SANITARY SEWER MANAGEMENT PLAN (SSMP)

Transcription

1 SANITARY SEWER MANAGEMENT PLAN (SSMP) CITY OF DEL MAR CALIFORNIA

2 SANITARY SEWER MANAGEMENT PLAN (SSMP) David L. Scherer Public Works Director Tuesday, April 6, 2010 Date Signed Prepared in the PUBLIC WORKS DEPARTMENT CITY OF DEL MAR CALIFORNIA

3 SANITARY SEWER MANAGEMENT PLAN (SSMP) TABLE OF CONTENTS INTRODUCTION SECTION I GOALS SECTION II - ORGANIZATION SECTION III LEGAL AUTHORITY SECTION IV OPERATIONS AND MAINTENANCE PROGRAM SECTION V DESIGN AND PERFORMANCE PROVISIONS SECTION VI OVERFLOW ERP SECTION VII FOG CONTROL PROGRAM SECTION VIII SYSTEM EVALUATION AND CAPACITY ASSURANCE SECTION IX MONITORING MEASUREMENT AND PLAN MODIFICATION SECTION X SSMP PROGRAM AUDITS SECTION XI COMMUNICATION PROGRAM REFERENCES

4 INTRODUCTION Legal Requirements On May 2, 2006, the State Water Resources Control Board (SWRCB) adopted Wastewater Discharge Requirements (WDR) Order # DWQ 1. This order mandated all federal and state agencies, municipalities, counties, districts, and other public entities ( enrollees ) that own or operate sanitary sewer systems greater than one mile in length that collect and/or convey untreated or partially treated sewer to a Publicly Owned Treatment Works (POTW) facility in the State of California to comply with the terms of this Order. The Order also stated that to facilitate proper funding and management of sanitary sewer systems, each enrollee must develop and implement a system-specific Sewer System Management Plan (SSMP). To be effective, SSMPs must include provisions to provide proper and efficient management, operation, and maintenance of sanitary sewer systems, while taking into consideration risk management and cost benefit analysis. Additionally, a SSMP must contain a spill response plan that establishes standard procedures for immediate response to a Sewer System Overflow (SSO) in a manner designed to minimize water quality impacts and potential nuisance conditions. On January 23, 2006, staff presented to the City Council of the City of Del Mar, the SWRCB Order. Subsequently, the SWRCB clarified this Order and now requires all enrollees to obtain their governing board s approval of the SSMP Development Plan and Schedule 1 and final SSMP prior to certification as complete and in compliance. The City of Del Mar owns and operates a collection system consisting of about 22 miles of sewer mains, 3 miles of force main, and three lift stations, which provide service to approximately 4,500 residents (approx sewer connections). 78% of the collection system sewer lines are made up of 6-8 diameter pipe, 20% are 9-15 diameter pipe, and 2% are diameter pipe. The City of Del Mar wastewater is transported to and treated by the City of San Diego. The last audited flows as of , was for Fiscal Year (FY 2008), Del Mar flows to the San Diego Metro System (the basis of cost of treatment) which includes regional returns and centrate balanced against all users was million gallons. Contract Capacity with the City of San Diego for the Transportation Agreement is mgd. Contract capacity with the City of San Diego for treatment is mgd. Sewer System Management Plan Requirements The City submitted a Notice of Intent 3 on 10/27/06 for coverage under the WDR and is in the process of completing a SSMP per the requirements of the WDR. David L. Scherer, Public Works Director for the City of Del Mar and Legal Responsible Official (LRO) registered with CIWQS (SSO online) database on 11/30/06. Introduction - 1

5 Sewer System Management Plan (SSMP) SCHEDULE SSMP Development Plan and Schedule (No specific Section) Population Between 10,000 and 2,500 Completion Date February 2, 2008 Certified: 1/7/08 Goal Section D 13 (i) May 2, 2008 Organization Section D 13 (ii) Certified: 5/1/08 Legal Authority Section D 13 (iii) Operation and Maintenance Program Section D 13 (iv) Overflow Emergency Response Program Section D 13 (vi) FOG Control Program Section D 13 (iiv) Design and Performance Provisions Section D 13 (v) System Evaluation and Capacity Assurance Plan Section D 13 (viii) Monitoring and Program Modifications Section D 13 (ix) Program Audits Section D 13 (x) Communication Program Section D 13 (xi) Final SSMP Implementation November 2, 2009 Certified: 10/29/09 May 2, 2010 The SSMP identifies how the City complies or implements the eleven mandatory elements in the WDR that will reduce Sanitary Sewer Overflows (SSO). The SSMP must include the following elements: 1. Goal 2. Organization 3. Legal Authority 4. Operations and Maintenance Program 5. Design and Performance Provisions 6. Overflow Emergency Response Plan 7. FOG Control Program 8. System Evaluation and Capacity Assurance Plan 9. Monitoring, Measurement, and Program Modifications 10. SSM Program Audits 11. Communication Program In the next pages, you will find a summary description, responses and actions planned or taken related to the guidelines and requirements for development of a sanitary Sewer System Management Plan, as defined in SWRCB Order No DWQ. Introduction - 2

