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RESOLUTION NO. 2025-026
A RESOLUTION OF THE CITY COUNCIL OF THE
CITY OF CORONA, CALIFORNIA, APPROVING THE
SEWER SYSTEM MANAGEMENT PLAN AND
REPEALING RESOLUTION NO. 2023-022
WHEREAS, the State Water Resources Control Board has adopted Order No. 2006-0003-DWQ, requiring all public wastewater collection system agencies in California that own or operate a collection system comprised of more than one mile of pipe or sewer line, which convey untreated wastewater to a publicly owned treatment facility, to prepare a sewer system management plan; and
WHEREAS, the City of Corona, as the owner and operator of a collection system comprised of more than one mile of pipe or sewer line, is subject to the requirements of Order No. 2006-0003-DWQ; and
WHEREAS, on February 18, 2009, the City Council adopted Resolution No. 2009-018 approving a Sewer System Management Plan for the City of Corona in accordance with the requirements of Order No. 2006-0003-DWQ; and WHEREAS, Order No. 2006-0003-DWQ requires the Sewer System Management Plan be updated every 5 years and it be recertified by the City Council if significant updates are made; and
WHEREAS, on May 3, 2023, the City Council adopted Resolution No. 2023- 022, approving a Sewer System Management Plan for the City of Corona in accordance with the requirements of Order No. 2006-0003-DWQ; and
WHEREAS, the State Water Board adopted the reissued Sanitary Sewer System Waste Discharge Requirements Order No. 2022-003-DWQ on December 6, 2022, making it effective as of June 5, 2023; and
WHEREAS, the Utilities Department staff has reviewed and updated the Sewer System Management Plan. Significant changes to the SSMP include updated spill notification, monitoring, and reporting requirements, Legally Responsible Official designation requirements, and updated deadlines for SSMP Audits (now due every 3 years vs. every 2 years) and SSMP Updates (now due every 6 years vs. every 5 years); and WHEREAS the Utilities Department now presents the Sewer System Management Plan to the City Council for recertification as required by Order No. 2022- 0103-DWQ.
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NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF
THE CITY OF CORONA, CALIFORNIA, AS FOLLOWS:
SECTION 1. Approval of SSMP. The Sewer System Management Plan attached hereto as Exhibit "A" is hereby adopted and certified, and the Utilities Director of the City of Corona Utilities Department is authorized and directed to amend the Sewer System Management Plan as necessary to reflect current regulatory requirements and best practices.
SECTION 2. Repeal of Conflicting Resolution. Resolution No. 2023-022 is hereby repealed.
SECTION 3. Effective Date. This Resolution shall become effective immediately upon its adoption.
PASSED, APPROVED AND ADOPTED this 16th of April, 2025.
ATTEST:
City Clerk of the City of Corona, California
Mayor of the City of Corona, California
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CERTIFICATION
I, Sylvia Edwards, City Clerk of the City of Corona, California, do hereby certify that the foregoing Resolution was regularly passed and adopted by the City Council of the City of Corona, California, at a regular meeting thereof held on the 16th day of April, 2025 by the following vote:
AYES:
NOES:
ABSENT:
ABSTAINED:
IN WITNESS WHEREOF, I have hereunto set my hand and affixed the official seal of the City of Corona, California, this 16th day of April, 2025.
City Clerk of the City of Corona, California
[SEAL]
JAMIER\06200.25001\10307536.1
EXHIBIT "A"
SEWER SYSTEM MANAGEMENT PLAN
s
CITY OF CORONA
UTILITIES DEPARTMENT
SEWER SYSTEM MANAGEMENT PLAN
(SSMP)
WDID 8SSO10565
Updated 04-16-2025
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TABLE OF CONTENTS
1.0 Goals….................................................................................................................... 3
2.0 Organization ..........................................................................................................11
3.0 Legal Authority… ..................................................................................................19
4.0 Operation and Maintenance Program ................................................................ 23
5.0 Design and Performance Provisions. ...................................................................32
6.0 Sanitary Sewer Overflow Emergency Response Plan ........................................ 36
7.0 Fats, Oils, and Grease (FOG) Control Program....................................................46
8.0 System Evaluation and Capacity Assurance Plan ................................................51
9.0 Monitoring, Measurement, and Program Modifications. .....................................56
10.0 SSMP Program Audits. ....................................................................................... 59
11.0 Communication Program ....................................................................................61 SSMP Appendices...................................................................................................... 64 SEWER SYSTEM MANAGEMENT PLAN Page | 3
SECTION 1.0
GOALS & INTRODUCTION
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1.0 GOALS & INTRODUCTION
REGULATORY REQUIREMENTS
COMPLIANCE
1.1 Regulatory Context
This Sewer System Management Plan (Plan) identifies goals the City of Corona Utilities Department has established for the management, operation, and maintenance of the sewer system, and discusses the role of the Plan in supporting these goals. These goals provide a focus for City staff to continue high-quality work and to implement improvements in the management of the City’s sewer system. To ensure a robust Plan, the City regularly conducts an audit of the Plan, assesses its effectiveness, and updates the Plan accordingly.
GOALS DISCUSSION
• Be available and responsive to the needs of the public, and work cooperatively with local, state and federal agencies to reduce, mitigate the impacts of, and properly report sewer system overflows (SSOs).
• Protect public health and safety, and the environment. • Provide adequate capacity to convey peak wastewater flows. • Conduct a regularly scheduled maintenance program that will minimize the risk and occurrence of SSOs.
• Identify areas in the sewer system prone to blockages or SSOs and implement scheduled maintenance to remove roots, debris, fats, oils, and grease. • Identify, prioritize, and continuously renew and replace sewer system facilities to maintain reliability.
• Periodically review and update the Sewer System Management Plan (Plan). • Educate the public on the impacts of fats, oils, and grease to gravity sewer mains to prevent their actions from causing SSOs.
• Uphold the City’s standards and specifications on newly constructed public sewers.
The Plan Introduction section must provide a:
1.1 General description of the sewer system management program and
1.2 Discuss Plan implementation and updates
Goals: The goal of the Sewer System Management Plan (Plan) is to provide a plan and schedule to:
• Properly manage, operate, and maintain all parts of the Enrollee’s sanitary sewer system(s),
• Reduce and prevent spills, and
• contain and mitigate spills that do occur.
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For successful implementation of the Sewer System Management Plan, the Legally Responsible Official (LRO), Assistant Utilities Director, Maintenance Manager, Construction Superintendent, Utility Service Workers, Pre-Treatment Program Contractor, and the Regulatory Compliance Division are responsible for reviewing the Sewer System Management Plan for compliance and determining its effectiveness in preventing sewer spills and are responsible for implementing the Plan as well as updating the Plan regularly.
The City periodically reviews the Plan for compliance, implementation, and effectiveness of all of the following elements as well as Appendices:
1. Goals and Introduction
2. Organization
3. Legal Authority
4. Operation and Maintenance Program
5. Design and Performance Provisions
6. Sanitary Sewer Overflow Emergency Response Plan
7. Fats, Oils, Grease, and Pipe Blocking Substances Program
8. System Evaluation and Capacity Assurance Plan
9. Monitoring, Measurement, and Program Modifications
10. SSMP Program Audits
11. Communication Program
COMPLIANCE SUMMARY
The City of Corona’s Sewer System Management Plan is internally reviewed annually, including the Emergency Response Plan and the Training Program. All updates are logged in the Plan Change Log found in Appendix S. All Plan audits are completed within six months following the three-year audit period and all Plan Updates are completed every six years after the last Plan Update. The City’s governing body certifies significant changes by the due date.
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1.2 SSMP UPDATE SCHEDULE
REGULATORY REQUIREMENTS
COMPLIANCE
To comply with this requirement, the City has conducted Audits and Updates according to the schedule below:
The Utilities Department reviews and updates the Sewer Management Plan regularly. Internal audits of the Sewer System Management Plan are conducted utilizing the established Audit Form (Appendix R) at a minimum frequency of once every three years, after the end of the last required audit period. The Audit is completed within three months following the end of the three-year audit period. The Audit Report is submitted into the California Integrated Water Quality System (CIWQS) Online Database by the Legally Responsible Official (LRO) within six months following the end of the three-year audit period.
Any deficiencies discovered following the internal audit is addressed within six months in order to address the prevention of sewer spills immediately and effectively.
Following internal audits, the Sewer System Management Plan is updated at a minimum frequency of every six years after the last Plan Update due date.
Significant milestones of spill prevention activities are reviewed, monitored, and updated as needed:
• Date CCTV inspection cycle will be completed every 4 years The Plan Introduction section must include a schedule for the Enrollee to update the Plan, including the schedule for conducting internal audits. The schedule must include milestones for incorporation of activities addressing prevention of sewer spills.
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• High maintenance locations cleaned monthly or quarterly • Sewer Master Plan Update
A summary of revisions based on internal audit findings and other sewer system managementrelated changes are included in the Plan Update. Changes to the Plan are also documented in the Plan Change Log (Appendix S).
Corona’s governing entity, City Council, approves and certifies the updated Plan, which is then uploaded into CIWQS by the Legally Responsible Official.
Corona’s internal timeline for meeting compliance is summarized below:
Action Item Deadline
Review Plan Annually
Conduct Audit May 3 - October 31, 2024, then every 3 years Upload Audit Report into CIWQS November 2, 2024, then every 3 years Address Deficiencies As outlined in the Audit Report
Update Plan As deficiencies are corrected
Certify Plan April 2025 and every 6 years; following significant changes Upload Updated Plan into CIWQS May 2, 2025, then every 6 years; following significant changes
COMPLIANCE SUMMARY
The City adheres to the milestones described in this section by conducting audits, monitoring spill prevention activities, addressing deficiencies, and updating the Plan as scheduled.
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1.3 SEWER SYSTEM ASSET OVERVIEW
REGULATORY REQUIREMENTS
COMPLIANCE
The City of Corona is located in the northwestern portion of Riverside County, California. The City has a population of approximately 169,868 residents and encompasses 39.2 square miles of residential, commercial, and industrial land. Neighboring cities include Riverside to the northeast and Norco to the north. The western and eastern portions of the City are generally bounded by unincorporated Riverside County (County) territory, and the southern portion of the City is bounded by the Cleveland National Forest and County territory. Prado Flood Control Basin is located adjacent the City’s northwest corner.
The Plan Introduction section must provide a description of the Enrollee-owned assets and service area, including but not limited to:
• Location, including county(ies);
• Service area boundary;
• Population and community served;
• System size, including total length in miles, length of gravity mainlines, length of pressurized (force) mains, and number of pump stations and siphons; • Structures diverting stormwater to the sewer system;
• Data management systems;
• Sewer system ownership and operation responsibilities between Enrollee and private entities for upper and lower sewer laterals;
• Estimated number or percent of residential, commercial, and industrial service connections; and
• Unique service boundary conditions and challenge(s).
• Additionally, the Plan Introduction section must provide reference to the Enrollee’s upto-date map of its sanitary sewer system, as required in section 4.1 (Updated Map of Sanitary Sewer System)
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City of Corona Sewer System Boundary Map
Corona’s sewer collection system is comprised of 457 total sewer lines and 15 active lift stations.
There are 435 miles of gravity sewer lines, 22 miles of force mains, and 120 miles of private sewer lines within City limits.
The latest Supervisory Control and Data Acquisition (SCADA) technology is employed throughout the City of Corona’s various facilities. There are 15 active sewage pump stations throughout the City. SCADA enables continuous monitoring of the flows, levels, pressure, and overall condition of the sewage pumping stations from the City’s operations center and all three Water Reclamation Facilities. Additionally, there are set points within the SCADA system that will create an alarm that can be received by water reclamation operators and utility service workers for the purpose of immediate response to the site.
The City of Corona’s sanitary sewer flow consists of 39,238 residential, 1,471 commercial, 643 industrial and 38 permitted sewer connections that are regulated through the pretreatment program as required by City Municipal Code chapter 13.08. The City has an active fats, oil, and grease (FOG) control program described in section 7.0 of this SSMP.
There are approximately 40,646 upper and lower laterals that are connected to the City’s system, however, City does not own nor operate these laterals within its service area. All private connections must be maintained by the property owner as described in Chapter 13.12 Sewer Connections of the Municipal Code.
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All sewer lines, assets, and maps are tracked via GIS. Section 4.1, Operation and Maintenance, of the Sanitary Sewer Management Plan further describes staff responsibilities in updating and maintaining all City mapping; and how all sewer system electronic mapping files are available to State and Regional Board staff.
COMPLIANCE SUMMARY
The City maintains records on sewer system assets and its service area through established data management systems and standard operating procedures. GIS is utilized for tracking sewer lines, assets, and maps. This data is reviewed annually by the Maintenance Manager, Maintenance Superintendent, as well as the Regulatory Compliance division.
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SECTION 2.0
ORGANIZATION
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2.0 ORGANIZATION
The intent of this section of the SSMP is to identify staff responsible for the implementation of this SSMP, responding to SSO events, and meeting the SSO reporting requirements. This section also includes the designation of the authorized representative responsible for certifying reports in the California Integrated Water Quality System (CIWQS) Online Database.
REGULATORY REQUIREMENTS
COMPLIANCE
ORGANIZATION DISCUSSION
The following sections outline the City’s organization, general and SSMP responsibilities of personnel, authorized representatives, organizational lines of authority, and chain of communication for responding to and reporting SSOs. Names and contact information for current staff are included in Appendix A.
LEGALLY RESPONSIBLE OFFICIAL
The Legally Responsible Official (LRO) has the authority to ensure the enrolled sanitary sewer system(s) complies with the General Order and is authorized to serve as a duly authorized representative. The Legally Responsible Official has responsibility over management of the Enrollee’s entire sanitary sewer system and is authorized to make managerial decisions that govern the operation of the sanitary sewer system, including making major capital improvement recommendations to ensure long-term environmental compliance. The Legally Responsible Official also has direct authority over individuals that:
• Possess a recognized degree or certificate related to operations and maintenance of sanitary sewer systems, and/or
D.2 Organization: The Plan must identify organizational staffing responsible and integral for implementing the local Sewer System Management Plan through an organization chart or similar narrative documentation that includes:
• The name of the Legally Responsible Official;
• The position titles, telephone numbers, and email addresses for management, administrative, and maintenance positions responsible for implementing specific Sewer System Management Plan elements;
• Organizational lines of authority; and
• Chain of communication for reporting spills from receipt of complaint or other information, including the person responsible for reporting spills to the State and Regional Water Boards and other agencies, as applicable.
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• Have professional training and experience related to the management of sanitary sewer systems, demonstrated through extensive knowledge, training and experience.
DESCRIPTION OF GENERAL AND SSMP RESPONSIBILITIES
Utilities Director
The Utilities Director provides direction, plans, directs, and integrates the operations of the electric water and wastewater utilities of the City; directs and controls departmental budgets, staffing, and policies; directs intergovernmental relations and participates as member of the City's executive team; and performs related duties as assigned. Is also designated as the Legally Responsible Official (LRO) and can certify reports in CIWQS if needed.
Assistant Utilities Director
The Assistant Utilities Director provides administrative direction, plans, manages, and coordinates all related Water, Wastewater and Electric activities. The Assistant Utilities Director takes on a larger responsibility for all division operations, budgets and staffing, and has a greater level of interaction and communication with staff, other departments, committees, agencies, the development community, and public officials. Is also designated as the Legally Responsible Official (LRO) and can certify reports in CIWQS if needed.
The Legally Responsible Official has direct authority over individuals that:
• Possess a recognized degree or certificate related to operations and maintenance of sanitary sewer systems, and/or
• Have professional training and experience related to the management of sanitary sewer systems, demonstrated through extensive knowledge, training and experience.
Maintenance Manager
The Maintenance Manager position is currently vacant, however, the Maintenance Manager manages and oversees the City's infrastructure and maintenance activities; manages all maintenance and construction capital improvement projects for sewer collection and facility maintenance systems. Controls, implements and manages budgetary and administrative duties of this operation. Oversees the construction superintendent, maintenance supervisor, utility service workers, and CCTV contractors.
Senior Engineer
The Senior Engineer approves, and coordinates changes needed to the GIS database. Provides QA/QC for changes needed to utility pipeline maps and records changes. Supplies annual quantification updates for the sewer system inventory.
GIS Analyst
The GIS Analyst updates, manages, and maintains the GIS database. Coordinates with other City departments.
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Utility Maintenance Superintendent
The Underground Maintenance Division is managed by the Utility Maintenance Superintendent.
The Utility Maintenance Superintendent provides , plans, schedules, lays out, supervises and participates in the work of skilled, journey-level personnel engaged in the construction, maintenance, repair and servicing of the water distribution/sewer system and recycled water mains, service lines, valves, water meters and related appurtenances; plans, schedules, lays out the work of construction pipeline and special projects; oversees and manages work of outside contractors involved in the fire hydrant, air vac, blow-offs, and sewer inspection, cleaning and videoing services; leads emergency response, investigates and reports SSOs, trains field crews, notifies Regulatory Compliance Division or regulatory agencies of SSO events when applicable and after normal business hours, and performs other related duties as assigned.
Utility Maintenance Superintendent
The Aboveground Maintenance division is managed by the Utility Maintenance Superintendent.
The Utility Maintenance Superintendent provides, schedules and oversees maintenance of the City’s lift stations, water reclamation collection system, water distribution, reclaimed water infrastructure, generators, and related equipment; oversees field staff and performs related duties as assigned.
Regulatory Compliance Specialists
The Regulatory Compliance Specialist reviews data and creates reports to display the information; updates plans and procedures to meet new regulations including the SSMP and related documents; compiles and submits SSO reports in CIWQS and verifies that information populated is correct; reviews the SSMP and conducts internal audits; notifies regulatory agencies when applicable during normal business hours, reviews applicable permits, laws, and regulations; provides regulatory support to all parts of the Department; prepares letters for notification to agencies regarding changes occurring at facilities; performs related duties as assigned.
Utility Service Workers
The City’s Utility Service Workers performs a wide variety of skilled journey level duties involved in the installation, servicing, repair, and maintenance of the City’s domestic, commercial, and industrial water distribution and sewer system facilities, systems, and equipment; responds to reports of SSOs and blockages, assists in clean up, spill containment and mitigation during SSO events, mobilizes sewer cleaning equipment, by-pass pumping equipment, and portable generators, provides information on SSOs to the Regulatory Compliance Division when appropriate, and performs related duties as assigned.
Closed-Circuit Television (CCTV) Contractor
The CCTV contractor inspects, cleans, and videos the sewer system at the enrollee’s direction.
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Pre-Treatment (Source Control) Program Contractor
Regulates industrial users for the City, reviews industrial permit applications; conducts wastewater sampling, industry inspections, and issues industrial permits; compiles monthly, quarterly, and annual status reports; regulates and inspects interceptors at restaurants, auto repair shops and car washes; issues verbal warnings and written violations to bring industries into compliance; conducts public education on proper disposal of FOG and BMPs for restaurants, monitoring the addition/removal of interceptors, clarifiers, and traps; Uses the Aquatic Informatics database to store data and manage industrial users and the FOG program; provides assistance with building plan checks, the storm water program, odor complaints, and SSO response/follow up as needed.
Maintenance Technicians
Maintenance Technicians performs a wide variety of duties involved in the installation, modification, design, maintenance, and repair of mechanical equipment and machinery used in the operation of large surface water treatment facilities, water reclamation facilities, reverse osmosis desalination facilities, sewer lift stations, and reclaimed water pump stations, and potable booster stations; operation/maintenance, including: production, storage and distribution facilities, and chemical system; and performs related duties as assigned.
