CITY OF MONTEREY SANITARY SEWER MANAGEMENT PLAN

CITY OF MONTEREY SANITARY SEWER MANAGEMENT PLAN February 2013

Table of Contents I. GOALS... 3 II. ORGANIZATION... 3 III. LEGAL AUTHORITY... 4 IV. OPERATIONS AND MAINTENANCE PROGRAM... 6 V. DESIGN AND PERFORMANCE PROVISIONS... 8 VI. OVERFLOW EMERGENCY RESPONSE PLANS... 9 VII. FOG CONTROL PROGRAM... 13 VIII. SYSTEM EVALUATION AND CAPACITY ASSURANCE PLAN... 19 IX. MONITORING, MEASUREMENT AND PROGRAM MODIFICATIONS... 21 X. SSMP PROGRAM AUDITS... 21 XI. COMMUNICATION PROGRAM... 22 Figure 1: City of Monterey Plan and Public Works Department Organization Chart Appendix A: City of Monterey Authorized Representative Memo Appendix B: Sewer Spill Protocol Appendix C: Waste Discharge Requirements Order No. 2006-0003-DWQ Appendix D: City of Monterey City Code Chapter 30 Sewers and Sewage Disposal Appendix E: MRWPCA Ordinances 92-02 & 93-03 Appendix F: Project Detail for Strap-on-Saddle Appendix G: Sewer Lift Station Inventory Summary Appendix H: Hot List Appendix I: 1988 Sewer Fee Study Update Appendix J: 2011 Sewer Rate Study 2

I. Goals The main goal of the City of Monterey s Sewer System Management Plan is to provide a plan and schedule to properly manage, operate, and maintain all parts of the sanitary sewer system. This will help reduce and prevent sanitary sewer overflows (SSOs) as well as mitigate any SSOs that do occur. Other local agencies involved in the application of this plan include the Monterey Regional Water Pollution Control Agency (MRWPCA), the Monterey County Environmental Health Department, and the Central Coast Regional Water Quality Control Board. City of Monterey: Minimize Sanitary Sewer Overflows (SSO s) Minimize sewer main cleanings, Minimize disruption at pump stations Keep wastewater out of the storm drain system and receiving waters MRWPCA: Improved performance at treatment plant Minimize disruption at pump stations Monterey County Department of Environmental Health: Prevent public health hazards Central Coast Regional Water Quality Control Board: Prevent contamination of local waterways from Sanitary Sewer Overflows Background The City of Monterey is an incorporated city in Monterey County, California. The city encompasses 8.6 square miles of land and 3.47 square miles of water (in the Monterey Bay). The population of the City of Monterey is approximately 29,500. The City sewer infrastructure consists of 102 miles of sewer mains and 2,307 structures including manholes and pump stations located in City easements on federally owned property at the U.S. Naval Postgraduate School (NPS) and the U.S. Presidio of Monterey (POM). The Presidio of Monterey sewer system is owned by the City of Monterey, but was traditionally a separate system. II. Organization Administration and maintenance positions responsible for implementing measures in the Sewer System Management Plan program are detailed in each section of the plan. A copy of the organization chart of the City of Monterey Plans and Public Works Department is attached as Figure 1. The activities required by the Sanitary Sewer Management Plan are divided between the Planning, Engineering, and Environmental Compliance Division under the Chief of Plans, Engineering, and Environmental 3

Compliance, and the Plans and Public Works Department under the Deputy City Manager, Plans and Public Works. Within the Parks and Maintenance Division, the Streets and Utilities Manager is the lead for the group responsible for the sewer system. The Parks and Maintenance Division is generally responsible for operating and maintaining the sanitary sewer collection system as well as responding to overflow events and reporting overflows. The Engineering office is generally responsible for system inspection, mapping, design, analysis, and capital project programming. Protocols will be developed jointly, and annual reporting will be prepared by the Engineering Division with information obtained from the Streets Division. (a) The responsible or authorized representative for the City of Monterey is the Chief of Planning, Engineering, and Environmental Compliance as delegated by the City Manager A memo designating an Authorized Representative for The City of Monterey s Sanitary Sewer Management Plan is included in Appendix A. (b) Deputy City Manager, Plans and Public Works: Hans Uslar (831) 646-3884. Parks Operations Manager: Louie Marcuzzo (831) 596-8957. Chief of Planning, Engineering, and Environmental Compliance: Chip Rerig (831) 646-3437. An organizational chart is attached as Figures 1. (c) The City s spill response protocol, which includes the chain of reporting is attached as Appendix B. III. Legal Authority As required by Waste Discharge Requirements under Order Number 2006-0003-DWQ (Appendix C), City of Monterey staff has researched the existing legal authorities of the City. (a) Prevent illicit discharges into the sanitary sewer system: City Code Chapter 30 (Appendix D) governs sewers and sewage disposal in the City of Monterey. Section 30-1.5 which was incorporated by Ordinance 3284 (September 2000), specifically pertains to maintenance of sewer laterals and requires that the lateral shall be maintained in a manner that prevents the entry of ground water or surface waters into the conveyance. In the same manner, the City is required to maintain its own system to control infiltration from inflow sources. The Monterey Regional Water Pollution Control Agency s (MRWPCA) Ordinance 92-02 (Appendix E) is incorporated by reference into the City of Monterey s City Code. MRWPCA Ordinance 92-02 section 2.03, entitled Prohibitions on Storm Drainage and Ground Water, prohibits inflow through direct or indirect connections to the collection system. In addition, City of Monterey Ordinance 4