6 SECTION I - GOALS (i) Goal: the goal of the SSMP 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 SSOs, as well as mitigate any SSOs that do occur. 1. To properly manage, operate, and maintain all portions of the City s Wastewater Collection System: through timely implementation of the elements of the SSMP as outlined in the Staff Report to the City Council, on January 7, To provide adequate capacity to convey the peak wastewater flows: working with City Engineer to confirm capacity adequacy based upon existing performance and past studies. The largest user of the City s system is the 22 nd District Agricultural Association (The Del Mar Fairgrounds or 22 nd DAA). The 22 nd DAA and the City of Del Mar completed a Wastewater Disposal Agreement 1 on sewer flows on December 1, This agreement limits: peak rate of flow, peak daily flow, average daily flow and allows for testing of the 22nd DAA wastewater strength. 3. To minimize the frequency of SSOs: through completion of the annual sewer maintenance schedule, by cleaning the system s High Maintenance Areas (HMA) quarterly, and by following established duty protocols and reporting procedures. 4. To mitigate the impacts that are associated with any SSO that may occur. 5. To meet all applicable regulatory notification and reporting requirements: according to the most up to date Sanitary Sewer Overflow Reporting Procedures. Section I-1

7 SECTION II ORGANIZATION (ii) Organization: The SSMP must identify: a) The name of the responsible or authorized representative as described in Section J of this Order. b) The names and telephone numbers for management, administrative, and maintenance positions responsible for implementing specific measures in the SSMP program. The SSMP must identify lines of authority through an organization chart or similar document with a narrative explanation; and c) The chain of communication for reporting SSOs, from receipt of a complaint or other information, including the person responsible for reporting SSOs to the State and Regional Water Board and other agencies if applicable (such as County Health Officer, County Environmental Healthy Agency, Regional Water Board, and/or State Office of Emergency Services (OES) a) The Director of the (PW) of the City of Del Mar, currently Mr. David L. Scherer, is the Legally Responsible Official (LRO) for reporting SSO to the California Integrated Water Quality System (CIWQS) database. b) A current (9/22/2009) hierarchical synopsis of chain of command is included at the end of this section. This organization chart 3 describes the top down responsibilities of City s departments related to Sanitary Sewer Overflows, with names, telephone numbers and addresses for each of the sections, as part of the SSMP. c) The PW Department developed a matrix of the Reporting Procedures for Public and Private SSO s 3, based on the decision making flow chart shown in the General Guidelines for Sewage Collection Overflows 3 from the San Diego Regional Water Quality Control Board. What follows are specific reporting documents for each of the higher up authorities dealing with water quality and protecting the Water of the State. They are: - County of San Diego - Department of Environmental Health (Land and Water Quality Division) Wastwater Spill Reporting Requirements and Guidelines (October 2008) 3. - SSO Facsimile Transmittal Sheet to DEH 3 - SSO Facsimile Transmittal Sheet to SDRWQCB 3 - SSO Facsimile Transmittal Sheet to OES 3 - Utility crews Monthly Duty Schedule with emergency telephone numbers 3. Section II-1

8 Section II-2

9 Section III - LEGAL AUTHORITY (iii) Legal Authority: Each Enrollee must demonstrate, through sanitary sewer system use ordinances, service agreements, or other legally binding procedures, that it possesses the necessary legal authority to: (a) Prevent illicit discharges into its sanitary sewer system (examples may include I/I, stormwater, chemical dumping, unauthorized debris and cut roots, etc.); (b) Require that sewers and connections be properly designed and constructed; (c) Ensure access for maintenance, inspection, or repairs for portions of the lateral owned or maintained by the Public Agency; (d) Limit the discharge of fats, oils, and grease and other debris that may cause blockages, and (e) Enforce any violation of its sewer ordinances. Referenced Chapters of Del Mar Municipal Code 2 satisfy the requirements. In preparation for the compliance with the elements of the WDR, staff began planning and program development in As noted in Section 7, FOG Control Program, significant efforts by staff to reach out to the Food Service Establishments (FSEs) while modifying our existing City ordinances to add legal strength to the wastewater ordinances was conducted. On December 21, 1993, the City of Del Mar, and the City of San Diego, who provides treatment services to the City, entered into a Pre-treatment Agreement 1. This was later incorporated into the Wastewater Disposal Agreement 1 adopted and approved by all Agencies, which use the City of San Diego for wastewater Treatment. On August 28, 2000, the City of Del Mar executed a Metro Wastewater Joint Powers Agreement 1 (JPA) with other regional wastewater agencies to work together to improve the regional system, assist each other with wastewater issues, and support a more proactive method of dealing with wastewater issues. The City remains active in the JPA. The Public Works Director serves as current Secretary and two City of Del Mar Council members serve as the City s representative and alternate to the Board of the JPA. The Public Works Director and Deputy Public Works Director also attend and participate in the technical working group (Metro TAC) formed to assist the JPA. The City has several legal agreements with San Diego for treatment and transportation of wastewater. The City of San Diego accepts Del Mar s sewer through a trunk main near Carmel Valley Road and Interstate 5, which transports the City s sewer through two sewer pump stations owned and operated by the City of San Diego (Pump Station 64 and 65), based upon a Transportation Agreement. Once the sewage enters the defined Metro System, as outlined in the Wastewater Disposal Agreement 1 between the Section III-1