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ORGANIZATION CHART
The City of Corona Utilities Department is governed by the City Council. Daily management is carried out by the Director of Utilities, who oversees the Department.
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CHAIN OF COMMUNICATION
The City of Corona Utilities Department chain of communication for reporting spills are as follows:
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COMPLIANCE SUMMARY
The City has a robust sanitary sewer program comprised of well-qualified staff. Any changes in staffing, responsibilities, and contact information are reflected in the Sanitary Sewer Management Plan’s organizational lines of authority and chain of communication to ensure rapid spill response. All spill notifications are routed appropriately to responsible personnel in accordance with the adopted SOP, dated 2018, and the Sewer Emergency Response Plan that is updated on an as-needed basis. All spill response activities are documented and reported to the Legally Responsible Official, Regulatory Compliance Division, and to regulatory agencies as required by the Order.
The City ensures a resilient program by training multiple personnel in specific duties including but not limited to: maintenance, spill response, and reporting.
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SECTION 3.0
LEGAL AUTHORITY
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3.0 LEGAL AUTHORITY
The intent of this section of the Sewer System Management Plan is to establish that the City of Corona Utilities Department has the legal authority to protect public health and the environment while maintaining compliance with waste discharge requirements for sanitary sewer systems.
REGULATORY REQUIREMENTS
COMPLIANCE
LEGAL AUTHORITY DISCUSSION
The City of Corona Utilities Department has the necessary authority to protect its sewer system through Chapter 13.08 and 13.12 of the Corona Municipal Code and Resolution No. 2012-019. The City also runs an EPA approved pretreatment program that administers discharge permits to industrial users who discharge wastewater into the City’s water reclamation collection system.
PREVENTION OF ILLICIT DISCHARGES
The public sewerage ordinance gives the City the authority to prevent illicit discharges per City Municipal Code Section 13.08.210.§ 13.08.210 describes all prohibited waste discharges into the City’s sewer system, or any opening, sump, tank, clarifier, piping, or waste treatment system that will drain or flow to the City’s sewer system.
D.3. Legal Authority: The Plan must include copies or an electronic link to the Enrollee’s current sewer system use ordinances, service agreements and/or other legally binding procedures to demonstrate the Enrollee possesses the necessary legal authority to:
• Prevent illicit discharges into its sanitary sewer system from inflow and infiltration (I&I); unauthorized stormwater; chemical dumping; unauthorized debris; roots; fats, oils, and grease; and trash, including rags and other debris that may cause blockages; • Collaborate with storm sewer agencies to coordinate emergency spill responses, ensure access to storm sewer systems during spill events, and prevent unintentional cross connections of sanitary sewer infrastructure to storm sewer infrastructure; • Require that sewer system components and connections be properly designed and constructed;
• Ensure access for maintenance, inspection, and/or repairs for portions of the service lateral owned and/or operated by the Enrollee;
• Enforce any violation of its sewer ordinances, service agreements, or other legally binding procedures; and
• Obtain easement accessibility agreements for locations requiring sewer system operations and maintenance, as applicable.
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§ 13.08.220 gives the City the necessary authority to also prevent discharges and unauthorized debris from entering the City’s sewer system and storm drain system.
The public sewerage ordinance gives the City the authority to prevent the discharge of FOG and other debris. The Ordinance (in § 13.08.110 and § 13.08.150) gives the City the authority to require applicable businesses to have oil and grease interceptors. Additionally, the Ordinance (in §
13.08.330) requires industries to submit industrial waste discharge permit applications for review to identify if a permit is needed to protect the sewer system.
COLLABORATE WITH STORM SEWER AGENCIES
Riverside County Flood Control and co-permittees of the Municipal Separate Storm Sewer System (MS4) permit, R8-2010-0033, have developed and submitted to the Regional Water Quality Control Board a Unified Sanitary Sewer Spill Response Procedure to ensure effective coordination between sewer agencies and permittees in an event a sanitary sewer overflow impacts, or threatens to impact, the MS4.
SEWER DESIGN AND CONSTRUCTION
The City’s public sewerage ordinance, as well as Chapter 13.12 Sewer Connections of the Municipal Code, gives the City authority to regulate the proper design and construction of sewers and connections.
§ 13.08.170 describes the City’s authority to establish design requirements for standard interceptor designs and installation.
§ 13.12.070 requires anyone who wishes to connect to the City’s collection system to obtain a permit and receive approval from the City before construction. § 13.12.180 describes the requirement to comply with sewer construction standards developed by the City.
The City of Corona Utilities Department also has an updated standard plans and specifications and Design Policy. The purpose of the specifications is to achieve uniformity and consistency in materials, equipment and methods of construction for projects in the City. Additional information can be found in Section 5.0, Design and Performance Provisions, in this Sanitary Sewer Management Plan.
MAINTENANCE AND INSPECTION
The City’s public sewerage ordinance as well as Chapter 13.12 Sewer Connections of the Municipal Code, ensures the City will have access for maintenance, inspection and repair of publicly owned portions of the City’s lateral.
§ 13.12.190 states that any part of the sewer system constructed in a public street, alley, way or right-of-way, will be owned by the City.
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ENFORCEMENT
The City has the authority to enforce all violations of its ordinance with specific wording in the ordinance as well as by Resolution No. 2012-019, Pretreatment Program Enforcement Response Plan (ERP), included in Appendix C. The ERP describes the City’s approved pretreatment program of investigation and response to incidents where industrial users violate regulation relating to the discharge of waste into the City’s sewer system.
Additionally, the ordinance (in § 13.08.410 and § 13.12.210) gives the City enforcement mechanisms and authority.
EASEMENT ACCESSIBILITY AGREEMENTS
The City reserves and maintains access to the sewer collection system if it is on private property through easement recorded on parcel maps and tract maps before a development is accepted by the City Council. For any new sewer collection installation, City obtains approval from other government agencies.
For spills that impact or threaten to impact the Municipal Separate Storm Sewer System (MS4), the responsible sewer agency is to lead response to sewer overflows and will assume Person-InCharge responsibilities, and may cut locks, open manholes, or otherwise enter MS4 as necessary to contain and clean up SSOs according to the Unified Sanitary Sewer Spill Response Procedures.
COMPLIANCE SUMMARY
The City legal authority is derived from the City’s municipal code Chapter 13.08, Public Sewerage System Waste Regulations. The City’s Ordinances are codified as needed to comply with changing regulations on as needed basis. The City also complies with its commitment as stated in the SSMP requirements; and actively addresses deficiencies.
The City also has a robust inspection program that inspects and evaluates the system routinely.
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SECTION 4.0
OPERATION &
MAINTENANCE PROGRAM
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4.0 OPERATION AND MAINTENANCE PROGRAM
The Maintenance Manager leads the Sewer Operations and Maintenance Program and is directly responsible for all day-to-day operations of the sewer system section and oversight control of sewage lift stations, as related to Sanitary Sewer Overflows (SSOs). Responsibilities include construction, installation, pipeline repair projects, inspection, maintenance and support programs, sewer stoppages, and preventive and predictive maintenance. The Construction Superintendent is responsible for supervising and coordinating all work assigned to the utility service workers.
REGULATORY REQUIREMENTS
D.4. Operation and Maintenance Program. The Plan must include the items listed below that are appropriate and applicable to the Enrollee’s system.
4.1. Updated Map of Sanitary Sewer System - An up-to-date map(s) of the sanitary sewer system, and procedures for maintaining and providing State and Regional Water Board staff access to the map(s). The map(s) must show gravity line segments and manholes, pumping facilities, pressure pipes and valves, and applicable stormwater conveyance facilities within the sewer system service area boundaries.
4.2. Preventive Operation and Maintenance Activities - A scheduling system and a data collection system for preventive operation and maintenance activities conducted by staff and contractors that must include:
• Inspection and maintenance activities;
• Higher-frequency inspections and maintenance of known problem areas, including areas with tree root problems;
• Regular visual and closed-circuit television (CCTV) inspections of manholes and sewer pipes.
The data collection system must document data from system inspection and maintenance activities, including system areas/components prone to root-intrusion potentially resulting in system backup and/or failure.
4.3 Training - In-house and external training provided on a regular basis for sanitary sewer system operations and maintenance staff and contractors. The training must cover:
• The requirements of this General Order;
• The Enrollee’s Spill Emergency Response Plan procedures and practice drills; • Skilled estimation of spill volume for field operators; and • Electronic CIWQS reporting procedures for staff submitting data.
4.4 Equipment Inventory
An inventory of sewer system equipment, including the identification of critical replacement and spare parts.
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4.1 SEWER SYSTEM MAPPING
COMPLIANCE
The City of Corona Utilities Department has maps of the existing sewer system. These maps are continually updated and available in the City’s Sewer Atlases, which are hard copies of the sewer system map. These maps show all gravity line segments, manholes and their associated identification number, pumping facilities, and pressure pipes and valves, as well as applicable stormwater conveyance facilities within the sewer system service area boundaries. The hard copies of the atlas are derived from a digital atlas that can be accessed through the City’s employee website, atwork.coronaca.gov - Geographic Information Services (GIS). All utility service worker crews have their own Sewer Atlas and access to GIS sewer maps on the City’s intranet to locate and find specific information about the sewer system. The digital GIS system can generate a Sewer Features Report that includes information such as status of facility, installation date, length, diameter, upstream and downstream invert, slope of line, material type, manhole depth and lid size among other things.
The City has a Senior Engineer who coordinates mapping and GIS changes in the City’s water and sewer system. Any sewer system addition, replacement, or errors found by City staff in the Sewer Atlas is given to this designated person for correction and proper dissemination with the creation or revision date marked on each page. Additionally, all storm water facilities are mapped in the same fashion as the sewer facilities. In the event of an SSO, the Utility Maintenance Superintendent and crews can locate storm drains quickly for sand bagging purposes or can locate where a storm drain is flowing/discharging to (i.e. channel, wetlands, creek, etc.).
All maps pertaining to the sewer system are always available to the State and Regional Water Board. Any major changes to the sewer system maps must be logged in the Plan Change Log (Appendix S).
COMPLIANCE SUMMARY
The GIS department updates and maintains all City mapping. When sewer mapping discrepancies are identified by field staff, staff submit a request, and updates are made by the responsible department. All sewer system electronic mapping files are available to the State and the Regional Water Quality Control Board staff upon request.
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4.2 PREVENTATIVE OPERATION AND MAINTENANCE
COMPLIANCE
SSOs may occur for a number of reasons. Utility service workers are responsible for responding to SSOs during regular work hours (Monday through Thursday). After-hour requests for service are received by 911 dispatch and are then routed to the on-call first responder. This person responds to and assesses the situation, and if further action is required, the second responder (staff classified as a Supervisor) is called. For further details please see Section 2.0 and Section
6.0 of the SSMP.
Once the cause of an SSO has been determined, the Maintenance Manager and/or Utility Maintenance Superintendent will determine if the pipeline and/or facility need to be placed on a schedule for increased cleaning and inspection and/or if repairs are needed. All SSOs are tracked on a centralized spreadsheet and are reported in CIWQS by the Regulatory Compliance Division. Additionally, SSOs are mapped for internal reference and reporting.
Currently all sewer system cleaning and closed-circuit television (CCTV) inspections are contracted out. The contractor(s) utilize state of the art equipment, including CCTV and GIS systems to analyze the entire City sewer and sewage pump station service area. The contractor(s) are hired annually, with the option to renew for up to five years, to video and clean the City’s sewer system. The City plans to have the entire sewer and transmission system videoed and cleaned at a minimum of every four years. The City also contracts a company to perform smoke testing of the sewer mainline to find leaks and illegal hook ups in the sewer system on an as needed basis.
Twenty-two high maintenance areas around the City have been identified and been placed on a monthly or quarterly cleaning schedule. Each manhole cover have a green S painted on top to denote that they have been cleaned. High maintenance areas are also mapped for internal reference and reporting purposes. The City currently works with an engineering firm to evaluate these high maintenance areas for possible capital improvement projects to eliminate these high maintenance areas.
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Monthly High Maintenance Area Cleaning
1. 1111 W. Sixth Street (Wells Fargo Bank)
Manhole 3337, 3338, 3277
2. 600 Block Vicentia (East/West Alley)
Manhole 4005 to 3970 – 450 ft. W. 4000-3970 - 239 ft. E.
3. 220 Kendall (in alley)
Manhole 4118 to 4098 – 461 ft. W.
4. Rincon East of Main Street (Old Marie Callender’s)
Manhole 4434 to 4433, Reverse clean 4434-4435
5. Main Street at River Road (southbound left turn lane) Manhole 4442-8282 – Double Barrell Siphon – 104 ft. x 2
6. 230 W. River Road (at wash)
Manhole 4398 to 4441 – 344 ft. E.
7. 230 W. River Road (alongside wash)
Manhole 4397 to 4398 – 107 ft. E.
8. River Road at Kalus (intersection)
Manhole 3789 to 3796 – 387 ft. N.
9. Third Street between Main and Washburn
Manhole 4539 - 4535 – 50 ft. S.
10. Taylor at Crestview (intersection)
Manhole 4174 to 4160 – 288 ft. W.
11. Mount Humphries East of McKinley
Manhole 7288, 7287, 7286, 7271 South.
12. Corporate Yard Lines
Manhole 11019-11021, 10475-10478, 3864-3862
13. Grand Blvd. Manhole 4578-4579 185ft.
14. Joy & Parkridge (Intersection) Manhole 4456-4454-4453/ 4452-4451-4453-4424 Require T.C.
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15. E 3rd St. to Quarry (alley behind)
Manhole 5069 – 5046/ 9296 – 5071
16. Alley between Joy St. and E. Grand Blvd
Manhole 4621-4620
Quarterly High Maintenance Area Cleaning
17. 1012 Serene Drive
Manhole 3782 to 3770 – 209 ft.
18. Green River Rd.
Manhole 1080-1079-1070-1077-1060-1061-1062
19. 1217 E. Grand Blvd. (in alley) Manhole
4605 and 4607
20. Dos Lagos Shopping Center
Manhole 10514-10725, 11044-10719, 11042-10520
21. Corona Ave at the 15 Freeway Overpass
Manhole 10737
22. Lincoln at Willow Creek
Manhole 5710-11118-11119-3788
If an SSO occurs, the City has the contractor(s) video and clean approximately 1,000 feet around the affected area and depending on the cause or severity of the SSO, may place the area on a monthly or quarterly cleaning schedule. The City also contracts with a root control company to treat areas identified by CCTV. The contractor foams about 15,000 to 17,000 linear feet of sewer main per year. Additionally, the City contracts with a company to perform insect control by spraying the manholes. The insect control is completed for the entire system at a minimum of every three years.
The latest in Supervisory Control and Data Acquisition (SCADA) technology is employed throughout the City of Corona’s various facilities. There are 15 active sewage pump stations throughout the City. SCADA enables continuous monitoring of the flows, levels, pressure, and overall condition of the sewage pumping stations from the City’s operations center and all three Water Reclamation Facilities. Additionally, there are set points within the SCADA system that will create an alarm that can be received by water reclamation operators and utility service workers for the purpose of immediate response to the site.
Per the City’s Sewer Master Plan dated September 2005, there are several guidelines, as a SEWER SYSTEM MANAGEMENT PLAN Page | 29
minimum, for routine and preventative maintenance activities for the sewage pump stations and sewer system that are outlined in Table 1 and 2 below and that have been implemented as described in the paragraphs above.
Table 1
ROUTINE MAINTENANCE
Sewage Pump Station – Weekly:
• Visit pump stations.
• Inspect control panel and verify pump operation.
• Check for signs of vandalism.
• Amp reads on the motors.
• Log all meter readings.
• Inspect wet well and dry well for abnormal conditions. • Note findings.
Sewer System:
• Continue to video and inspect all sewers within 5 years.
Table 1. From City of Corona Sewer Master Plan, AKM Consulting Engineers, September 2005, p. 5-20.
Table 2
PREVENTATIVE MAINTENANCE
Sewage Pump Station - Weekly:
• Test alarms, transducer (LVL), sump pump, and flood alarm. • Replace and clean filters and filter bowl assembly that supplies water to mechanical seal.
• Check meter for heat and pump for vibration.
Sewage Pump Station:
• De-rag the check valves and pump volute-impeller as needed. • Pull pumps bi-annually. Inspect impellers and bowls for wear. Change seals or packing as required.
• Exercise valves monthly.
• Check and exercise back-up generator monthly
• Exercise mechanical equipment which normally does not operate weekly. • Clean wet wells every six months, more frequently in areas with grease, sand or where solids accumulate quickly.
• Check electrical connections annually.
• IR scanning annually.
Sewer System:
• Clean sewers with root intrusion as necessary.
• Clean sewers with grease deposit every 60 - 90 days (this may include siphons and identified “Frequent Maintenance Requiring Facilities”)1. • Clean sewers with debris deposits (for low velocity reaches of pipe) every six months.
Table 2. From City of Corona Sewer Master Plan, AKM Consulting Engineers, September 2005, p. 5-20 – 5-21. 1 “Frequent Maintenance Requiring Facilities” are areas of the system that require frequent maintenance and cleaning as reported by City staff and identified in Table 5-7 of the City of Corona Sewer Master Plan, September 2005.
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Data Management
Recordkeeping of regular/routine maintenance and preventative maintenance is crucial for maintaining the reliability of the City’s sewer system and facilities. The City utilizes an electronic tracking system, NexGen, for all work orders. Additionally, the City utilizes an electronic Maintenance Management System (MMS) that allows the City to view historical information and has reminders of preventative maintenance work. The City is continuously upgrading to allow these systems to track the work more efficiently.
COMPLIANCE SUMMARY
The City utilizes electronic tracking systems for scheduling and completing routine and preventative maintenance on its sewer system as outlined in Table 1 and Table 2 above, at a minimum. Locations that are identified as high maintenance areas also adhere to a strict monthly or quarterly cleaning schedule.
4.3 TRAINING
COMPLIANCE
The City is committed to ensuring its field staff has the proper technical skills and safety training programs available to them. Besides specialty conferences offered through various organizations like the California Water Environment Association (CWEA), the City has several inhouse training courses and programs available for its Utility Service Workers. Depending on job description and duties, the City holds several mandatory training programs for City field staff like confined space entry, electrical safety, fall protection equipment, forklift, gas detector, ladder safety, respiratory protection and roadway flagger training, that are tracked through the City’s Human Resources Department, Safety Division. Additionally, all crews participate in bi-weekly safety meetings with their supervisors as well as whenever new equipment is issued. These safety meetings require staff to sign in and the sign-in sheets are kept to document the safety topic and meetings that individual staff have participated in. The City has also created and provided an online training module entitled, SSO Response and Reporting, for all Utility Service Workers and stand-by staff who may respond to an SSO. This training covers the Spill Emergency Response Plan, General Order requirements, estimating spill volume, and reporting. The SSO Reporting Form training module further details information needed to complete reporting required by the General Order. This ensures the most accurate reporting of sewer overflows. The training also covers CIWQS reporting for data submitters and LROs. All trainings are required annually; however, the City will continually evaluate the need for additional training. The City supports its staff in receiving the necessary training and testing to receive specialized certifications for collection systems.
While the City does not have specified formal training for contractors, City staff does make them aware of the hazards within the system before the start of a job or contract so that contracted staff can be properly trained. The City specifies in its contracts that contractors must be properly trained and that they will be held liable for the consequences of their actions.
