I is storm water that enters the wastewater collection system in direct response to the intensity and duration of individual rainfall events. RDI/I may recede gradually after a storm; however, any residual flow is considered to be a general increase in GWI. To estimate PWWF, a Peak Wet Weather Factor curve (in cfs) was developedspecifically for the City, utilizing the data collected in the 2009 Wet Weather Flow Study. The 2009 Wet Weather Flow. Study produced sufficient data to derive a peak wet weather curve for the one year storm, and included measured flows for nine (9) sites within the City's sewer service area. Two separate rain City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 13 of 36 events occurred during this study. Any data obtained during these rain events (or within 48 hours of a rain event) was classified as wet weather data. This data was analyzed to calculate Peak Wet Weather Flow Rates for each flow meter. A Peak Wet Weather Curve was derived by graphing the peaking factor derived from the measured Peak Wet Weather Flow Rates versus the Average Dry Weather Flow Rates for each of the flow monitoring sites. An equation for the Peak Wet Weather Factor (P)X7WF) was then generated using a "best -fit," exponential curve. This curve is illustrated as the "green" curve in Figure 2, and corresponds to the following recommended Peak Wet Weather Factor, based on ADWFWW in cfs: Peak Wet Weather Factor = 2.32 x (Average Dry Weather. Flow during the Work Week)-0.079 It is worth noting that due to the City's Industrial and built -out- nature, predictable usage patterns and complete storm drain coverage throughout the City's service area, measured wet weather peaks' are lower, than those dry weather peaks previously calculated utilizing the LADWP Peak Dry Weather Curve. HYDRAULIC MODEL DEVELOPMENT IEC utilized MWH Soft, Inc.'s H2OMap Sewer GIS 8.0, SP 1, Update #3 software to create a wastewater collection system model for the City. The model was used to evaluate existing City owned wastewater facilities and provide recommendations for capsizing. The main components involved in developing the City's sewer hydraulic model are as follows: • Assignment of attribute data to emulate the City's physical facilities • Scenario development for each relevant planning period. • Loading of existing and.projected wastewater flows. The City's most current AutoCAD/GIS database was utilized as the basis for the model infrastructure. All City owned wastewater facilities, excluding laterals, were then input into the hydraulic model from the AutoCAD/GIS database. Invert elevations, length, location and diameters for the approximately 1,000 gravity mains were input into the H2OMap hydraulic model. For each time -increment, four (4) steady state scenarios were created in the hydraulic model to emulate the following: average dry weather flow (ADWF); ADWF during the work week (ADWFWW); peak dry weather flow (PDWF); and peak wet weather flow (PWWF). Consistent with the 2005 Urban WlaterManagement Plan, an annual growth rate of 0.7% was utilized in projecting average daily demand in each time increment. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 14 of 36 HYDRAULIC MODEL CALIBRATION When calibrating a hydraulic model, the best available metered data is utilized to either confirm or correct the results predicted by the model. The City recently completed the 2069 Wet Weather Flow Study, which included measured flows for nine (9) sites within the City's sewer service area. IEC used the measured ADWF, ADWFWW, PDWF and PWWF flows to calibrate the hydraulic model. Table 4 presents the comparison between the results generated with the H20Map steady state scenarios and the City's flow meter data. Based on the results presented in Table 4, the I20Map Sewer Model is adequately calibrated, with 100% of the average flow rates predicted within 10% of average flows measured. A majority of peak flows are also with 10%, with all but one of the remaining locations conservatively predicting higher flows in the model than measured. - IL ® - :§ \cn E 2a k %| ƒ% /E } 07 % / § � m \ £ ) City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 17 of 36 GRAVITY MAIN REPLACEMENT CRITERIA The National Clay Pipe Institute (NCPI) recommends that smaller pipelines (8" and smaller) be designed to .flow at levels not exceeding half-full(d/D=0.50) during peak conditions. For larger pipelines, the tributary area is larger. Local deviation from design wastewater flows tend to balance one another for larger areas, resulting in a closer correlation of actual anddesignwastewater flows. Consequently, the NCPI recommends that these larger wastewater pipelines should be designed for d/D not to exceed 0.75. In analyzing the City's existing wastewater pipelines, it is unnecessary to allow for an excessive factor of safety. This is because the City's wastewater basins are largely built out, and future development patterns are relatively certain. As new major industrial users apply for wastewater service, they will be evaluated on a case -by -case basis, including estimated flow rates and impacts to City -owned wastewater facilities. Therefore, City -owned wastewater pipelines may be flowing at levels above a d/D of 0.50 and still be operating satisfactorily. Remaining pipeline capacity, above d/D = 0.75 has been reserved to handle emergency flows such as I&I beyond that planned for in a design storm, and to provide for ventilation within the pipe. This should not be considered a component of the pipeline capacity. In an effort to account for the City's industrial and built -out nature, and ensure that gravity main segments are replaced due to capacity and flow constraints, the following describes the City's replacement criteria: Minimum velocity: 2 feet per second • Maximum velocity: 10 feet.per second • Maximum Peak Wet Weather Flow depth -to -Diameter d/D = 0.75 • Maximum Peak Dry Weather Flow .depth -to Diameter • d/D = 0.55 for pipes less than 12-inches in