10 City of San Diego and the Metro Wastewater JPA members, it is transported and treated in either at the North City Reclamation Facility, or treated at the Point Loma Wastewater Facility. These various legal agreements establish the capacity and the basis for paying for treatment based upon flow and strength of the City s sewage. The City has a significant industrial customer, the State s 22 District Agricultural Association (The Del Mar Fairgrounds, or 22 DAA). On December 1, 2008, the City and the 22 DAA entered into an agreement 1 on the strength, average daily and peak flow, and capacity, that the City system is capable of accepting from the 22 DAA. This agreement is a legally binding document, and follows several years of discussions and negotiations to protect the City s sewer system from overflows created by the single largest customer which could, if not regulated, create a flow to the City s system that would be unacceptable. The agreement contains penalties and enforcement criteria. The basis for this agreement was a prior study conducted by the City of Del Mar in conjunction with the 22 DAA, which was memorialized in a letter of agreement with the 22 DAA written to then General Manager Brad Gessner, by the City s City Engineer John Powell, dated March 2, The remainder of Del Mar s collection system services a built-out City, with a population of about 4,500 residents. The following are the portions of the Municipal Code 2, as reviewed by the City Attorney in advance of City Ordinance adoption by the City Council, satisfying the legal requirements of the WDR. A. Prevent Illicit Discharges: Chapter and Section B. Proper Design and Construction: Chapter and Chapter C. Access for Maintenance, Inspection, and Repairs: Sections , , , , , C., and D. Limit discharge of FOG: Section and Chapter E. Enforce Violations: Sections and A copy of the municipal code is available on the Del Mar website: A City Council Staff Report of June 22, 2009, introduced an Ordinance amending Chapters (Sewers and Sewage Disposal General) and (Sewers and Sewage Disposal Sewer Connections and Laterals) of the Del Mar Municipal Code establishing Fats, Oils and Grease Control Regulations applicable to Food Service Establishments. Also reviewed were Chapter Sewer and Sewage Disposal - Extensions of sewer mains, and chapter Sewer and Sewage Disposal Regulation of discharge into City Sewer system. An extension to the above documents is the Staff Report 1 (from 1993) related to the Interjurisdictional Pretreatment Agreement for Industrial Wastewater, and correspondence regarding same, including the actual document: Interjurisdictional Pretreatment Agreement of 12/21/93 between City of San Diego, and City of Del Mar 1. Section III-2

11 SECTION IV - OPERATIONS AND MAINTENANCE PROGRAM (iv) Operations and Maintenance Program: WDR Requirement: The SSMP must include those elements listed below that are appropriate and applicable to the Enrollee s system: (a) Maintain 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 storm water conveyance facilities; (b) Describe routine preventive operation and maintenance activities by staff and contractors, 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 should have a system to document scheduled and conducted activities, such as work orders; (c) Develop 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 should focus 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 should include a capital improvement plan that addresses proper management and protection of the infrastructure assets. The plan shall include a time schedule for implementing the short- and long-term plans plus a schedule for developing the funds needed for the capital improvement plan; (d) Provide training on a regular basis for staff in sanitary sewer system operations, and (e) Provide equipment and replacement part inventories, including identification critical replacement parts. The City has a variety of preventative maintenance programs 3 in place to prevent SSOs from the sewer system including Area Maintenance (AM) cleaning, and High Maintenance Area (HMA) cleaning, root control, CCTV, and lift station maintenance. These programs allow for the Collections staff to continually evaluate the system. (a) Maintain an up-to-date map of the sanitary sewer system, showing all gravity line segments and manholes, pumping facilities, pressure pipes, valves and applicable storm water conveyance facilities; The City staff use a detailed map book 3 which shows the features of the collection system such as pipe material, elevations, manhole, and engineering plan numbers. Section IV-1