3302 requires that property owners must remove any abandoned sewer lateral, which does not serve a habitable property for a period of over three months. Permits for the installation, testing, and inspection of new and rehabilitated sewer laterals are obtained and enforced through the City of Monterey Permits and Inspection Services Division. Sewer laterals are governed by Chapter 7 of the California Plumbing Code and require a permit for construction or rehabilitation. Sewer mains are installed, tested and inspected according to industry standards used in City specifications. Inspections are done by City Public Works Inspectors for work done by hired contractors. In-house repair work is often done by City Streets Maintenance personnel trained in proper construction methods. Inspection of in-house work is typically accomplished by closed circuit television video of the lines after the project is completed. (b) Require that sewers and connections be properly designed and constructed: Sewers and connections are governed by the California Plumbing Code adopted by the City of Monterey. Anyone who makes an excavation within the City right-of-way is required to first obtain a permit from the Planning, Engineering and Public Works as per City Code Chapter 32 Article 6 Street Excavations. When a Street Opening Permit is obtained for the purpose of either constructing or replacing a sewer lateral, staff inspects the connection from the lateral to the City sewer main as well as the trench backfill. The new lateral from the main to the property line is inspected by the Public Works Inspector. The design and construction of sewer laterals are governed by Chapter 7 of the California Plumbing Code. Lateral work on private property is inspected by City Building Inspectors. An approved project detail standard for a Strap-On-Saddle for Connection to PVC or Cured-In-Place Liner is included as Appendix F. Sewer mains are typically designed by City engineering staff or by consultants hired by the City. For improvements within private subdivisions that will be turned over to the City, the design must be reviewed and approved by City staff prior to construction. Public Works Inspectors inspect all sewers that are to be dedicated to the City. All private sewer mains are also inspected by Public Works Inspectors. (c) Ensure access for maintenance, inspection, or repairs for portions of the lateral owned or maintained by the Public Agency: Whenever City sewer mains are repaired or rehabilitated, they are inspected either by City staff or by contract inspectors using closed circuit television cameras. In addition, if sewer mains require excavating, City staff or contractors hired by the City to perform inspections will inspect the work at critical points such as preparation of pipe bedding; placement of the pipes; backfill placement and compaction and final paving. (d) Limit the discharge of fats, oils, and grease (FOG) and other debris that may cause blockages: 5

On July 5, 2005, the City of Monterey passed and adopted Ordinance No. 3357 C.S. adding Chapter 30 Article 3 of the City of Monterey Municipal Code Relating to the Installation, Maintenance, and Use of Grease Traps, Grease Interceptors of Other Comparable Devices. This ordinance sets forth the requirements for installation and maintenance of grease traps and grease interceptors for food service establishments in the City of Monterey. The ordinance includes by reference, the existing Regional Grease Source Control Program implemented by MRWPCA and allows the City of Monterey to adopt and update its own Source Control Program by resolution. This will allow future routine amendments to the program to occur more easily. See Appendix D, City of Monterey City Code Chapter 30 Sewers and Sewage Disposal. (e) Enforce any violations of its sewer ordinances: Requirements of the national pretreatment program under 40 CFR 403.5 are included in MRWPCA s Ordinance 92-02, Section 2.10.3 (Appendix E). All National Categorical Pretreatment Standards upon their promulgation, shall apply in any instance where they are more stringent than those in this Ordinance. MRWPCA also reserves the right to apply stricter standards than the national pretreatment program. The City of Monterey has adopted these standards by reference to MRWPCA s requirements. Legal authority will be periodically reviewed as changes to requirements or City policies warrant. This activity will be initiated by Planning, Engineering, and Environmental Compliance Division and Public Works staff and will include consultation with the City Attorney s office and any outside agencies necessary to assure proper legal authorities are in place to implement and enforce this program. Any violation of the City s ordinance will be enforced by the City. Depending upon the nature of the violation, the Chief of Permits and Inspection Services, City Engineer, Code Enforcement Officer, and/or the City Attorney may be involved. IV. (a) Operations and Maintenance Program Up-To-Date Map of the Sanitary Sewer Collection System The City of Monterey Planning, Engineering, and Environmental Compliance Division maintains Geographic Information System (GIS) data used for a base map of the collection system. The spatial data is created using the City s digital aerial orthophotos and Global Position Satellite (GPS). The geographic data is linked to information stored in Hansen Asset Management Software. The database contains condition reports, work order history, and structural information. The system map shows all gravity mains of the City-owned collection system as well as pump stations, force mains and manholes within the city limits. Data is projected into California State Plane zone IV coordinate system, and assembled into 86 mapbook pages scaled to 1 = 200. The City of Monterey does not maintain mapping of private laterals. 6

