an invitation to residents of salinas, boronda and bosa knolls to … · residents of city of...

Invitation for Public Comment On the Development and Implementation of the City of Salinas Sanitary

Sewer Management Plan

Residents of City of Salinas, Boronda and Bolsa Knolls Tributary to the Salinas Sanitary Sewer Collection System

Submit Comments To: Ron Cole Wastewater Manager 426 Work Street Salinas, CA. 93901 Email: [email protected] (Via email is preferred for comments) Office: (831) 758-7921 Admin: (831) 758-7233 The City is accepting public comment, at any time, on the Sanitary Sewer Management Plan as the plan is intended to be an evolving document subject to audit and change as necessary. Regular audits of the program are required at a minimum of every two years from plan approval. However, comments submitted after April 14, 2009, will be considered in future amendments to the Management Plan as the Management Plan is expected to be approved by City Council on May 5, 2009. Background The City of Salinas is inviting public comment on the development and implementation of the City’s Sewer System Management Plan, also called an SSMP. The SSMP describes the activities that a public wastewater agency uses to manage its wastewater collection system effectively. The development of the City's SSMP was required when the State Water Resources Control Board (SWRCB) adopted the Statewide General Waste Discharge Requirement (GWDR), Order No. 2006-000, on May 2, 2006. The invitation to comment is open to all Salinas residents and residents of the Boronda and Bolsa Knolls communities tributary to the Salinas Collection System. Comments should be received by April 14, 2009 for inclusion in the adopted SSMP. Comments may be made at any time thereafter for consideration in future amendments to the ongoing management program as the SSMP is intended to be a living document. If you would like to participate in this process please use the contact information included at the top of this document.

mailto:[email protected]

CITY OF SALINAS

SSMP Plan and Development The City is required to develop a plan and schedule for development and implementation of the SSMP. The following plan and schedule was approved by the City Council on March 10, 2009. Each of the 12 elements to be included in the Plan are indicated in the table with a general description of what is required to be included in the element. If you are interested in commenting on any of the Plan Elements please use the contact information listed. In the pages following the Plan and Schedule, the 2007 Annual Report for the Sanitary Sewer Management Plan required under the City’s previous WDR Permit is included to be used as a general guide to the City’s current SSMP program. The 2007 Annual Report will be used as a guide for the new SSMP outlined in the table below.

SSMP Development Plan & Schedule Sanitary Sewer and Industrial Waste Collection Systems

Task Element

Criteria

Date To

Complete

Responsible

Person

Contact

Information

SSMP Development Plan & Schedule

Initial plan on developing & implementing SSMP

03/10/2009

Ron Cole Wastewater Manager

(831) 758-7921 [email protected]

1. Goal Stated goals for SSMP

05/02/2009 Ron Cole Wastewater Manager


2. Organizational Structure

Names & Staff positions responsible of developing and implementing the SSMP

Chain of communication for SSO reporting



CITY OF SALINAS

3. Legal Authority

Demonstration of Legal Authority to operate and maintain sewage collection system



4. Operation and Maintenance Program

To include: Update mapping of Collection Systems

Preventative Maintenance Program

Rehabilitation & Replacement Program

Collection System Inspection Program

Operation and Maintenance Staff Training

Maintain critical Equipment & Replacement Parts Inventory



5. Design and Performance

To include: Design standards for new & rehabilitated systems

Inspection & testing standards for new and rehabilitated systems



6. Overflow Emergency Response Program

Written Procedures for response to SSO’s



CITY OF SALINAS

7. Fats, Oils & Grease (FOG) Control Program

Program to reduce or eliminate FOG related Sanitary Sewer Overflows



8. System Evaluation and Capacity Assurance Plan

Capital Improvement Plan for hydraulic capacity including system evaluation for portions experiencing capacity related overflows



9. Monitoring Measurement & Program Modification

Maintain records, monitor and assess effectiveness of SSMP; update as necessary



10. SSMP Audit Plan

Schedule of periodic SSMP audits, at least every two years



11. Communication with Public and Agencies

Communication Plan to public and satellite areas with drainage to collection system on development, implementation & performance of SSMP



CITY OF SALINAS

12. Final SSMP Incorporates all elements of the SSMP for implementation. Governing Body approval of final SSMP is required by the WDR.



2007 Sanitary Sewer Management Program - Current Operational Program: The following is the 2007 Sanitary Sewer Management Plan Annual Report that was submitted to the Central Coast Regional Water Quality Control Board. The Annual Report was required under the City’s previous Waste Discharge Requirements Permit and will be used as a guide in the Development of the new Sanitary Sewer Management Plan. 2007 SSMP Annual Report Begins on Next Page.

CITY OF SALINAS

City of Salinas

Sanitary Sewer Management Plan for WDR R3-2002-0078

Attachment B

Part B-III Legal Authority

Part B-IV Measures and Activities

Part B-VII Overflow Emergency Response Plan

Part B-IX Capacity Evaluation

Part B-V Design and Performance Provisions

Part B-VIII Source Control Program

*(Requested Report Extension Date – March 4, 2008 (RWQCB)

January 30, 2008

City of Salinas – MAINTENANCE SERVICES DEPARTMENT

426 Work Street • Salinas, California 93901 • (831) 758-7233

January 30, 2008 State of California Regional Water Quality Control Board Central Coast Region Attention: Roger Briggs 895 Aerovista Place, Suite 101 San Luis Obispo, CA 93401-7906 SUBJECT: City of Salinas WDR R3-2002-0078

Dear Mr. Briggs The City of Salinas is pleased to submit the enclosed Sanitary Sewer Annual Report for 2007. This submittal is intended to be a dynamic document that serves as a framework for implementation the Sanitary Sewer Management Plan under WDR R#-2002-0078. The report addresses the following elements of the Attachment B Sanitary Sewer Management Plan:

• Part III – Legal Authority; • Part IV – Measures and Activities; • Part VII – Overflow Emergency Response Plan; • Part IX – Capacity Evaluation; • Part V – Design and Performance Provisions; and • Park VIII – Source Control Program.

Respectfully Submitted, Ron Cole, Wastewater Manager Maintenance Services

cc: Denise Estrada, Maintenance Services Director

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Sanitary Sewer Collection System Summary

State of California Water Quality Control Board. WDR R3-2002-0078

The City maintains approximately 270 miles of sanitary sewer collection system pipeline and 11 Sanitary Sewer Lift Stations. The City’s Maintenance Services Department, Wastewater Division, under the direction of the Maintenance Services Director, is responsible for operation and maintenance of the City’s sanitary sewer collection system. The City’s Wastewater Manager is the lead person to plan and implement these responsibilities. Current City staffing for operation and maintenance of the sanitary sewer system includes 8.25 full time equivalent (FTE) employees. The Wastewater Division has 11.75 FTE additional staff that are funded through storm sewer, industrial waste or street sweeping programs. All wastewater staff are available for support of the sanitary sewer program. The employees may also perform other functions for the storm sewer and industrial waste systems. Employees with the Wastewater Division are trained in spill response and containment, illicit discharge detection and reporting, confined space entry, CPR and First Aid.

In 2007, the City continued as a participating member of the Southern Monterey Bay Dischargers Group. The membership is by way of contractual agreement with the Monterey Regional Water Pollution Control Agency to assist with a regional comprehensive public education program. Members in the 2007 program include *the Cities of Salinas, Pacific Grove and Monterey, the Seaside County Sanitation District, Marina Coast Water district, Castroville Water district, County of Monterey, Pebble Beach Community Service District, Carmel Area Wastewater District, and the California American Water Co. *see Appendices to Part B-VIII Source Control Program. The 2007 grease education and outreach program included theater ads, radio advertising and printed ads. Grease awareness has increased quite a bit since we began the grease outreach programs in 2003. The programs customer surveys indicate in 2002 about 30% of the population was not aware of proper grease disposal methods. However the most recent surveys now show only 14% of respondents are not aware that grease is the leading cause of sewer spills. This is an improvement of three percent for the City of Salinas over the 2006 survey results. This is quite an improvement over the life of the program and can potentially be seen in fewer sanitary sewer system overflows. New to the grease program in 2007 include a potentially wider audience with print ads, internet ads, radio ads, movie ads and the development of a website “clogbusters.com” with grease education information and links to member agencies. Web site statistics are enclosed with this document as Attachment E.