12 This map is included in City s Geographic Information System (GIS) 1. Collections staff make note of necessary corrections when discrepancies are found. City Engineering staff updates the City s sewer GIS and reprint map books to ensure all are current. (b) Describe routine preventive operation and maintenance activities by staff and contractors, 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 program should have a system to document scheduled and conducted activities, such as work orders. The mainly uses MS Office XL for scheduling and for tracking maintenance and field data 3. This program is used for field data collection on lines, manholes inspections, AM cleaning, root control triennial planning, HMA cleaning, and biennial Closed Circuit Television (CCTV) planning. Using the maintenance manual guide, experience, past performance, manufacturer s recommendations and sitespecific conditions, tasks are scheduled and completed and catalogued by work orders completed by collection staff and input into XL. Preventative Maintenance The two main preventative maintenance programs are AM cleaning (City s Collection System) and HMA cleaning. Cleaning is done using Public Work s rodder machine, or Jet rodder in combination with a Hydro-Vac, or by contract. The AM cleaning program is performed once every year. It is a four month program that consists of cleaning of the total sewer system. The program starts in October and ends in January of the Fiscal Year. Crews work off a document that breaks down the whole system from manhole to manhole and each section is inspected and cleaned, and marked for CIP, when necessary. The HMA program includes areas of the sewer system that are known to have problems such as the build-up of sediment, Fats, Oils and Grease (FOG), roots, or have experienced SSOs. HMAs are scheduled for quarterly cleaning. When SSO occur from a private lateral, staff respond to contain the spill; ensure that the property owner is being responsible to repair the problem and clean-up appropriately; according to established procedures any SSO, staff checks City system through main cleaning; finally, staff has the ability to stop delivery of water to the property through closing water supply at the City meter. The private property owner is responsible per City ordinances 2 for the private lateral to and including the connection to the City sewer main. CCTV The City owns a small portable CCTV system. CCTV is used by the staff to review found trouble spots as they occur during the year. CCTV is also conducted by contract through the City s bi-annual CCTV capital improvement project. This contract videos the City system to re-examine areas which are scheduled for repairs to provide the documentation needed to pin-point repair location or provide entire line data for scheduled lining of the main. Section IV-2

13 Fats, Oils, and Grease Cleaning Areas that are known to have FOG problems are included on the HMA list for increased attention to prevent the occurrence of overflows. Rodding of the lines is also used where there is heavy build up in the lines. Root Control Triennially, the City includes within its approved Capital Improvement Budget, a program 3 to inspect and treat the sewer mains for root control. The City has noticed a decrease in root related problems since staff began this program. Lift Station Maintenance The City s has three (3) sewer pump stations. Each pump station is equipped with SCADA controls for monitoring and emergency call-out. As a part of the preventative maintenance program, staff inspects each lift station. Pump and related equipment are scheduled for maintenance based on manufacturer s recommended schedule. The City also uses contract assistance from private contractors for electrical, generators, pump and motor issues, and SCADA troubleshooting. The City s largest station is the 21 st Street Sewer Pump Station (21 st ST PS). This station has a permanent on-site emergency back-up power supply with an automatic transfer switch in place in the event of loss of power. The San Dieguito Sewer Pump Station is a very low volume lift station. The Station has the capacity to be out of service for a 24 hour period without any spill occurring during even peak flows due to wet well and main capacity. For this reason, this station does not have an emergency back-up power permanently located at the pump station. The 7 th ST Sewer Pump Station is an auxiliary pump station at the end of Little Orphan Alley and if station fails, the station has the capacity to bypass all flows to the 21 st St PS. (c) Develop 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 should focus 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 should include a capital improvement plan that addresses proper management and protection of the infrastructure assets. The plan shall include a time schedule for implementing the short- and long-term plans plus a schedule for developing the funds needed for the capital improvement plan; A Sewer System Master Plan 1 and a North Beach Sewer 3 evaluation was completed in 1988, in advance of City s $6,000,000 bond issuance of Certificates of Participation in September of 1993, to fund construction and repair of wastewater lines identified Section IV-3

14 through the study in need of replacement due to size and or pipe material. Subsequently, a sewer capacity study was completed in 1998 to address the flows from the 22 nd DAA. This plan established a peak flow rate for the 22 DAA. This was the basis for the December 1, 2008, Agreement 1 signed between the 22 nd DAA and the City on sewer flow rates and capacity. The City has regular process for funding improvements identified throughout the maintenance processes. As identified in the City s adopted budget and the City s five (5) year adopted sewer rates 2, the program has engineering every other year for an every other year contract maintenance program which repairs found non-emergency system problems such as manhole linings or sewer main linings. (d) Provide training on a regular basis for staff in sanitary sewer system operations and maintenance, and require contractors to be appropriately trained; Training is an important aspect in the, and a training budget exists to ensure all staff are properly trained and provides each staff member for tuition reimbursement. New staff receive on-the-job training specific to the collection system and maintenance equipment used. Staff also attends outside workshops, whenever possible, and also collective training via Internet Webinars. Grade Certification in Collection System Maintenance is encouraged as well as self improvement training through online courses. On-the-job cross training is actively pursued to ensure that each staff has proficient working knowledge of each and every specific part of a task. All staff are trained on new equipment by the contractor or manufacturer. Equipment manuals are reviewed by staff for maintenance and operational parameters. The City provides much of the required safety training through the APWA (American Public Works Association), MSA (Maintenance Superintendent Association), and also through outside training workshops. Staff receives training in Confined Space Entry, Hazardous Materials Management, and First Aid and CPR. Training includes formal classroom training, informal on-the-job and hands-on training. Staff is also trained to respond to major emergencies and disasters. The City has an emergency operation center and emergency response teams established. Procedures and the implementation of emergency response are outlined in the Sanitary Sewer Overflow Response Plan 3, which is made a part of this SSMP. Each Public Works vehicle (excluding dump truck) has updated wastewater/water system maps, procedures and protocols. Proficiency is required for all job positions and promotions, and training records 3 are maintained to monitor completed classes and schedule employee training. Construction contractors working on City projects are required to have an approved sewage bypass system and emergency response plan in place prior to start of construction. Contractors are instructed to notify staff immediately and to take immediate action to stop any Section IV-4