Diameter. • All pipes requiring replacement shall be designed in accordance with the City's design criteria. In the event that a gravity main does not.qualify for replacement, but the pipeline immediately upstream. requires upsizing, one additional replacement stipulation may be applicable. The purpose of this replacement stipulation is to insure that pipe -reaches increase in diameter as they progress downstream, and prevent, wherever possible, pipe -reaches from fluctuating up and down in diameter. If a gravity main requires upsizing to a diameter larger than the diameter of the gravity main(s) immediately downstream in the same pipe -reach, and the downstream pipe(s) are less than 750 ft in length before conveying flow to a gravity main of equal or larger diameter than the diameter recommended for the deficient upstream gravity main, then the downstream gravity main(s) of less than 750 ft shall be upsized to the same diameter of the upstream pipe. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 18 of 36 Gtfr1.VITY MAIN DESIGN CRITERIA In analyzing a wastewater system, it is necessary to derive standards. regarding the amount of flow that may be efficiently conveyed. A set of standards for the City's gravity mains was developed, based on the City's standard criteria, typical industry standards and conversations with City Staff. All gravity main segments which satisfy the City's replacement criteria, shall be upsized in accordance with this design criteria. In an effort to provide reliable gravity sewer service while minimizing excessive wear through the City's gravity mains, sanitary sewers shall be designed sling to the following design criteria: • Pipes less than 12-inches in diameter: 1/2 full at peak flow • Pipes 12-inches or greater in diameter: 3/4 full at peak flow • Minimum velocity: 2 feet per second • Maximum velocity: 10 feet per second • Manning's n: 0.013 • Minimum pipe replacement diameter 8-inches GRAVITY MAIN UNIT COSTS Unit costs used to develop capital cost estimates for proposed facilities were developed using the Engineering News Record Construction Cost Index (ENR-CCI) 20-city national average, and recently completed projects by IEC of a similar nature. These estimates are based on the best available data at the time of this report; however, since prices of materials and labor fluctuate with time, new estimates should be obtained during pre -design for proposed facilities to confirm budget amounts. Recent market trends have indicated substantial volatility in the price of construction materials such as steel and concrete. These factors, coupled with the high level of similar work currently being performed, have on occasion resulted in a generally unpredictable bidding environment. The ENR-CCI is an inflation index used to adjust prices from one time period to another. The cost estimates presented in this report are based upon an ENR-CCI cost index of 8,596 for October 2009. Costs estimated herein for recommended facilities should be adjusted in the future either by making new estimates or by comparing the future ENR-CCI index to 8,596. A factor of 20 percent of total construction cost has been used for engineering and administration, which includes, but is not limited to the following: • Planning and design reports • Design • CEQA compliance • Permits City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 19 of 36 • Surveying • Service during construction (submittals, as-builts) • Inspection A factor of 30 percent has been added for contingencies. These engineering, administration and contingency factors have been incorporated into all unit costs. Estimates of probable. capital costs provided represent Order of Magnitude level costs as established by the American Association of Cost Engineers (AACE) and:represent an accuracy of +50% to -30%. Table 5 presents the gravity main unit costs used in developing capital costs. i ame a - gravity main unit costs 10 s" V�� $250 12 $275 14 $310 15 $315 16 $335 18 $360 21 $420 24 $455 ate: Units costs include Engineering, Legal, Administration, and Contingencie City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 20 of 36 HYDRAULIC MODELING RESULTS Under existing flow conditions, 29 gravity main segments (measured manhole to manhole) satisfy the replacement criteria in peak conditions. Of these, 22 gravity main segments satisfy the replacement criteria in peak dry conditions due to capacity. The remaining 7 gravity mains segments have been identified to ensure that pipe -reaches increase in diameter as they progress downstream, and prevent, wherever possible, pipe -reaches from fluctuating up and down in diameter. Table 6 presents a summary of the 29 gravity main segments recommended for upsizing in the Existing time increment, for a total of 6,997 linear feet. Table 6 - Summary of Existing Pipeline Recommendations 8 8 2,239 10 6 1,334 12 4 697 15 4 722 16 7 2,006' TOTAL 29 6,997 Average dry weather flow (ADWF), average dry weather flow for the work week (ADWF VVV), peak dry weather flow (PDWF), peak wet weather flow (PWWF), the corresponding peaking factors, and resulting depth -to -Diameter ratio WD) were projected for each pipeline in the Existing time increment. For the 29 pipelines recommended for upsizing, recommended replacement diameters, and their corresponding new depth -to -Diameter ratios, were calculated to satisfy the City's design criteria. Hydraulic modeling results, along with recommended replacement diameters, for the 29 pipelines in the Existing time increment are presented in Table 7. Tables 8, 9 and 10 present similar findings for the 5-Year, 10-Year and 20-Year (Planning Horizon) time - increments, respectively. An additional 5 gravity main segments satisfy the City's replacement criteria in the 10-Year time increment, with a total of 610 linear feet. Figures 4 to 9 illustrate all 34 gravity main. segments recommended for upsizing. q� .. Lo Lo Lo L Lo Lo LO (C) rn O O o co CD co " O co 00 rn rn O M (D O (D Lf) Lo M Lo CO C4 CO Lo Lo Lo f- , t V' M co 0 0 0 0 0 0 0 0 0 0 0 0 0 O O 0 0 0 0 0 s N N N N CD M (D M co 00 00 00 It It V 00 00 00 N N ' O O O O O O O O O O O O O O It Lo It t` LO I~ (D I- (D I` 'It t~ NP-- LO O O O m O L() 00 ti O r- �� ����"���('� � •- c- r- � c- r- �- O O O O O O O O �- 0 0 0 0 s O O O T N N N N c- r CO LO T co M M �t V O O O N N N N N � a M M M M N . N 2,,., b 0 Cl 0 O 0 O 0(D O O O O 0 O 0 co 0 Ct 0 It 0 LO O LO T LO T LO c- LO O Ln N N (D Lo (D U)- - � LO LO U) LO q d' 'IT tt M M(D T r T T. 