(b) Routine Preventive Operation and Maintenance The City of Monterey uses Hansen Asset Management Software to track information pertaining to sewers. This software tracks work order status, costs, and completion schedules. Hansen is also used to schedule recurring maintenance and cleaning. The software keeps track of all work done on a particular line, inspection results, and condition assessment data. The Parks and Maintenance Division uses Hansen to keep track of maintenance and routine hot list cleaning. The hot list is a list of pipes that are maintained on a regular (ie: weekly, monthly, or quarterly) basis by the sewer jet crew. Examples of hot list work order reports generated by Hansen software are included in Appendix H. (c) Rehabilitation and Replacement Plan Engineering studies and assessments of the City s sanitary sewer collection system performed over the past ten years provided results regarding the condition of the existing sanitary sewer collection system and identified priority repair and replacement projects. Utilizing an A through F standard rating system for the sanitary sewer collection system, sewer structures (sewer pipes, sewer manholes, and lift stations) were flagged for repair or replacement based on their existing level of defect. Those structures that received a C, D, or F rating based on the quantitative measure of structure defects are planned for rehabilitation. The proposed citywide sanitary sewer collection system rehabilitation project is estimated to cost approximately $16.8 million. Toward this end, the City of Monterey is pursuing a low-interest loan from the State Water Resources Control Board, Clean Water State Revolving Fund Program. The loan will be repaid through a phased 5-year increase of City sewer charges and connection fees approved by City Council in August 2011, following Proposition 218 procedures for sewer rate restructuring. The City of Monterey has completed environmental compliance documents required to pursue the sanitary sewer collection system rehabilitation. This work included collaboration with Presidio of Monterey and Naval Postgraduate School Staff to ensure proper NEPA considerations in addition to CEQA requirements. These documents were posted to the State Clearinghouse for public comment in January 2013. Barring delays from the environmental compliance process, construction is scheduled to begin in Summer 2013. (d) Training All contractors working on the City of Monterey s sanitary sewer collection system are required to have a valid Class A General Engineering or an appropriate Class C specialty Contractor s license. 7

Parks and Maintenance Division staff assigned to working on sewers receive training in collection system operations and maintenance during twice monthly safety meetings and on the job from supervisors. One of our maintenance staff is CWEA Grade II certified. (e) Provide equipment and replacement parts inventories - identify critical replacement parts The City of Monterey contracts maintenance of sewer pump station equipment to the Monterey Regional Water Pollution Control Agency (MRWPCA). The City owns a mobile emergency generator for use in the event of a stationary generator failure. MRWPCA is responsible for maintaining pump stations and the equipment necessary for that task. City-owned and operated equipment includes a sewer jet truck, Vactor truck and other mobile equipment necessary for routine maintenance of sewer mains and spill cleanup. The Parks and Maintenance Division is responsible for ensuring that equipment is kept in proper working condition and that backup supplies are available. Any mechanical parts necessary to perform fleet maintenance are the responsibility of the City s Fleet Maintenance Operations. V. Design and Performance Provisions (a) Design and construction standards and specifications for the installation of new sewer systems, pump stations and other appurtenances; and for rehabilitation and repair of existing sewer systems Properties in the City of Monterey The current Plumbing Code in the City of Monterey is the 2010 California Plumbing Code. All new buildings and renovations requiring a Building Permit must comply with the provisions of this Code. Chapter 7 addresses all of the requirements for a private sanitary sewer system including requirements for sewerage within the building and outside to the property line. Section 710 addresses installation of private ejector pump systems. Section 9-2 of the Monterey City Code contains City-specific amendments to the California Plumbing Code. Section 710.1 has been amended by the City to require that any building whose lowest fixture is less than two feet above the rim of the nearest uphill manhole must have a backwater valve, relief vent and cleanout approved by the Building Inspector. Maintenance requirements for existing laterals are specified in Monterey City Code Section 30-1.5 (Appendix D). Design and construction standards and specifications for the installation of new public sewer systems are as required by the City Engineer. The City Engineer refers all such 8