15 overflow. These procedures are outlined and discussed at the pre-construction meeting and enforced by the City. (e) Provide equipment and replacement part inventories, including identification of critical replacement parts; Staff compile inventory lists of all materials annually. Lining and replacement of underground pipelines, manholes and Lift Stations are contracted out to licensed contractors who have the equipment, materials and staff to complete the work, through the City s biennial Sewer Capital Improvement Program Section IV-5

16 Appendix IV-A: Standard Operating Procedure for Sewer Cleaning Purpose The purpose of this Standard Operating Procedure is to ensure that sewer cleaning is performed in a manner that will produce a high quality work product. Quality is important because it ensures that the sanitary sewers will not experience problems prior to their next scheduled cleaning. Goal The goal of cleaning a gravity sewer is to restore the flow area to 95% of the original flow area of the pipe. Required Equipment and Tools 1. Personal protective equipment (hardhat, steel toe boots, gloves, eye/face protection, hearing protection) 2. Proper safety cones, barricades, flagging, signs or other traffic control devices 3. Sanitary sewer system map book 4. Sewer cleaner Rodding machine 5. Sewer cleaning Jetter 6. Debris traps in the sizes that will be encountered during the day 7. Manhole hook 8. Measuring wheel 9. Disinfectant Procedures for Sewer Cleaning Crew Prior to Leaving the Yard 1. Plan the work so that it starts in the upstream portion of the area and moves downstream, following Area Maintenance (AM) Cleaning Plan and Schedule. 2. Wherever possible, plan to clean sewers from the downstream manhole. 3. Inspect the sewer cleaning nozzles for wear. Replace nozzles that are excessively worn. 4. If this is the first day that this cleaning unit is being used this week, inspect the first 200 feet of hose and couplings for damage or wear. Section IV-6

17 At the Jobsite 1. Wear proper Personal Protective Equipment (PPE). 2. Fill the water tank at or near the first jobsite. 3. Determine and confirm location of upstream and downstream manholes (use street addresses, if possible). 4. Set up proper traffic control by placing traffic signs, flags, cones and other traffic control devices. 5. Move the cleaning unit into the traffic control so that the hose reel is positioned over the manhole. 6. Open the manhole and determine if it is safe to proceed with the cleaning operation. 7. Install the jetter into the manhole. Cleaning Operation 1. Insert the debris trap. 2. Start the auxiliary engine. 3. Lower the hose, with a guide or roller to protect the hose, into the manhole and direct it into the sewer to be cleaned. 4. Start the high pressure pump and set the engine speed to provide adequate pressure for the sewer cleaning operation. 5. Open the water valve and allow the hose to proceed up the sewer. The hose speed should not exceed 3 feet per minute. 6. Allow the hose to proceed 25% of the length of the sewer and pull the hose back. 7. Observe the nature and the quantity of debris pulled back to the manhole. 8. If there is little or no debris, allow the hose to proceed to the upstream manhole. 9. If there is moderate to heavy debris, clean the remaining portion of the sewer in steps not to exceed 25% of the length of the sewer. 10. Open the upstream manhole and verify that the nozzle is at or past the manhole. 11. The sewer has been adequately cleaned when successive passes with a cleaning nozzle do not produce any additional debris, and the sewer is able to pass a full size, six-wire skid ( proofer ) for its entire length. 12. Determine the nature and quantity of the debris removed during the cleaning operation. Section IV-7

18 13. Remove the debris from the manhole using the vacuum unit, or debris device. 14. Rewind the hose on the reel. 15. Remove the debris trap. 16. Clean the mating surface and close the manhole. Ensure that the manhole is properly seated. 17. Enter the results on the Work Order. 18. Move the cleaning unit, break down and stow the traffic controls. 19. Proceed to the next cleaning jobsite. At the End of the Day 1. Inspect the equipment and tools for problems. 2. Report any problems with equipment, tools, or sewers that were cleaned during the day. 3. Turn in all completed Cleaning Work Orders at end of shift. Section IV-8

19 SECTION V DESIGN AND PERFORMANCE PROVISIONS (v) Design and Performance Provisions: (a) 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 (b) Procedures and standards for inspecting and testing the installation of new sewers, pumps and other appurtenances and for rehabilitation and repair projects. The City of Del Mar is a completely built out City of 4,500 residents. The City collects sewerage through a series of sewer mains and three sewer pump stations. The sewage is transported to the City of San Diego for treatment. The City of Del Mar has a process defined within the municipal code 2 as follows for Private Property Sewer Laterals: 1. As defined in Chapter and , private property owners have the responsibility for the installation and maintenance of the private lateral which connects the internal plumbing of the property to the City s sewer main. 2. The connection to the City s sewer system is required to be by permit as covered by Chapter The design and construction of the sewer connections shall be per City standards according to Chapter Inspection is required for installations according to Chapter Installation is the responsibility of the property owner per municipal code. 6. A private owner is required to have a permit to work within a sewer easement or public right-of-way. The Encroachment Permit process is covered by Chapter The City requires both a deposit for review and inspection of construction, and a connection fee. The Connection fee is established through the Proposition 218 Utility Rate setting process and the fee is covered in Chapter Section V-1 (Design and Performance Provisions)