In 2007, the City reached a contractual agreement and established a scope of work with the Monterey Regional Water Pollution Control Agency to provide source control grease trap

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inspections of local restaurants and other food service/preparation establishments. Sufficient funds have been approved for this service contract. The agreement was approved by the City

Council in April 2007 joining other local agencies with grease trap inspection agreements with the MRWPCA. Inspections will include an initial inspection to establish the grease control inventory of the facilities and Best Management Practices (BMPs) educational guidance with a follow-up inspection for compliance. The scope of work is tentatively based on the Pacific Grove model and may be modified to address situations specific to Salinas. Since the contract was signed by the City of Salinas and MRWPCA for assistance with the Grease WDR Program in April 2007, the MRWPCA Source Control Division has been performing the following tasks which are included in the contract scope of work or are in direct support of this program:

� Review of all food preparation facility plans that are submitted to the City plan center for remodel or new construction

� Working with architects, mechanical engineers and property owners on proper sizing of grease pretreatment equipment

� Conducting on site inspections for new grease pretreatment installations

� Responding to business owner requests for information, guidance, and education concerning their grease pretreatment equipment and BMPs for their facility

� Responding to grease trap or interceptor failures, overflows and businesses being investigated by the City Code Enforcement

� Providing reminders of interceptor pump out deadlines for all food preparation facilities within the City

� Compiling an updated list of food preparation facilities for the Grease Program data base

� Developing a draft Program introduction letter for future mail out

Future tasks will include surveying/inspecting each food preparation facility for actual pretreatment on site and generating requirement letters or in compliance letters for each facility.

Sewer projects continued in 2007 following major projects completed in 2006 that included the completion of the 7.5 million dollar replacement of the Rossi/Bridge Street sewer trunkline and the $646,000 replacement of 1,600 ft of sewer main on Kern Street from a recommendation from wastewater maintenance staff. In 2007 the City completed the rehabilitation of deteriorated manhole structures on the Romie Lane - South Main Street Trunk Lines at a project cost of $161,000. The City has neared completion for the installation of backup power generators to

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three additional sanitary sewer lift stations. With these new installations there will be seven of the City’s 11 sanitary sewer lift stations protected from power failures with backup generators. The priority for the new installations was given to stations with the highest flow volumes. This project began in 2007 at an estimated cost of $525,000. An additional project to install flow meters at these same three stations will be implemented in 2008.

Due to potential for sanitary sewer overflows, pollutants of concern include raw sewage, bacteria and other chemical waste illegally placed in the waste stream. Due to concerns for public health and potential environmental impacts the sanitary sewer collection system is given a High Priority status. In response to the high priority status The City maintains a comprehensive maintenance schedule for collection system pipes and for sanitary sewer lift stations. The City has also developed a written spill response plan that is a guide for sanitary sewer and other hazardous spills. Spill responses depending on severity and notification procedures are a collaborative effort that may involve response by the Maintenance Services Department in conjunction with the Salinas Fire Department, Monterey County Environmental Health and other state and local agencies as determined.

Objectives to be considered in prioritizing activities include:

Prevent any discharges from reaching surface waters. Surface waters that may be affected by discharges from the City include: Santa Rita Creek, Gabilan Creek and tributaries, Natividad Creek and tributaries, Markley Swamp, Reclamation Ditch 1665, and the Salinas River.

Prevent discharges from reaching the storm drain system and completely contain and clean any discharges that do reach the storm drain system before such discharges reach surface waters.

Prevent dry weather overflows from public sewers.

Prevent wet weather overflows from public sewers.

Prevent overflows from private laterals.

The City maintains sanitary sewer overflow records in accordance with Regional Water Quality Control Board requirement under WDR R3-2002-0078.

To insure continued system operation regarding the City’s 11 sanitary sewer lift stations the City maintains 5 portable towable diesel powered generators to provide emergency power to lift stations not equipped with permanent on-site electrical generators. Four of the highest flow stations are equipment with permanent backup generators with three more within 60 days of completion for installation. This gives effective coverage of all sanitary lift stations and reduces the potential for overflows during power outages. The pump stations are generally inspected daily. The City has a pump maintenance mechanic record book to log maintenance activity at the sewer pump stations. Routine maintenance includes but is not limited to: inspection of

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electrical panels, pump and level controls, air compressors, wet well and dry well conditions and pump motor operation.

The City keeps an inventory of key replacement parts for the sewer lift stations, so breakdowns and malfunctions can be repaired quickly to avoid potential overflow situations. A spare motor controller, air compressor, alarm dialer, air lines and misc. minor parts are kept in inventory for repairs to lift stations. A lift station maintenance truck with an overhead lift boom and power winch is used to carry a full complement of tools and minor repair parts. A backup 30 horsepower pump motor is kept for emergency backup of the highest flow station at Lake Street. In 2007, several backup motors were purchased for additional emergency coverage at other lift stations. Spare manhole risers and covers are kept in inventory for repairs in the streets. Emergency contact numbers for local parts vendors and contractors are kept for emergency response to pipeline and other system repairs

The City owns the necessary equipment to respond to most overflow situations. This equipment now includes three hydro/vacuum trucks, a towable pump, temporary bypass hoses, and portable generators. The City secured funds in 2006 to purchase a new hydro-vac truck that was delivered in March 07. This has brought additional stability to the City’s sewer maintenance program. The City also maintains 24-hour contacts and informal agreements with many contractors and businesses that can be called in response to a major event. The City keeps key materials on-site at the City Yard to respond quickly to overflows. Sandbags and sandbagging material, absorbents, absorbent booms and pads are kept for containment and cleanup. Pipeline plugs for pipe sizes of 6 inches to 24 inches are kept on site for containment and repairs. A 6 inch pump and flexible hosing are kept in inventory for local bypass operations or pumping of overflows back into the sanitary sewer.

Alarm systems are installed at the lift Stations. These alarms are integrated into the phone system of each lift station and calls out to Monterey County Communications (911) with alarm information. During daytime work hours the Maintenance Services Departments Dispatch Operator is notified at the Maintenance Services Yard and communicates the alarm to appropriate personnel by radio or pager. First responder response time during daytime work hours is typically 5 to 15 minutes. The City of Salinas, Public Works, provides 24-hour on-call personnel that are trained to respond to all types of emergencies, including sewer main line blockages and overflows from public or private properties. During off duty hours and weekends, County Communications and other designated responders are provided with a callout sheet of emergency numbers and contact numbers to the 24 hour on-call person for Maintenance Services for emergency response. Response time during off duty hours is typically within 30 minutes of receiving call. The City’s on-call personnel have the necessary communications equipment for additional contact of City personnel, as needed, up to and including the declaration of a local emergency. Initial response staff available is the 12 member Wastewater Division Staff with additional support available from the 13 member Street Maintenance Division. Additional staffing if needed of 50 plus members from other Maintenance Divisions and Parks and Recreation Personnel located at the City Public Service Yard. The central location for information is located at the Public Works Service Yard, at 426 Work Street, Salinas, Ca. 93910.

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General BMP guidelines are documented in CASQA Water & Sewer Utility Maintenance SC-76 which include but are not limited to :

• Clean sewer lines on a regular basis • Establish a routine and hot spot maintenance program • Identify areas needing repair or maintenance • Prioritize repairs. (pipelines 18” and above have been televised and major repairs were

completed in 2006 under a 24 million dollar multi year repair plan. • Review previous maintenance history to help identify “hot spots” or areas with frequent

maintenance problems and locations of potential system failure. • Identify and track sanitary sewer discharges • Identify dry weather and wet weather infiltration/inflow. (The City conducted wet

weather flow metering during the 2005/06 wet weather season and is currently monitoring wet weather flow for the 2007/08 winter season to assist in identifying infiltration/inflow)

• Disinfection of sewage overflow areas and restrict cleanup materials from entering storm system.