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As part of the City's review of the application a determination is made if the City's sewer system has sufficient capacity for the applicants discharge. For significant ;discharges a flow study is performed. A recent analysis by City staff has determined that in many of .the reaches where upsizing the sewer main is recommended large industrial waste dischargers are exceeding their permitted discharge rates. If these dischargers were required to reduce their flow to the rate which is permitted it could potentially reduce the need for upsizing the sewer main. Section .21.4.6 if the Vernon Municipal Codes states, "It shall be unlawful for any person to discharge any industrial wastewater in a manner such that the peak flow rate exceeds the designed capacity ofi:the City sewer, or the peak flow rate approved by the City Engineer in a.persons industrial wastewater discharge permit, or the peak flow rate causes adverse hydraulic conditions . within the sewer as determined by the City Engineer. Any design, construction, and administrative expenses incurred in an effort to accommodate excessive flow rates in the City sewer system shall be borne by the person who discharged the excessive flow of industrial wastewater." Based on this. code section. the City has authority to require a reduction in flow from businesses which are violating their Sanitation District permit. Therefore, as an alternative to upsizing a sewer line the City may impose flow reductions on industrial waste dischargers to reduce hydraulic capacity concerns. RECOMMENDED CAPITAL IMPROVEMENT PLAN IEC has generated a phased and prioritized Wastewater Capital Improvement. Plan. Cost estimates for each project have been developed based upon the proposed replacement diameter, the estimated length of each project, and the unit costs presented in Table 5. The minimum cost for a gravity main segment was estimated to be $20,000. Estimates of probable capital costs provided herein represent "Conceptual" level costs as established by the American Association of'Cost Engineers.(AACE) and represent an accuracy of +50%;to -30%. Cost estimates should be verified and updated during the pre -design phase of each project. Table 11 presents the capital improvement plan with estimated probable costs of $2.3 Million for Fiscal Years 2009-2013, and $0.2 Million for Fiscal Years 2019-2023, totaling $2.5 Million. As an alternative. to"upsizing the capacity of a sewer line the City may opt to require a reduction in flow of an industrial waste discharger to such an extent that the existing sewer line will have sufficient capacity to meet the design criteria set forth. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 ° March 19, 2010 Page 30 of 36 r- Table 11' RecommencWd Gravity Main Capital Improvement Plan GM1 8 203 12 $275 $65,922 GM2 8 129 12 $275 $35,605 GM3 8 326 12 $275 $89,518 ^ GM4 8 325 12 $275 $89,467 GM5 10 175 16 $335 $58,732 GM6 10 371 16 $335 $124,324 GM7 10 363 16 $335 $121,526 GM8* 12 35 16 $335** $20,000 GM9 16 282 18 $360 $101,541 GM10 16 375 18 $360 $134,954 GM11 16 328 18 $360 $117,963 GM12 16 324 18 $360 $116,735 GM13 12 222 14 $310 , $68,690 GM14 12 221 14 - $310 $681465 GM15 12 219 14 $310 -$68,022 GM16 16 130 18 $360 $46,955 GM17* 16 267 18 $360 $96,122 GM18** 16 300 18 $360 $107,936 GM19 8 127 12 $275 $35,024 GM20 8 361 12 $275 $99,230 GM21 8 356 12 $275 $97,811 GM22 8 411 12 $275 $113,064 GM23 15 290 18 $360 $104,465 GM24* 15 219 18 $360 $78,990 GM25 15 207 18 $360 $74,375 GM26* 15 6 18 $360** $20,000 GM32 10 23 12 $275** $20,000 GM33* 10 201 12 $275 $55,257 GM34* 10 200 12 $275 $55;106 "GM 8 184 8 12 $275 $50,728 GM28 8 114 12 _ $275 $31,273 GM29 8 265 12 $275 $72,990 GM30 8 39 12 $275 $10,695 GM31 * 8 8 12 $275** $20,000 Total 7,607 $2,461,484 9 - Gravity main upsized due to diameter fluctuation criteria; not capacity ** - Minimum cost estimate of $20,000 per gravity main segment utilized IL c mLO C o r E ' o o J; { a` a _m c a �a C:. 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MEMO Infrostrrtrture Engineering Corporation CITY OF VERNON SEWER SYSTEM MANAGEMENT PLAN VOLUME II - APPENDIX "0 rr SYSTEM EVALAUTIONAND CAPACITY ASSURANCE PLAN Date: March 19, 2010 FINAL October 16, 2009 FINAL DRAFT September 4, 2009 -2nd DRAFT September 19, 2008 —1s' DRAFT Subject: 2008-09 SEWER SYSTEM HYDRAULIC ANALYSIS Prepared By: Genevieve Chambliss, E.I.T.; Jeff Kirshberg Ph.D., P.E. (C67882) Reviewed By: Scott Humphrey, P.E. (C64206) EXECUTIVE SUMMARY In support of the Sewer System Management Plan (SSMP), Infrastructure Engineering Corporation (IEC) has performed a hydraulic analysis of the wastewater collection system in the City of Vernon (City). IEC developed wastewater flow projections for the Existing, 5-Year, 10-Year and the 20- Year (Planning Horizon) time increments. As summarized in Table 3, the City's Existing average dry weather flow of 5,546 gpm is anticipated to increase by 0.7% per annum, reaching 6,381 gpm in the`20-Year time -increment. In order to estimate the 5-Year, 1 0-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per anum increase was assumed, consistent with the City's 2005 Urban lhater Management Plan. The City will revise their Urban Water Management Plan in 2010, and re-evaluate the projected growth of water demands as part of the plan's development. As projected demands are anticipated to reflect Governor Schwarzenegger'spending 20x2020 legislation, the City's water demands, and respective