inquiries to the standards set forth in the Gravity Sanitary Sewer Design and Construction by Joint Task Force of the American Society of Civil Engineers and the Water Pollution Control Federation, Dan L. Glasgow, Chairman, 1982. Design and construction for rehabilitation and repair of existing sewer systems is required to comply with the standards set forth in the Existing Sewer Evaluation and Rehabilitation, Second Edition by Joint Task Force of the Water Environment Federation and the American Society of Civil Engineers, B. Jay Schrock, Chairman, 1994. Connections from Properties Outside the City Limits Currently, the Monterey City Code Section 30-8 requires that all sewer connections from properties outside the City be made in a manner satisfactory to the City Engineer. It also states that no outside sewer permit shall be granted for a new building or establishment unless the plumbing and connection comply with the Plumbing Code of the City adopted by Chapter 9 of the City Code. In the case of an old building or establishment, the plumbing and connections must be approved by the Building Inspector. The design and construction standards for properties outside the city limits are the same as those within the city limits. (b) Procedures and standards for inspecting and testing the installation of new sewers, pumps, and other appurtenances and for rehabilitation and repair projects New sewers are inspected from the building to the property line by City of Monterey Building Inspectors. From the property line to the City main, inspections are done by the City of Monterey Public Works Department Streets Division. Trench compaction is inspected by the City s Capital Projects or Permits and Inspection Services Division. Rehabilitation projects on City mains are inspected by videotaping the condition of the line once the specified rehabilitation method has been implemented. Testing of new sewers including lateral connections and sewer systems is specified in the 2010 California Plumbing Code section 723.0. Air testing for rehabilitation and repair projects is defined in the California Plumbing Code. Testing of pumps and other appurtenances is defined in the California Plumbing Code. VI. Overflow Emergency Response Plan The Permittee shall develop and implement an overflow emergency response plan that identifies measures to protect public health and the environment. (a) Notification Ensure proper notification procedures so that primary responders and regulatory agencies are informed of all sanitary sewer overflows in a timely manner. 9

The City of Monterey responds to all reports of sanitary sewer overflows through its Parks and Maintenance Division. During regular business hours, calls go directly to the Parks and Maintenance Division and are routed to crews by the Office Assistant. After hours, calls are routed through the emergency communications center. The first responder to an after-hours event will typically be the Fire Department, which will begin spill containment. The calls are then routed to the on-call sewer maintenance crew for response. All overflows also result in notification of the County Health Department. Other notifications are made as required and we follow the guidelines as published by the Central Coast Regional Water Quality Control Board at: http://www.swrcb.ca.gov/rwqcb3/water_issues/available_documents/2008_09_02%20_sp ill%20_reporting_guidance.pdf, which is also the basis for the City s reporting protocol, included as Appendix B. (b) Response Ensure that all overflows are appropriately responded to, including ensuring that reports of overflows are immediately dispatched to appropriate personnel for investigation and appropriate response. The City of Monterey responds to all reports of sanitary sewer overflows through its Parks and Maintenance Division. Once a staff person is on scene, the first assessment made is the size and extent of the spill. If the spill occurs on private property and is contained on that property, the property owner is advised to contact a plumber to cleanup and make necessary repairs. If the spill occurs on private property and has overflowed into public right-of-way or into a water body, the Parks and Maintenance Division will perform cleanup as directed by the Monterey County Health Department in conjunction with the private property owner s plumber. The Parks and Maintenance Division typically runs the sewer jet down the adjacent main line to determine whether the overflow occurred as the result of a blockage in the main line or the lateral. If the spill occurs in the public right-of-way as the result of a main line blockage, the Parks and Maintenance Division responds by clearing the main line and cleaning up per the City s cleanup protocol and County Health requirements. If any deficiency is noted that requires further work, a work order is generated through the Hansen Asset Management System for follow-up. (c) Notification Ensure immediate notification of health agencies and other impacted entities (e.g. Water suppliers) of all overflows. Report all overflows to the Regional Board and the Monterey County Health Department, Monterey Regional Water Pollution Control Agency, and report to the State OES, if the overflow is 1,000 gallons or larger. The Sewer System Management Plan should identify the public health agency and other officials who will receive immediate notification. 10

All sewer spills are reported in accordance with the Central Coast Regional Water Quality Control Board s sewage spill reporting guidelines and the City s protocols. 1. Monterey County Environmental Health: All overflows are reported to the County Health Department immediately regardless of size. Notification occurs as soon as the overflow is reported or discovered. 2. Regional Water Quality Control Board: All overflows from the Permittee s sanitary sewer system are reported to the Regional Board by telephone, voice mail, or fax as soon as (1) notification is possible; (2) notification can be provided without substantially impeding cleanup or other emergency measures; and (3) no later than 24 hours from the time that the Permittee has knowledge of the overflow. 3. Monterey Regional Water Pollution Control Agency: All overflows are reported as soon as cleanup is complete. 4. Office of Emergency Services: All overflows greater than 1,000 gallons are reported to the State Office of Emergency Services in accordance with California Water Code Section 13271. 5. Entry of information into the State s California Integrated Water Quality System for all spills. Entry of information is completed by the Parks Division. (d) Training and Awareness Ensure that appropriate staff and contractor personnel are aware of and follow the Emergency Response Plan and are appropriately trained. City of Monterey Parks and Maintenance Division has been trained in following the Sewer Spill Protocol including appropriate notifications and cleanup procedures. Operations and Maintenance Engineer typically does follow-up and after-the-fact notifications. (e) Emergency Operations Provide emergency operations, such as traffic and crowd control and other necessary emergency response. Emergency operations related to overflow response are handled by the City of Monterey Fire Department and Police Department if applicable. The Fire Department is typically the first responder to an incident after hours. Their first order of business is to secure the area so that no contact is made. Their second task is to stop any flows from entering storm drains and to contain the spill if possible. If additional emergency operations are required the Police Department may be called in for backup. 11