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COMPLIANCE SUMMARY
The City regularly reviews training materials and provides annual trainings for staff in collection system operations and maintenance, and requires that contractors are aware of the hazards within the sewer system in advance. The Maintenance Division is responsible for ensuring staff are trained in the operation and maintenance of the sewer system. The Regulatory Compliance Division is responsible for ensuring SSMP staff are trained in the requirements of the Order and SSO reporting. The Safety Division is responsible for maintaining the City’s training records.
4.4 CONTINGENCY EQUIPMENT AND REPLACEMENT INVENTORIES
COMPLIANCE
The City has invested in onsite generators for all lift stations to provide emergency back-up power generation. The City also has the capability to utilize by-pass pumping in case of lift station failure or blockage/failure of mains. The City’s Operations Division has two portable bypass pumps with hoses and the Maintenance Division has two Godwin portable bypass pumps and two hose trailers outfitted with hoses, valves, and fittings.
The City is capable of completing multiple pipeline repairs and has spare items available at the warehouse such as: spare motors, seals, and valves. This inventory is tracked and maintained through an asset works management program. Additionally, the City has several local suppliers that can supply materials around the clock.
COMPLIANCE SUMMARY
The City tracks and maintains its inventory through an asset works management program.
Local suppliers also provide the City with immediate access to materials.
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SECTION 5.0
DESIGN & PERFORMANCE
PROVISIONS
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5.0 DESIGN AND PERFORMANCE PROVISIONS
REGULATORY REQUIREMENTS
5.1 UPDATED DESIGN CRITERIA AND CONSTRUCTION STANDARDS AND SPECIFICATIONS
COMPLIANCE
The City of Corona Utilities Department has an updated standard plans and specifications and Design Policy. The purpose of the specifications is to achieve uniformity and consistency in materials, equipment and methods of construction for projects in the City. The information is updated on an as needed basis, but not less than every 5 years.
The Design Policy outlines general information and requirements by contractors for plan submittal and construction cost estimates.
The specifications and design criteria include materials, pipe alignment, easements, manholes, minimum sizes, minimum cover, strength, minimum slope, trenching and backfill, lift station design criteria, and structure standards.
The City has developed a rehabilitation and replacement plan via the City of Corona Sewer Master Plan, September 2005 which is being updating currently. The objective of the Master Plan is essentially, “to evaluate the City’s existing sewer collection system and provide a framework for the construction of new and replacement facilities using new modeling tools and the City’s D.5. Design and Performance Provisions:
The Plan must include the following items as appropriate and applicable to the Enrollee’s system:
5.1 Updated Design Criteria and Construction Standards and Specifications Updated design criteria, and construction standards and specifications, for the construction, installation, repair, and rehabilitation of existing and proposed system infrastructure components, including but not limited to pipelines, pump stations, and other system appurtenances. If existing design criteria and construction standards are deficient to address the necessary component-specific hydraulic capacity as specified in section D.8 (System Evaluation, Capacity Assurance and Capital Improvements) the procedures must include component-specific evaluation of the design criteria.
5.2. Procedures and Standards
Procedures, and standards for the inspection and testing of newly constructed, newly installed, repaired, and rehabilitated system pipelines, pumps, and other equipment and appurtenances.
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most recent 2003 General Plan update.” (p. 2-3). The Master Plan identifies several considerations used in determining the useful life of the City’s gravity sewers, force mains, and sewage pump stations. These considerations are: type of materials used and recorded performance of similar installations, velocities and flow rates expected in the system, chemical and biological conditions of the wastewater, construction methods and installation quality, frequency, thoroughness, and types of maintenance (p. 4-11).
In order to assess the condition and to be able to recommend rehabilitation and replacement of City facilities, a hydraulic model of the City’s sewer system was created with H2OMap Sewer software. The model was based on the City’s GIS data that included information on land use, sewer pipe diameters, lengths and invert elevations. The hydraulic model results were able to identify existing sewers in the City that exceeded the capacity criterion and are discussed in Section 5 and listed in Table 5-4 of the Sewer Master Plan. Additionally, results of the CCTV inspections were used to identify problem areas around the City and generate a CCTV pipeline assessment summary of 120 locations listed in Table 5-5 of Section 5 of the Master Plan. All sewage pump stations were assessed, graded, and given a priority ranking in regard to rehabilitation and replacement. This summary can be found in Table 7-5 of Section 7 of the Master Plan as well. All assessments were made based on the useful life consideration and performance design criteria, visual inspections, and modeling results that are discussed in further detail in Sections 4, 5 and 7 of the Master Plan.
Based upon the assessments in the Master Plan, a list of Capital Improvement Projects (CIP) was identified and generated. Currently, Managers are working from this 2005 list, however, every year it is reviewed and revised based on the changing needs of the City and regulations. The latest CIP list can be found in the City of Corona Capital Improvement Program for the current Fiscal Year.
COMPLIANCE SUMMARY
The City of Corona Utilities Department utilizes standard plans and specifications and a Design Policy to ensure consistency in materials, equipment and methods of construction for projects within the City. The City also assesses the collection system via the City of Corona Sewer Master Plan. Based on the Master Plan, Capital Improvement Projects are identified to rehabilitate and improve the sewer system.
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5.2 PROCEDURES AND STANDARDS
COMPLIANCE
The City of Corona has a full-time staff of qualified inspectors and uses qualified third party inspectors for inspecting new sewers, lift stations, other appurtenances and for rehabilitation and repair projects. The City utilizes the Standard Specifications for Public Works Construction (Greenbook) latest edition, City’s adopted engineering standards, and its design manual or Construction Specifications Institute standard specifications for inspection and testing of new and rehabilitated facilities. The information is updated on an as needed basis, but not less than every 5 years.
COMPLIANCE SUMMARY
The City of Corona adheres to standard specifications for inspecting and testing new and rehabilitated facilities.
The City’s Sewer Master Plan, design policy, and specifications for inspection, ensures vulnerable areas within the collection system are identified, rehabilitated or replaced, and are inspected and tested according to standard specifications. The specifications are updated on an as needed basis, but not less than every 5 years.
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SECTION 6.0
SANITARY SEWER
OVERFLOW EMERGENCY
RESPONSE PLAN
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6.0 SANITARY SEWER OVERFLOW EMERGENCY RESPONSE PLAN
REGULATORY REQUIREMENTS
D.6. Spill Emergency Response Plan: The Plan must include an up-to-date Spill Emergency Response Plan to ensure prompt detection and response to spills to reduce spill volumes and collect information for prevention of future spills. The Spill Emergency Response Plan must include procedures to:
• Notify primary responders, appropriate local officials, and appropriate regulatory agencies of a spill in a timely manner;
• Notify other potentially affected entities (for example, health agencies, water suppliers, etc.) of spills that potentially affect public health or reach waters of the State; • Comply with the notification, monitoring and reporting requirements of this General Order, State law and regulations, and applicable Regional Water Board Orders; • Ensure that appropriate staff and contractors implement the Spill Emergency Response Plan and are appropriately trained;
• Address emergency system operations, traffic control and other necessary response activities;
• Contain a spill and prevent/minimize discharge to waters of the State or any drainage conveyance system;
• Minimize and remediate public health impacts and adverse impacts on beneficial uses of waters of the State;
• Remove sewage from the drainage conveyance system;
• Clean the spill area and drainage conveyance system in a manner that does not inadvertently impact beneficial uses in the receiving waters; • Implement technologies, practices, equipment, and interagency coordination to expedite spill containment and recovery;
• Implement pre-planned coordination and collaboration with storm drain agencies and other utility agencies/departments prior, during, and after a spill event; • Conduct post-spill assessments of spill response activities; • Document and report spill events as required in this General Order; and • Annually, review and assess effectiveness of the Spill Emergency Response Plan, and update the Plan as needed.
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COMPLIANCE
The Sanitary Sewer Overflow Emergency Response Plan is designed to ensure that every report of a confirmed sewage overflow is immediately dispatched to the appropriate crews. This way the effects of the overflow can be minimized with respect to impacts to public health and adverse effects on beneficial uses and water quality of surface waters. The Emergency Response Plan further includes provisions to ensure safety pursuant to the directions provided by the Utilities Department.
Notification and reporting are made to the appropriate local and state authorities. For purposes of this Emergency Response Plan, “confirmed sewage spill” is also sometimes referred to as “sewer overflow,” “overflow,” or “SSO.”
To comply with this requirement, the City addresses each element below:
ORGANIZATION OF PLAN
The key elements of the Emergency Response Plan are addressed individually as follows:
• Notification and Reporting Procedures
• Response Activities
• Emergency Response, Containment, Clean-Up, and Monitoring • Training
• Assessments
NOTIFICATION AND REPORTING PROCEDURES
The City of Corona has developed SSO Notification Procedures to ensure notifications are made in a timely manner to first responders, local officials, regulatory agencies, and other affected agencies.
These procedures provide the appropriate agency name, contact person, and phone number for each type of spill category including private spills. Immediate notification to the Office of Emergency Services (OES) and Regional Water Quality Control Board (RWQCB) is required within two hours for all Category 1 spills. A copy of the SSO Notification Procedure is included in Appendix D.
Using data supplied, starting from the initial notification to complete clean-up, the first or second responder prepares initial and final internal SSO Reports. The designated responder will utilize the SSO Incident Response Form (Appendix E) and the SSO Reporting Form (Appendix F) to record all pertinent information on the spill. Within two working days, these forms are submitted to the Regulatory Compliance Division for reporting in CIWQS.
During regular work hours, the Regulatory Compliance Division is responsible for making notifications to the regulatory agency according to the reporting requirements in the permit. The Regulatory Compliance Division will contact other agencies, if necessary, as well as other interested and possibly impacted parties. After hours, the second responder is responsible for completing the notifications.
The Regulatory Compliance Division is responsible for reporting the spill in CIWQS within the specified timeframes. All information supplied to the Regulatory Compliance Division is reviewed for completeness; any missing data is confirmed, and all forms and photos are saved in an electronic file SEWER SYSTEM MANAGEMENT PLAN Page | 39
for future reference. The documentation provided is then used to complete an SSO report in CIWQS.
Media Notifications
When an overflow has been confirmed and is a threat to public health, the following actions will be taken, if necessary, to notify the media:
1. First responder or response crew verifies overflow and reports back to the Director of Utilities.
2. The City of Corona Utilities Director shall be the "first-line" of response to the media for any overflow.
3. Calls received by the dispatcher from the media at any time are referred to the Utilities Director.
Other Public Notifications
Should surface water bodies or ground surfaces subjected to a sewer overflow be deemed hazardous and there is a need for further public notification, it can be made through the use of pre-scripted notices. These notices are made available through printed or electronic news media for immediate publication or airing, or by other measures (e.g., front door hangers).
Temporary Signage
The City of Corona has primary responsibility for determining when to post notices of polluted surface water bodies or ground surfaces that result from uncontrolled wastewater discharges from its facilities or service area. If posting is deemed necessary, the County Department of Environmental Health shall be notified. During work hours, the Regulatory Compliance Division should make the notification. The City of Corona shall work with the RWQCB and any other local, state, or federal agencies necessary to ensure effects on the public and environment are minimized.
RESPONSE ACTIVITIES
The SSO Response SOPs present a strategy for the City of Corona to mobilize labor, materials, tools, and equipment to correct or repair any condition, which may cause or contribute to an un-permitted discharge. The plan considers a wide range of potential system failures that could create an overflow to surface waters, land, or buildings. SSO Response Standard Operating Procedures (SOPs) are included in the appendices.
Receipt of Information Regarding a Sewer Overflow
An overflow may be detected by system employees or by others. The Utilities Department is primarily responsible for receiving phone calls from the public of possible sewer overflows, and for issuing work orders. Generally, telephone calls from the public reporting possible sewer overflows are received during the day by telephone at the Utilities Department. The after-hours emergency phone line is staffed 24 hours per day by the first responder at (951) 830-2319.
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The telephone operator or first responder obtains all relevant information available regarding the overflow including:
• Time and date call was received;
• Specific location;
• Description of problem;
• Time possible overflow was noticed by the caller;
• Caller’s name and phone number;
• Observations of the caller (e.g., odor, duration, back or front of property); and
• Other relevant information that will enable the responding investigator and crews, to quickly locate, assess, and stop the overflow.
The receiver then records the overflow information in the SSO Incident Response Form.
Lift station failure alarms are monitored and received by Water Reclamation Operators. The operator on-duty immediately conveys all information regarding alarms to the Chief Reclamation Operator to initiate the investigation.
Sewer overflows detected by any personnel in the course of their normal duties are reported immediately to the Utilities Department. Dispatching personnel record all relevant overflow information and dispatch responders to investigate and can send additional first responders as needed.
Dispatch of Appropriate Crews to Site of Sewer Overflow Failure of any element within the sewer system that threatens to cause or causes an SSO triggers an immediate response to isolate and correct the problem. Crews and equipment are available to respond to any SSO location. Crews will be dispatched immediately to any site of a reported SSO.
Also, additional maintenance personnel can be placed “on call” in the event extra crews are needed.
1. Dispatching Crews
• Dispatchers receive notification of sewer overflows as outlined in “Receipt of Information Regarding a Sewer Overflow” and dispatch first responders to investigate and/or the appropriate crews and resources as required. • Dispatchers notify the appropriate manager or supervisor, with the quickest communication tool available, regarding sewer overflows and field crew locations.
2. Crew Instructions and Work Orders
• Utilities Department employees receive instructions from their supervisors regarding appropriate crews, materials, supplies, and equipment needed.
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• Dispatchers verify that the entire message has been received and acknowledged by the crews that were dispatched. All employees being dispatched to the site of a SSO should proceed immediately to the overflow. Report any delays or conflicts in assignments immediately to the supervisor for resolution. • In all cases, response crews report their findings, including possible damage to private and public property, to the Maintenance Manager immediately upon making their investigation. If necessary, the site supervisor refers all pertinent information to the next shift, including any details of the problems described by customers.
3. Additional Resources
• Spill volume is estimated and reported to second responder and Regulatory Compliance Division.
4. Second responder receives and conveys to appropriate parties requests for additional personnel, material, supplies, and equipment from crews working at the site of a sewer overflow.
5. Preliminary Assessment of Damage to Private and Public Property • The focus is to resolve the problem. The response crews use discretion in assisting the property owner/occupant as reasonably as they can. Be aware that the Utilities Department could face increased liability for any further damages inflicted to private property during such assistance. The response crew shall not enter private property for purposes of assessing damage. Take appropriate still photographs and video footage, if possible. This should include the outdoor area of the sewer overflow and impacted area in order to thoroughly document the nature and extent of impacts.
Forward available photographs to the Utilities Department Regulatory Compliance Division for filing with the SSO Report.
6. Field Supervision and Inspection
• The supervisor of the first responder, who confirmed the sewer overflow, visits the site of the overflow, to ensure that provisions of this overflow response plan and other directives are met.
• The supervisor is responsible for confirming that the SSO Report is provided to the Regulatory Compliance Division within two (2) days.
7. Coordination with Hazardous Material Response
• Upon arrival at the scene of a sewer overflow, if a suspicious substance (e.g., oil sheen, foamy residue) is found on the ground surface, or a suspicious odor (e.g., gasoline) not common to the sewer system is detected, the first responder or response crew should immediately contact the supervisor for guidance before taking further action.
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• Should the supervisor determine the need to alert the hazardous material response team, contact the City of Corona Fire Department at dispatch (951) 736-2221. The first responder or crew awaits the arrival of the appropriate response team to take over the scene. Remember that any vehicle engine, portable pump, or open flame (e.g., cigarette lighter) can provide the ignition for an explosion or fire if flammable fluids or vapors are present. Keep a safe distance and observe caution until assistance arrives.
• Upon arrival of the response team, the first responder or crew takes direction from the lead authority of that team. Only when that authority determines it is safe and appropriate for the first responder and crew to proceed, they can proceed under the SSOERP with the containment, clean-up activities, and correction.
EMERGENCY RESPONSE, CONTAINMENT, CLEAN-UP, MONITORING, AND ASSESSMENTS Sanitary Sewer Overflows (SSOs) of various volumes occur from time to time in spite of concerted prevention efforts. Spills may result from blocked sewers, pipe failures, or mechanical malfunctions among other natural or man-made causes. The City of Corona is on alert and prepared to respond upon notification of an overflow. The objectives of these actions are:
• To protect public health, environment, and property from sewage overflows and restore surrounding area back to normal as soon as possible; • To establish perimeters and control zones with appropriate traffic cones and barricades, vehicles, or use of natural topography (e.g., hills, berms). • To promptly notify the Regulatory Compliance Division during work hours, or if after hours, the regulatory agencies of the preliminary overflow information and potential impacts;
• To contain the sewer overflow to the maximum extent possible including preventing the discharge of sewage into surface waters and drainage conveyance systems; and • To minimize the City of Corona's exposure to any regulatory agency penalties and fines. Under most circumstances, the City of Corona handles a majority of response actions with its own maintenance division. They have the skills and experience to respond rapidly and in the most appropriate manner. An important issue with respect to an emergency response is to ensure that the temporary actions necessary to divert flows and repair the problem do not produce additional problems elsewhere in the system. For example, repair of a force main could require the temporary shutdown of a pump station and diversion of the flow at an upstream location. If the closure is not handled properly, sewage system backups may create other overflows.
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The City contracts a company to clean and CCTV the sewer system throughout the year and to aid the City during SSO events. The City owns its own combination, jetting and vacuum, truck to mitigate SSOs immediately, however, if additional vactor trucks are needed, this contractor can be called to assist with an SSO and is usually already within City limits, which provides quick response, containment, and clean-up. The City also maintains contracts with restoration companies for emergency services. The Four C’s - containment, control, call, and clean-up - are used during any SSO event and included in Appendix K.
Circumstances may arise when the City of Corona could benefit from the support of private-sector construction assistance. This may be true in the case of large diameter pipes buried to depths requiring sheet piling and dewatering should excavation be required. The City of Corona may also choose to use private contractors for open excavation operations that might exceed one day to complete.
First Responder Responsibilities
It is the responsibility of the first personnel who arrive at the site of a sewer overflow to protect the health and safety of the public by mitigating the impact of the overflow to the best extent possible.
Should the overflow not be the responsibility of the City of Corona but there is imminent danger to public health, public or private property, or to the quality of waters of the U. S., the City of Corona takes prudent emergency action until the responsible party assumes responsibility and provides actions. Upon arrival at an SSO, the response crew:
• Determines the cause of the overflow, e.g. sewer line blockage, pump station mechanical or electrical failure, sewer line break, etc.; • Take immediate steps to contain the overflow - e.g., block or bag storm drains, recover through vacuum truck, divert into downstream manhole, etc. • Determines the immediate destination of the overflow - e.g. storm drain, street curb gutter, body of water, creek bed, etc.
• Recover where possible sewage which has already been discharged. This can aid in minimizing impacts on public health or the environment. • Estimates the volume and the flow and reports to second responder and Regulatory Compliance Division.
• Determines if private property is impacted. If yes, inform the Construction Superintendent.
• Takes immediate steps to stop the overflow, e.g. relieves pipeline blockage, manually operates pump station controls, repairs pipe, etc. Extraordinary steps may be considered where overflows from private property threaten public health and safety SEWER SYSTEM MANAGEMENT PLAN Page | 44
(e.g., an overflow running off of private property into the public right- of-way); • Takes appropriate measures to protect the health and safety of affected public and/or property.
The second responder has the responsibility of identifying and requesting, if necessary, assistance or additional resources to correct, contain, or isolate the overflow or to assist in the determination of its cause. Sewer overflow rates to aid in volume estimation are included in Appendix K along with the Four C’s.