• Identify source of the spill • Maintain appropriate records • Develop notification procedures regarding spill reporting • Public education component for grease related source control

A review of the City’s current and ongoing Sanitary Sewer Management Plan indicate that the program is effective and continues to effectively address and reduce the potential for sanitary sewer overflows. The management plan will be further enhanced by increased activity in the coming year with the implementation of the restaurant grease trap inspection program.

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Contents


WDR Requirements......................................................................................................... B-III-1 Summary of Existing City Authority............................................................................ B-III-1 Existing City of Salinas Legal Authority ...................................................................... B-III-2

Interagency Agreement with MRWPCA............................................................. B-III-2 City Code Ch. 36 Industrial Waste, Wastewater Collection & Discharge .. ... B-III-2 City Resolution for Installation of Sewer Laterals.............................................. B-III-3 MRWPCA Ordinances 92-02 and 93-03 ............................................................... B-III-4 MRWPCA Regional Grease Program .................................................................. B-III-7 City Design Standards and Standard Specifications.......................................... B-III-8

Part B-IV Measures and Activities WDR Requirements.........................................................................................................B-IV-1 Maintenance Facilities, Equipment and Replacement Parts......................................B-IV-2 Map of Collection System...............................................................................................B-IV-3 Prioritization of Activities ..............................................................................................B-IV-5 Preventive Operation & Maintenance Activities ........................................................B-IV-6 Rehabilitation Plan ..........................................................................................................B-IV-9 Training...........................................................................................................................B-IV-13 Response to Overflows from Private Property..........................................................B-IV-15 Disposal of Grease and Fats .........................................................................................B-IV-16

Appendix A - Sanitary Sewer Lift Stations .......................................................B-IV-18 Appendix B – Sewer Pump Maintenance Inspection Record .........................B-IV-19 Appendix C – Daily Sewer Maintenance Log...................................................B-IV-22 Appendix D – Sewer Manhole Inspection Maintenance Checklist................B-IV-23 Appendix E – Monthly Summary Report for Wastewater Division..............B-IV-30 Appendix F – Monthly Hot Spot List.................................................................B-IV-32

Part B-VII Overflow Emergency Response Plan WDR Requirements........................................................................................................B-VII-1

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City of Salinas Overflow Emergency Response Plan ................................................B-VII-1

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Part B-IX Capacity Evaluation WDR Requirements......................................................................................................... B-IX-1 Identification of Deficiencies.......................................................................................... B-IX-1 Phased Rehabilitation Program ..................................................................................... B-IX-2 System Evaluation .............................................................................................. B-IX-4 Capacity Enhancement Measures .................................................................... B-IX-5

Part B-V Design and Performance Provisions WDR Requirements.......................................................................................................... B-V-1 City of Salinas Design Standards & Standard Specifications ..................................... B-V-1 System Performance Measures....................................................................................... B-V-2

Part B-VIII Source Control Program WDR Requirements...................................................................................................... B-VIII-3 Background on City Grease Program........................................................................ B-VIII-3 Cooperation with MRWPCA Source Control Program .......................................... B-VIII-4 Maintenance Program for Grease Control ................................................................ B-VIII-5 Commercial Source Control Program........................................................................ B-VIII-5 Staffing for Source Control Efforts ............................................................................. B-VIII-7 Residential/Public Education Outreach ................................................................... B-VIII-7 Alternative Disposal Methods .................................................................................... B-VIII-9

Appendices

Appendix A – Grease Interceptor/Grease Trap Maintenance Procedure for Food Preparation Facilities ............................................... B-VIII-11 Appendix B – Public Education/Media Releases ......................................... B-VIII-14 Appendix C – Public Outreach Program and Schedules ............................. B-VIII-24 Appendix D - Grease Source Control Inspection Program.......................... B-VIII-29 Appendix E - Monterey County Fair Grease Awareness Survey.………...B-VIII-59 Appendix F - Sanitary Sewer Attachment 2 Overflow Reports 2007…..B-VIII-240

B-III-1

City of Salinas WDR R3-2002-0078 Attachment B Sanitary Sewer Management Plan Part B-III Legal Authority

WDR R3-2002-0078 Requirements for Legal Authority The WDR requirements in Attachment B - Part III Legal Authority include legal authority to:

1. Control infiltration and connections from inflow sources, including satellite systems.

2. Require that sewers and connections be properly designed and constructed.

3. Ensure proper installation, testing, and inspection of new and rehabilitated sewers and service laterals.

4. Limit fats and greases and other debris that may cause blockages in the sewer collection system.

5. Implement the general and specific prohibitions of the national pretreatment program under 40 CFR 403.5.

Summary of Existing City of Salinas Authority As described in this section, the City of Salinas has adequate existing legal authority to meet the WDR requirements for its sanitary sewer collection system. The City under agreement receives flows from the unincorporated Boronda community located to the northwest of the City and a limited area of the Bolsa Knolls community located t the north of the City. This authority derives from the City Charter, the City Code and the City Design Standards and Specifications, and by incorporation of all MRWPCA regulations into the City Code.

Currently, the sanitary sewer and industrial sewer requirements are addressed in two separate chapters of the City Code. Additional requirements are established through City Council resolution. While the City currently has adequate legal authority to regulate and to monitor its sanitary sewer and industrial sewer, City staff are considered whether to develop a single comprehensive ordinance (chapter) to address all aspects of the sanitary sewer collection system.

Through a Regional Pretreatment Program and Regional Oil and Grease Program, the City has historically delegated authority and responsibility for the application and enforcement of various aspects of the pretreatment program (source control) to the Monterey Regional Water Pollution Control Agency (MRWPCA) under a joint powers agreement It is anticipated the City’s relationship with MRWPCA will continue and City staff will continue to develop specific policies, procedures and requirements for design, maintenance and operation of grease traps or other devices.

City of Salinas WDR R-3-2002-0078 Attachment B – Elements of Sewer System Management Plan


B-III-2

Existing City of Salinas Legal Authority Interagency Agreement with MRWPCA The City of Salinas sanitary sewer collection system is tributary to a regional treatment facility owned and operated by the Monterey Regional Water Pollution Control Agency (MRWPCA or Agency). In 1979, the City joined with other cities in Northern Monterey County to adopt an interagency agreement forming MRWPCA.

The joint powers agreement calls for MRWPCA to acquire, construct, and operate facilities for the collection, transmission, treatment, disposal and reclamation of sewage and wastewater for the benefit of lands and inhabitants with their respective boundaries. Under this agreement MRWPCA is obligated to undertake and to implement the common power and authority of its members to study, plan for, design, construct and operate regional wastewater treatment facilities for the North Monterey County area. The joint powers agreement enables MRWPCA to levy wastewater charges and fees to fulfill its responsibilities.

City Code Chapter 36 – Industrial Waste, Wastewater Collection and Discharge Chapter 36 of the Salinas City Code – Industrial Waste, Wastewater Collection and Discharge regulates the City’s sanitary sewer collection system and the industrial wastewater system. Chapter 36 contains the following relevant regulations for the sanitary sewer system:

Section 36-1 acknowledges that the City’s sanitary sewer collection system is tributary to the MRWPCA treatment facility. It states that MRWPCA implements a pretreatment program for its member jurisdictions (including the City of Salinas).

Section 36-11 requires that all private sewage disposal system conform with the city plumbing code currently in effect.

Section 36-12 requires that a City permit be issued for all connection to or use of the public sanitary sewer system.

Sections 36-12.1 and 36-12.2 state that final approval for a sanitary sewer permit is contingent upon compliance with the requirements of the MRWPCA and that all dischargers into the sanitary sewer must comply with all discharge requirements of the MRWPCA.

Section 36-16 requires that design and construction of building sewers conform to the requirements of the city plumbing code and the City Design Standards and Standard Specifications currently in effect at the time of installation. (Elsewhere in the City Code, the California Plumbing Code is adopted by reference.)

Section 36-18 requires that the connection of building sewers to the public sewer must conform to the requirements of the city building and plumbing code currently in effect (California Plumbing Code) and to the city design standards and standard specifications currently in effect. All such connections must be made gastight and watertight. Therefore,



B-III-3

infiltration of tree roots into a building sewer laterals are presumed to be caused by improper installation and must be repaired at the property owner’s cost.