(f) Containment and Monitoring Ensure that all reasonable steps are taken to prevent or contain sewage and prevent sewage discharges to waters of the United States and minimize or correct any adverse impact on the environment resulting from the overflows, including such accelerated or additional monitoring as may be necessary to determine the nature and impact of the discharge. The City of Monterey Parks and Maintenance Division responds to all calls for sewer spills. If the spill flows onto public property, City crews will perform cleanup operations to contain the spill and direct the homeowner to contact a plumber to fix the problem. If the spill is contained onsite and is not a continuing discharge, the City will direct the homeowner to contact a plumber to fix the problem. The Monterey County Health Department is typically contacted and the Monterey Fire Department responds as a first responder when the call goes to 911. All personnel are trained in the proper methods of spill containment and response times are typically under 20 minutes. Containment of overflows is done by the Parks and Maintenance Division. If possible, overflows are contained before they reach storm drains or surface waters. Once contained and stopped, the area where the overflow has occurred is cleaned per County Health Department requirements. Typically this is accomplished by using a bleach solution with a Hudson sprayer to kill any bacteria on hard surfaces where public contact could occur. Once the bleach has evaporated the area is flushed with water and the water is vacuumed up for proper disposal. If the overflow reaches a storm drain or surface water, attempts are made to contain further contamination. Once containment has occurred, City crews will follow the spill downstream using Ammonia Test Strips to find the extent of the contamination. The City currently uses an Ammonia Quick Dip aquarium test strip with a range of 0-6.0 ppm. These strips are indicators of the presence or absence of sewage. The level of ammonia that results in "unacceptable" effects on freshwater organisms depends on water temperature and ph. From several years of dry weather season water quality monitoring, the typical background ammonia levels are 0.5ppm. The ammonia test strips indicate for freshwater that anything over 0.5 ppm is in the Stress range. When the maintenance crews monitor a surface water body with the ammonia test strips, they find the extent of the elevated levels of ammonia and attempt to remove all contaminated water to that point. In a stream this would mean making a temporary earthen containment area and vacuuming all liquid upstream of that point to the point of entry. The Monitoring and Reporting Program specified in the Waste Discharge Requirements requires all spills to surface waters be sampled to determine their effects on surface waters. For marine water, all samples shall be analyzed for total and fecal coliform as well as enterococcus. For fresh water, all spills shall be tested for fecal coliform. 12

Currently, any spill to the marine environment is tested by the Monterey County Environmental Health Department. A spill which reaches the ocean will also result in a beach closure. Fresh water spills have been handled on a case by case basis to date. The Health Department will sample spills when they are available on scene, but unfortunately that is not always the case. VII. FOG Control Program Beginning in 2005, the City of Monterey began an aggressive program to find sources of FOG and to bring FOG generators into compliance with the City s fats, oils, and grease control laws. The City of Monterey entered into a contract with the Monterey Regional Water Pollution Control Agency (MRWPCA) to inspect all food service establishments (FSEs) and to create a database of information about each of the FSEs including the type of cooking equipment; size and type of washing equipment and any existing grease pretreatment equipment. The City of Monterey then notified all of the non-compliant FSEs of the need to upgrade equipment. In August of 2009, all FSE s were notified about the requirement to have their equipment upgraded by October of 2010. One aspect of the City s program is that FSE s were given the opportunity to install a code-compliant grease trap in lieu of a grease interceptor (as defined by MRWPCA) if the FSE agrees to a monthly interceptor waiver fee. Funds from this fee are used to fund all aspects of the FOG program. The following is a summary of the City s FOG program: Definitions "Food service establishment": A facility that prepares food for consumption either on or off the premises, including, but not limited to, restaurants, bars, ice cream shops, candy makers, sandwich makers, delicatessens, bakeries, cafeterias, markets, bed and breakfast inns, motels, hotels, meeting halls, caterers, retirement and nursing homes or pizzerias. The term, as used in this chapter, does not refer to food stores or establishments that do not prepare food on premises or process food in a manner so as to contribute grease to the sewer system. Hot List : The City of Monterey s list of segments of sewer main that require regular preventative maintenance to prevent sewer overflows. Lines may be placed on this list based on grease load, roots, or line structural conditions such as a sag. Sewer Overflow : A sanitary sewer overflow or sewage spill, is each instance of a discharge of sewage from a sanitary sewer system other than to the wastewater treatment plant. Grease Trap : A device placed under or in close proximity to sinks or other facilities likely to discharge grease in an attempt to separate, trap, or hold oil and grease substances to prevent their entry into the sanitary sewer collection system. 13