20 8. When an applicant applies for the permit, the City requires submittal of plans and specifications for the construction. The Applicants, prior to application, are given instructions for permits via an Applicant s Guide The City requires contractors to install private laterals and the connections to the City s sewer main according to the San Diego Regional Standards. Attached is a copy of the latest regional standard drawings (Cover Sheet Title: Private Sewer Lateral Construction Details). The City of Del Mar has a process defined within the municipal code 2 as follows for Extension of Public Sewer Mains and repair of Public Sewer Mains by Private Property Owners: 1. When redevelopment occurs and the engineer of record determines that a municipal sewer main requires alteration, the process for the sewer main reconstruction or extension is according to the Municipal Code Chapter The Design is reviewed by the City Engineer and the State Department of Health Services (DHS) when a water main may exist in close proximity to the sewer main extension requiring review by the DHS (Reference: Guidance Memo No of : Guidance Criteria for the Separation of water mains and non-potable pipelines). 3. Application is according to procedures outlined in Chapter and An Encroachment Permit is required per Chapter The Design and Construction is outlined in Chapter through A Sewer Utility Easement is required for Sewer Mains and is covered in Chapter , and generally the width required is 15 feet but may be reduced to 10 feet, if certain approved conditions exists. 6. The City utilizes the San Diego Regional Standards for the construction of the main extensions. Attached is a copy of the latest regional standard drawings (Cover Sheet Title: Sewer Main Construction Details). Section V-2 (Design and Performance Provisions)

21 7. The City has a process of bi-annually improving the sewer system: The City will video and design planned rehabilitation projects, and the following year, bid and construct the improvements. The adopted utility rates provide for funding of this bi-annual program. The City utilizes two selected as-needed consultants which are under contract as approved by the City Council. The two firms will propose, and provide project history of similar projects and qualifications. The City Staff selects the design firm and the City Engineer along with the Public Works Staff provide design review. The final approved plans and specifications are then publically bid and inspection is dictated by City Staff, a contract engineering firm, or the City Engineer. 8. The City of Del Mar has a process for testing Public Sewer Mains and Private Laterals: 1. Video inspection is required of all construction to ensure proper construction and to confirm connections and fit is as required. 2. Test by other means is also required using one of the following methods: a. Pressure testing is required under 4 PSI for a minimum of 4 minutes with a maximum allowable pressure drop of 0.5 PSI. If the pressure drops more than this amount, then re-pressurize to 3.5 PSI and hold for additional 4 Minutes. Pressure must not drop below 3 PSI during this retest. b. Hydrostatic test- All manholes and isolated laterals shall be tested by plugging at the main connection(s) and then filling structure or lateral with water. The water shall for a four hour period not exceed the allowable loss, as determined by the City Engineer. Section V-3 (Design and Performance Provisions)

22 Private Sewer Lateral Construction Details San Diego Regional Standard Drawings: SP-01, SS-01, SS-02, SS-03, SS-04, G-24, G-33, in separate file, to be included hereunder, into this document.

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31 Sewer Main Construction Details San Diego Regional Standard Drawings: SM-01, SM-02, SM-03, SM-04, SM-05, SM-07, SM-08, SP-02, SP-03, SP-05, SP-07, SP-09, in separate file, to be included hereunder, into this document. Section VI-2

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44 SECTION VI OVERFLOW EMERGENCY RESPONSE PLAN (vi) Overflow Emergency Response Plan - WDR Requirement: Each Enrollee shall develop and implement an overflow emergency response plan that identifies measures to protect public health and the environment. At a minimum, this plan must include the following: (a) Proper notification procedures so that the new primary responders and regulatory agencies are informed of all SSO in a timely manner; (b) A program to ensure an appropriate response to all overflows; (c) Procedures to 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 MRP. All SSOs shall be reported in accordance with this MRP. All SSOs shall be reported in accordance with this MRP, the California Water Code, other State Law, and other applicable Regional Water Board WDRs or NPDES permit requirements. The SSMP should identify the officials who will receive immediate notification; (d) Procedures to ensure that appropriate staff and contractor personnel are aware of and follow the Emergency Response Plan and are appropriately trained; (e) Procedures to address emergency operations, such as traffic and crowd control and all necessary response activities; and (f) 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 of Del Mar strives for a proactive approach to maintenance in an effort to reduce or minimize SSOs having impacts to the public health and safety or the environment. Staff responds to all reported SSOs within the City. All overflows or stoppages are documented 3 including private laterals in the Public Right of Way. Section VI-1