Section 36-19 requires that the applicant for a building sewer permit notify the Chief Building Official when the building sewer is ready for inspection and connection to the public sewer. The connection must be made during the presence and under the inspection of the chief building official or their representative.

Section 36-20.1 states that hazardous waste and other unacceptable waste not permitted to be discharged into the public sewer must be transported to a state-approved disposal site.

Section 36-20.2 prohibits discharge of any substances directly into a manhole or other opening in the collection system other than through an approved building sewer unless approved by the director.

Section 36-31 requires that grease traps (grease, oil, wax and sand interceptors) be provided when, in the opinion of the director, they are necessary for the proper handling of liquid wastes, sand or other harmful ingredients. All interceptors must be of a type and capacity approved by the director and located so as to be readily and easily accessible for cleaning and inspection. Failure by the owner to clean and maintain the interceptors is sufficient cause for punitive action as provided in the chapter, or for disconnection from the industrial sewer.

City Resolution No. 11648 for Installation of Sewer Laterals Resolution No. 11648 establishes rules and regulations for the installation of sewer laterals in the City. Relevant rules include:

The rules specify a minimum lateral size and requirements for larger sizes when additional capacity is needed.

All plumbing work for sewer laterals must meet the minimum standards of the current Plumbing Code.

Sewer laterals must be inspected and installation approved by a City representative before they are backfilled.

Maintenance of laterals and appurtenances is the responsibility of the property owner. Any leaks or openings that allow water drainage or storm water to enter the system must be promptly repaired.

Connection of storm drain facilities, such as catch basins, sumps, downspouts, outside drains and laterals, to the sanitary sewer system is expressly prohibited. Except with specific written approval of the City Engineer, no yard drainage can be discharged to the sanitary sewer. The City Engineer shall not give this approval unless other material is in the runoff that would pollute the water in the storm drains. In such instance, the amount of drainage entering the sanitary sewer shall be kept to a minimum. Industrial waste is prohibited from discharge into the sanitary sewers, without specific written approval of the City Engineer.



B-III-4

Sewer laterals between the main line and the property sewer must be constructed according to the Standard Specifications currently in effect, including watertight joints.

MRWPCA Ordinances 92-02 and 93-03 The City of Salinas Code expressly requires that all dischargers to the municipal sanitary sewer system (community sewer) must comply with all MRWPCA (Agency) requirements. The applicable MRWPCA requirements in Ordinances 92-02 and 93-03 are listed below. Ordinance 92-02 (1992) establishes regulations for the interception, treatment and disposal of sewage and wastewater. Ordinance 93-03 (1993) amended certain limitations on wastewater strength provided in Ordinance 92-02.

Section 1.02 states that this Wastewater Discharge Ordinance is the legal authority which sets uniform requirements for discharges into the wastewater collection and treatment system of the Agency and all tributary collection systems and enables the Agency to comply with the administrative provisions of the Clean Water Grant Regulations, and specifically incorporates and enforces National Categorical Pretreatment Standards as defined in 40 CFR 403 “General Pretreatment Regulations for Existing and New Sources of Pollution”.

This Ordinance also enables the Agency to comply with water quality requirements set by the Regional Water Quality Control Board of the State of California and all applicable effluent limitations, national standards of performance, toxic and pretreatment effluent standards, and other discharge criteria required or authorized by state or federal law.

Section 1.03 definitions that apply to relevant discharge prohibitions include:

- National Categorical Pretreatment Standards – any regulation containing pollutant discharge limits promulgated by EPA in accordance with section 307(b), (c) and 402 (b)(8) of the Federal Act (33 U.S.C. 1347) and 40 CFR 403 “General Pretreatment Regulations for Existing and New Sources of Pollution” which applies to a specific category of industrial users.

- National Pretreatment Standard, Pretreatment Standards– any regulation containing pollutant discharge limits promulgated by EPA in accordance with section 307(b), (c) and 402 (b) (8) of the Federal Act (33 U.S.C. 1347) incorporated in 40 CFR 403 “General Pretreatment Regulations for Existing and New Sources of Pollution” which applies to industrial users including prohibitive discharge limits pursuant to 40 CFR 403.5.

Section 2 contains general and specific prohibitions to prevent pollutants from being introduced into the regional treatment plant or community sewer. The prohibitions include:

- Any solid or viscous pollutants in amounts that would cause obstruction to the flow in the plant resulting in interference,

- Any wastewater containing toxic pollutants in sufficient quantity, either single or by interaction with other pollutants, to exceed the limitation set for in a National Categorical Pretreatment Standards. A toxic pollutant includes, but is not limited to, any pollutant identified in Section 307(a) of the Federal Act.



B-III-5

Section 2.03 and 2.04 state that storm water, groundwater, rain water, street drainage, subsurface drainage or yard drainage, or unpolluted water shall not be discharged through direct or indirect connections to a community sewer unless a permit is issued by the Agency. The Agency may approve such discharge only when no reasonable alternative method of disposal is available.

Section 2.07 contains limitations on the use of garbage grinders except from wastes generated in preparation of food normally consumed on the premises, or where the user has obtained a permit for the specific use from the Agency. Such grinders must shred the waste to a degree that all particles will be carried freely under normal flow conditions in the community sewer.

Section 2.10.2 prohibits any person from discharging any wastewater containing oil and grease of animal, vegetable, petroleum or mineral origin in such quantities to cause or to contribute significantly to: 1) disruptions of sewer lines and other collection system components; 2) interference with treatment plant operations, or 3) exceedances of plant NPDES discharge limitations. Significant dischargers of oil and grease shall implement best practicable technologies for reducing the oil and grease content of their discharges.

The MRWPCA also developed guidance to explain the oil and grease limitations in the Ordinance 93-03 amendment of 92-02, as summarized below.

- For Polar Oil and Grease (animal or vegetable): o Oil/grease concentration less than or equal to 300 mg/L – no action required.

o Oil/grease concentration greater than 300 mg/L but less than or equal to 450 mg/L – MRWPCA will increase monitoring or require self-monitoring of the waste stream to determine if a trend exists. The industrial or commercial facility will be required to implement source control or waste minimization measures.

o Oil/grease concentration greater than 450 mg/L is a significant discharge. The industrial or commercial facility is required to self-monitor the waste stream, install pretreatment equipment using Best Practicable Technology (BPT), implement measures to reduce the specific pollutant level to below 450 mg/L, or cease the process that is causing the excessive animal/vegetable oil and grease concentration.



B-III-6

- For Non-Polar Oil and Grease (petroleum or mineral): o Oil/grease concentration less than or equal to 100 mg/L – no action required.

o Oil/grease concentration greater than 100 mg/L but less than or equal to 150 mg/L – MRWPCA will increase monitoring or require elf monitoring of the waste stream to determine if a trend exists. The industrial or commercial facility is required to implement source control or waste minimization measures.

o Oil/grease concentration greater than 150 mg/L is a significant discharge. The industrial or commercial facility will be required to self –monitor the waste stream, install pretreatment equipment using Best Practicable Technology (BPT), implement measures to reduce the specific pollutant level below 150 mg/L, or cease the process that is causing the excessive petroleum/mineral oil and grease concentration.

Section 2.10.3 requires that all National Categorical Pretreatment Standards, upon their promulgation, shall apply in any instance where they are more stringent than those in the Ordinance.

Section 2.10.4 requires that all wastes not permitted to be discharged into the community sewer must be transported to a state approved disposal site.

Section 2.11 requires that all new sewers and connections to the community sewer shall meet all design requirements of the public entity member of the Agency having area jurisdiction in questions, pursuant to the applicable Uniform Pluming Code adopted by said member, and shall also meet all design requirements as may be established from time to time by the Agency Engineer.

Article 4 of the Ordinance specifies requirements for wastewater discharge permits for industrial and commercial users. Permits address wastewater characteristics and requirements, charges and fees, requirements for installation of inspection and sampling facilities; pretreatment requirements; specifications for monitoring programs, reporting and recordkeeping requirements.

Article 4.07 gives the Agency the authority to inspect the facilities of any user to ascertain whether the purpose of the Ordinance is being met and all requirements are being complied with, and to conduct any sampling or metering operations as necessary.