Grease Interceptor : A large preformed tank of 300 gallon or greater capacity installed underground so constructed as to separate and trap or hold, oil and grease substances from the sewage discharged from a kitchen facility in order to keep oil and grease substances from entering the sanitary sewer collection system. Background The City of Monterey Public Works Engineering Division is currently working with the Monterey Regional Water Pollution Control Agency under Waste Discharge Requirements Order No R3-2002-0078 to implement a source control program for grease control. Locally, grease from commercial sources has been found to be the major problem contributing to blockages of the sanitary sewer system. On average, grease concentrations in residential wastewater flows were found to range from 15-250 mg/l whereas commercial sources contributed 1,000 s-10,000 s mg/l. The major source of wastewater containing oil and grease and contributing to sewer overflows is from commercial sources and more specifically food-service establishments, thus the majority of this program is focused on commercial food-service establishments. The City has been very successful in controlling the number of grease related spills through a rigorous cleaning schedule. Residential Program Data collected for concentration of grease in residential vs. commercial wastewater streams and the makeup of the City of Monterey s hot list indicate that approximately 10-25% of the grease contribution to the sanitary sewer system comes from residential uses. The City of Monterey has joined with other local agencies through the Southern Monterey Bay Discharger s Group to develop a regional public education program for residential users of the system. The Group currently maintains the Clogbusters.org web site, which features resources, information, and awareness advertisements in English and Spanish. This program may be modified yearly as conditions warrant. Commercial Program The City of Monterey s existing grease control program is run in cooperation with the MRWPCA Source Control Program and relies heavily on references to MRWPCA ordinances and requirements. MRWPCA Source Control Inspectors currently review plans for commercial establishments for required grease control equipment upgrades any time a new business license is issued, an application for a building permit for a remodel is received, or a change of ownership is filed. New Businesses When a new food service facility applies for a business license, a copy of that license is automatically routed to MRWPCA so that they can update their records. At that time, the MRWPCA Source Control Division will make a determination of the grease control equipment necessary, if any. 14

Remodels Any time a business applies for a Building Permit for a remodel or addition, the City makes a determination if MRWPCA should be notified. The City of Monterey Permits and Inspection Services Division requests MRWPCA to review the plans for potential upgrades to grease control equipment. MRWPCA then adds their requirements to the City Building Permit requirements, and inspects the business for compliance. Change of Ownership The City of Monterey Revenue Division notifies MRWPCA of all new business licenses, including change of ownership of existing businesses, allowing them the opportunity to place new requirements on commercial grease control equipment, if necessary. MRWPCA s Source Control Division then does the follow-up to ensure that proper equipment is installed. No Grease Control Equipment Installed If during an inspection of a food service establishment, MRWPCA Source Control Inspectors find that grease control equipment is not installed, the business is required to upgrade to current standards. Businesses are not grandfathered under the existing MRWPCA Regional Source Control Program. The Monitoring and Reporting Program Number R3-2002-0078 for Waste Discharge Requirements for Sewage Collection Agencies Tributary to Monterey Regional Wastewater Treatment Plant in Monterey County Section VIII.A requires the following: (A) The grease control program shall identify sections of the sewer system subject to grease blockages and establish a cleaning maintenance schedule for each section; (B) The program shall develop and implement source control measures, for all sources of grease and fats discharged to the sewer system, for each section identified in (A) above. Under these requirements, the City of Monterey requires food services establishments with a reasonable potential to discharge fats, oils, and grease (FOG) to install or upgrade grease removal equipment. Grease interceptors will be the preferred method of source control. Interceptors must be installed within 360 days of receipt of a sizing letter from the City or MRWPCA. If an interceptor installation is infeasible, a waiver may be granted by the City. If a waiver is granted, the food service establishment will be required to pay a monthly grease surcharge waiver fee (i.e. waiver fee) to compensate the City for expenses related to FSE grease abatement activities, such as jetting of hot list areas and grease outreach. 15

Hot List Areas The City of Monterey Department of Public Works Streets Maintenance Division maintains 104 miles of sewer mains throughout the City and the Presidio of Monterey. Eleven areas of the City require regular preventative maintenance due to heavy grease collection in the mains in order to prevent sewer overflows. Of those areas, five require weekly jetting, one requires biweekly jetting, and five require monthly jetting. The following table Grease Related Hotlist shows the lines that are currently cleaned on a weekly, biweekly, and monthly basis by virtue of grease buildup alone. As part of this stepped up source control program, the City contracted with MRWPCA to inspect all food service establishments to determine existing equipment and to then analyze the results of these inspections for further requirements. Future requirements may include increased maintenance for businesses, or upgrades to existing grease equipment. GREASE RELATED HOT LIST Hot List Area Jetting # Food Service Number In Compliance Frequency Facilities Wharf I Weekly 11 7 Wharf II Weekly 3 2 Wave/Prescott Weekly 4 4 Cannery Row Weekly 20 18 Munras 2x monthly 8 8 North Fremont Monthly 17 14 Dela Vina/Encina Monthly 0 0 Olivier Monthly 1 1 Calle Principal Monthly 3 3 Abrego/Fremont Monthly 8 8 Alvarado Monthly 21 20 (a) Implementation Plan and Schedule for Public Education Outreach Program for Grease and Fats: A Public Education and Outreach Program is being implemented regionally by MRWPCA for the six permitted entities under Order R3-2002-0078 as well as the addition of the Carmel Area Wastewater District. Public education is coordinated and implemented by MRWPCA s Public Education Coordinator. The Public Education and Outreach program resembled similar efforts previously made by the City of Pacific Grove, MRWPCA, and the Seaside County Sanitation District for residential grease reduction including newspaper and radio advertisements, movie theater ads, and targeted press releases related to turkey fryer oil disposal at appropriate times of the year. Further details of this program are outlined in the Source Control Program. 16