Additional Measures under Potentially Prolonged Overflow Conditions In the event of a prolonged sewer line blockage or a sewer line collapse, set up a portable by-pass pumping operation around the obstruction.
• Take appropriate measures to determine the proper size and number of pumps required to effectively handle the sewage flow.
• Implement continuous or periodic monitoring of the by-pass pumping operation as required.
• Address regulatory agency issues in conjunction with emergency repairs.
Clean-up
Clean sewer overflow sites thoroughly after an overflow, including drainage conveyance systems.
No readily identified residue (e.g., sewage solids, papers, rags, plastics, and rubber products) is to remain.
• Where practical, thoroughly flush the area and clean off any sewage or wash- down water. Solids and debris are to be flushed, swept, raked, picked-up, and transported for proper disposal.
• Secure the overflow to prevent contact by members of the public until the site has been thoroughly cleaned.
• Where appropriate, disinfect and deodorize the overflow site. • Where sewage has resulted in ponding, pump the area dry and dispose of the residue in accordance with applicable regulations and policies. • If a ponded area contains sewage which cannot be pumped dry, it may be treated with bleach. If sewage has discharged into a drainage conveyance system or body of water that may contain fish or other aquatic life, do not use bleach or other disinfectants.
Monitoring
If 50,000 gallons or more of untreated or partially treated sewage reaches surface water, then water quality monitoring is required within 18 hours after initial notification of the spill. The SSO Water SEWER SYSTEM MANAGEMENT PLAN Page | 45
Quality Monitoring SOP is included in Appendix L. Results of the water quality monitoring along with an SSO Technical Report will be uploaded to CIWQS by the Regulatory Compliance Division staff.
Assessments
Following an SSO event, post-spill assessments are required to evaluate spill response activities and determine procedures and actions to improve spill response. During post-spill assessment, actions to further prevent and minimize SSOs should be considered.
Annually, the effectiveness of the Spill Response Plan shall be reviewed and assessed and shall be updated as needed.
Training
All first and second responders are to be appropriately trained to respond to SSOs and are required to review training materials annually. Each responder is provided a field guide which includes all SOPs, notification procedures, reporting forms, and reference material. Internal staff are trained on appropriate response actions should they receive notification by phone or email of a possible SSO. All contractors are instructed to immediately notify Corona Utilities Department in the event of an SSO.
COMPLIANCE SUMMARY
The Sanitary Sewer Overflow Emergency Response Plan, training material, and SOPs are designed to minimize the effects of a sewer spill on the environment and public health and outlines notification and reporting procedures in the event of an overflow. These materials are reviewed annually and are updated as needed.
SEWER SYSTEM MANAGEMENT PLAN Page | 46
SECTION 7.0
SEWER PIPE BLOCKAGE
CONTROL PROGRAM
SEWER SYSTEM MANAGEMENT PLAN Page | 47
7.0 SEWER PIPE BLOCKAGE CONTROL PROGRAM
REGULATORY REQUIREMENTS
D.7. Sewer Pipe Blockage Control Program:
The Sewer System Management Plan must include procedures for the evaluation of the Enrollee’s service area to determine whether a sewer pipe blockage control program is needed to control fats, oils, grease, rags and debris. If the Enrollee determines that a program is not needed, the Enrollee shall provide justification in its Plan for why a program is not needed. The procedures must include, at minimum:
• An implementation plan and schedule for a public education and outreach program that promotes proper disposal of pipe-blocking substances; • A plan and schedule for the disposal of pipe-blocking substances 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 substances generated within a sanitary sewer system service area; • The legal authority to prohibit discharges to the system and identify measures to prevent spills and blockages;
• Requirements to install grease removal devices (such as traps or interceptors), design standards for the removal devices, maintenance requirements, best management practices requirements, recordkeeping and reporting requirements;
• Authority to inspect grease producing facilities, enforcement authorities, and whether the Enrollee has sufficient staff to inspect and enforce the fats, oils, and grease ordinance;
• An identification of sanitary sewer system sections subject to fats, oils, and grease blockages and establishment of a cleaning schedule for each section; and
• Implementation of source control measures for all sources of fats, oils, and grease reaching the sanitary sewer system for each section identified above.
COMPLIANCE
The City of Corona Utilities Department (UD) established an ongoing FOG control program with the proper authority to regulate and run the program effectively. The City retains the services of G&G Environmental Compliance, Inc. to maintain and implement the City's EPA approved Source Control/Pretreatment Program.
SEWER SYSTEM MANAGEMENT PLAN Page | 48
PUBLIC EDUCATION OUTREACH
The City has a comprehensive public outreach program for residential and commercial customers that consist of: utility bill inserts, door hangers, Facebook and Twitter, newsletters, LED signs, and community events. All information is available in English and Spanish.
The City’s public outreach program includes information on proper disposal of FOG for residential, commercial, and industrial dischargers. An educational FOG bill insert is mailed out to all customers and is available on our website (see Appendix M). This bill insert informs customers why it is not appropriate to dispose of fats, oils, and grease down the drain and the consequences for dumping these products down the drain. Additionally, staff in the Source Control Division created two flyers; one on Best Management Practices (BMPs) for restaurants (Appendix N) and the other for automotive repair (Appendix O). These BMPs educate commercial and industrial dischargers on limiting pollutants discharged into the sewer system which includes oil and grease. The BMP flyers are provided to customers during interceptor inspections and are included with the restaurant questionnaire (Appendix P).
The City also has an ongoing public awareness campaign to encourage proper disposal of unused medications. The “No Drugs Down the Drain” program includes bill inserts, banners, LED signs within the community, letters, magnets, and brochures to pharmacies and doctor’s offices in Corona.
Educational outreach material is posted on the City of Corona Utilities Department’s website under the learn more tab. In addition, the fliers and brochures are handed out at numerous events throughout the year reaching thousands of households.
Utilities Department | City of Corona (coronaca.gov)
A variety of other public outreach materials and programs are made available to residential customers through Western Riverside Council of Governments (WRCOG).
The City also has its own decanting station for pipe blocking substances at Water Reclamation Facility No. 1. Collected solids are taken to Waste Management and liquids are circulated back to the Water Reclamation Facility No. 1 headworks.
LEGAL AUTHORITY
The City has the legal authority to prohibit the discharge of pipe blocking substances into the sanitary sewer system. FOG, sediment, and floating materials is explicitly prohibited in Municipal Code Chapter 13.08 - Public Sewerage System Waste Regulations. The City has the authority per § 13.08.160 to inspect and sample all users’ interceptors and requires customers SEWER SYSTEM MANAGEMENT PLAN Page | 49
to make their interceptors immediately accessible at all times for inspection by the City. The City has the legal right to enforce this ordinance by way of its Enforcement Response Plan (ERP) (Appendix C).
GRAVITY SEPARATION INTERCEPTORS (GREASE REMOVAL DEVICES) The City requires applicable businesses to have an appropriate grease removal device. Section
13.08.110(C) of the Municipal Code states that, “All restaurant wastewater and wastes from floor drains, floor sinks, sinks, waste container wash racks, dishwashers and garbage grinders to be directed through a minimum 750-gallon gravity separation interceptor.” Additionally, §
13.08.150 states that, “Any person that operates or maintains a facility for the servicing or repair of roadway machinery, industrial transportation equipment, motor vehicles or any other facility as required by the Director of Utilities shall install and maintain a gravity separation interceptor.”
The City references the 2019 California Plumbing Code Section 1014.0 for grease interceptor design standards and the Municipal Code interceptor design requirements in § 13.08.170.
Interceptor maintenance requirements are included in § 13.08.180. All businesses with interceptors are scheduled to be inspected on a quarterly basis, but at a minimum frequency of at least once a year. All businesses must fill out business use questionnaires or if new, an industrial wastewater questionnaire, which is then passed on to the Source Control Division who evaluates the need for a grease removal device.
The City’s Source Control/Pretreatment Program is self-supporting; § 13.08.390 of the Municipal Code states that, “The City is authorized to recover costs from users for the implementation of the City’s pretreatment program. These fees relate exclusively to matters covered by this chapter and are separate from all other fees chargeable by the City.” While developing the original SSMP, the City became aware of the importance in holding all FOG dischargers accountable for all aspects of their interceptor maintenance. Thus, the City determined that FOG dischargers needed to be charged to cover staff inspection time, ability to keep the source control program self-sufficient, and to maintain consistency with the rules and regulations as outlined in 40 CFR 403, Protection of the Environment. The inspection fees, as approved by the City Council, are based on the time the source control inspector spends on a typical FOG discharger’s interceptor over a one-year period.
DISPOSAL
The City requires all businesses with a gravity separation interceptor to properly maintain the interceptor at all times. The interceptor shall be cleaned as often as necessary to ensure that sediment and floating materials do not accumulate to impair the efficiency of the interceptor.
An interceptor is not considered to be properly maintained if for any reason the interceptor is not in good working condition or if the operational fluid capacity has been reduced by SEWER SYSTEM MANAGEMENT PLAN Page | 50
more than 25% by the accumulation of sediment and floating oils and greases.
The City does not accept FOG at any of its facilities but can provide a list of local waste haulers upon request. When an interceptor is cleaned, the removed sediment and floating material shall be legally disposed of and shall not be placed or discharged into the sewer system.
Records of the interceptor cleaning are required to be available on- site for review for three years.
The City utilizes an outside contractor to clean and video the City’s sewer system. The waste collected during the cleaning is disposed of at Water Reclamation Facility No. 1 in a designated refuse area. No grease is allowed to be disposed of in the City’s sewer system or at the City’s Publicly Owned Treatment Works (POTW).
MAINTENANCE AND CLEANING SCHEDULES
Areas that have a sanitary sewer overflow as a result of FOG and other pipe blocking substances or that are known to have frequent build up in the sewer system are placed on a maintenance and cleaning schedule. The frequency varies depending on the severity of buildups in the area.
See Section 4.0, Operation and Maintenance Program, for further details regarding maintenance and cleaning determination and schedules.
If a particular area is experiencing frequent sanitary sewer overflows or a problem is observed in the sewer line, the City has developed a door hanger which would be distributed in the immediate area. The door hanger (Appendix Q) indicates the problem observed and what can be done to solve the problem, along with ways residents can prevent sanitary sewer overflows.
PROGRAM IMPLEMENTATION
The City maintains sufficient staff to enforce and implement the source control program. There is always at least one inspector that is actively monitoring the source control program on a daily basis. All FOG generating facilities that have an interceptor device are inspected on a quarterly basis, or annually at a minimum, to ensure the interceptors are being maintained. All inspections are recorded into the Linko database which tracks nearly 521 active devices throughout the City. In 2015, all monitored facilities were divided into 6 zones to improve the efficiency of the FOG inspections. The City has an active inspection program in place.
COMPLIANCE SUMMARY
The City utilizes various methods to reduce the number of spills caused by pipe-blocking substances. This includes public outreach, legal authority, grease removal devices, and regular inspection and maintenance. The program is reviewed and updated on a regular basis and is implemented by the City’s source control program.
SEWER SYSTEM MANAGEMENT PLAN Page | 51
SECTION 8.0
SYSTEM EVALUATION,
CAPACITY ASSURANCE
PLAN, & CAPITAL
IMPROVEMENTS
SEWER SYSTEM MANAGEMENT PLAN Page | 52
8.0 SYSTEM EVALUATION AND CAPACITY ASSURANCE PLAN
This information is contained with the Utilities Department’s Sewer Master Plan.
REGULATORY REQUIREMENTS
D.8 The Plan must include procedures and activities for:
• Routine evaluation and assessment of system conditions; • Capacity assessment and design criteria;
• Prioritization of corrective actions; and
• A capital improvement plan.
8.1 System Evaluation and Condition Assessment - The Plan must include procedures to:
• Evaluate the sanitary sewer system assets utilizing the best practices and technologies available;
• Identify and justify the amount (percentage) of its system for its condition to be assessed each year;
• Prioritize the condition assessment of system areas that: Hold a high level of environmental consequences if vulnerable to collapse, failure, blockage, capacity issues, or other system deficiencies;
• Are located in or within the vicinity of surface waters, steep terrain, high groundwater elevations, and environmentally sensitive areas; • Are within the vicinity of a receiving water with a bacterial-related impairment on the most current Clean Water Act section 303(d) List;
• Assess the system conditions using visual observations, video surveillance and/or other comparable system inspection methods;
• Utilize observations/evidence of system conditions that may contribute to exiting of sewage from the system which can reasonably be expected to discharge into a water of the State;
• Maintain documents and recordkeeping of system evaluation and condition assessment inspections and activities; and
• Identify system assets vulnerable to direct and indirect impacts of climate change, including but not limited to: sea level rise; flooding and/or erosion due to increased storm volumes, frequency, and/or intensity; wildfires; and increased power disruptions.
SEWER SYSTEM MANAGEMENT PLAN Page | 53
8.2 Capacity Assessment and Design Criteria - The Plan must include procedures to identify system components that are experiencing or contributing to spills caused by hydraulic deficiency and/or limited capacity, including procedures to identify the appropriate hydraulic capacity of key system elements for:
• Dry-weather peak flow conditions that cause or contributes to spill events; • The appropriate design storm(s) or wet weather events that causes or contributes to spill events;
• The capacity of key system components; and
• Identify the major sources that contribute to the peak flows associated with sewer spills.
• The capacity assessment must consider:
• Data from existing system condition assessments, system inspections, system audits, spill history, and other available information; • Capacity of flood-prone systems subject to increased infiltration and inflow, under normal local and regional storm conditions;
• Capacity of systems subject to increased infiltration and inflow due to larger and/or higher-intensity storm events as a result of climate change; • Increases of erosive forces in canyons and streams near underground and aboveground system components due to larger and/or higher-intensity storm events; • Capacity of major system elements to accommodate dry weather peak flow conditions, and updated design storm and wet weather events; and necessary redundancy in pumping and storage capacities.
8.3 Prioritization of Corrective Action - The findings of the condition assessments and capacity assessments must be used to prioritize corrective actions. Prioritization must consider the severity of the consequences of potential spills.
8.4 Capital Improvement Plan - The capital improvement plan must include the following items:
• Project schedules including completion dates for all portions of the capital improvement program;
• Internal and external project funding sources for each project; and SEWER SYSTEM MANAGEMENT PLAN Page | 54
• Joint coordination between operation and maintenance staff, and engineering staff/consultants during planning, design, and construction of capital improvement projects; and Interagency coordination with other impacted utility agencies.
8.1-8.3 SYSTEM EVALUATION AND CONDITION ASSESSMENT, DESIGN CRITERIA, CORRECTIVE
ACTIONS
COMPLIANCE
The City Sewer Master Plan was completed in September 2005 which is currently being updatd. It is a long-term, forward-looking planning tool. It evaluates the existing and future system conditions and provides a footprint and planning guidance for the wastewater collection and conveyance system. The analysis of the City’s ultimate gravity sewer system was based upon general plan land uses (year 2020).
Flow monitoring programs, hydraulic condition assessments, master plans, and capital improvement programs are essential elements of the City’s System Evaluation and Capacity Assurance Plan. The City’s efforts to evaluate the hydraulic capacity of the system to prevent capacity related SSOs are summarized in the City’s Sewer Master Plan adopted by Council Action in 2005.
The City’s sewer system has sufficient capacity to handle peak dry weather flows and has not experienced any wet weather overflows. In addition, through proactive efforts, dry weather overflows have decreased. However, some dry weather overflows continue to occur due to tree roots, grease blockages, and vandalism. The City has eliminated dry weather overflows resulting from power outages or equipment failures.
The City has an on-going dry and wet weather flow monitoring program. The City owns and operates fifteen (15) sewage lift stations located throughout the City. All of the lift stations are maintained and operate reliably.
The City will further assess sewer system conditions including vulnerable and environmentally sensitive areas, as well as areas that are sensitive to impacts of climate change in the updated Sewer Master Plan, which is expected to be completed in 2026.
COMPLIANCE SUMMARY
The City assesses its sewer system for deficiencies via the Sewer Master Plan which is expected to be completed in 2026.
SEWER SYSTEM MANAGEMENT PLAN Page | 55
8.4 CAPITAL IMPROVEMENT PROGRAM
COMPLIANCE
The ultimate goal of the capital improvement program is to provide the City with a long- range planning tool, to orchestrate construction of infrastructure improvements in an orderly manner, and to keep pace with the City’s growth. Capital improvement projects have been developed based upon the results of the hydraulic analyses, physical inspection of the lift station facilities, CCTV inspections, and review and City’s capital improvement projects.
Projects recommended in the City’s Sewer Master Plan are prioritized according to system vulnerability. Project schedules outlined in the Sewer Master Plan are recommendations and are routinely reviewed and prioritized based on variety of reasons. Some of those reasons are as follows:
• Technical analysis
• Financial considerations
• New or changing needs
Operations, maintenance, and engineering staff also meet monthly to discuss updates to capital improvement projects including but not limited to budgets and progress reports.
COMPLIANCE SUMMARY
As collection system deficiencies are identified in the Sewer Master Plan, vulnerable areas are added as capital improvement projects for rehabilitation or replacement. City staff in various divisions meet regularly to address these matters.
SEWER SYSTEM MANAGEMENT PLAN Page | 56
SECTION 9.0
MONITORING, MEASUREMENT,
& PROGRAM MODIFICATIONS
SEWER SYSTEM MANAGEMENT PLAN Page | 57
9.0 MONITORING, MEASUREMENT, AND PROGRAM MODIFICATIONS
REGULATORY REQUIREMENTS
COMPLIANCE
The City of Corona Utilities Department has multiple ongoing programs that support the collection and management of data and information essential to successful implementation of its Sewer System Management Plan.
The City’s information management systems are an integral and essential element of the operation and maintenance program. Information regarding sewer conditions and overflows are reported to the City’s GIS system. The City’s contractor continuously flushes and televises the City’s sewer system. All closed-circuit television (CCTV) records are submitted to our GIS staff. The information is updated into the system regularly.
Every area where a sanitary sewer overflow occurs is televised and evaluated for possible causes. The video is also evaluated for future problems that may occur due to some type of activity that may be occurring, such as roots, grease, fractures in pipes, etc. The appropriate repairs are made when any deficiencies are discovered. The City’s GIS system includes the ability to watch CCTV activity in areas of concern. The majority of the film is taken at least 1000 ft. upstream of the overflow. The contractor submits a video of the sewer line to the City which includes voice records of identified items and distances within the pipe segment. All SSOs are reported to the SWRCB through CIWQS.
D.9 Monitoring, Measurement, and Program Modifications: The Plan must include an Adaptive Management section that addresses Plan-implementation effectiveness and the steps for necessary Plan improvement, including:
• Maintain relevant information that can be used to establish and prioritize appropriate SSMP activities;
• Monitoring the implementation and measuring the effectiveness of each Plan element;
• Assessing the success of the preventative operation and maintenance activities;
• Updating Plan procedures and activities, as appropriate, based on results of monitoring or performance evaluations; and
• Identifying and illustrating spill trends, including: spill frequency, location, and volume.
SEWER SYSTEM MANAGEMENT PLAN Page | 58
COMPLIANCE SUMMARY
The City collects and maintains all records on every sanitary sewer overflow incident including spill reports, photographs, and maps. Performance indicators are reviewed and measured annually. The SSMP is reviewed, and audits are conducted as scheduled; every 6 years for SSMP updates and every 3 years for internal audits.