Section 4.08 requires that users shall make wastewater acceptable under the limitations established by the Ordinance before discharging into any community sewer. Any facilities required to pretreat wastewater to a level acceptable to the Agency shall be provided and maintained at the user’s expense. Detailed plans showing the pretreatment facilities and operating procedures shall be submitted to the Agency for review, and shall be approved by the Agency before construction of the facility. The user is responsible for modifying the facilities as needed to continue to meet the requirements of the Ordinance. Any subsequent changes in the pretreatment facilities or method of operation shall be reported to and be approved by the Agency.



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Articles 6 and 7 provide for enforcement and abatement authority for the Agency to enforce all provisions of Ordinances 92-02 and 93-03, and to abate any public nuisance, violation of the ordinance, damage to the regional facility, and allows the Agency to correct violations and recover the costs from the user.

MRWPCA Regional Grease Program MRWPCA, on behalf of its member jurisdictions including the City of Salinas, has a Regional Grease Program. The purpose of the Regional Grease Program is to reduce the amount of grease entering the sanitary sewer system from food serving establishments. The program incorporates the need for proper cleaning and maintenance of grease interceptors and grease traps located at such establishments. The report section on Part B-VIII Source Control Program discusses the City’s current and proposed source control program for grease, fats and oils.

MRWPCA authority for the Regional Grease Program is derived from Ordinance 92-02 and its 93-03 amendment. City of Salinas City Code Chapter 36 expressly requires that all users within the City comply with all MRWPCA regulations. MRWPCA reviews grease interceptors and traps proposed on building plans.

The MRWPCA Source Control Division is responsible for ensuring that every industry and commercial business activity in the MRWPCA service area is providing the proper pretreatment for their wastewater as mandated by the Regional Water Quality Control Board, Environmental Protection Agency as well as MRWPCA Sewer Use Ordinance 92-02.

The following requirements are posted by MRWPCA for “Grease Interceptor/Grease Trap Maintenance Procedure for Food Preparation Facilities.”

Grease interceptors shall be completely pumped (i.e., dry pumped removing the grease mat, liquids, sludge and wash down material from the interior walls).

Grease traps shall be completely pumped (i.e., dry pumped removing the grease mat, liquids, and solids from walls, screens, baffles and air relief chambers).

Any problems/damage with the interceptor/trap must be reported to the business manager/owner and the MRWPCA Source Control Division (e.g., missing or broken baffles, screens, and pipes).

Discharge of wastes pumped from a grease interceptor/trap back into the sanitary sewer or the clean interceptor/trap is prohibited.

Bacteria products used in the maintenance of interceptors or traps must be pre-approved by the MRWPCA. Such products are addressed in a 1995 interagency agreement on the use of grease trap and grease interceptor additives signed by MRWPCA, the Cities of Santa Cruz and Watsonville, the Santa Cruz County Sanitation District, and the Carmel Area Wastewater District.



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The MRWPCA website also provides educational information for users on how a grease trap operates and on cleaning grease traps.

City of Salinas Design Standards & Standard Specifications Detailed information on design standards and standard specifications for sewer system improvements is contained in the City’s Design Standards and Standard Specifications. These Design Standards and Standard Specifications must be complied with as specified in Chapter 36 of the City Code.

The City Code also incorporates, by reference, the California Building Code and the California Plumbing Code. These codes apply to all public and private improvements.

The City’s Design Standards and Standard Specifications cover:

Criteria for design flows and sewer sizing.

Minimum sewer sizes of 8-inches for public sewers, except that 6-inch may be approved for lines with ultimate maximum of twenty single-family units or less.

Criteria for sewer slopes, alignments, depths, and manhole spacing.

Requirements for lateral connections to sewer mains in accordance with Standard Plans 24, 30 and 33. Criteria also include minimum lateral size of 4-inches, and requirement for a lateral cleanout at property line.

Requirements for manholes in accordance with Standard Plans 22, 23 and 24.

No roof drains or storm water inlets shall be connected to sanitary sewers.

Upon completion of 6-inch and greater sewers within public easements and right-of-way, all sections of pipe must be checked with television equipment and air tested prior to acceptance by the City. The purpose of the checking and testing is to determine leaks and also prevent infiltration.

The City’s Design Standards and Standard Specifications were updated in 2004 to reflect current municipal engineering practices and metrication. Future updates will consider other appropriate changes to the design standards that may be needed to comply with and/or provide guidance for future local legislation.

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City of Salinas WDR R3-2002-0078 Attachment B Sanitary Sewer Management Plan Part B-IV Measures and Activities WDR Requirements for Measures & Activities The WDR requirements in Attachment B – Part IV Measures & Activities require that the Sanitary Sewer Management Plan address the element listed below, as appropriate and applicable to the sewer system, and identify the person or position in the organization responsible for each element.

A) Provide adequate operation and maintenance facilities and equipment.

B) Maintain an up-to-date map of the collection system showing all gravity line segments and manholes, pumping facilities, pressure pipes and valves, and storm water conveyance facilities.

C) Maintain relevant information to establish and prioritize appropriate Sewer System Management Plan activities, and identify and illustrate trends in overflows, such as frequency and volume.

D) Routine preventive operation and maintenance activities by staff and contractors; including a system for scheduling regular maintenance and cleaning of the collection system with more frequent cleaning and maintenance targeted at known problem areas as well as a tracking system for work orders.

E) Identify and prioritize structural deficiencies and implement short-term and long-term rehabilitation actions to address each deficiency. This shall include a rehabilitation plan including schedules for the entire system. Among the provisions that should be specified is the need to direct rehabilitation and replacement at sewer pipes which are at risk of collapse or prone to more frequent blockages due to pipe defects. The program should also include regular visual and video inspection of sewer pipes and a system for assessing and ranking the condition of sewer pipes. Finally, the rehabilitation and replacement plan should include a financial plan that properly manages and protects the infrastructure assets.

F) Provide training on a regular basis for staff in collection system operations, maintenance, and monitoring and determine if contractors’ staffs are appropriately trained.

G) Provide equipment & replacement parts inventories, identification of critical replacement parts.

H) Establish an implementation plan and schedule for a public education outreach program that promotes proper disposal of grease and fats.

I) Establish a plan for responding to overflows from private property that discharge to public right of ways and storm drains, to prevent discharges to surface waters and storm drains.

J) Develop a plan and schedule for providing an analysis of alternative methods of disposal for grease and fats, and an implementation plan and schedule for providing adequate disposal capacity for grease and fats generated within the sewer system service area. This plan shall include an evaluation of the feasibility of using sludge digesters at the regional Agency wastewater treatment plan for grease disposal and treatment, recycling, rendering, and other disposal alternatives.

WDR R-3-2002-0078 Attachment B – Elements of Sewer System Management Plan


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Maintenance Facilities, Equipment, and Replacement Parts (Items A and G) The City’s Maintenance Services Department, under the direction of the Maintenance Services Director, is responsible for operation and maintenance of the City’s sanitary sewer collection system. The City’s Wastewater Manager is the lead person to plan and implement these responsibilities.

Current City staffing for operation and maintenance of the sanitary sewer system includes 8.25 full time equivalent (FTE) employees. The employees may also perform other functions for the storm sewer and industrial waste systems. The position allocations and duties for the sanitary sewer system are as follows:

Wastewater Manager (0.5 FTE) - Provide oversight of Division activities and manage budget.

Water Resources Planner (0.5 FTE) – Provide support , planning assistance and training

Wastewater Crew Supervisor (0.5 FTE) – Supervise work crew and maintenance activities.

Public Service Maintenance Worker IV (0.5 FTE) – Lead worker, journey level position.

Pump Mechanic (0.75 FTE) – Sanitary sewer lift station pump mechanic.

Public Service Maintenance Worker III (1.75 FTEs) – Equipment operator.

Public Service Maintenance Worker II (3.75 FTEs) – Journey level maintenance worker.

The City has adequate facilities and equipment to maintain the sanitary sewer collection system. The Maintenance Services Department operates from the City’s Corporation Yard on Work Street at John Street, and the City’s TP1 Site off Hitchcock Road (site of the former City wastewater treatment plant). Maintenance equipment is stored at both locations.