(b) Plan and Schedule for Disposal of FOG Generated within the Sanitary Sewer Service Area: Unrecyclable or contaminated fats, oils, and grease are accepted for disposal by MRWPCA at the regional treatment plant. Disposal capacity is more than adequate and the amount of grease being disposed is insignificant to the treatment plant s operational capacity. Due to constraints on commercial business development in the region, there is no potential for overload of disposal capacity at the treatment plant from new restaurants. Restaurants currently contract with a variety of grease haulers for removal of both recyclable and unrecyclable materials. Recyclable grease is collected by a local tallow company at either no cost, or very low cost to the restaurant. Recyclable grease is often rendered for use in animal feeds. (c) Legal Authority: Monterey City Code Chapter 30 Sewers and Sewage Disposal contains requirements for discharges to the sanitary sewer system and adopts MRWPCA ordinances and their amendments by reference. City Code Sections 30-2 adopts MRWPCA regulations by reference. City Code Sections 30-9.1 gives legal authority to both the City and MRWPCA to administer and enforce MRWPCA regulations within the city. Typically, enforcement is accomplished as a joint effort between the two agencies. MRWPCA Ordinances 92-02 and 93-03 regulate wastewater strength and quantity discharges to the sewer system. MRWPCA has the authority to inspect a commercial establishment for compliance with its source control program at any time. Typically, problems are found as the result of either a regularly scheduled inspection, or a sewer overflow event. The City of Monterey reports all sewer overflows to both the MRWPCA and the Regional Water Quality Control Board. Article 3 of Monterey City Code Chapter 30 Sewers and Sewage Disposal requires FSEs to install grease control equipment to effectively manage their wastewater discharges. This ordinance fulfills the requirement of the Waste Discharge Requirements. (d) Requirements To Install Grease Pretreatment Equipment, Design Standards, Maintenance Requirements and Record Keeping: Requirements to install grease pretreatment equipment are addressed in the Program above. All equipment must meet the California Plumbing Code and be installed per this code. In addition to the program description above, our Program includes a maintenance responsibility as follows: 17

Grease Control Equipment Maintenance MRWPCA will work with each FSE to identify the proper sizing of grease control equipment and to set up a required maintenance schedule. The recommended maintenance schedule for the grease control equipment will be included in the notification letter to the FSEs. The notification letter will also require FSEs to keep a maintenance log for their grease control equipment. During follow-up inspections of FSEs, MRWPCA inspector will verify that the grease control equipment is properly installed and that a proper maintenance schedule for the grease control equipment is being implemented by the FSE. If the inspector sees a violation (e.g. not filling out the maintenance log, not cleaning the trap, trap bypassing, etc.) a notification letter is sent out to the business owner identifying the problem. Subsequent follow up inspections can lead to compliance or to the City issuing a warning letter. If after the warning the business still does not comply, then a hearing is scheduled where the City staff decides what fines, fees, administrative action or grease pretreatment equipment upgrades may be required. The City staff can order an automatic upgrade from a grease trap to a grease interceptor at this point. An ongoing maintenance compliance program will ensure that food service facilities continue to maintain their grease control equipment. All FSEs will be required to maintain records showing that they are regularly maintaining their grease control equipment. (e) Authority To Inspect Grease Producing Facilities, Enforcement Authorities and Sufficient Staffing: Under City Code Section 30-9.2, certain City staff have the authority to inspect FOG producing FSEs. In addition, the Monterey County Department of Environmental Health is delegated the authority as the City s Health Officer, to inspect for Health and Safety issues. MRWPCA Source Control Inspectors have inspection authority for grease control equipment and wastewater related issues (f) Identification of Sanitary Sewer System Sections Subject to FOG Blockages and Establish Cleaning Maintenance Schedule: See Hot List areas above. (g) Develop and Implement Source Control Measures For All Sources of FOG: That is the purpose of the FOG program described herein. 18