wastewater projections, may decrease as much as20% in order to achieve statewide compliance goals. IEC utilized MWH Soft, Inc.'s H2OMap Sewer software to create a wastewater collection system model for the City. The model was used to evaluate existing City owned wastewater facilities and provide recommendations for upsizing. The City recently completed the 2009 Wet Weather Flow Study, which included wastewater "flow data obtained for (10) sites. Table 4 presents the comparison between the results generated with the H2OMap steady state scenarios and the City's flow meter data, illustrating a successful calibration effort. Under Existing flow conditions, 29 gravity main segments (measured manhole to manhole) satisfy. the City's replacement criteria, for a total of 6,997 linear feet. An additional 5 gravity mains segments satisfy the City's replacement criteria in the 10-Year time increment, with a combined additional length of 610 ft. All 34 gravity main segments have been recommended for upsizing in compliance with the City's design criteria in the 20-Year (Planning Horizon) time -increment. 5242 Katella Ave, Suite 205, Los Alamitos, California 90720 T 562.344.9060 F 562.344.9055 www.iecorporation.com 11 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 2 of 36 These gravity main segments, illustrated in Figures 4 through 12, have been included in the City's proposed Wastewater Capital Improvement Plan (CIP), with estimated probable costs of $2.3 Million for Fiscal Years 2009-2013 and $0.2Million for Fiscal Years 2019-2023, totaling $2.5 Million. Estimated probable costs provided represent Order of Magnitude level costs as established by the American Association of Cost Engineers (RACE) and represent an accuracy of +50% to = 30%. WASTEWATER FLOW PROJECTIONS As summarized in Table 3, the City's Existing average dry weather flow of 5,546 gpm is anticipated to increase by 0.7% per annum, reaching 6,381 gpm in the 20-Year time -increment. In order to estimate the 5-Year, 10-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per anum increase was assumed, consistent with the City's 2005 Urban WlaterManagementPlan: The City will revise their Urban Water Management Plan in 2010, and re-evaluate the projected growth of water demands as part of the plan's development. As projected demands are anticipated to reflect Governor Schwarzenegger's pending 20x2O2O legislation, the City's water demands, and respective wastewater projections, may decrease as much as 20% in order to achieve statewide compliance goals. Average Dry Weather Wastewater Flow (ADWF) Average dry weather wastewater flow (ADWF), or base flow, is domestic (or sanitary) wastewater flow from residential, commercial, and institutional (schools, churches, hospitals, etc) sources, plus industrial wastewater. The wastewater flow is affected by population and land uses in an area. Wastewater flow varies throughout the day in response to personal habits and business operation. To calculate the City's ADWF, each parcel's 2007 average daily water demand multiplied by an estimated return -to -sewer ratio. The City's 2007 water billing records were analyzed, and a list of the Major Water Users, with average daily water demands greater than 10,000 gpd, was compiled. As presented in Table 1, there are 91 Major Users accounting for 7.9 mgd, or 89%, of Vernon's total water demand. Water bills were assigned to individual parcels, as illustrated in Figure 1. For those parcels serviced by the California Water Company, in sewer basins 14,15,17,18, 20, 21 and 22, water billing records were not available. Each parcel's average daily water,demand was then multiplied by corresponding return -to -sewer (RTS) ratio, based on land use. Initially, for industrial:and residential parcels, RTS ratios of 0.95 and 0.65 were utilized respectively, with the exception of the Seven-up Bottling Company. For this parcel a RTS ratio of 0.2 was used, to account for the quantities of water consumed' in their beverage preparation. For those parcels serviced by the California Water Company, available wastewater flow meter data was utilized to estimate an ADWF industrial duty factor of395 gpd/acre. Additionally, when available, average dry weather flows were obtained from wastewater discharge permits. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 3 of 36 For the basins `monitored in the City's recent 2009 Wet Weather Flow Study, estimated average daily flows were compared to those recorded in the study, as presented in Table 4 in a subsequent section. In addition to confirming the 395 gpd/acre estimate for California Water Company customers, RTS were specifically altered. for the following basins as monitordata revealed lower base flows than previously anticipated: • Basin 5 adjusted to reflect a Return -to -Sewer Ration of 0.75 • Basin 6 adjusted to reflect a Return -to -Sewer Ration of 0.60 • Basin 9 adjusted to reflect a Return -to -Sewer Ration of 0.75 • Basin 13 adjusted to reflect a Return -to -Sewer Ration of 0.50 • Basin 14 adjusted to reflect a Return -to -Sewer Ration of 0.197 Flows measured for Basins 1 and 4 still conformed to a 0.95 RTS, and as such, flows projected for parcels not measured in the 2009 Wet Weather Flow Study are still assumed to generate wastewater with a RTS of 0.95. Average Dry Wleather Wastewater Flow Projection Due to the industrial and built -out nature of the City, future wastewater flows will most likely be from new industrial users, which will be evaluated on a case by case basis. However, in order to estimate the 5-Year, 10-Year and 20-Year (Planning Horizon) average daily wastewater flows, a 0.7% per anum increase was assumed, consistent with the City's 2005 Urban WlaterManagement Plan. Table 3 presents the City's projected ADWF for each time increment. I Table 1 - 2007 Major Water Users in the City of Vernon 5 6302-003-023 2501 E 28TH ST 400,547 1476 400,547 6 6303-002-025 3220 E 26TH ST 363,981 2071 300,391 2070 61,012 2031 2,019 3101 320 1979 240 7 6310-009-019 