Major equipment owned by the City that can be utilized for sewer system operation and maintenance includes:

Sanitary Sewer Program – 6 pickup trucks, 3 sewer vactor trucks, 1 lift truck, 1 TV van, and 5 portable (towable), generators

Storm Drain Sewer – 1 vac-all (10 cu. yd. capacity vacuum truck)

Industrial Waste – 2 tractor, 1 spray rig, 3 pickup trucks, 1 small boat and trailer to access aeration motors on the influent treatment pond.

Street Sweeping – 1 pickup, 4 sweepers



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The City maintains 5 portable towable diesel powered generators to provide emergency power to sanitary sewer lift stations not equipped with permanent on-site electrical generators. This gives effective coverage of all sanitary lift stations and reduces the potential for overflows during power outages.

The City keeps an inventory of key replacement parts for the sewer lift stations, so breakdowns and malfunctions can be repaired quickly to avoid potential overflow situations. A spare motor controller, air compressor, alarm dialer, air lines and misc. minor parts are kept in inventory for repairs to lift stations. A lift station maintenance truck with an overhead lift boom and power winch is used to carry a full complement of tools and minor repair parts. A backup 30 horsepower pump motor is kept for emergency backup of the highest flow station at Lake Street. Spare manhole risers and covers are kept in inventory for repairs in the streets. Emergency contact numbers for local parts vendors and contractors are kept for emergency response to pipeline and other system repairs

The City owns the necessary equipment to respond to most overflow situations. This equipment includes vacuum trucks, hydro/vac flushers, pumps, temporary bypass hoses, and portable generators. The City also maintains files, agreements, 24-hour contacts, and informal agreements with many contractors and businesses that can be called in response to a major event.

The City keeps key materials on-site at the City Yard to respond quickly to overflows. Sandbags and sandbagging material, absorbents, absorbent booms and pads are kept for containment and cleanup. Pipeline plugs for pipe sizes of 6 inches to 16 inches are kept on site for containment and repairs. A 6 inch pump and flexible hosing are kept in inventory for local bypass operations or pumping of overflows back into the sanitary sewer.

Map of Collection System (Item B) The WDR calls for maintaining an up-to-date map of the collection system showing all gravity line segments and manholes, pumping facilities, pressure pipes and valves, and storm water conveyance facilities. The City has various maps showing this information, although it currently is not all shown on the same set of maps. The City continues to consider the future implementation of a GIS database and mapping capability to display all the relevant information on the same maps.

The City currently has several sources of mapping for the sanitary sewer collection system. The following maps are maintained by the City’s Development and Engineering Services Department, under the direction of the City Engineer:



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Master plan map showing sanitary sewer trunk lines and sewers 10-inches and greater in diameter, City-owned sewer pump stations that are fed by the master plan pipe system, and sewershed boundaries for the master plan lines. This AutoCAD map was done for the City’s 1998 Sanitary Sewer Master Plan.

System-wide wall maps showing sanitary sewers of all sizes and manhole locations (paper maps, not electronic). These wall maps are displayed in the City’s Development and Engineering Services office at City Hall and the Wastewater Division Office at the Maintenance Services Division Corporation Yard. These maps are also reproduced in binders for field use in the sewer maintenance trucks and response vehicles. Storm sewer maps are maintained for recovery response for sewer overflows that reach the local storm system.

The wall maps are marked up periodically to reflect new sewers and changes in existing sewers, but do not reflect the most recent developments in Salinas. Complete system maps are available from as-built plans not yet incorporated into the current wall maps. The maps are being discussed for updating with a GIS system or other methodology, and will then provide all required information on one set of maps.

Improvement plans for sewers constructed in new development. The City Development and Engineering Services Department maintains copies of all sewer plans upon completion of construction and acceptance by the City. Subdivision improvement plans are filed by subdivision number.

The City is still pursuing the development of a GIS database and tracking system to identify municipal hot spot areas, sanitary sewer lines and manholes, storm system lines and storm system facilities (catch basins, retention ponds ), as well as jurisdictional inlets and outfalls. Existing municipal maintenance and overflow information may be incorporated into the database and tracking system. The computerized system will be a useful tool for sewer system asset management purposes, as well as tracking sewer maintenance activities. This will be a multi-year phased process to complete the comprehensive database and mapping. Detailed information will also be incorporated over time as the management program is implemented.

The database is expected to be linked to City street maps and other mapping information and will be able to provide comprehensive up-to-date maps of the sanitary sewer collection system and other relevant information. The system will provide a valuable tool for City staff to more easily identify trends and hot spot locations; and better plan line repair and replacement to avert unintentional discharges to the storm drain system at old and/or damaged pipe locations.

Due to funding limitations and the layoff of key personnel in 2005 the development of a GIS database/tracking system has not yet been implemented but is under consideration for future development. It is expected to take up to 5 years to fully implement, perhaps longer to include minor facilities or less critical information, depending on funding limitations. The information



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to be included in the database/tracking system will be prioritized and the implementation will occur in priority order, so that the most important information is available sooner. The responsibility for developing a GIS database/tracking system or by other methodology will be a joint effort of the Development and Engineering Services Department, Information Systems Department and the Maintenance Services Department.

Prioritization of Activities (Item C) The main goal of the Sewer Management Plan that is required by the WDR is to prevent overflows and to provide a plan and schedule for measures to be implemented to prevent overflows. Activities proposed by the City in the Sewer Management Plan will be prioritized based on their usefulness and effectiveness in meeting this goal. The City will focus its efforts on those activities that are most effective in preventing overflows.

Objectives to be considered in prioritizing activities will include:

Prevent any discharges from reaching surface waters. Surface waters that may be affected by discharges from the City include: Santa Rita Creek, Gabilan Creek and tributaries, Natividad Creek and tributaries, Markley Swamp, Reclamation Ditch 1665, and the Salinas River.

Prevent discharges from reaching the storm drain system and completely contain and clean any discharges that do reach the storm drain system before such discharges reach surface waters.

Prevent dry weather overflows from public sewers.

Prevent wet weather overflows from public sewers.

Prevent overflows from private laterals.

The City’s drinking water supply is solely from groundwater wells maintained by the California Water Service Company and Alco Water Service. This supply is not impacted by potential overflows.

The City maintains sanitary sewer overflow records in accordance with Regional Water Quality Control Board requirement under WDR R3-2002-0078. This information includes but is not limited to location, date, time, quantity of spill and cleanup activities. As this comprehensive information is collected over time, it can assist in illustrating trends in overflows, such as problem locations, frequency, and volume. The information collected to date has been useful in formulating the City’s “Hot Spot” program that is discussed in the next section.



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Preventive Operation & Maintenance Activities (Item D) The City’s maintenance program addresses the following elements to various degrees, although in an informal manner:

Predictive maintenance – tracking life span and scheduled parts replacement of key facilities;

Preventive maintenance – identifying and fixing system weaknesses which, if left unaddressed, could lead to overflows;

Corrective maintenance – fixing system components that are functioning but not at 100% capacity/efficiency, e.g., partially blocked lines;

Emergency maintenance – reactive maintenance, overflows, equipment breakdowns.

As part of the Sewer System Management Plan implementation, the City will be developing a more formalized Operation and Maintenance Plan for the sanitary sewer collection system. This plan will formalize current City activities that are passed along by long-time senior staff but are not always in writing. The maintenance plan will address the following components identified in the WDR:

System for scheduling regular maintenance and cleaning of collection system.

System for identifying known problem areas and scheduling more frequent cleaning at these locations. Priority has been given to identifying and servicing areas requiring increased maintenance over routine maintenance activities. This has resulted in an increased hotspot maintenance list. The City has incorporated more efficient cleaning methods that is anticipated to free more time for routine work.

Tracking system for recording maintenance activities. The City currently uses service request slips which are completed in response to requests for service by residents or other departments. Routine maintenance is conducted as described below according to schedules established by the Wastewater Manager and documented on maintenance forms developed by the Department. The City is still considering the development of a database from GIS or other methodology to develop as part of a Sanitary Sewer Management Plan to use for tracking maintenance activities and possibly for generating work orders as funding and resource become available to pursue this option.