SEWER SYSTEM MANAGEMENT PLAN Page | 59
SECTION 10.0
SSMP PROGRAM
INTERNAL AUDITS
SEWER SYSTEM MANAGEMENT PLAN Page | 60
10.0 SSMP PROGRAM AUDITS
REGULATORY REQUIREMENTS
D.10 SSMP Program Audits - The Plan shall include internal audit procedures, appropriate to the size and performance of the system, for the Enrollee to comply with section 5.4 (Sewer System Management Plan Audits) of this General Order.
COMPLIANCE
This section requires the Utilities Department to develop an audit program on the effectiveness of the Sanitary Sewer Management Plan.
The responsible individuals who conduct the internal audit are the Regulatory Compliance Division staff in conjunction with the Maintenance Manager and/or the Utility Maintenance Superintendent. Input from sewer system operators on audit findings are considered and a statement is included in the Audit Report. Internal audits are conducted at a minimum frequency of every three years using the audit form included in Appendix S. Within six months after the end of the required three-year audit period, the Legally Responsible Official (LRO) certifies the audit report into CIWQS which is available only to Waterboard staff.
COMPLIANCE SUMMARY
The City’s Sanitary Sewer Management Plan is updated according to the findings of internal audit reports, which are conducted as scheduled with a minimum frequency of once every three years. This ensures sewer spills are minimized, and all requirements of the General Order are met.
SEWER SYSTEM MANAGEMENT PLAN Page | 61
SECTION 11.0
COMMUNICATION PROGRAM
SEWER SYSTEM MANAGEMENT PLAN Page | 62
11.0 COMMUNICATION PROGRAM
REGULATORY REQUIREMENTS
D.11 Communication Program - The Plan must include procedures for the Enrollee to communicate with:
• The public for:
o Spills and discharges resulting in closures of public areas, or that enter a source of drinking water, and
o The development, implementation, and update of its Plan, including opportunities for public input to Plan implementation and updates. • Owners/operators of systems that connect into the Enrollee’s system, including satellite systems, for:
o System operation, maintenance, and capital improvement-related activities
COMPLIANCE
The City of Corona Utilities Department maintains a website with information about the Department, the various programs and services, contact information, newsletters, public outreach materials, latest news, events, and the current SSMP. The City of Corona’s primary “customers” are the residential, industrial, and commercial users. Customers can contact the Department by phone or email with questions or feedback on various Department programs.
Additionally, the SSMP is brought to a public City Council meeting for adoption when significant updates are made and at a minimum frequency of every six years. The City also has a plan for communication with systems that are tributary and/or satellite to the sanitary sewer system.
Utilities Department | City of Corona (coronaca.gov)
COMPLIANCE SUMMARY
The City of Corona conducts public outreach and education to residents and businesses related to sanitary sewer overflows, preventing grease blockages, and Best Management Practices for handling grease waste. Customer outreach includes bill inserts, newsletters, public events, social media posts and an annual consumer confidence report. In addition, the City’s Source Control Program inspects food service facilities quarterly for compliance with Best Management Practices and grease removal device maintenance and distributes educational materials during these inspections. The City also conducts plan checks for all new and remodeling restaurants and other food service facilities.
SEWER SYSTEM MANAGEMENT PLAN Page | 63
Internally, the City will communicate within various Departments, such as Regulatory, Public Works, Building and Code Enforcement regarding the overall Sewer System Management Plan, program audits, emergency response plan, FOG program, and design standards.
Plumbers and sewer contractors have access to all available City of Corona plans, specifications, and standard details.
SEWER SYSTEM MANAGEMENT PLAN Page | 64
SSMP APPENDICES
List of Appendices
Appendix A – City of Corona Contact List
Appendix B – Standby Schedule
Appendix C – City of Corona Pretreatment Program Enforcement Response Plan Appendix D – SSO Notification Procedure
Appendix E – SSO Incident Response Form
Appendix F – SSO Reporting Form
Appendix G – Initial Spill Notification Procedure
Appendix H – SSO Response SOP
Appendix I – SOP for Responding to Private Sewer Spills Appendix J – Lift Station Information Table
Appendix K – The Four C’s of a Sewage Overflow
Appendix L – SSO Water Quality Monitoring SOP
Appendix M – FOG Bill Insert
Appendix N – Restaurant BMP Flyer
Appendix O – Automotive Repair BMP Flyer
Appendix P – Restaurant Questionnaire
Appendix Q – FOG Door Hanger
Appendix R – SSMP Change Log
Appendix S - Audit Form
APPENDIX A
CITY OF CORONA CONTACT LIST
Position First Last Office Mobile Email
Utilities Director Tom Moody 951.279.3660 951.830.2319 [email protected] Assistant Utilities Director Katie Hockett 951.279.3660 951.545.0015 [email protected] Assistant Utilities Director Aftab Hussain 951-736-2443 951-741-7626 [email protected] Regulatory Compliance Specialist Korina Rangel 951.279.3688 [email protected] Stacy Joyce 951.736.2265 [email protected]
Nicole Quinlan 951.279.3624 [email protected] Maintenance Manager/LRO Aftab Hussain 951.736.2443 951.741.7626 [email protected] Utility Maintenance Superintendent David Ortiz 951-739-4915 951-992-8633 [email protected] Utility Service Worker Richard Betancourt 951.903.9072 [email protected] Jerry Ferguson 951.377.0768 [email protected] Chris Jardine 951.830.2362 [email protected]
Fernando Razo 951.377.0227 [email protected]
Kurtis Stabile 951.830.1216 [email protected] Hector Urias 951.712.0458 [email protected]
Chris Vila 951.817.4977 [email protected]
Juan Guzman 951.532.0021 [email protected]
Mike Soto 951.545.8660 [email protected]
Jose Magana 951.496.9381 [email protected]
Marcus DeVoe 951.496.6696 [email protected]
Francisco Yepez 951.415.2290 [email protected] Utility Maintenance Superintendent Rodney Williams 951.377.0541 [email protected] Utility Maintenance Technician Leslie Garrison 951.830.0212 [email protected] Kristopher Bash 951.496.6061 [email protected] Shawn Kelly 951.830.2347 [email protected]
Timothy Oates 951.830.4649 [email protected]
Rusty Stabile 951.830.2154 [email protected]
Jose Zaragoza 951.903.9269 [email protected]
Scott Macias 951.207.2671 [email protected]
Andrew Kreger 951.736.2234
Mario Sedano 951.403.0033 [email protected]
Kenneth Lane 951.415.1592 [email protected]
Regulatory Agency Notification List CalOES 1.800.852.7550 RWQCB 951.320.6362
SWRCB 951.782.4130 [email protected]
For Category 1 spills 1,000 gallons or greater to surface waters.
Notify Regulatory Agency if outside work hours within 2 hours of spill
CITY OF CORONA
UTILITIES DEPARTMENT
SSMP CONTACT LIST
APPENDIX B
STANBY SCHEDULE
January 2023 through June 2023
01/02-01/09 01/02-01/11
DeVoe for Ferguson Jardine
01/09-01/16 01/09-01/16
Yepez Stabile
01/16-01/23 01/16-01/23
Cataldo Guzman
01/23-01/30 01/23-01/30
Razo Betancourt
01/30-02/06 01/30-02/06
Magana Urias
02/06-02/13 02/06-02/13
Ferguson Soto
02/13-02/20 02/13-02/20
DeVoe Jardine
02/20-02/27 02/20-02/27
Yepez Stabile
02/27-03/06 02/27-03/08
Cataldo Betancourt
03/06-03/13 03/06-03/13
Razo Guzman
03/13-03/20 03/13-03/20
Magana Urias
03/20-03/27 03/20-03/27
Ferguson Soto
03/27-04/03 03/27-04/03
Stolz Jardine
04/03-04/10 04/03-04/10
DeVoe Stabile
04/10-04/17 04/10-04/17
Yepez Betancourt
04/17-04/24 04/17-04/24
Cataldo Guzman
04/24-05/01 04/24-05/03
Razo Urias
05/01-05/08 05/01-05/08
Magana Soto
05/08-05/15 05/08-05/15
Ferguson Jardine
05/15-05/22 05/15-05/22
Stolz Stabile
05/22-05/29 05/22-05/29
DeVoe Betancourt
05/29-06/05 05/29-06/05
Yepez Guzman
06/05-06/12 06/05-06/14
Cataldo Urias
06/12-06/19 06/12-06/19
Razo Soto
06/19-06/26 06/19-06/26
Magana Jardine
06/26-07/03 06/26-07/03
Ferguson Stabile
07/03-07/10 07/03-07/10
Stolz Betancourt
Infrastructure Standby phone: 951-830-2391
Maintenance standby phone: 951-403-5596
Infrastructure 1st responder
Monday to Monday
Infrastructure 2nd responder
Monday to Monday
Wences DeVoe
Morales Vila
Diaz Ferguson
Magana Urias
Wences Betancourt
Morales Stabile
Diaz Yepez
Magana Devoe
Wences Vila
Morales Ferguson
Diaz Urias
Magana Stabile
Wences Betancourt
Morales Yepez
Diaz DeVoe
Magana Vila
Wences Ferguson
Morales Urias
Diaz Stabile
Magana Betancourt
Wences Yepez
Morales DeVoe
Diaz Vila
Magana Ferguson
Wences Urias
06/16/2025-----06/23/2025
06/23/2025-----06/30/2025
Standby phone: 951-830-2391
05/05/2025-----05/12/2025
05/12/2025-----05/19/2025
05/19/2025-----05/26/2025
05/26/2025-----06/02/2025
06/02/2025-----06/09/2025
06/09/2025-----06/16/2025
04/28/2025-----05/05/2025
02/10/2025-----02/17/2025
02/17/2025-----02/24/2025
02/24/2025-----03/03/2025
03/03/2025-----03/10/2025
03/10/2025-----03/17/2025
03/17/2025----03/24/2025
03/24/2025-----03/31/2025
03/31/2025-----04/07/2025
04/07/2025-----04/14/2025
04/14/2025-----04/21/2025
04/21/2025-----04/28/2025
02/03/2025-----02/10/2025
January 2025 through June 2025
01/06/2025-----01/13/2025
01/13/2025-----01/20/2025
01/20/2025-----01/27/2025
01/27/2025-----02/03/2025
APPENDIX C
CITY OF CORONA PRETREATMENT
PROGRAM ENFORCEMENT
RESPONSE PLAN
APPENDIX D
SSO NOTIFICATION PROCEDURE
Revised 02/03/2025
Continue to Page 2
If YES, report as Category 1
Within 2 hours for Category 1 Spills
>1,000 gallons notify by phone
(Use total spill volume)
1. California Warning Center/Office of
Emergency Services and obtain a
notification control number
1-800-852-7550
2. Regional Water Quality Control
Board Najah Amin (951) 320-6362
3. Aftab Hussain (951) 736-2443
Second Responder immediately call the
Utility Maint.Superintendent (951) 992-8633
and Maintenance Manager (951) 736-2443
NO
YES
YES
YES
SSO NOTIFICATION PROCEDURE Page 1 of 2
SSO OF ANY VOLUME
DURING WORK HOURS AFTER WORK HOURS
Immediately call the Regulatory Compliance
Division to report the spill (951) 279-3688
First Responder is to immediately call the
Second Responder to report the spill
Immediately call the
Utility Maint.Superintendent (951) 992-8633
and Maintenance Manager (951) 736-2443
Second Responder will make the following
notifications according to the spill Category
AND notify the Regulatory Compliance
Division by the next business day
Utility Maint.Superintendent or Maintenance Manager will notify the Director of Utilities, Assistant Director of Utilities, and Operations Manager of any SSOs of any volume
START – Must answer 1-3 below
2. Did spill reach surface water?
1. Did spill reach a drainage channel that is
a tributary to surface water?
NO
3. Did spill reach a storm drain and was not
fully captured?
NO
*Note: If more than 50,000 gallons is spilled to surface water then we are required to conduct water quality monitoring within 18 hours after initial notification. Refer to the SSO Water Quality Monitoring SOP for details.
Regulatory Compliance Division will make
the following notifications according to the
spill Category
Revised 02/03/2025
Notify by phone
1. Cal OES, 1-800-852-7550
2. Regional Water Quality Control Board
(951) 782-4130
3.Aftab Hussain (951) 736-2443
If YES, report as Category 2
SSO NOTIFICATION PROCEDURE Page 2 of 2
Any spills greater than 50 gallons but
less than 1,000 gallons that did not
enter surface water (all Category 1
questions were answered with No)
Notify Regulatory Compliance Division,
submit forms to Regulatory Compliance
Division by the next business day
NO
Any spill > 1,000 gallons that did not
enter surface water (all Category 1
questions were answered with No)
(use total spill volume)
If YES, report as Category 3
Any spills less than 50 that did not
enter surface water (all Category 1
questions were answered with No)
NO
Notify Regulatory Compliance Division,
submit forms to Regulatory Compliance
Division by the next business day
If YES, report as Category 4
Lateral Spills
>1,000 gallons that discharges or threatens to discharge to surface waters, notify CalOES within 2 hours and obtain a notification control number.
For lateral spills less than 1,000 gallons, notify Regulatory Compliance Division by the next business day.
APPENDIX E
SSO INCIDENT RESPONSE FORM
Revised 2/20/20
CALLER INFORMATION
Location of SSO (Address): ______________________________________________________________ Caller Name: _________________________________ Phone: __________________________________ Receipt of Call: Date______ /___ /______ Time: __________ AM PM Call Received By: _______________________________ Call Dispatch: Date ____ /____ /_____ Time: _________ AM PM Assigned To: __________________________________________ Follow up email sent to: __________________________________________________________________
CALLER INTERVIEW
Where did you see sewage spill from?
Time Caller noticed spill: _______________ AM PM Date: ____ /____ /_____ Comments: ___________________________________________________________________________ _____________________________________________________________________________________ SSO INCIDENT RESPONSE FORM Page 1 of 6
RESPONDER OBSERVATIONS
Responder Arrival Date: ____ /___ /_____ Time: ___________ AM PM Spill Location Address: ________________________________________________________________ Spill observed from: ______________________ Structure ID: ________________________________ Spill Destination: Building Paved Surface Storm Drain
Curb/Gutter Unpaved Other ___________________________
SPILL DURATION
SSO Start Date: ____ /___ /_____ Time: ___________ AM PM SSO End Date: ____ /___ /_____ Time: ___________ AM PM
SSO Duration ________________ Minutes
Describe how the start time or duration was determined _______________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Revised 2/20/20
SSO INCIDENT RESPONSE FORM Page 2 of 6
SSO VOLUME ESTIMATION
Accurate start time determination is an essential part of the SSO volume estimation. Depending on the flow rate, being even one minute off can have a huge impact on the volume estimation. Be as precise as possible.
Do not round to quarter hour increments. Start time must be based on all available information (interviews with neighbors, first responders, etc.). Please reference the Orange County Sewer Spill Estimation Guide.
There are various ways to estimate spill volume, choose one and document your findings.
Pictorial Reference ___CWEA Ruler ____ Vent or Pick Hole Chart ____Eyeball Estimate Method Measured Volume Method ___Counting Connections ___Manhole Ring ___Partially Covered Manhole ___Open Manhole
Estimated Flow ___Bucket Method ___Gutter Flow Method ___Metered Flow ___Pipe Size Method ___Rain Event Method
Saturated Soil Method Vactor Truck Recovery
Other (explain) i.e.; estimated daily use per capita upstream or meter @ Pump Station. ______________________________________________________________________________________ If spill is observed from manhole picks, measure the height. Take photos.
Water Height ____________ inches. Use the vent hole estimation chart to determine flow rate.
Flow Rate _______________ gpm. Multiply the flow duration in minutes by the flow rate to determine volume of spill.
_________ gpm x _________ minutes = __________ gallons
If spill is observed from sides of manhole cover, measure the height of spout above manhole rim and take phots.
Water Height ____________ inches. Use the estimated SSO flow out of MH with cover in place chart to determine flow rate.
Flow Rate _______________ gpm. Multiply the flow duration in minutes by the flow rate to determine volume of spill.
_________ gpm x _________ minutes = __________ gallons
If spill has stopped, one option is to use Measured Volume Method (this may take several calculations as you may have to break down the odd shaped spill to rectangles, circles, and polygons). It is important when guessing depth to measure, if possible, in several locations and use an average depth. Use the SSO Volume Estimation by Area Work Sheet, if necessary, to sketch the shapes and show your work.
SSO INCIDENT RESPONSE FORM Page 3 of 6
Revised 2/3/25
SSO VOLUME ESTIMATION BY AREA WORKSHEET
1. Draw a sketch of the spill.
2. Draw shapes and dimensions used on your sketch.
3. Use correct formula for various shapes.
Surface
Asphalt
Concrete Dirt Landscape
Inside Building
Other _______________
(Draw / Sketch outline of Spill ‘Footprint’ and attach photos) ~~ Breakdown the ‘Footprint’ into Recognizable Shapes and Determine Dimensions of Each Shape ~~ Divide the inches by 12 to convert to feet. One cubic foot = 7.48 gallons Show calculations:
Revised 2/3/25
SPILL CONTAINMENT
Containment Measures:
________Plugged Storm Drain ________Washed Down
________Vacuum up Water/Sewage ________Other Measures
________ Sandbags
____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ CATEORY 1 DETERMINATION
A. Did the spill reach surface water? YES NO
B. Did the spill reach a drainage channel that is a tributary to surface water? YES NO C. Did the spill reach a storm drain and was not fully captured? YES NO If you answered YES to question A, B, or C the spill is a Category 1 **Any Category 1 spill >1,000 gallons must be reported to EOS & RWQCB within 2 hours ***Water quality sampling required for spills 50,000 gallons or greater (USE TOTAL SPILL VOLUME, DO NOT INLCUDE VACTOR TRUCK VOLUME FROM SEWER) SSO INCIDENT RESPONSE FORM Page 1 of 3
NOTIFICATIONS
Notifications were made to:
OES 1-800-852-7550 Time: ________ AM PM Control Number: ______________ Notification made by: ____________________________ Date: _____ /____ /_____ RWQCB - Najah Amin (951) 320-6362 Time: ________ AM PM
Notification made by: ____________________________ Date: _____ /____ /_____ Aftab Hussain (951) 736-2443 Time: ________ AM PM
Notification made by: ____________________________ Date: _____ /____ /_____ Regulatory Division (951) 279-3688 Time: ________ AM PM Notification made by: ____________________________ Date: _____ /____ /_____ Comments: ____________________________________________________________________
Revised 2/3/25
SSO INCIDENT RESPONSE FORM Page 5 of 6
STORM DRAIN INFORMATION
Did the spill reach a storm drain or drainage channel? YES NO Name, location, or description of drain or drainage channel ____________________________________ ___________________________________________________________________________________ Where does the storm drain go to? _______________________________________________________ Was the spill recovered from the storm drain or drainage channel? ______________________________ Describe how, where, and or why not _____________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________
CLEAN UP
Spill response completion: Date: _____ /____ /_____ Time: ___________ AM PM Number of City staff on site: __________ Number of contractor staff on site: _____________ Describe clean-up operations, including equipment used, and who performed the clean-up:
_____________________________________________________________________________________ _____________________________________________________________________________________
CAUSE OF SPILL
Spill Cause: _____ Roots _____ Vandalism
_____ Grease _____ Lift Station Fail
_____ Debris _____ Other __________________________________________________ Spill cause to be determined by CCTV inspection
Notes: _______________________________________________________________________________ _____________________________________________________________________________________ Final Cause Determination: ______________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ Revised 2/3/25
SSO INCIDENT RESPONSE FORM Page 6 of 6
PHOTOS AND DOCUMENTATION
Note location of photos taken: _____________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Other Documentation (videos or other evidence): ______________________________________________ _____________________________________________________________________________________
CERTIFICATION
Submit this completed form to the Regulatory Compliance Division. Please update Regulatory Division staff of any of the above information has changed or additional information is obtained.