45 (a) Proper notification procedures so that the primary responders and regulatory agencies are informed of all SSOs in a timely manner. The PW Department follows all regulatory requirements relating to Sewer System Overflow Response. A copy of the Sewage Overflow Reporting Guidelines is placed in every vehicle for staff to use in the field. The guideline outlines the reporting procedures 3 and the agencies that are required to be notified. All SSOs are responded to immediately during working hours and by two stand-by duty utility personnel on 24 hour call. This plan outlines the process for receiving, responding to and reporting SSOs. If a SSO has occurred, the Public Works Superintendent, Deputy Public Works Director, and/or Public Works Director is advised and notifies the required agencies. All SSOs that reach a waterway are reported immediately. Notification to Environmental Health, Regional Water Quality Control Board (RWQCB), OES (Office of emergency Services), the Department of Fish & Game are outlined in the SSO Report Manual along with appropriate phone numbers, and appropriate Fax Forms. (b) A program to ensure an appropriate response to all overflows; All wastewater staff are trained on the appropriate response to SSOs. As stated above, written guidelines are provided in each vehicle for reporting SSOs, assessing the overflow, documenting the overflow, estimating the volume of overflow. The procedures are in place to provide immediate response and to protect the exposure to the public. Construction contractors working on City projects are required to have an approved sewage bypass system and emergency response plan in place prior to start of construction. Contractors are instructed to notify staff immediately and to take immediate action to stop any overflow. These procedures are outlined and discussed at the pre-construction meeting and enforced by the City. (c) Procedures to ensure prompt notification to appropriate regulatory agencies and other potentially affected entities (e.g. health agencies, Regional Water Quality 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 Board WDRs or NPDES permit requirements. The SSMP should identify the officials who will receive immediate notification. The City s Spill Response and Prevention Handbook 3 outlines the notification steps and includes a complete up to date notification list. The severity and potential impact of the overflow determine the path of notification. Upon arrival to a SSO, the Supervisor is advised of the spill and notifies the required agencies. All SSOs that enter the Waters of the State are reported immediately. Staff s priority is to take all feasible steps and necessary remedial actions to control or limit the release of untreated wastewater, minimize or prevent the discharge and recover as much of the wastewater discharged as possible. Spills that do not reach the Waters of the State are reported to County Department of Environmental Health and the RWQCB within two hours of knowledge of the event. In addition, any spill that may endanger human health or is greater than 50 gallons is Section VI-2

46 reported to the Environmental Health. The Health Officer determines if public notification is necessary such as local press release and posting the affected area. (d) Procedures to ensure that appropriate staff and contractor personnel are aware of and follow the Emergency Response Plan and are appropriately trained; The City has an Emergency Response Plan which is available to all personnel and is used as a resource in the emergency response training. New employees receive this training as part of their orientation and this information is reinforced during the staff meetings, and after a SSO has occurred. The City emphasizes its goal to have no construction-related overflows during pre-bid and pre-construction meetings. Construction contractors are required to submit and obtain approval of all flow bypasses and emergency response plans prior to the start of construction. (e) Procedures to address emergency operations, such as traffic and crowd control and other necessary response activities; The developed a Spill Response & Prevention Manual 3 and it is updated to include the current requirements and regulations. This is in addition to the guidelines in each vehicle describing response to agencies, charts for estimating overflow volume and clean up procedures. The has duty personnel on call, for after hour emergencies. These Duty personnel are notified via paging from North Com Dispatch. North Com Dispatch will page duty personnel if notified directly through the City s SCADA system alarm callout feature or through a call to the emergency call number. Both the voice mail at Public Works and the City s website refers callers to this number. Besides paging the two on call duty personnel, the North Com Dispatch is instructed to call the Cell numbers of the Director, or in his absence, the Deputy Public Works Director, and the Maintenance Superintendent, if the call appears to be a significant emergency, or if neither of the Duty personnel respond to the page through a call in acknowledgment of page receipt. Upon receipt of a call, Duty personnel contact their supervisor or the Department Director(s) immediately as they respond to the call. Supervisory personnel determine whether assistance in handling the spill is needed from outside agencies or additional personnel based upon initial reports from the Duty personnel. The Sheriff s Department, City Lifeguards, City s Fire Department, and neighboring City s s (MACS program) are used to support the City s. (f) 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. Public health and safety along with the environment are the City s first concern on any SSO. The City s proactive programs to perform extensive and aggressive cleaning, videoing, root control and FOG Program are the first step to prevent wastewater discharges to the waterways of the State. Staff are trained that the highest priorities are to contain the overflow and minimize, if not prevent, the overflow discharge from Section VI-3

47 reaching the waterways and eliminate exposure to the public and impact on public health. Staff use the combo hydro/vac trailer for vacuuming up discharged wastewater, contaminated debris and wash down water. The Sanitary Sewer Spill Response and Prevention Manual provides guidance to the staff in order to accomplish this objective. Section VI-4