Procedures for coordinating with contractors responsible for sewer system collection system cleaning and maintenance. The City does not typically contract cleaning and maintenance of the collection system. Contracting is done only for the purpose of supplementing the ongoing maintenance effort when required or because of the need for specialized equipment not in the City’s inventory. Contract work is accomplished with ongoing oversight from City staff.



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Current City maintenance activities are summarized below, followed by a discussion of some preliminary activities under consideration for the sanitary sewer management plan. Current maintenance procedures may be subject to change as more effective measures may be identified while developing and implementing the sanitary sewer management plan.

City staff currently conducts regular maintenance of the City’s sewer pump stations. Appendix A lists the sewer pump stations. As indicated in Appendix A, 4 stations have backup power. In addition, the City maintains 5 portable (towable) diesel powered generators to provide emergency power to those stations not equipped with permanent on-site electrical generators. This gives effective coverage of all sanitary lift stations and reduces the potential for overflows during power outages. Throughout 2006 the City worked to develop plans for installation of backup generators at three additional sanitary sewer lift stations. The generator installations began in 2007 with expected completion in March 2008. Priority is given to lift stations with the highest flow potential reserving towable generators for lower flow stations that present less of a threat for overflow during the loss of power to the station. To insure redundancy in the system lift stations retain towable generator hookups in the unlikely event of a permanent generator failure.

The 4 highest flow sewer lift stations are inspected daily. All other sewer lift stations are inspected two to three times weekly depending on work schedule. The City has a pump maintenance mechanic log book to log maintenance activity at the sewer pump stations. Routine maintenance includes but is not limited to: inspection of electrical panels, pump and level controls, air compressors, wet well and dry well conditions and pump motor operation. Site visits for maintenance activities are logged on the example worksheet provided below. This worksheet also includes maintenance visits performed at storm water lift stations and on miscellaneous small pumps throughout the City. In the absence of the pump mechanic other maintenance personnel are cross trained to address any lift station problems. Appendix B provides an example of the pump maintenance inspection record and maintenance checklist.

City staff conducts an extensive program of sewer cleaning and inspection that has generally focused on known problem locations, which are discussed further below. The Departments goal is to service hot spot problem areas approximately 3 days of each week, while general collection system maintenance is to be conducted 2 days weekly. Throughout the year priority is given to areas requiring increased maintenance Other maintenance may include response to problems, citizen complaints, or construction projects. A field worksheet is kept by maintenance staff to record completed maintenance activities. During 2007, City staff cleaned approximately 1,219,055 LF (the equivalent of 230 miles) of sanitary sewer pipe.

Appendices to Part B-IV Measures and Activities, provides examples of the City’s daily sewer maintenance log, sewer manhole inspection checklist, and an example monthly summary report of Wastewater Division activities for December 2007.



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The City’s Wastewater Manager maintains “Hot Spots” Lists of problem areas needing additional maintenance and cleaning. This list, developed over a long period of time, identifies problem locations for blockages that may potentially lead to overflows. There are two lists based on the required frequency of maintenance to avoid blockages – a monthly list and a quarterly list. The locations on each list are grouped by area – East Salinas, West Salinas, North Salinas and South Salinas. The list shown is the current list but is for example purposes only and is a dynamic list that is revised as needed. The lists show the specific locations to be serviced, and the length of pipe. Appendix F contains the monthly “Hot Spots” List. Appendix G contains the quarterly “Hot Spots” List. The hot spot list is updated regularly as the need for additional maintenance is identified.

City maintenance staff (2-person crew) currently conducts manhole checks one or two days per week in problem areas. The purpose is to open manholes in hot spot areas to clean slow running pipes or blockages before overflows can occur. The majority of the problem locations are in the east side of the City, primarily in smaller 6-inch pipes. This has proven to be effective activity in identifying potential system issues allowing for early resolution of identified problems.

The City’s Wastewater Division staff, which includes Sanitary Sewer, Storm Sewer, Street Sweeping and Industrial Waste Facility personnel, participate in plan reviews for new construction and improvement projects to ensure compliance with the City’s sanitary sewer requirements. The City’s Development and Engineering Services staff also review plans for compliance with all City requirements for proper design of new sewers and connections and prohibitions on inflow sources, as well as inspect construction projects to ensure that plan provisions are implemented.

As part of a System Management Plan, the City has formalized a maintenance plan through its hotspot program that will address overflows, accommodate the needs of the City, and rotate through the City over time. The City’s goal is to provide 2 days of routine maintenance each week, and 3 days of hot spot maintenance. Staff has generally deferred to hotspot and higher maintenance areas with available resources to more effectively address the programs goal to reduce or eliminate overflows. As reported in the 2005 annual report the City planned for a third hydro/vacuum truck for sanitary sewer and storm sewer maintenance. In 2006, the City funded and purchased a new hydro/vaccum truck which was delivered in March 2007. Staff is working with new cleaning methods that may reduce the overall time needed to address higher maintenance areas and with the addition of the new truck may allow the development of a more prudent routine program.

For routine maintenance, City crews will rotate through the City by area with a wall map and field maps to show areas covered. Routine maintenance will include hydro-flushing sewer lines in the area, and pressure wash manholes if needed. During all maintenance wash water is kept



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within sanitary sewer system and conveyed to the wastewater treatment plant. Pipelines and manholes are vacuumed out if necessary to prevent overflows that might reach storm drain system. All areas are prioritized for frequency of maintenance, e.g., some areas historically have few problems while others require more frequent maintenance.

As discussed earlier in this section under Collection System Map, the City’s goal is a collaborative effort by the City’s Development and Engineering Services, Information Systems and Maintenance Services Departments to establish a database/tracking system that will include the sanitary sewer system. Contract services may be used for major field work needed to complete the project. Existing municipal maintenance and overflow information may be incorporated into the database/tracking system. The database will include completed maintenance work and a record of problem areas to facilitate maintenance planning and oversight.

When established the database is expected to be linked to City street maps and other mapping information and will be able to provide comprehensive up-to-date maps of the sanitary sewer collection system, maintenance efforts, and overflows. A GIS database/tracking system is still under consideration for development and is anticipated to take several years to fully implement. Ability to develop GIS capability has been impacted by budgetary and staffing shortages with the layoff of key personnel in 2005. Although this remains a future goal of the program there is no current activity in this area. The system will provide a valuable tool for City staff to plan for preventive maintenance; more easily identify trends and hot spot locations; and better plan line repair and replacement projects.

The City evaluated appropriate actions to address infiltration/inflow from manholes and manhole covers that are in flow lines or low areas. This condition affects a small number of locations as most manholes are near the center of streets as rainwater drains away from the covers and is not considered to offer infiltration of significant concern. Applicable locations and actions will be assessed during routine maintenance activities and steps taken to seal or reduce the potential for infiltration/inflow to the sewer system at affected locations. To date, the City has placed manhole lids with watertight lids in low areas of water retention such as the Carr Lake storm water detention area to reduce infiltration/inflow. The City also routinely replaces broken lids and raises manhole lids to grade. A flow study with flow meters installed at various locations within the sanitary sewer system were installed in strategic locations in FY 05/06 and were recently re-installed to capture a portion of the 2007 wet weather season in an effort to determine system infiltration and inflow.

Rehabilitation Plan (Item E) The City has made an extensive effort to identify and correct collection system deficiencies that may result in system overflow and downstream pump station failure. The City has been conducting field investigations of the sewer collection system since the 1980’s in order to



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identify rehabilitation needs. In the late 1980’s and early 1990’s, the City smoke tested the sewer collection system in East Salinas for evidence of infiltration/inflow, since this area had a higher incidence of older pipes and blockage problems.

In 1998, the City conducted video inspection for all 18-inch and larger pipes that had not been recently inspected, and compiled a database of inspection logs and videotapes. The City also hired a consultant to evaluate major concrete pipes and identify those prone to collapse. The resulting field data was used in the 1998 Sanitary Sewer Master Study.