VIII. System Evaluation and Capacity Assurance Plan Prepare and implement a capital improvement plan that will provide hydraulic capacity of key sewer system elements under peak flow conditions. At a minimum, the plan must include: In February 2000, the City of Monterey s consultant completed work on a comprehensive sewer condition assessment project which was the result of two years of work and over one million dollars in contracts. Physical inspection and condition assessment of the sewer infrastructure resulted in the development of a condition assessment for every sewer main and structure in the system. A proposed Capital Improvement Program (CIP) was developed using the results of the assessment. The CIP was originally anticipated to be implemented over a 12-year period with projects of approximately $725,000 budgeted for each fiscal year. We have since determined that we will fund the improvements through an adjustment of sewer rates and the use of the State s Revolving Loan program. This will allow us to complete all improvements in one large project over two to three years. We will also be making improvements to reaches of pipes that could not be inspected due to impediments to the camera equipment. Once these lines are inspected, any repairs will be added to the inventory of repairs. On August 2, 2011, the City Council approved a restructuring of the City s sewer rates as well as rate increases. The rate increase is phased in over a five-year period, which began in October of 2011. The new rates will provide funding that will be able to repay a loan for $16.8 million for the repairs identified in the previous inspections. (a) System 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 must provide estimates of peak flows (including flows from SSOs that escape from the system) associated with conditions similar to those 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. The City of Monterey does project-specific capacity analysis study updates to address potential deficiencies in our collection system. The last system-wide update was completed in September 1988 and is titled Report of 1988 Sewer Fee Study Update. In order to comply with the requirements of the Waste Discharge Requirements, staff reviewed the 1988 plan and found that it is still applicable to our system. The 1988 capacity report resulted in detailed analysis of peak flows, hydraulic deficiencies, and any sources contributing to overflow events. The 1988 report factored in ultimate development based on General Plan projections through 2003. In the ensuing years, growth has been severely limited by water supply issues, and population has actually decreased. The 1988 report was based on a population per household of 2.32 19

persons, the 2003 population per household had decreased to 2.132. The General Plan numbers for ultimate buildout have actually decreased since 1988, and ultimate buildout has not occurred. (b) Design Criteria: Where design criteria do not exist or are deficient, undertake the evaluation identified in (a) above to establish appropriate design criteria. There is very little opportunity in Monterey for new development and therefore, the design of new sewer mains is rarely encountered and it is usually on a scale of fewer than 10 single-family dwellings. Monterey uses well-established design criteria from widely recognized authors and sources such as Metcalf and Eddy s WASTEWATER Treatment and Reuse. In addition, our practice is to design new sewers with a flow rate adequate to assure self-cleaning velocities of 2 FPS and for a peek flow depth d/d of.5. When evaluating existing sewer mains, surcharging may be permitted as long as the maximum hydraulic grade line does not enter into laterals and there is no less than three feet of freeboard below all manhole lids. (c) Capacity Enhancement Measures: Establish a short- and long-term capital improvement program to address deficiencies including prioritization, alternatives analysis, schedules, and control of infiltration and intrusion during both wet weather events and dry weather periods. A short and long-term capital improvement program was developed through a contract with CH2MHill in 1999 and 2000. The project included CCTV video of the entire City of Monterey sanitary sewer system and made recommendations for rehabilitation and upgrades to the system. A 2001 follow-up to that project by Winzler & Kelly Consulting Engineers resulted in the development of a twelve-year Capital Improvement Program. The CH2MHill study included analysis of rehabilitation alternatives and schedules. Currently, our sewerage system is not experiencing overflow conditions nor approaching such conditions even during wet weather periods per regular field observations by City maintenance crews. However, it is likely that infiltration will be reduced once the upcoming sewerage system rehabilitation project is completed. (d) Schedule: Though the City sanitary sewage collection system rehabilitation project is geared towards repairs and replacements, not capacity enhancements, the completion of this project is anticipated to be in 2014. 20

IX. Monitoring, Measurement and Program Modifications (a) Monitor the implementation and, where appropriate, measure the effectiveness of each element of the Sewer System Management Plan; (b) Update program elements, as appropriate, based on monitoring or performance evaluations; and (c) Modify the Sewer System Management Plan program, as appropriate, to keep it updated and accurate and available for audit at all times. Throughout the development of the Sewer System Management Plan, implementation and revisions have been implemented. This plan currently represents the state of the program as of February 2013 with modifications expected on an annual basis. Sanitary Sewer overflow data has been collected and analyzed for the past several years to determine the City s success in implementation of various components of the program. Using our Hansen Asset Management System, data on spills including responsible party, land use, spill location, and cause of spill has been analyzed to ensure that the limited resources of the program are properly spent. To date since 2002 when the City first obtained a WDR through the Central Coast Regional Water Quality Control Board, we have not noticed any significant trends for either better or worse for both main and lateral failures. However, we are aware of a number of sewer infrastructure needs that can contribute to SSOs and those will be addressed with the upcoming sewerage system rehabilitation project. As additional information is collected, trends will be analyzed, and improvement or repairs will be made as needed. It appears from the data that we have gathered that grease-related spills are not a significant problem. However, roots continue to be a major source of spills. Root related spills come in two basic forms: those that are related to roots in private sewer laterals and those that are in the City sewer mains. We are also educating the local plumbers that if they are going to clean a sewer lateral, they should notify our maintenance division so that roots from a lateral are not cut and allowed to flow into the sewer main. In the mean time prior to the initiation of the sewer rehabilitation project, we will be performing herbicidal foaming on a regular basis. X. SSMP PROGRAM AUDITS As part of the SSMP, the Enrollee shall 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 Enrollee s compliance with the SSMP requirements identified in this subsection (D.13), including identification of any deficiencies in the SSMP and steps to correct them. 21