This form has been completed to the best of my ability using all available information.
Name: _________________________________________ Date: _____ /____ /_____ Title: ___________________________________________
Cell phone: ______________________________________
Signature: ___________________________________________
WATER QUALITY SAMPLING
*For Spills 50,000 gallons or greater.
Were water samples collected? YES NO
Describe what and where samples were collected:
___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________
APPENDIX F
SSO REPORTING FORM
P age 1 | 7
SSO REPORTING FORM
Revised 11-18-24
Please complete all questions and return to Regulatory Compliance Division staff within 24 hours of an SSO.
1. Spill location name/address: ________________________________________________ a. GPS Coordinates of the spill, include multiple spill appearance points. Include Manhole Number (MH#), if applicable:
GPS Coordinates: _____________________, __________________________ MH# ___________ GPS Coordinates: _____________________, __________________________ MH# ___________ GPS Coordinates: _____________________, __________________________ MH# ___________ GPS Coordinates: _____________________, __________________________ MH# ___________ b. Photographs of the spill origin point, final spill destination, cleanup location, and discharge points into surface waters:
□ Extent of spill spread and spill boundaries, include GPS coordinates:
o EX. How far did spill extend? Approx. Length, Width, Area of spill:
□ GPS Coordinates: _____________________, __________________________ □ GPS Coordinates: _____________________, __________________________ □ GPS Coordinates: _____________________, __________________________ □ GPS Coordinates: _____________________, __________________________ o Describe extent of spill spread and spill boundaries. ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ □ Drainage conveyance system entry locations (if applicable; EX. Storm drain entry points) □ Locations of clean up
□ Locations of discharge points into surface waters (if applicable; EX. Storm drain outlets into surface waters) c. Description of the impact of the spill:
____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
2. Estimate spill volumes for each location (total spill volume will be a+c+e+g+i). Do not include wash water in volume estimation.
Estimated spill flow ___________gallons per minute. Total volume of spill ___________gallons. a. Explain how the spill volume estimations were calculated (include at a minimum- methods, assumptions, and type of data relied upon such as SCADA records, flow monitoring, used to estimate volume of spill and the volume recovered) ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ b. Estimate volume to reach storm drain ___________gallons. c. Estimate volume recovered from storm drain _________gallons. d. Estimate volume that reached a drainage channel that flows to a surface water body ______________gallons. (Do not include volume that reached storm drain)
P age 2 | 7
SSO REPORTING FORM
Revised 11-18-24
e. Estimate volume recovered from drainage channel that flows to a surface water body ______________gallons. f. Estimate volume that discharged directly to a surface water body ________gallons. g. Estimate volume recovered from surface water body _____________gallon h. Estimate volume discharged to land (EX. soil, grass, curb, street, etc.) _________ gallons. i. Estimate volume recovered from land ______________gallons. (This includes discharges directly to land or a retention structure, field, or non-surface water location). j. Estimate volume to reach groundwater infiltration basin ___________gallons. k. Estimate volume recovered from groundwater infiltration basin _________gallons. l. Spill located within 1,000 feet of a municipal surface water intake? ______Yes ______No
3. Did the spill reach a storm drain? ____Yes ______No
a. Does the storm drain flow to a surface water body or drainage channel? _____Yes ______No b. Was all of the wastewater fully captured from the storm drain and returned to the sewer? ______Yes ______No c. Did the spill reach a drainage channel or surface water body? ______Yes _____No If Yes to 3.c.:
d. Description of the drainage conveyance system transporting the spill (EX. Describe the storm drain, channel, and surface water affected by the spill)
____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
e. Estimated spill volume fully recovered from the drainage conveyance system: ______________gallons. f. Estimated spill volume remaining within the drainage conveyance system: ______________gallons. g. Photographs of the drainage conveyance system entry location(s) collected? ______Yes ______No h. Description and photographs of all discharge point(s) into the surface water (EX. Describe and provide photos for all points spill exited storm drain/ outlets):
____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
4. Number of appearance points (EX. The number of points the spill exited the system): ____________________
5. Spill appearance point. Check all that apply.
□ Backflow prevention device,
□ Combined sewer D.I.,
□ Force main,
□ Gravity mainline,
□ Inside building or structure,
□ Lateral clean out private,
□ Lateral clean out public,
□ Lower later private,
□ Lower lateral public,
□ Manhole,
□ Other sewer system structure,
□ Pump station,
□ Upper later private,
□ Upper lateral public,
□ Other
6. Spill appearance point explanation (EX. Explain location of where spill exited the system include street address, manholes, etc. Required if spill appearance point is other or multiple appearance points are selected.) ____________________________________________________________________________________________ P age 3 | 7
SSO REPORTING FORM
Revised 11-18-24
____________________________________________________________________________________________ ____________________________________________________________________________________________
7. Final spill destination. Check all that apply.
□ Building or structure,
□ Drainage channel,
□ Paved surface,
□ Storm drain,
□ Street/curb and gutter,
□ Surface water,
□ Unpaved surface
□ Other
8. Explanation of final destination (EX. Describe the final location of spill). ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
9. Estimated spill start date____________________ start time __________________ a. Description the methods, assumptions, and type of data relied upon for estimations of the Spill Start Time:
____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
10. Date_____________ and time___________ sewer agency was notified or discovered the spill
11. Estimated operator arrival date_______________ and arrival time __________________
12. Estimated spill end date_______________ and end time (time line was unblocked) _________________ a. Description the methods, assumptions, and type of data relied upon for estimations of the Spill End Time:
____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
13. Spill cause. Check all that apply.
□ Air relief valve/blow-off valve
failure,
□ Construction diversion failure,
□ Maintenance caused spill/ damage,
□ Damage by other not related,
□ Debris from construction,
□ Debris from lateral,
□ Debris general,
□ Debris-rags,
□ Flow exceeded capacity,
□ Grease deposition,
□ Inappropriate discharge to cs,
□ Natural disaster,
□ Non-dispersables,
□ Operator error,
□ Pipe structural problem failure,
□ Pipe structural problem failureinstallation,
□ Pipe structural problem failurecontrols,
□ Pipe structural problem
failure-mechanical,
□ Pipe structural problem
failure-power,
□ Rainfall exceeded design,
□ Root intrusion,
□ Siphon failure,
□ Vandalism,
□ Other
14. Spill cause explanation_____________________________________________________________ (required only if spill cause is other or not related)
P age 4 | 7
SSO REPORTING FORM
Revised 11-18-24
15. Where did the failure occur? Check all that apply.
□ Air relief valve/blow-off valve,
□ Force main,
□ Gravity mainline,
□ Lower lateral (public/private),
□ Manhole,
□ Pump station failure - controls,
□ Pump station-mechanical,
□ Pump station-power,
□ Siphon,
□ Upper lateral (public/private),
□ Other
16. Explanation of where failure occurred__________________________________________________ (required only if where failure occurred is other).
17. Was the spill associated with a storm event? _______Yes _________No
18. Diameter of the sewer pipe at the point of blockage or failure ________________inches.
19. Material of sewer pipe at the point of blockage or failure __________________________________
20. Estimated age of sewer pipe at the point of blockage or failure _____________________________
21. Spill response activities. Check all that apply.
□ Cleaned-up,
□ Mitigated effects of spill,
□ Contained all or portion of spill,
□ Restored flow,
□ Returned all spill to sanitary
sewer system,
□ Returned portion of spill to
sanitary sewer system,
□ Property owner notified,
□ Enforcement agency notified,
□ Other
22. Explanation of spill response activities, including description of immediate spill containment and cleanup efforts:
___________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
23. Spill response completion date ____________and time_____________
24. Spill corrective action taken. Check all that apply. □ Added sewer to preventative
maintenance program,
□ Adjusted schedule/method of
prevention maintenance,
□ Enforcement action against FOG
source,
□ Inspected sewer using CCTV to
determine cause,
□ Plan rehabilitation or replacement
of sewer,
□ Repaired facilities or replaced
defect,
□ Other
25.Explanation of spill corrective action taken:
____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ a. Description of implemented system modifications and Operation/Maintenance modifications needed to prevent repeated spills at this location:
____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ P age 5 | 7
SSO REPORTING FORM
Revised 11-18-24
b. Adjusted schedule/method of preventative maintenance ___________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ c. Planned rehab or replacement of defective asset ________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ d. Capital improvements _____________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ e. Documentation verifying immediately implemented system modifications and Operation/Maintenance modifications:
____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
26. Is there an ongoing investigation? ______Yes ______No a. Description of investigation____________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ b. Investigation findings_________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
27. Explain how the spill volume estimations were calculated (include at a minimum- methods, assumptions, and type of data relied upon such as SCADA records, flow monitoring, used to estimate volume of spill and the volume recovered) ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
Complete questions below for all Category 1 Spills, otherwise skip to question 39. **Category 1 – Spills that reach or threaten to reach a surface water. □ Notify: CalOES, (800) 852-7550, within 2 hours of knowledge of spill 1,000 gallons or greater discharging/threatening to discharge to surface waters. □ Sample: Conduct water sampling within 18 hours of initial knowledge of spill 50,000 gallons or greater.
Sample for ammonia and bacterial indicator.
P age 6 | 7
SSO REPORTING FORM
Revised 11-18-24
29. Visual inspection results from impacted receiving water:
____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
30. Health warning signs posted? _______Yes _____No
31. Name of impacted surface waters: _______________________________________________________________ Type of impacted surface waters: ________________________________________________________________ Description of:
a. Observed impacts on aquatic life: ____________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ b. Public closure, restricted public access, temporary restricted use, and/or posted health warnings due to spill? _______________________________________________________________________________________ c. Responsible entity for closing/restricting use of water body: ___________________________________ d. Number of days closed/restricted as a result of the spill _______
32. Water quality samples analyzed for – Check all that apply. □ Dissolved oxygen,
□ Other chemical indicator(s),
□ Biological indicator(s),
□ No water quality samples taken,
□ Not applicable to this spill,
□ Other
33. Explanation of water quality samples analyzed for____________________________________________ (required only if water quality samples analyzed for is other).
34. Water quality sample results reported to – Check all that apply. □ County health agency,
□ Regional Board,
□ No water quality samples taken,
□ Not applicable to this spill,
□ Other
35.Explanation of water quality results reported to_______________________________________________ (required only if water quality samples reported to is other).
Notification Details
36. Cal OES control number_____________________________
37. Cal OES called by (name)____________________________date______________time_____________
38. Others notified (name)_______________________________date______________time_____________
39. Contact number of person who can answer specific questions about this SSO:
Name_________________________________
Title_________________________ Phone Number___________________________
40. Were photos taken documenting the spill and clean-up? _______Yes _______No
41. If yes, please indicate where these photos can be located_______________________________________ P age 7 | 7
SSO REPORTING FORM
Revised 11-18-24
42. Please note any additional comments here: __________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________
43. This form was completed by:
Name: __________________________________________________________________________________ Title: ___________________________________________________________________________________ Date: ____________ Phone Number: _________________________________________________________ P age 1 | 1
SSO Post-Spill Assessment
Revised 11-18-24
Please complete all questions and return to Regulatory Compliance Division staff within 3 days of an SSO.
Date of Assessment:
SSO Location:
1. Describe SSO
2. Describe notification, response, containment, and clean-up activities.
3. What worked?
4. What can be improved?
5. Any recommendations to improve the SSO Emergency Response Plan?
APPENDIX G
INITIAL SPILL NOTIFICATION
PROCEDURE
Receive Notification of
Sewage Spill/Line Blockage
On Call First Responder
(951) 830-2391
• Contact Customer reporting the problem
• On the Incident Response Form, record
date and time, caller’s name, address of
problem, and call back number
• Contact Second Responder on Duty
AFTER HOURS
Police Dispatch forward calls
to an on call responder
Is the sewer spill the
result of the City’s sewer
system failure or flow
condition?
DURING BUSINESS
HOURS
Record time, date, caller’s name,
address of the problem, and call back
number on the Incident Response
Form.
Forward Request to First
Responder
*If no response call
David Ortiz 951-992-8633
Or
Maintenance Manager
• Provide customer with contact
info for the responsible agency
• Contact the responsible agency
Is the Sewer Spill in
the service area?
INITIAL SPILL NOTIFICATION PROCEDURE
02/23/2025
If the cause is from a
privately owned lateral,
this is a Private Spill.
Follow the SOP for
Responding to Private
Sewer Spills
NO
First and/or Second
Responders will be
dispatched to the
scene and will
follow the SSO
Response SOP
YES
YES NO
APPENDIX H
SSO RESPONSE SOP
Revised 02/03/2025
Assess The Situation At The Scene
1. If a surcharging manhole is found skip to Surcharging Manhole below.
2. If there is no noticeable discharge from a manhole, the person should visually inspect upstream and downstream manholes of the reported incident area.
3. If these manholes are flowing freely with no noticeable obstruction in the movement of the water, the sewer lines are most likely open.
4. Report to the person making the complaint that the City lines are clear, and that the blockage may be in the customer’s lateral which the City of Corona is not responsible for.
5. Report your findings to the City department making the service request and second responder.
Surcharging Manhole Or Line Blockage
1. Make every effort to minimize and contain the spill.
2. If needed contact one of the on-call personnel for the Camel/Vactor truck to assist pumping.
Innerline Engineering 909-260-2322
Houston Harris 909-721-1043
3. If needed, use portable pumps to by-pass the overflowing manhole to the free flowing manhole (pumps are located at Corporation Yard).
If A Home Or Business Is Being Flooded By A Sewer Line Blockage a) Remove clean-out cover lateral to help relieve flooding. b) Contact one of the following companies to commence clean-up of the affected property.
Servpro 714-655-9130
c) Take pictures of the spill along with any mitigation efforts that are occurring and make notes in the SSO Incident Response Form regarding details (i.e. names, times, addresses, etc.) of the incident.
d) Remain at the scene until the blockage is clear and the clean-up operations are complete.
e) Estimate spill volume and the location of where the spill water drained to (i.e. gutter, empty field, storm drain, etc.)
SSO RESPONSE SOP Page 1 of 2
Revised 02/03/2025
4. Minimize the spill area by containing flow with soil dikes, sandbags or other materials.
5. Prevent spillage into storm drain, block off storm drain (if possible) and pump back into sewer system.
6. Secure affected area from foot traffic whenever possible.
7. Estimate the volume of the spill.
8. Report the spill according to the SSO Notification Procedure.
9. Take pictures of the spill along with any mitigation efforts that are occurring and make notes in the SSO Incident Response Form regarding details (i.e. names, times, addresses, etc.) of the incident.
10. In areas of public access only, apply disinfectant to areas wet from sewage using Hudson Sprayer. Disinfection is in stock and available at the City Warehouse (STORES).
11. Cleanup any solids or contaminated soil and transport it to the Water Reclamation Facility No. 1 containment area. Here it can dry-out and get hauled to the County landfill.
12. Use the SSO Incident Response Form to complete the SSO Reporting Form and return to the Regulatory Compliance Division.
APPENDIX I
SOP FOR RESPONDING TO PRIVATE
SEWER SPILLS
Revised 02/03/25
SOP FOR RESPONDING TO PRIVATE SEWER SPILLS Page 1 of 1
DURING WORK HOURS
Immediately call the Regulatory Compliance
Division to report the spill (951) 279-3688
Immediately call the Second Responder
on duty
Regulatory Compliance Division will make
the following notifications according to the
spill Category
If <1,000 gallons
Notify by phone
1. California Warning Center/Office of Emergency Services and obtain a notification control number 1-800-852-7550
2. Regional Water Quality Control Board (951) 782-4130
3. Aftab Hussain (951) 741-7626
Second Responder will make the following
notifications according to the spill Category AND
notify the Regulatory Compliance Division by the
next business day
PRIVATE SPILL – A sewer spill or line blockage resulting from a failure or flow condition within a privately owned sewer later or other private sewer asset.
Assess the Situation at the Scene
1. Check manhole upstream and downstream
2. Determine if the cause is from Corona’s sewer system
3. Immediately notify property owner
4. Contain spill at property and clean any spill that has left private property and entered the public right of way
5. If necessary, assist property owner in contacting plumber to resolve the problem
6. Estimate the volume of the spill
7. Report the spill according to the Private SSO Notification Procedure below
8. Use closed-circuit television (CCTV) if needed
9. Use the SSO Incident Response Form to complete the SSO Reporting Form and return to the Regulatory Compliance Division.
PRIVATE SSO NOTIFICATION PROCEDURE
PRIVATE SPILL SSO OF ANY VOLUME
AFTER WORK HOURS
Private SSO If >1,000 gallons
No notification required,
submit forms to
Regulatory Compliance
Division by the next
business day.
P age 1 | 3
PRIVATE SPILLS - SSO REPORTING FORM
Revised 11-18-24
Please complete all questions and return to Regulatory Compliance Division staff within 24 hours of an SSO.
1. If known, name of the Private System or Lateral Owner/Operator:
________________________________________________________________________________________________
2. Date __________ and time __________ the Enrollee was notified of, or self-discovered, the Spill.
3. Spill location name:
________________________________________________________________________________________________ Estimated spill flow ___________gallons per minute X Estimated spill duration___________minutes = Total estimated volume of spill ___________gallons.