In 1997-98, the City contracted for a comprehensive master plan study of the major components of the sewer collection system. The 1998 Sewer Master Plan Study updated the City’s 1992 Sanitary Sewer Master Plan that had been an update of the 1972 Sewage and Drainage Survey. The 1998 Master Plan included all sanitary sewer trunk lines and sewers 10-inches and greater in diameter and City-owned sewer pump stations that are fed by the master plan pipe system. The master plan investigated deficiencies and identified necessary improvements for the sanitary sewer system. The master plan findings, in conjunction with the field data on the existing system conditions, were used by the City to formulate and prioritize capital improvements projects to correct existing deficiencies and provide for future growth.

The Master Plans included flow monitoring during dry and wet weather periods for calibration of model flows. The City does not currently conduct routine flow monitoring, other than for the master plan updates or special project applications. Flow monitoring of the entire collection system is conducted at the Monterey Regional Water Pollution Control Agency’s Salinas Pump Station. The City began a limited flow monitoring program in late 2005 in response to infiltration inflow concerns and was ongoing in 2006 and has been extended to include the several wet weather months in 2007. As the Sanitary Sewer Plan is implemented, other flow monitoring needs will be identified.

Since 1999, the City has been implementing Phase 1 of the recommended sewer system improvement projects, as shown in the following table.

Phase 1 for Sanitary Sewer Rehabilitation/Replacement of Deteriorated Pipes and Pump Stations City

Project No.

Street Location

Type of Project

Diameter (inches)

Length (feet)

Estimated Cost

Status as ofJanuary

2008 Pipe Projects Completed

9619 Kipling Sewer Trunkline Replacement -

Direct Bury 42 8,300 $4,131,000 Completed

9846 Davis Road Lateral “D” Replacement -

Direct Bury 48 975 $456,000 Completed

9846 Davis Trunk System Replacement -

Direct Bury 54 12,000 $6,019,000 Completed

9847 Blanco Sewer Pipe Liner 24, 30 4,125 $860,000 Completed



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Project No.

Street Location

Type of Project

Diameter (inches)

Length (feet)

Estimated Cost

Status as ofJanuary

2008 Trunk System

9852-A Blanco Sewer

Trunk – E. Blanco Road

Replacement– Direct Bury 33 8,400 $3,327,000 Completed

9852-C W. Alisal Street Sewer Pipe Liner 18, 24 8,400 $1,641,600 Completed

9852-D

W. Blanco-Iverson-Romie

Lane Sewer System

Pipe Liner 18, 21 7,200 $1,339,000 Completed

9852-E S. Sanborn Road Sewer

System Pipe Liner 18, 24, 33 4,200 $1,244,000 Completed

Subtotal Pipe Projects Under Construction 53,600 $19,017,600 Under Construction

9850 W. Rossi Trunk System Replacement–

Direct Bury 42, 48 5,000 Combined with 9852-b

Completed March 06

9852-B Bridge Street Sewer System Replacement-

Direct Bury 36, 48 3,300 $7, 500,000 Completed March 06

Subtotal Pipe Projects Under Construction/Design 8,300 $7,500,000

Under Design

9738 W. Laurel Sewer System Pipe Liner 10, 12 5,600 $549,000 Under Study

9125 Kern Street Sewer System Replacement-

Direct Bury 8 1,600 $646,000 Completed

2006 Subtotal Pipe Projects Pending 7,200 $1,195,000

Total for All Pipe Projects 69,100 $27,712,600 Pump Station Projects

9363, 9891

Pump Station Improvements

Stations at Carpenter

Hall, TP No. 2, Santa Rita

NA NA $1,221,000 Completed

9803 Pump Station Repair Carpenter Hall Pump Station NA NA $310,000 Completed

9117 Pump Station

Backup Generators

Airport, Mill Lake, Las

Casitas Pump Stations

NA NA $525,365 Completion March 2008

Pump Station Flow Meters

Airport, Mill Lake, Las

Casitas Pump Stations

NA NA $28,000 Completion May 2008

Manhole Rehabilitation

Romie to South Main

sewer trunkline

NA NA $161,000 Completed 2007

Total for All Pump Station Projects $2,245,365



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Project No.

Street Location

Type of Project

Diameter (inches)

Length (feet)

Estimated Cost

Status as ofJanuary

2008 GRAND TOTAL FOR ALL PHASE 1 SEWER PROJECTS $30,118,965

Key milestones of the Phase 1 rehabilitation program include:

To date, construction has been completed for Phase 1 replacement/rehabilitation projects for 61,900 LF of sewer pipe at a total cost of approximately $27.7 million, as well as major pump station improvement projects of $1.9 million.

Projects currently under design, include an additional 5,600 LF of pipe at an estimated cost of $549,000.

Design plans were completed in 2007 for improvements to lift stations to include backup power generators at a revised estimate from 2005 of $525,365.

In 2006 the City identified the deteriorated condition of manholes on the E. Romie Lane and South Main Street sewer trunk line and completed 60 percent of rehabilitation to approximately 16 manholes at a cost of $161,000.00. The project reached 100 percent completion in 2007.

In addition to completing the Phase 1 Rehabilitation and Replacement Projects, the City is planning for Phase 2 as part of the development of the Sewer System Management Plan. Completion of Phase I neared completion in 2006. Phase 2 of the sewer replacement and rehabilitation program, may include the following activities:

System-wide pipeline inspection that will address smaller sewers that were not covered in the 1998 work.

Development of a Phase 2 CIP to identify required replacement and rehabilitation projects based on field inspection data, sanitary sewer master plan recommendations, and hot spots identified by City staff.

Prioritization of Phase 2 CIP projects and costs, implementation schedule for design and construction, and necessary funding.

The City has provided funding for sanitary sewer system operation, maintenance and improvement projects, even with its many other funding responsibilities for the health and safety needs of its citizens. In 1994, the City first applied a 15 percent sanitary sewer surcharge as a funding mechanism to assist in upgrading the sanitary sewer system. This was the first sewer surcharge in the City’s history, but was not sufficient to meet sewer system upgrade needs, since revenues from the surcharge were also needed to comply with NPDES storm water quality requirements that began in the same timeframe.



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In response to these funding needs, the City implemented a storm sewer fee to fund the NPDES storm water program requirements in order to free up all sanitary sewer surcharge revenues for sewer system improvements. To provide a higher level of funding to more quickly implement sewer system improvements, the City also increased the sanitary sewer surcharge beginning with the June 1998 MRWPCA billings and issued municipal bonds that were dedicated for this purpose. The Sanitary Sewer Fund revenues are allocated to sewer system inspection, cleaning, spill minimization and cleanup, and repair and replacement projects.

In late 2002, the City was forced to replace the storm sewer fee with gas tax revenues, in response to a legal challenge from the Howard Jarvis Taxpayers Association as not meeting the requirements of Proposition 218. Gas tax revenues will be used for the NPDES Storm Water Program until a viable permanent funding source can be identified. In the meantime, the City is deferring street improvements that would otherwise have been funded from the gas tax. However, the sanitary sewer program has not been impacted.

Due to the ongoing recession exacerbated by the State budget shortfalls and subsequent raiding of County/local funds, the City experienced a severe budget crisis resulting in major overall cutbacks in overall programs and staff in 2005. This budget crisis began in FY 02-03, and continued through 2005 . The significant funding cuts continue to impact all General Fund service support areas; however, no cutbacks are anticipated for the completion of Phase 1 sanitary sewer system programs. The Sanitary Sewer Fund revenues from the current funding sources have been dedicated for these purposes.

Funding for Phase 2 of the sanitary system programs will need to be identified and obtained. It is anticipated that system operation and maintenance would continue to be funded from sanitary sewer surcharge revenues. Depending on the sanitary sewer improvement projects identified for Phase 2 implementation, another bond issue may be needed in addition to an increase in surcharge revenues. The current multi-year flow monitoring for infiltration/inflow is a first step to identify system needs for Phase 2 implementation.

Training (Item F) Long-term senior experienced City staff provide in-house training regarding sewer collection system operations, maintenance and monitoring. Training is accomplished by a combination of initial orientation, monthly “tailgate” training sessions, and on-the-job training.

New sewer maintenance employees receive a first day orientation and safety training. The monthly tailgate training sessions and individual instruction include discussion of the following items at various times:

Sanitary sewer regulatory requirements,


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