48 SECTION VII FATS, OILS, AND GREASE (FOG) CONTROL PROGRAM 3 (vii) FOG Control Program: Each Enrollee shall evaluate its service area to determine whether a FOG control program is needed. If an Enrollee determines that a FOG program is not needed, the Enrollee must provide justification for why it is not needed. If FOG is found to be a problem, the Enrollee must prepare and implement a FOG souce control program to reduce the amount of these substances discharged to the sanitary sewer system. This plan shall include the following as appropriate: (a) An implementation plan and schedule for a public education outreach program that promotes proper disposal of FOG; (b) A plan and schedule for the disposal of FOG generated within the sanitary sewer system service area. This may include a list of acceptable disposal facilities and/or additional facilities needed to adequately dispose of FOG generated within a sanitary sewer system service area; (c) The legal authority to prohibit discharges to the system and identify measures to prevent SSOs and blockages caused by FOG; (d) Requirements to install grease removal devices (such as traps or interceptors), design standards for the removal devices, maintenance requirements, BMP requirements, record keeping and reporting requirements; (e) Authority to inspect grease producing facilities, enforcement authorities, and whether the Enrollee has sufficient staff to inspect and enforce the FOG ordinance; (f) An identification of sanitary sewer system sections subject to FOG blockages and establishments of a cleaning maintenance schedule for each section; and (g) Develop and implementation of source control measures for all sources of FOG discharged to the Sanitary Sewer System for each section identified in (f) above. In preparation for the compliance with the elements of the WDR, staff began planning and FOG program development in Below are the significant efforts by staff to reach out to the Food Service Establishments (FSEs) while modifying our existing City ordinances to add legal strength to the wastewater ordinances 2. Section VII-1

49 Calendar Year 2005, the City of San Diego assisted staff by providing a Fats Oils and Grease (FOG) inspector to inspect many of the local restaurants within the City to gauge compliance with new regulations being proposed by the State. January 3, 2006, a letter was mailed to all FSEs informing them of pending new State mandates, informing them of the Department s role and their role in sewer overflow containment and elimination, and notice of planned further inspections to assess system s existing facilities. During April and May 2006, staff prepared and mailed packets of information on the control of grease, the State mandates, and plans to develop a FOG program. Council authorized a Capital Project to fund Consultant work to assist with FOG in the Fiscal Year Operating and Capital Budget. July 26, 2007, proposals from consulting firms were received for the assistance requested to provide development of the program, provide professional inspections, and other assistance as needed. November 5, 2007, Council authorized a contract with Dudek Engineering and Environmental to assist staff with program development. January 2, 2008, a letter was mailed to Del Mar Village Association (DMVA) and all FSEs advising them of a planned workshop to be held on January 10 th at the Del Mar TV Studio. January 10, 2008, a FOG workshop was held with seventeen (17) attendees. The City has about 30 FSEs. The workshop introduced the Dudek team, informed attendees of State mandates and schedule for inspections. February 1, 2008, a follow-up letter was sent to the DMVA, and all FSEs by City Manager Karen P. Brust, providing minutes of what was discussed at the January 10, 2008, FOG workshop. February 4, 2008, staff sent a letter to all FSEs introducing the consultants who would be performing the inspections. February 6 - April 23, 2008, inspections of all FSEs were performed by Dudek. After inspections, ordinance development began. November 25, 2008, Interim Planning and Community Development Director Mooney developed guidelines for building permits for installation of new FSEs and remodels of existing FSEs, so that attention to FOG requirements would be in place with the contract building inspectors and City staff. Section VII-2

50 February 23, 2009, a letter was sent to DMVA and FSEs announcing a workshop on March 19, 2009, at the Del Mar TV Studio to discuss an attached first draft of the ordinance. March 3, 2009, a letter was sent to each FSE specifically identifying their individual inspection results and how the FSE would need to comply with the draft ordinance. Staff wanted each to be aware of how their establishment would be affected by the ordinance. March 19, 2009, thirteen (13) FSEs attended a workshop discussing the proposed ordinance. April 8, 2009, letters were mailed to each FSE noting a follow-up workshop planned for April 16, 2009, to discuss changes in the draft ordinance in response to prior workshop and further evaluation of timelines required for each FSE to comply with the ordinance. The revised ordinance language related to compliance dates was included in the mailing based upon staff development of five (5) levels. Each level stated requirements to comply with the ordinance. FSEs were grouped into these levels based upon past sewer overflows, sewer maintenance records indicating grease in sewer mains and the level of grease removal ability currently existing at the FSE. April 16, 2009, a workshop was held at the Del Mar TV Studio discussing the five (5) levels of compliance and the changes as proposed to the ordinance. Seven (7) FSEs attended. April 22, 2009, letters were mailed to each FSE describing their specific compliance level and the timeline for compliance with the ordinance. A copy of the final draft ordinance was included and the date ordinance would be presented to the City Council was also noted. On June 22, 2009, a revised ordinance was introduced at City Council and authorized by the City Council. On July 13, 2009, a second reading and approval of ordinances was approved by the City Council. The Revised wastewater ordinance became effective on August 13 th. A letter advising the FSEs of this pending Council action was also mailed to FSEs. Letters were mailed to all FSEs advising them of this final action by the City Council and the due dates for needed improvements as required by the City Ordinance. Staff continues to work with FSEs to bring them into compliance with the FOG ordinance. Section VII-3