5215 BOYLE AVE. 341,666 3485 328,405 428 7,554 557 5,707 8 6308-018-019 5801 E 2ND ST 270,079 3493 270,079 9 6310-008-007 5383 ALCOA AVE 226,126 3464 226,126 10 6308-007-019 4460 PACIFIC BLVD 202,198 1170 202,198 11 6302-020-041 2727 VERNON AVE 199,296 198, 728 1975 975 568 12 6310-027-022 6270 BOYLE AVE 138,259 3366 90,647 3366 47,612 13 6303-029-900 2828-2970 E 50TH ST 135,839 3597 108,937 6303-029-901 268 26,901 14 6303-019-015 4633 DOWNEY RD 134,488 1682 133,669 - 1613 820 15 6303-009-007 3501 VERNON AVE 131,027 3420 131,027 16 6302-020-059 3883 SOTO ST 128,756 3406 127,717 3368 - 1,039 17 6303-001-012 2923 FRUITLAND AVE 127,816 262 127,816 18 6303-012-041 3055 E 44TH ST 114,335 3536 114,335 19 6303-002-021 3270 E 26TH ST 102,626 3525 47,604 3526 47,489 1950 4,455 401 2,228 1949 _ 850 20 6304=021-049 4215 EXCHANGE AVE 90,602 2271 83,171 2270 7,4341 21 6303-007-026 3399 VERNON AVE 88,965 3402 88,965 22 6308-005-009 4553 SEVILLE AVE 84,446 1098 47,356 3242 37,091_ 23 6304-027-015 4224 DISTRICT BLVD 83,803 2213 83,198 2567 - 559 2551 45 24 6302-001-038 2750 JEWEL AVE ` 80,124 1865 80,120 1892 4 Table 1- '2007 Major Water Users in the City of Vernon 54 6303-011-047 3420 VERNON AVE 26,883 1671 A�rera . . 15,280 3391 11,603 55 6310-027-039 5970/5980 ALCOA AVE 25,914 3175 25,914 56 6303-013-045 2851 E 44TH ST 25,563 1039 25,563 57 6303-005-032 3163 VERNON AVE 23,815 3554 23,81`5 58 6302-009-038 2622 ALAMEDA ST 23,784 3459 23,784 59 5169-034-019 3305 E 26TH ST 22,567 2041 22,567 60 6304-021-052 - 4383 EXCHANGE AVE 22,446 2276 22,446 61 6303-009-015 3615 VERNON AVE 22,292 1653 22,292 62 6304-027-005 4955 MAYWOOD AVE 21,919 2317 21,919 63 6302-017-901 4305 SANTA FE AVE 21,799 3461 16,440 1705 3,420 2064 1,920 1581 18 64 6308-017-015 2001 E 57TH ST 21,325 185 21,321 1585 4 4 65 6303-027-002 ` 3301 FRUITLAND AVE 21,012 962 21,012 66 6303-013-042 2809 E 44TH ST 20,639 1189 20,639 67 6303-007-030 3425 VERNON AVE 19,803 3511 19,598 2047 205 68 6302-012-019 2037 E 38TH ST 19,077 2123 15,808 2123 3,269 69 6308-014-025 1955 E 48TH ST 18,866 3447 18,671 1783 105 70 5169-034-010 3365 E 26TH ST 18,575 1699 18,575 71 6308-016-038 5200 ALAMEDA ST 18,241 3167 . 16,927' 3166 1,314 72 6303-01`1-049 3141 E 44TH ST 16,979 3412 16,979 73 6308-012-022 2300 VERNON AVE 16,208 630 13,337' 1825 2,871 74 6303-026-012 3341 E 50TH ST 16,083 3545 16,083 75 6303-020-010 4700 BOYLE AVE 15,899 722 15,899- 76 6308-016-025 2340 E 52ND ST 15,698 1873 15,698 77 6302-009-028 2026 E 27TH ST 15,390 1454 15,390 78 6303-004-035 2822 SOTO ST 15,235 292 15,235 79 6308-018-022 ` ; 5700 1ST ST 15,190 3608 15,190 80 6308-017-042 2100 E 55TH ST 15,165 3521 ` 15,165 81 6310-027-044 6 033/6063 MALBURGWY15,108 3268 15,108. 82 6310-004-008 3365SLAUSON AVE 14,118 3163 14,118 v City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 7 of 36 N C ti N N c 41 rn. `) " j{ AL, 141 LL If . /�F ,`!� I� _. �i'`• .' r�%`. '` /•.,�, _ mil' � ,> is I IN f {. f ! sr L J p nlIV f. 47 Ok 00 to II / ,s 1 i d toco 00 in v:. cq Tj F I { fr co Lij I l T 11 7T i _ i ir , n I Acq �._ \ I T,l I I I t 1 10 g fi co F rah { -- � I_ i� z s - ; j o 0 T CO I � r � . City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 9 of 36 Table 2 - Vernon Existinq Wastewater Flow by Tributary Basin City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 10 of 36 Table 3 - Wastewater Flow Projections by Basin 1 i��eafter 138 'P _ , 143 nether 149 ar Average >"aw r pt 159 2 19 20 21 22 3;` 195 202 209 224 4 1,289 1,337 1,384 1,484 5 495 513 531 569 6 199 206- 213 229 7 4 5 5 5 8 9 9 9 10 9 578 599 621 665 10 1,246 - 1,289' 1,335 1,433 11' 275 284 294 316 12 91 94 97 105 18 215 223 231 247 14 198 206 213 228 15 34 36 37 39 16 276 286 297 _ . 318 1.7 8 9. 9 10 18 27 28 29 ' 31 19. 22 23 24 25 20 62 64 66 71 21 1 1 1 1 22 8 8 9 9 23 50 51 53 58 24 75 77 80 86 25 30 32 33 35 Total 5,546 5,744 5,948 6,381 City of Vernon Sewer System. Management Plan Technical Memorandum No. 9 March 19, 2010 Page 11 of 36 Average Dry Weather Wastewater Flow during the Wlork Week (ADWFWW) Flow data collected and discussed in the 2009 Wet Weather Flow Study shows a significant increase in wastewater flow during the traditional work week, Monday through Friday. To account for this two -tiered flow pattern, ADWF was multiplied by a work week peak factor of 1.17. The result was the ADWF Work Week (ADWFWW) scenario. Peak Dry Weather Wastewater Flow (PDWF) Wastewater flow varies throughout the day in response to personal habits and business operation. Peak Dry Weather Flow (PDWF) accounts for peak usage patterns, and includes estimates of Groundwater Infiltration (GWI). GWI is defined as groundwater entering the .collection system through pipe joints and manhole walls due to an aging system or improper construction. The magnitude of GWI depends on the depth of the groundwater table above the pipelines, the percentage of the system submerged, and the physical condition of the system. Variation in groundwater levels in the City is seasonal in nature. The GWI tends to be low during the summer and fall months (dry weather) and increases gradually as the wet weather season progresses. While GWI is affected by rainfall, it responds gradually and is not directly related to any one individual rainfall event. It is assumed that the ADWF and GWI are taken into account in the peak dry weather flow equation. Therefore, no further contingency for these components are necessary. To estimate PDWF, a Peak Dry Weather Factor curve (in cfs) was developed specifically for the City, utilizing the data collected in the 2009 Wet Weather Flow Study. The 2009 Wet Weather Flow Study produced sufficient data to derive a peak dry weather curve, and included measured flows for nine (9) sites within the City's sewer service area. Two separate rain events occurred during this study. Any data obtained during these rain events (or within 48 hours of a rain event) was classified as wet weather data. All other data was classified as dry weather data and was analyzed to calculate Average Dry Weather Flow Rates for each flow meter. A Peak Dry Weather Curve was derived by; graphing the peaking factor derived from the measured Peak Dry Weather Flow Rates versus the Average Dry Weather Flow Rates for each of the flow monitoring sites. An equation for the Peak Dry Weather Factor (PWWF) was then generated' using a "best -fit," exponential curve. This curve is illustrated as the "black" curve in Figure 2, and corresponds to the following recommended Peak Wet"Weather Factor, based on ADWFWW in cfs: Peak Dry Weather Factor 1.30 x (Average Dry Weather Flow during the Work Week)-o.ta When available, industrial discharge permits were used to estimate peak dry weather flows. For these parcels, estimates of PDWF were obtained directly from available permits, and not from the City's Peak Dry Weather Factor curve and ADWFWW. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 12 of 36 , For purposes of comparison, the Los Angeles Department of Water and Power's (LADWP) Peak Dry Weather Curve, as published in the LADWT Bureau of Engineering Manual -Part F; is also presented. It is worth noting that due to the City's Industrial nature, and predictable usage patterns, measured peaks are substantially lower than those previously calculated utilizing the LADWPPeak Dry Weather Curve. Figure Pak Flaw Curves 40 — ----- -- - -- — -- - —T_ _ -- ---- ------ - rr 3-5° _ L 3.0 v LADWP PDWF Factor = 2.64 x (ADWFWW)'0•o95 IL 2 C U- //{�_ t City PWW' F Fagtot - 2:32 X 0 079 { ` 1.5 tt.. t.o City P1 W Factor 1.31? {A[3UVFW�I4!} a=� ' 05 2 :5 15:5`:� 6 Average 1)q, Wet g*tierFI�.W;1tVt rtt 4 ieek cfs.} Peak Fet Feather Wastewater Flow (PFWF) Peak Wet Weather Wastewater Flow (PPWF) is estimated as Peak Dry Weather Flow (PDWF) plus Rainfall Dependent Infiltration/Inflow (RDI/I). RDI/I is storm water that enters the wastewater collection system in direct response to the intensity and duration of individual rainfall events. RDI/I may recede gradually after a storm; however, any residual flow is considered to be a general increase in GWI. To estimate PWWF, a Peak Wet Weather Factor curve (in cfs) was developed specificallyfor the City, utilizing the data collected in the 2009 Wet Weather Flow` Study. The 2009 Wet Weather Flow Study produced sufficient data to derive a peak wet weather curve for the one-year storm, and included measured flows for nine (9) sites within the City's_sewer service area. Two separate rain City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 13 of 36 events occurred during this study. Any data obtained during these rain events (or within 48 hours of a rain event) was classified as wet weather data. This data was analyzed to calculate Peak Wet Weather Flow Rates for each flow meter. A Peak Wet Weather Curve was derived by graphing the peaking factor derived from the measured Peak Wet Weather Flow Rates versus the Average Dry Weather Flow Rates for each of the flow monitoring sites.. An equation for the Peak Wet Weather Factor (PWWF) was then generated using a "best -fit," exponential curve. This curve is illustrated as the "green" curve in Figure 2, and corresponds to_the following recommended Peak Wet Weather Factor, based on ADWFWW in cfs: Peak Wet Weather Factor 2.32 x (Average Dry Weather Flow during the Work Week)'" It is worth noting that due to the City's Industrial and built -out nature, predictable usage patterns and complete storm drain coverage throughout the City's service area, measured wet weather peaks are lower than those dry weather peaks previously calculated utilizing the LADWP Peak Dry Weather Curve. HYDRAULIC MODEL DEVELOPMENT IEC utilized MWH Soft, Inc.'s H2OMap Sewer GIS 8.0, SP 1, Update #3 software to create a wastewater collection system model for the City.. The model was used to evaluate existing City owned wastewater facilities and provide recommendations for upsizing. The main components involved in developing the City's sewer hydraulic model are as follows: •. Assignment of attribute data to emulate the City's physical facilities. • Scenario development for each relevant planning period. • Loading of existing and projected wastewater flows. The City's most current AutoCAD/GIS database was utilized as the basis for the model infrastructure. All City owned wastewater facilities, excluding laterals, were then input into the 'hydraulic model from the AutoCAD/GIS database. Invert elevations, length, location and diameters for the approximately 1,000 gravity mains were input into the H2OMap hydraulic model. For each time -increment, four (4) steady state scenarios were created in the hydraulic model to emulate the following: average dry weather flow (ADWF); ADWF during the work week (ADWFWVV); peak dry weather flow (PDWF); and peak wet weather flow (PWWF). Consistent - with the 2005 Urban llaterManagementPlan, an annual growth rate of 0.7% was utilized in projecting average daily demand in each tithe increment. o 00000000 c- (D O u O LOLOOO N M H.L CA M O N M N M I� N O LO 'N I� I-- I� CO N M � O to (D O r- O 00 M 00 O N £` O N (D �' 0 0 I` I'- V M LOU LO I, C% O LO co co (D N (D O 00 (0 M I� m N N cM (0 Ox. a) M 00 00 00 CA CD LL. N CA . M In O O I— -N LO d t _p -- IT IT NaLo O (D O LO M_ y- O � 07) O ++ am 7 Ce) N 0) tN (D L ( D N � LL L rR. 0 N _ d U)OC) (D c) Lo I-- M 0 O I` O 't O ,M CA O t LO N CD N N M C N w, 3 I� Co 00 N 00 � IT O N � N LO � 3 d G LO O O In O d• Lf) d• N L M N N U � { ,. er p c Q c d .c U m m M N (0 Q 0 (n (a - C m m N,0 1—o p '3 ,N cj A) N v) m 0 m s d `') O a) O Co O O O qt N Ri n a 'mot in (D O M c}' (D O .. N o ..1 EL LL 'i co to E r2, r N O LLAI, 11 z O 04 /,� !If / I f o 6 �,ar.