4. Estimated spill volume: __________ gallons
5. Was the spill from:
□ Private System
□ Private Lateral
6. Description of the system location where the spill originated and GPS coordinates:
________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ GPS Coordinates: _____________________, __________________________ GPS Coordinates: _____________________, __________________________
7. Spill destination:
□ Building/structure
□ Drainage Conveyance
System
□ Drainage Conveyance
System that discharges to a
surface water
□ Groundwater infiltration
basin or facility
□ Other (specify below)
□ Paved surface
□ Street/curb, gutter
□ Surface Water
□ Unpaved Surface
7a. If Other, describe:
________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ P age 2 | 3
PRIVATE SPILLS - SSO REPORTING FORM
Revised 11-18-24
7b. Description of spill event destination(s), including GPS coordinates if available, that represent the full spread and reach of the spill:
GPS Coordinates: _____________________, __________________________ GPS Coordinates: _____________________, __________________________ GPS Coordinates: _____________________, __________________________ GPS Coordinates: _____________________, __________________________
8. Estimated spill start date __________ estimated spill start time __________
9. Estimated spill end date __________ estimated spill end time __________
10. Spill Cause. Check all that apply.
□ Air relief valve/blow-off valve
failure,
□ Construction diversion failure,
□ Maintenance caused spill/ damage,
□ Damage by other not related,
□ Debris from construction,
□ Debris from lateral,
□ Debris general,
□ Debris-rags,
□ Flow exceeded capacity,
□ Grease deposition,
□ Inappropriate discharge to cs,
□ Natural disaster,
□ Non-dispersables,
□ Operator error,
□ Pipe structural problem failure,
□ Pipe structural problem failureinstallation,
□ Pipe structural problem failurecontrols,
□ Pipe structural problem
failure-mechanical,
□ Pipe structural problem
failure-power,
□ Rainfall exceeded design,
□ Root intrusion,
□ Siphon failure,
□ Vandalism,
□ Other
10a. Spill cause explanation (required only if spill cause is Other). If Other, describe:
________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________
11. Where did the failure occur? Check all that apply.
□ Air relief valve/blow-off valve,
□ Force main,
□ Gravity mainline,
□ Lower lateral (public/private),
□ Manhole,
□ Pump station failure - controls,
□ Pump station-mechanical,
□ Pump station-power,
□ Siphon,
□ Upper lateral (public/private),
□ Other
11a. Explanation of where failure occurred:
________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________
12. Material of sewer pipe at the point of blockage or spill cause: __________________________________
13. Diameter of sewer pipe at the point of blockage or spill cause: __________________________________ 13a. Estimated age of sewer pipe at the point of blockage or spill cause: __________________________________ P age 3 | 3
PRIVATE SPILLS - SSO REPORTING FORM
Revised 11-18-24
14. Spill response activities. Check all that apply.
□ Cleaned-up,
□ Mitigated effects of spill,
□ Contained all or portion of spill,
□ Restored flow,
□ Returned all spill to sanitary
sewer system,
□ Returned portion of spill to
sanitary sewer system,
□ Property owner notified,
□ Enforcement agency notified,
□ Other
14a. Explanation of spill response activities, including description of immediate spill containment and cleanup efforts:
___________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________
15. Spill response completion date ____________and time_____________
16. Contact number of person who can answer specific questions about this SSO:
Name_________________________________
Title_________________________ Phone Number___________________________
17. Were photos taken documenting the spill and clean-up? _______Yes _______No
18. If yes, please indicate where these photos can be located_______________________________________
19. Please note any additional comments here: __________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________
20. This form was completed by:
Name: __________________________________________________________________________________ Title: ___________________________________________________________________________________ Date: ____________ Phone Number: _________________________________________________________
APPENDIX J
LIFT STATION INFORMATION TABLE
Lift Station Address
Diameter
(ft) Depth (ft)
Operating
Height to
Inlet (ft)
Operating
Height to Overflow
(ft)
Diameter of
Inlet
Distance to
Nearest
Manhole (ft)
Average
Flow
(gpm)
Peak
Flow
(gpm)
Estimated Fill
Time to Inlet
Ave. Flow (hrs)
Estimated Fill
Time to Overflow
Avg. Flow (hrs)
Estimated Fill
Time to Inlet
Peak Flow (hrs)
Estimated Fill
Time to
Overflow Peak
Flow (hrs)
1 Ahmanson Lift Station 11763 Chadwick Rd. 5 20 3.3 17.8 8 17' 8.8 24 0.9 4.9 0.3 1.82 Airport Lift Station 1973 Aviation Dr. 5 17 5.7 14 8 215' 3.5 10 4.0 9.8 1.4 3.43 Arantine Hills Lift Station 2590 Bedford Canyon Rd. 6x35.5 20 10.25 12.5 15 9' 337 453 2 13.4 1.5 104 Artisan Apartments Lift Station 211 W Rincon St. 6 21 19.8 25.6 8 68' 30 73 2.3 3.0 1 1.25 Green River Lift Station 4776 Golden Ridge Dr. 8 24 7.4 22.2 12 51' 175 368 0.3 0.8 0.1 0.46 Griffin Lift Station Griffin Way near Berkley Cir. 5 23 5 22 8 15' 11 29 1.1 5.0 0.4 1.97 Joy and Parkridge Lift Station Joy St. & Parkridge Ave. 5.5 x 12 20 6.4 16.8 8 23' 96 212 0.5 1.4 0.2 0.78 North Main Lift Station 786 N Main St. 5 17 5 14.8 8 315' 5.5 15 2.2 6.6 0.8 2.49 McKinley Lift Station 113 McKinley St. 6 21 3.6 15.8 8 191' 33 80 0.4 1.7 0.2 0.7 10 Prado Lift Station 4204 Prado Rd. 5 13 4 14 8 10' 3.8 11 2.6 8.9 0.9 3.111 Sierra Del Oro Lift Station 3915 Green River Rd. 8 32 9 28 10 44' 364 722 0.2 0.5 0.1 0.212 Smith and Rincon Lift Station 1505 Rincon St. 8 30 15.8 27.3 12 149' 421 826 0.2 0.4 0.1 0.213 Stagecoach Lift Station 2220 Stagecoach Dr. 4 18 5.1 16.3 8 26' 29 71 0.3 0.9 0.1 0.414 Bedford Lift Station 3695 Bedford Canyon 5 8 4.4 5.92 4 16' 0 0 n/a n/a n/a n/a15 Sunkist Lift Station 650 E Harrison St. 13 x 16.6 35.5 8 24.4 18 13' 1659 2456 0.32 1 0.2 0.716 WRF 3 Lift Station 3997 Temescal Canyon Rd Rev 03/02/2023
Lift Stations
Utilities Department
City of Corona
APPENDIX K
THE FOUR C’S OF A SEWAGE
OVERFLOW
02/2014
THE FOUR C'S OF A SEWAGE OVERFLOW
CONTAINMENT – CONTROL – CALL – CLEANUP
FIRST THINGS FIRST:
1. ASSESS THE SPILL
2. NOTIFY MANAGER
3. LOCATE STORM DRAINS THAT COULD BE AFFECTED
4. MOBILIZE RESOURCES TO CONTAIN AND CONTROL THE
OVERFLOW
5. CONTAIN BEFORE CONTROL
6. NOTIFY THE APPROPRIATE AGENCIES
CONTAINMENT:
Containment is the most important aspect of responding to a sewer overflow.
Use the entire inventory available to you to contain the spill. Keep it from entering the waterways, and remember that storm drains are considered to be waterways. Always block off and/or cover the storm drains that are receiving water from an overflow.
A. Sewage Spill Containment: Goal is to keep the sewage where it can be recovered and returned to the sewer.
B. Containment Opportunities or Making the Best of a Bad Situation: On streets, in flood control facilities, excavations, vacant lots, etc.
C. Containment Materials: Dirt, sand, sand bags, poly sheeting. 02/2014
CONTROL:
Once the flow has been contained, work on relieving the spill by trying to stop the overflow, don’t just wait. Plug the pick holes and park the truck on the manhole cover to force the water back up the line. Set up a pump and divert the flow to the next manhole.
A. Sewage Spill Control : Use of bypasses
CLEAN UP:
Clean up the affected areas:
A. Remove debris
B. Wash downs could be creating a larger problem somewhere else in the system.
C. Clean up hard surfaces: What you put down must come back up, use power sweepers and sewer vacuum rigs. Beware of aerosols.
D. Clean up soft surfaces: Decide when to leave it alone, disk it if you can, control public access, remove soil if necessary.
E. Disinfect: Consider requirements of other agencies, consider beneficial use of receiving waters, and consider the uses and ownership of an affected area.
F. Spills on Private Property: Check it out, as their problem could be our problem.
CALL:
You must call all the necessary agencies as soon as possible.
CONTAINMENT BEFORE CONTROL - KEEP THE OVERFLOW
OUT OF THE DRAIN
OUR MISSION IS TO KEEP THE SANITARY SEWER
OVERFLOW OUT OF THE STORM DRAIN
02/2014
SEWER OVERFLOW RATES
A one-inch opening with a water height of two inches will discharge 7 gallons per minute or 419 gallons per hour. Two two-inch holes will discharge 14 GPM or 839 GPH.
Overflow rates for a one inch opening:
½" = 3.5 GPM or 210 GPH
3/4" = 4.5 GPM or 257 GPH
1" = 5.0 GPM or 297 GPH
1 1/4" = 5.5 GPM or 332 GPH
1 ½" = 6.0 GPM or 363 GPH
1 3/4" = 6.5 GPM or 392 GPH
2" = 7.0 GPM or 419 GPH
2 1/4" = 7.4 GPM or 445 GPH
2 ½" = 7.8 GPM or 469 GPH
2 3/4" = 8.2 GPM or 492 GPH
3" = 8.6 GPM or 514 GPH
Use this formula for flow heights not on sheet
VERTICAL PIPE DISCHARGE
The following formula is an approximation of the output of a vertical pipe.
GPM = H x K x D2x 5.68
GPM = Gallon per minute
H = Height in inches
D = Diameter of pipe in inches
K = Constant from 0.87 to 0.97 for diameters of 2 to 6
inches and heights (H) up to 24 inches
D
Pipe
Water Flow H
APPENDIX L
SSO WATER QUALITY MONITORING
SOP
Sampling Supplies · Chain of Custody · Bacti bottles (100 ml with Na2S2O3) · Ammonia bottles (250 ml with H2SO4) · Ice chest with bagged ice · Sharpie marker · Pen An SSO event in which 50,000 gallons or greater reach surface waters, requires water quality samples to be collected within 18 hours. Follow procedures below unless directed otherwise by Regional Board or other regulatory agency.
1. Coordinate laboratory sample pick-up
Regulatory Compliance Division
(951) 279-3688
Contact Laboratory Directly
(626)386-1106
2. Gather sampling supplies
before heading to site
Pick-up ice chest
with supplies Bag ice
3. Determine the point where the spill entered the
waterway
Take a photo and record
observations in a notebook
4. If spill enters...
Move 25' upstream from 1st sample
and collect 2nd sample according to
previous instructions
Move upstream to where spill entered
surface water and collect 3rd sample
according to previous instructions
Move 25' upstream of entry point and
collect 4th sample according to previous
instructions
Repeat daily until
authorized by regulatory
agency
· Drainage Conveyance System, DCS-001: Collect all samples A point in a drainage conveyance system before the drainage conveyance system flow discharges into a receiving water. And/or... · Receiving Water:
o RSW-001: A point in the receiving water where sewage initially enters the receiving water. o RSW-001U: Upstream of Point of Discharge- A point in the receiving water, upstream of the point of sewage discharge, to capture ambient conditions absent of sewage discharge impacts. o RSW-001D: Downstream of Point of Discharge- A point in the receiving water, downstream of the point of sewage discharge, where the spill material is fully mixed with the receiving water.
Bacti Sample a) Fill out COC and bottle label with location, date and time b) Put on gloves
c) Using unpreserved 500 ml bottle, hold bottle in one hand, face upstream and lower the bottle below the water surface, then sweep the bottle upstream and out of the water. d) Be careful not to disturb bottom sediment e) Use this bottle to fill the bacti bottle
f) Remove seal from bacti bottle
g) Remove cap and do not allow inside of cap to touch anything (do not rinse out preservative) f) Pour sample from unpreserved bottle into the bacti bottle, fill to the 100 ml line without overflowing the bottle h) If the bottle overflows, discard the bottle and start over with a clean bottle Ammonia Sample
a) Fill out COC and bottle label with location, date and time b) Using 250 ml with H2SO4, hold bottle in one hand, face upstream and lower the bottle below the water surface, then sweep the bottle upstream and out of the water.
c) Be careful not to disturb bottom sediment
d) Use this bottle to fill the ammonia bottle
e) Remove cap and do not allow inside of cap to touch anything (do not rinse out preservative) f) Pour sample from unpreserved bottle into the ammonia bottle without overflowing the bottle g) If the bottle overflows, discard the bottle and start over with a clean bottle h) Fill to just below the neck of the bottle
5. Place samples in
cooler with ice
Make a copy of the chain of custody and
place original COC with samples for pick-up
Provide a copy of the COC to the
Regulatory Compliance Division
Provide copies of notebook and photos
to the Regulatory Compliance Division
During work hours
After hours
· Gloves · Camera · Notebook
SSO WATER QUALITY MONITORING SOP Page 1 of 1
02/03/2025
Drop coolers off WRF No. 1 Lab. Samples can also be placed in the WRF No. 1 sample fridge.
Client:
FAX No.
Eurofins Eaton Analytical
Phone: (626) 386-1100
Fax: (626) 386-1101
City of Corona
951-735-3786
Project Name: SSO Dischan�e
Project Location:
Sampler Information
Name:
Employer: Ci� of Corona
Signature:
Sample ID Date
DCS-001:
RSW-001:
RSW-001U:
RSW-001D:
Time
Chain of Custody & Sample Information Record
Contact: Mauro Casas Phone No. 951-739-4817
[email protected] Additional Reporting Requests
Email: Include QC Data Package: □ Yes □ No
FAX Results: D Yes D No
Turn Around Time: Routine *3-5 Day *48 Hour *24 Hour Email Results: □ Yes □ No Rush Rush Rush State EDT: □ Yes □ No
*Lab TAT Approval: By: *Addltional Charges May Apply (Include Source Number in Notes) # of Containers Sample
& Preservatives Type Analvsis Reauested Matrix Notes
::I l!? Ill *FOR SPILLS 50,000 GAL OR GREATER
0 Cl) ftl DW = Drinking Water Sample within 18 hrs of knowledge of spill 5 C ftl
·; ·;:: ·;::
E Cl) s WW = Wastewater DCS-001 POINT IN DRAINAGE SYSTEM ,, - ti CJ BEFORE DISCHARGING TO ::I Cl) C ftl ftl
=c Cl) � Cl) 0 .Q m GW = Groundwater RECEIVING WATER
0 N Cl) J!I 0 E E
Ill Ill ::c Ill Cl) 0 ... ::I S=Soil OR
� � I!! CJ ..!!! ,E g
CJ ... ... Cl. � I CJ -RECEIVING WATER WHERE "i "i C .., C :st: QI - 0 0 0 ftl SG=Sludge RSW-001 0 � -!!! "i: SEWAGE ENTERS RECEIVING WATER ::I !:::! (J (J CJ ..J ..J N i3 � ni u ·- 0 0 -RECEIVING WATER UPSTREAM OF E E ..J .., Cl) ::c ::c ::, QI ]i iii - ... E L= Liquid RSW-001U E 0 0 0 .... - 0 s SEWER DISCHARGE RECEIVING Cl Cl N (J 0 � � CJ Cl E WATER U) Cl z ftl ftl ftl ::c 0 Cl) '-,! C
.... N .... ::c z z z z ::& I- I- IL w w � M = Miscellaneous RSW-001D -DOWNSTREAM OF DISCHARGE 4 1 5 X X X WW
4 1 5 X X X WW
4 1 5 X X X WW
4 1 5 X X X WW
Relinquished By (sign) Print Name / Company Date/Time Received By (Sign) Print Name / Company (For Lab Use Only) Sample Integrity Upon Receipt
Sample(s) Submitted on Ice? Yes No
Custody Seal(s) Intact? Yes No
Sample{s) Intact? Yes No
Temperature
N/A oc
D Cooler Blank
Lab Notes
Lab No.
Page of
X
X
X
X
X
X
X
X
X
X
X
X
APPENDIX M
FOG BILL INSERT
¡Mantenga sus drenajes libres de grasas!
Grasas y Aceites
¿Qué es Grasas y Aceites?
Grasas y Aceites son ar�culos que
usamos frecuentemente
cuando cocinamos, o son
productos que resultan de
cocinar, tales como aceite,
mantequilla o la grasa que
sobra al cocinar tocino u
otras carnes.
¿Cómo debo desechar las Grasas y Aceites?
Después de cocinar espere que las Grasas y Aceites se
enfríen. Luego, simplemente raspe las grasas de
cocinar sobrantes a la basura u otro recipiente, tal
como una lata vieja metálica de café o un recipiente
para reciclar restos de comida. Nunca eche las grasas
y aceites por el desagüe.
¿No puedo simplemente verter las Grasas y
Aceites por el desagüe?
Nunca �re las grasas y aceites por el desagüe, aún si
u�liza agua caliente. Estos materiales se acumularán
a lo largo del �empo y taparán los drenajes de las
alcantarillas. Los drenajes tapados pueden hacer que
se devuelvan las aguas negras hacia su casa, y podrían
resultar en costosas facturas por reparaciones. Las
aguas negras también pueden salir a las calles y caer
a los drenajes pluviales, los cuales drenan hacia los
ríos y el océano. Los derrames de aguas negras
pueden representar riesgos a la salud y al medio
ambiente. Ademas, son costosos para limpiar y
reparar.
BUTTER
Recuerde – ¡Mantenga sus alcantarillas
libres de Grasas y Aceites!
Departamento de Utilities de Corona
“Protegiendo la Salud Publica”
www.CoronaCA.gov
951.736.2234
FOG
BUTTER
Fats, Oils and
Grease
Keep Your Drains “FOG” Free!
What is “FOG?”
“FOG” stands for Fats, Oils, and
Grease. These are items that we
frequently use when we cook,
or are the by-products of
cooking, such as cooking oil,
bu�er or le�over grease from
cooking bacon or other meats.
How Should I Dispose of “FOG?”
A�er cooking, wait for the “FOG” to cool down. Then,
simply scrape the le�over cooking fats into the trash
or other container, such as an old metal coffee can or
food scrap recycling bin. Never put fats, oils, or grease down the drain.
Can’t I Just Wash “FOG” Down the Drain?
Never wash fats, oils or grease down the drain, even if you use hot water. These items will build up over �me
and block sewer lines. Blocked sewer lines can cause
raw sewage to backup into your home, and could lead
to costly repair bills. Raw sewage could also backup
onto neighborhood streets and into storm drains,
which drain to rivers and the ocean. Overflows can
pose health and environmental hazards, in addi�on to
being costly to repair.
Remember - keep your sewer lines “FOG” - free!
City of Corona
Utilities Department
“Protecting Public Health”
www.CoronaCA.gov
951.736.2234
APPENDIX N
RESTAURANT BMP FLYER
RESTAURANT
BEST MANAGEMENT PRACTICES (BMPs)
1. Prior to washing plates, pots and pans, and cooking utensils, scrape all solid material into a proper waste receptacle and contain material so it doesn’t leak. Properly dispose material to a solid waste trash receptacle to be hauled away.
2. Install screens in all pot sinks, 2 and 3 compartment sinks, and floor sinks to catch solid materials to be properly disposed of to solid waste containers.
3. Dispose waste deep fryer grease to proper waste storage containers to be hauled away by licensed waste hauler.
4. Schedule to have grease interceptor pumped on a regular basis by a licensed waste hauler. The grease interceptor needs to be inspected regularly to determine if your pumping schedule is adequate.
5. Make sure all waste storage areas and containers (dumpsters, compactors, used oil containers) are covered and kept clean.
Note: Any disposal of wash water to outside paved surfaces and storm drain is strictly prohibited. Whenever possible, use dry cleaning methods by sweeping, damp mopping (as opposed to hosing) or absorbents.
6. Management should conduct ongoing inspections and training for employees to ensure that these BMP’s are implemented regularly.
7. The City of Corona prohibits all water softeners that are regenerated on site for all Commercial and Industrial dischargers.
City of Corona – Utilities Department
755 Public Safety Way
Corona, CA 92878
(951) 736-2234
RESTAURANTE
MEJORES PRACTICAS DE MANEJO DEL
RESTAURANTE
1. Antes del lavado de platos, de ollas, de cazuelas, y de utensilios de cocina, raspar todo el material sólido en un recipient de desecho apropiado para contener el material y no permitir que se escape for el drenaje. Deposite este material en el contenedor de basura sólida.
2. Instalar coladeras en todos los fregaderos de la cocina y áreas de drenaje en el suelo para atrapar el material sólido y desecharlo apropiadamente en la basura.
3. Depositar la grasa usada de la freidora en un recipient apropiado para almacenarla hasta que sea retirada por una persona autorizada para remover este tipo de desecho.
4. Contrate regularmente a una persona con licencia para que realize la limpieza del interceptor de grasa y la retire del restaurante. El interceptor de grasa necesita ser revisado periódicamente para determiner si el servicio de limpieza es adecuado.
5. Asegúrece que todas las áreas de almacenamiento de desecho, los contenedores, y los recipients de aceite vacios estén cubiertos y limpios.