� 1 3�tr i,q f -- I j T Y LL Ei ti I fi 1 i „ F I F1 LL `---7 �! ell / / -... i �I ! � ,. f, —. `y it j it -. .._ .. l.i j_ C J - c 'o 1-� i - it�lA'pY y U U AL i� tF i ,. _ v City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 17 of 36 GRAVITY MAIN REPLACEMENT CRITERIA The National Clay Pipe Institute (NCPI) recommends that smaller pipelines (8" and smaller) be designed to flow at levels not exceeding half -full (d/D=0.50) during peak conditions. For larger pipelines, the tributary area is larger. Local deviation from design wastewater flows tend to balance one another for larger areas, resulting in a closer correlation of actual and design wastewater flows. Consequently, the NCPI recommends that these larger wastewater pipelines should be designed for a d/D not to exceed 0.75. In analyzing the City's existing wastewater pipelines, it is unnecessary to allow, for an excessive : factor of safety. This, is because the City's wastewater basins are largely built out, and future development patterns are relatively certain. As new major industrial users apply for wastewater service, they will be evaluated on a case -by -case basis, including estimated flow rates and,impacts to City -owned wastewater facilities. Therefore, City -owned wastewater pipelines may be flowing at levels above a d/D of 0.50 and still be operating satisfactorily. Remaining pipeline capacity, above d/D = 0.75 has been reserved to handle emergency flows such as I&I beyond that planned for in a design storm, and to provide for ventilation within the pipe. This should not be considered a component of the pipeline capacity. In an effort to account for the City's industrial and built -out nature, and ensure that gravity main segments are replaced due to capacity and flow constraints, the following describes the City's replacement criteria: • Minimum velocity: 2 feet per second • Maximum velocity: 10 feet per second • Maximum Peak Wet Weather Flow depth -to -Diameter d/D = 0.75' • Maximum Peak Dry Weather Flow depth -to Diameter d/D = 0.55 for pipes less than 12-inches in Diameter. • All pipes requiring replacement shall be designed in accordance with the City's design criteria. In the.event that a gravity main does not qualify for replacement, but the pipeline immediately upstream requires upsizing, one additional replacement stipulation may be applicable. The purpose of this replacement stipulation is to insure that pipe -reaches increase in diameter as they progress downstream, and prevent, wherever possible, pipe?reaches from fluctuating up and down in diameter. If a gravity main requires upsizing to a diameter larger than the diameter of the gravity main(s) immediately downstream in the same pipe -reach, and the downstream pipe(s) are less than 750 ft in length before conveying flow to a gravity main of equal or larger diameter than the diameter recommended for the deficient upstream gravity main, then the downstream gravity main(s) of less than 750 ft shall be upsized to the same diameter of the upstream pipe. Technical Memorandum No. 9 March 19, 2010 Page 18 of 36 GRAVITY MAIN DESIGN CRITERIA In analyzing a wastewater system, it is necessary to derive standards regarding the amount of flow that may be efficiently conveyed. A set of standards for the City's gravity mains was developed, based on the City's standard criteria, typical industry standards and conversations with City Staff. All gravity main segments which satisfy the City's replacement criteria, shall be upsized in accordance with this design criteria. In an effort to provide reliable gravity sewer service while minimizing excessive wear through the City's gravity mains, sanitary sewers shall be designed according to the following design criteria: • Pipes less than 12-inches in diameter: 1/2 full at peak flow • Pipes 12-inches or greater in diameter: 3/4 full at peak flow • Minimum velocity: 2 feet per second • Maximum velocity: 10 feet per second • Manning's n: 0.013 • Minimum pipe replacement diameter' 8-inches GRAVITY MAIN UNIT COSTS Unit costs used to develop capital cost estimates for proposed facilities were developed using the Engineering News Record Construction Cost Index '(ENR-CCI) 20-city national average, and recently completed projects by IEC of a similar nature. These estimates are based on the best available data at the time of this report; however, since prices of materials and labor fluctuate with time, new estimates should be obtained during pre- design for proposed facilities to confirm budget amounts. Recent market trends have indicated substantial volatility in the price of construction materials such as steel and concrete. These factors, coupled with the high level of; similar work currently being performed, have on occasion resulted in a generally unpredictable bidding environment: The ENR-CCI is an inflation index used to adjust prices from one time period to another. The cost estimates presented in this report are, based upon an ENR-CCI cost index of 8,596 for October 2009. Costs estimated herein for recommended facilities should be adjusted in the future, either by making new estimates or by comparing the future ENR-CCI index to 8,596. A factor of 20 percent of total construction cost has been used for engineering and administration, which includes, but is not limited to the following: • Planning and design reports • Design • CEQA compliance • Permits City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 19 of 36 •- Surveying - - - - • Service during construction (submittals, as-builts) • Inspection A factor of 30 percent has been added for contingencies. These engineering, administration and contingency factors have been incorporated into all unit costs. Estimates of probable capital costs provided representOrder of Magnitude level costs as established by the American Association of Cost Engineers (AACE) and represent an accuracy of +50% to -30% . Table 5 presents the gravity main unit costs used in developing capital costs, City of Vernon, Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 20 of 36 HYDRAULIC MODELING RESULTS Under existing flow conditions, 29 gravity main segments (measured manhole to manhole) satisfy the replacement criteria in peak conditions. Of these, 22 gravity main segments satisfy the replacement criteria in peak dry conditions due to capacity. The remaining 7 gravity mains segments have been identified to ensure that pipe -reaches increase in diameter as they progress downstream, and prevent wherever possible, pipe -reaches from fluctuating up and down in diameter. Table 6 presents . -a summary of the 29 gravity main segments recommended for upsizing in the Existing time increment, for a total of 6,997 linear feet. Average dry weather flow (ADWF), average dry weather flow for the work week (ADWFDWW, peak dry weather flow (PDWF), peak wet weather flow (PWWF), the corresponding peaking factors,; and resulting depth -to -Diameter ratio (d/D) were projected for each pipeline in the Existing time increment. For, the, 29 pipelines recommended for upsizing, recommended replacement diameters, and their corresponding new depth -to -Diameter ratios, were calculated to satisfy the City's design criteria. Hydraulic modeling results, along with recommended replacement diameters, for the 29 pipelines in the Existing time increment are presented in Table 7. Tables 8, 9 and 10 present similar findings for the 5-Year, 10-Year and 20-Year (Planning Horizon) time - increments, respectively. An additional 5 gravity main segments satisfy the City's replacement criteria in the 10-Year time increment, with a total of 610 linear feet. 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Ln m N N N N M CO, N N N N N N LO Ln CO 04 LO LO LO LO N I` It 'It O O O 0 0 0 0 0' CD 0 0 O I-- 00 00 In Ln o0 00 00 (0 O (0 CO (O (q (fl N N N N N cM Cl? . M 0 0 0 0 0 O O O' N N N N (0 (0 0 10 (O .LO LO LO T N N N D O O O O O O O r d d v d t Ln . 0 Ln O o O N -iV N N •- � � � •- N N N 0 0 0 0 0 O O O N N N N M O N N N LO � . LO r, LO � LO CO 00 00 00 00 O r, O � o � * * x V *1 City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 29 of 36 INDUSTRIAL WASTE FLOW REDUCTIONS The Sanitary District of Los Angeles County (LACSD) issues an industrial waste permit for non - sanitary sewer flows to the City of Vernon's sewer system for business within Vernon. The industrial waste permit application is submitted to the City for review and approval prior to submission to the LACSD. As part of the City's review of the application a determination is made if the City's sewer system has sufficient ,capacity for the applicants discharge. For significant discharges a flow study is performed. A recent analysis by City staff has determined that in many of the reaches where upsizing the sewer main is recommended large industrial waste dischargers are exceeding their permitted discharge rates. If these dischargers were required to reduce, their flow to the rate which is permitted it could potentially reduce the need for upsizing the sewer main. Section 21.4.E if the Vernon Municipal Codes states, "It shall be unlawful for any person to discharge any industrial wastewater in a manner such that the peak flow rate exceeds the designed capacity of the City sewer, or the peak flow rate approved by the City Engineer in a persons industrial wastewater discharge permit, or the peak flow rate causes adverse hydraulic conditions within the sewer as determined by the City Engineer. Any design, construction, and administrative expenses incurred in an effort to accommodate excessive flow rates in the City sewer system shall be borne by the person who discharged the excessive flow of industrial wastewater." Based on this code section the City has authority to require a reduction in flow 'from businesses which are violating theirSanitation District permit. Therefore, as an alternative to upsizing a sewer line the City may impose flow reductions on industrial waste dischargers to reduce hydraulic capacity concerns. RECOMMENDED CAPITAL IMPROVEMENT PLAN . IEC has generated a phased and prioritized Wastewater Capital Improvement Plan. Cost estimates for each project have been developed based upon the proposed replacement diameter, the estimated length of each project, and the unit costs presented in Table 5. The minimum cost for a gravity main segment was estimated to be $20,000. Estimates of probable capital costs, provided herein represent "Conceptual" level costs as established by the American Association of Cost Engineers (AACE) and represent an accuracy of +50% to -30%. Cost estimates should be verified and updated during the pre -design: phase of each project. Table 11'presents the capital improvement plan with estimated probable costs of $23 Million for Fiscal Years 2009-2013, and $0.2 Million for Fiscal Years 2019-2023, totaling $2.5 Million. As an alternative to upsizing the capacity of a sewer line the City may opt to require a reduction in flow of an industrial waste discharger to such an extent that the existing sewer line will have sufficient - capacity to meet the design criteria set forth. City of Vernon Sewer System Management Plan Technical Memorandum No. 9 March 19, 2010 Page 30 of 36 i ame i i - Kecommended Gravity Main Plan r r GM1 8 203 12 $275 $55,922 GM2 8 129 `` 12 $275 $35,605 GM3 8 326 12 $275 $89,518 GM4 8 325 12 $275 $89,467 GM5 10 175 16 $335 $58,732 GM6 - 10 371 16 $335 $124,324 GM7 10 363 16 $335 $121,526 GM8* 12 35 16 $335** $20,000 GM9 16 282 18 $360 $101,541 GM10 16 375 18 $360 $134,954 GM11 -16 328 18 $360 $117,963 GM12 16 324 ' 18 $360 $116,735 GM13 12 222 14 $310 $68,690 GM14 12 221 14 $310 $68,465 GM15 12 219" 14 $310 $68,022 GM16 16 130 18 $360 $46,955 GM17* 16 267 18 $360 $96,122 GM18** 16 300 18 $360 $107,936 GM19 8 127 12 $275 $35,024 GM20 8 361 -12 $275 $99,230 GM21 _ 8 356 12 $275 $97,811 GM22 8 411 12 $275 $113,064 GM23 15 290 18 $360 $104,465 GM24* 15 219 18 $360 $78,990 GM25 15 207 18 $360 $74,375 GM26* 15 6 -` 18 $360** $20,000 GM32 10 23 12 $275** $20,000 GM33* 10 201 12 $275 $55,257 GM34* 10 200 12 $275 $55,106 GM27 NO 8 401 184 12 $275 $50,728 GM28 8 114 12 $275 $31,273 GM29 8 265 12 $275 $72,990 GM30. 8 39 12 $275 $10,695 GM31* 8 8 12 $275** $20,000 �rbtt Total :11' 7,607 >�5 $2,461,484 -.Gravity main upsized due to diameter fluctuation criteria; not capacity *' Minimum cost estimate of $20,000 per gravity main segment utilized