Nota: Está prohibido tirar el agua con que se laven las superficies pavimentadas hacia la calle o hacia los drenajes de lluvia ubicados en la calle. Siempre que sea posible utilize métodos de limpieza en seco como barrer, o un trapeador humedo en lugar de usar la manguera del agua, o utilize materiales absorbentes.
6. El Supervisor o el Gerente deben conducir inspecciones regularmente y entrenar a los empleados para asegurarse que las mejores practicas de manejo del restaurante se están usando.
7. La Ciudad de Corona prohibe a los negocios industrials y comerciales poseer equipo para suavisar el agua donde el material activo es regenerado localmente.
City of Corona – Utilities Department
755 Public Safety Way
Corona, CA 92878
(951) 736-2234
APPENDIX O
AUTOMOTIVE REPAIR BMP FLYER
1. Proper Disposal of
Hazardous Waste
Recycle solvents, antifreeze,
lubricants, batteries, oil and filters,
and metal filings. Contact a licensed hazardous waste hauler to dispose of saturated absorbents.
2. Material and Waste
Handling
Properly Store your used
motor oil, coolant, and other fluids
in a special designated area where
there are no connections to a sewer or storm drain. Store all materials inside or under cover to prevent contamination from rain water.
3. Spill Response
Immediately clean up all oil,
solvent or fuel spills using absorbent cleaning materials. Follow your hazardous materials response
plan and make sure your employees are aware and capable of implementing each phase of the plan.
4. Cleaning Auto Parts
Minimize the use of solvents. Scrape parts with a wire brush or use a water-based solvent for cleaning. Arrange drip pans, drying racks, and drain
boards so that excess fluids are
directed back into the holding
tank.
5. Good Housekeeping
Maintain all service areas
using drip pans underneath vehicles. Clean up spills with rags and absorbent agents. Do not
use water and detergents to hose
down service areas to the sewer
or storm drain.
6. Metal Grinding and
Polishing
Contain all metal filings in a
bin under your grinder or lathe
to better facilitate recycling efforts. Properly dispose of cutting oils as required by your hazardous materials plan.
Auto Repair Industry
Best Management Practices
To report illegal discharge or dumping:
Call (951) 736-2234
Here are a few simple practices to reduce unwanted pollutants from entering the sewer system from local businesses such as auto repair shops, car rental garages, gas stations, and auto dealerships.
1. Manera apropiada de
eliminar materiales
peligrosos
Recicle solventes, anticongelante, lubricantes, baterias, aceite y filtros, y viruta de metal. Contacte una persona autorizada para remover los absorbentes usados.
2. Manejo de Material y
Desperdicio
Guarde apropiadamente
el aceite de motor usado, el anticongelante, y otros fluidos en un area especial donde no se tiren
hacia el drenaje o alcantarilla de
lluvia. Guarde todos los materiales bajo techo y tapados para prevenir que la lluvia los moje.
3. Responda a Derrames
Inmediatamente limpie todo
aceite, solvente, y combustible
usando materiales absorbentes.
Siga el plan de ataque para materiales peligrosos y asegurece que sus empleados saben y pueden
aplicar cada etapa del plan.
4. Limpieza de Partes de
Autos
Minimize el uso de solvents.
Limpie las partes con un cepillo
de metal o use un solvente a
base de agua. Utilice charolas,
rejillas de lavado y secado encima del recipiente para no tirar material en el suelo.
5. Buena Organizacion
Mantenga todas las areas de
servicio con recipientes para juntar el aceite. Limpie derrames con toallas absorbentes. No use
jabon ni agua de la manguera
para limpiar las areas de servicio
hacia el drenaje o hacia las alcantarillas de lluvia.
6. Moldeado y Pulido de
Metales
Contenga toda la viruta o rebaba de metal en un recipient debajo de su máquina para que
pueda reciclar este material.
Deságase del aceite usado como
es requerido por su plan de ataque sobre materiales
peligros.
Auto Repair Industry
Best Management Practices
Para reportar descargas de desechos ilegales :
Llamar al (951) 736-2234
Aqui se encuentran unas formas secillas para reducer la contaminación de sustancias indeseadas en el systema de drenaje provenientes de negocios como talleres de autos, bodega de renta de autos, estaciones de gasolina, y concesionarias de autos.
APPENDIX P
RESTAURANT QUESTIONNAIRE
NAME/ADDRESS AND CONTACT INFORMATION
City of Corona
Water Discharge Questionnaire
Restaurants/Food Service
Applicant Business Name:
Address of Premise Discharging Industrial Waste:
Mailing Address:
City: State: Zip:
Primary Contact Person/CEO:
Title:
Mailing Address:
City: State: Zip:
Phone: Emergency Phone:
City: State: Zip:
Is Premise: Owned Leased
Description of restaurant services (type of food, etc.):
Name and Address of Landlord:
BUSINESS DESCRIPTION
The Business Description is primarily used to determine the substances which may enter into the Industrial Waste discharge from the Business Activity. The production quantities are necessary for State and Federal Reports.
Type of Business
Full Service Restaurant: Single Service Restaurant: Retail Food Items:
Seating Capacity: Maximum meals served at peak hour:
Kitchen Equipment
Equipment Quantity Equipment Quantity
Dishwasher
Deep Fryer
Mop Sink
Garbage Disposal
Ice Machine
Three Compartment Sink
Two Compartment Sink
Floor Sinks
City: State: Zip:
City of Corona
Water Discharge Questionnaire
Restaurants/Food Service
Hours of Operation: From To (circle) S M T W T F S
Industrial Waste Pretreatment: Check the type of treatment, if any, given industrial waste from this building sewer before it is discharged to the community sewer.
Grease Trap: Yes No Size How Many Inside Outside
If Yes, Cleaning Schedule:
Grease Interceptor: Yes No Size /Gallons
If Yes, indicate Pumping Company and pumping schedule:
Used Oil Disposal (Deep Fryer): Yes No Indicate Hauling Company Best Management Practices (BMP’s): I understand and use BMPs at my facility -- Yes No This document must be signed by the most responsible person of the organization applying for the discharge permit. This includes the owner, president, corporate o cer, or any other representative of the organization in a decision making capacity.
This document and any attachments were prepared under my direction or supervision in accordance with a system designed to assure that quali
ed personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the informaton is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are signi
cant penalties for submitting false information, including the possibility of ne and
imprisonment for knowing violations.
I declare under penalty of perjury under the laws of the State of California that the foregoing is true and correct.
Responsible Person Date
Print Name Title
City of Corona - Utilities Department
755 Public Safety Way
Corona, CA 92878
(951) 736-2234
APPENDIX Q
FOG DOOR HANGER
Dear Utility Customer,
You received this door hanger because of a
problem observed in the sewer line downstream of your residence or business.
The Problem
_____ Fats, oil, and grease (FOG)
_____ Wipes, towelettes, rags, diapers, etc.
_____ Oily or other sediment
_____ Other: ________________________
Help solve the problem
Please read the suggested solutions on the
back of this door hanger. For more information
on keeping our sewers clear of blockage please
visit: www.CoronaCA.gov
With your cooperation the City of Corona
will experience fewer sewer backups and lower
maintenance costs, which will help keep the
sewer system operating smoothly.
In addition, you will prevent exposure to
potential health hazards, costly claims and
repairs, and unnecessary rate increases.
Para pedir una copia en español acerca de las
grasas y aceites por favor llamar al (951) 736-2234.
Wipes, towelettes, rags, diapers -
“Disposable” and “biodegradable” do
not mean permissible discharge to
the sewer. The sewer system does
not provide the right conditions to
properly break down these products.
These products need to be disposed of
in the trash.
Oily or other sediment - Typically
observed from carwash and
vehicle/equipment service type
facilities. These facilities are
required under the Corona Municipal
Code Section 13.08.150 to have and
properly maintain a gravity separation
interceptor.
Other - Section 13.08.210 of the
Corona Municipal Code prohibits
waste discharges. Discharging
unacceptable or excessive wastes
can lead to a sewer backup, lift
station failure, wastewater
treatment plant problem, and
environmental concerns.
FOG - Fats, oils, and grease are items
used when cooking. After cooking, wait
for the “FOG” to cool down then store
the item in a container such as an old
coffee can or food scrap recycling bin.
Never put fats, oil, or grease down
the drain.
The Corona Municipal Code Section 13.02.110
requires food service establishments to have,
and properly maintain, a grease removal device.
BUTTER
Questions - call (951) 736-2234
City of Corona
Utilities Department
[email protected]
APPENDIX R
SSMP CHANGE LOG
SECTION DATE CHANGE AUTHORIZED BY
Entire SSMP 2/21/2014 Revised entire SSMP Jonathan Daly
10. SSMP Program Audits 11/10/2015 Revised entire audit form to reflect regulatory requirements Jonathan Daly
1. Goals 1/22/2016 Update regulatory language and page formatting Condensed the list of goals and removed objectives
Streamlined sewer system language
2. Organization 2/22/2016 Updated regulatory language and page formatting Updated phone list and standby schedule
Updated org chart, job responsibilities, and SSO flow chart Updated job titles and duties and contact information
Added pretreatment program contractor and utility system modeler Streamlined sewer system language
3. Legal Authority 3/18/2016 Updated regulatory language and page formatting Streamlined sewer system language
Added hyperlinks for referenced documents
5. Design and Performance Provisions 4/4/2016 Updated regulatory language and page formatting Added hyperlinks for referenced documents
Added Greenbook reference
4. Operation and Maintenance Program 4/14/2016 Update regulatory language and page formatting Streamlined sewer system language
Updated hot spots list
Updated job titles and duties
Updated CIP program years
Updated number of pump stations
7. Fats, Oils, and Grease (FOG) Control
Program 7/27/2016 Updated regulatory language and page formatting Streamlined sewer system language
Added hyperlinks for referenced documents
Updated public outreach material and links
Added FOG disposal section
Removed outdated information
Added FOG program implementation
6. Overflow Emergency Response Plan 8/5/2016 Updated regulatory language and page formatting Streamlined sewer system language
Updated SOPs
Updated reporting forms
Updated lift staion table
Updated response activities
Updated notification procedures
Added monitoring and training
8. System Evaluation and Capacity
Assurance Plan 9/14/2016 Updated regulatory language and page formatting Updated number of lift stations
Removed statement for capacity for a 10 year wer weather event
9. Monitoring, Measurement, and Program
Modifications 9/16/2016 Updated regulatory language and page formatting Streamlined sewer system language
Added language on program updates
11. Communication Program 9/21/2016 Updated regulatory language and page formatting Tom Moody Updated outreach activities
10. SSMP Program Audits 10/14/2016 Updated regulatory language and page formatting Tom Moody Appendix H 5/10/2017 Updated Roto Rooter phone number Eugene Silvas Appendix B 5/10/2017 Updated 2017 standby schedule Eugene Silvas Appendix A 10/18/2017 Updated Contact List Eugene Silvas
2. Organization 10/18/2017 Updated General Manager Eugene Silvas
4. Operation and Maintenance Program 10/18/2017 Added quarterly hot spot, 5 year contract for contractors, NexGen tracking syste Eugene Silvas
4. Operation and Maintenance Program 12/21/2017 Added quarterly hot spot MH 4620-4621 Julian Rojas
2. Organization 9/5/2018 Updated org chart, job responsibilities, and SSO flow chart Tom Moody Appendix A 9/5/2018 Updated City Contacts Tom Moody
Appendix D 9/5/2018 Updated to use total spill volume Tom Moody Appendix E 9/5/2018 Updated to use total spill volume Tom Moody Appendix F 9/5/2018 Minor edits Tom Moody
Appendix G 9/5/2018 Updated contacts Tom Moody
Appendix D, F 11/1/2018 Updated Regional Board Contact Jennifer McMullin
4. Operation and Maintenance Program 12/3/2018 Added quarterly hot spot Julian Rojas
4. Operation and Maintenance Program 5/9/2019 Added monthly hot spot Eugene Silvas
2. Organization 2/4/2020 Updated City Staff Kristian Alfelor
4. Operation and Maintenance Program 2/4/2020 Updated high maintenance area cleaning Kristian Alfelor Entire SSMP 2/4/2020 Updated all hyperlinks and other minor changes Kristian Alfelor Appendices 2/4/2020 Updated to include changes in staff and programs Kristian Alfelor Appendix E 2/20/2020 Added additional volume estimation documentation Kristian Alfelor Entire SSMP 2/23/2023 Updated Dept. name from DWP to Utilities Department, updated hyperlinks Korina Rangel
2.4 & 2.6 Organization & Communication 2/23/2023 Updated organization chart, job responsibilities and titles, and SSO flow chart Korina Rangel Appendix D, I 2/23/2023 Updated LRO Contact Information Korina Rangel Entire SSMP 3/2/2023 Minor edits Korina Rangel
4.4 & 4.5 High Maintenance Area Cleaning 3/13/2023 Updated monthly and quarterly high maintenance areas Korina Rangel Appendix B 3/13/2023 Updated standby schedule Korina Rangel Appendix F 11/18/2024 Updated reporting forms Korina Rangel Sections 1-4 11/18/2024 Updated sections to meet requirements of Order Korina Rangel Sections 5-11 1/13/2025 Updated sections to meet requirements of Order Korina Rangel Tom Moody
Jonathan Daly
Jonathan Daly
Jonathan Daly
Jonathan Daly
Jonathan Daly
CITY OF CORONA UTILITIES DEPARTMENT
SSMP CHANGE LOG
Jonathan Daly
Jonathan Daly
Tom Moody
SECTION DATE CHANGE AUTHORIZED BY
CITY OF CORONA UTILITIES DEPARTMENT
SSMP CHANGE LOG
Entire SSMP 1/28/2025 Updated sections to meet requirements of Order AH, KR, PT Entire SSMP 2/4/2025 Updated sections to meet requirements of Order; Chain of Comm. & Org. Chart AH, KR, PT Appendices 2/12/2024 Various appendices updated, department name, contact information Korina Rangel Entire SSMP 2/18/2025 Updated compliance summary throughout Korina Rangel
APPENDIX S
AUDIT FORM
CITY OF CORONA
2024
SEWER SYSTEM MANAGEMENT PLAN AUDIT REPORT
WDID No.: 8SSO10565
STATEWIDE GENERAL WASTE DISCHARGE REQUIREMENTS FOR
SANITARY SEWER SYSTEMS
STATE WATER RESOURCES CONTROL BOARD
ORDER NO. 2022-0103-DWQ
1 CERTIFICATION STATEMENT
Per the State Water Resources Control Board Order No. 2022-0103-DWQ, Statewide General Waste Discharge Requirements for Sanitary Sewer Systems, the City of Corona Utilities Department is required to develop a Sewer System Management Plan (SSMP) and conduct periodic internal audits to evaluate compliance, implementation, and the effectiveness of the SSMP.
The City of Corona Utilities Department initiated an internal audit on May 2, 2024 and completed the audit on October 24, 2024. The City’s sewer system operators were presented with the Audit findings and their input has been considered.
Aftab Hussain
Maintenance Manager,
Legally Responsible Official
2 SYSTEM OVERVIEW
Table No. 1 - System Overview
Miles of gravity sewer lines
Miles of force main
Total miles of all sewer lines
Number of lift stations
Miles of private sewer lines
Population served
Current average monthly single-family
residential sewer rate
Table No. 2 - Volume of SSOs
Table No. 3 – City SSOs by Cause
Year
Total
Number
of SSOs
Number
of City
CS SSOs
Number of
Private
SSOs
Total Volume
SSOs (gallons)
Total Volume
Recovered
(gallons)
Total Volume
Not Recovered
(gallons)
% Volume
Recovered
2021
2022
2023
Avg
Causes of SSOs 2021 2022 2023 Totals
Capacity Related
Roots
FOG
Debris/Rags
Construction
Infrastructure Failure
Power Failure
Vandalism
Other
Unknown
3 PRE-AUDIT CHECKLIST
SEWER SYSTEM
MANAGEMENT PLAN YES NO Needs
Updating Comments
Has the SSMP been approved by City Council?
Are the most recent approval records included in the
SSMP?
Has the SSMP been updated within the last year?
Has an internal audit of the SSMP been conducted
within the last 3 years?
Is the SSMP publicly available?
Does the SSMP include records documenting any
changes made to the SSMP, sections updated, and who
authorized the change?
GOALS & INTRODUCTION
Does the SSMP contain goals that are appropriate and
accurate?
Does the SSMP contain an introduction that is
appropriate and accurate?
Are there additional goals that are not currently included in the SSMP?
Does the introduction include a Plan Update Schedule?
Does the introduction contain an asset overview that is accurate and up to date?
ORGANIZATION
Is the named Legally Responsible Official (LRO) up to
date?
Is there more than one LRO registered in CIWQS?
Are names, titles, contact info. and responsibilities of staff included in the SSMP?
Are organizational lines of authority included in the
Plan?
Is a chain of communication for receiving and reporting SSOs included?
Are all positions responsible for implementing the SSMP included in the organization portion of the SSMP?
LEGAL AUTHORITY
Does the SSMP contain legal authority to prevent illicit discharges into the sanitary sewer system?
Is storm water agency collaboration included in the
Plan?
Does the SSMP contain legal authority to require sewers and connections to be properly designed and
constructed?
Does the SSMP contain legal authority to ensure access
for maintenance, inspection, or repair of the laterals
owned by the City?
Does the SSMP contain legal authority to enforce any
violation of its sewer ordinances?
4 SEWER SYSTEM
MANAGEMENT PLAN YES NO Needs
Updating Comments
Does the Plan contain easement accessibility agreements for locations requiring sewer system operations and
maintenance, as applicable?
Are all links or references to legal documents up to date?
OPERATION AND MAINTENANCE
PROGRAM
Are maps of the collection system up to date and
available to staff?
Are procedures available for maintaining and providing
the SWRCB access to the maps?
Are collection system maps being updated regularly?
Is there a process for notating changes and updates to
collection system maps?
Are routine and preventative maintenance activities
described in the SSMP?
Is there a scheduling system and data collection system for preventative operation and maintenance activities by staff and contactors?
Is the system being used regularly?
Does the Plan include a schedule of inspection and
maintenance activities including known problem areas
(areas with tree root problems)?
Has a plan been developed to identify and prioritize
areas in need of rehab or replacement?
Have short term and long-term projects been identified? Is there a schedule for visual and TV inspections of the collection system?
Is there a current CIP for the collection system?
Is there a schedule for developing funds for the CIP?
Has all collection system staff completed the SSO
training through Class Web?
Does the training cover practice drills?
Does the training cover skilled estimation of spill
volume?
Are procedures for CIWQS reporting available for data
submitters?
Have any staff completed any CWEA or other related
training?
Is collection system staff familiar with and able to locate the SSMP?
Are contractors required to be appropriately trained?
Are equipment and replacement parts inventoried?
Have critical replacement parts been identified?
5 SEWER SYSTEM
MANAGEMENT PLAN YES NO
Needs
Updating Comments
DESIGN AND PERFORMANCE PROVISIONS
Does the SSMP contain design and construction
standards and specifications for construction and
installation of new sanitary sewer systems, pump
stations, and other appurtenances?
Does the SSMP contain design and construction
standards and specifications for the rehabilitation and repair of existing sanitary sewer systems?
Have the design and construction standards been updated within the last 5 years?
Does the SSMP contain procedures and standards for
inspecting and testing the installation of new sewers,
pumps, and other appurtenances and for rehabilitation
and repair projects?
Have the standards for conducting inspections been
updated within the last 5 years?
SPILL EMERGENCY RESPONSE PLAN
Does the Plan contain a Spill Emergency Response Plan
(SERP)?
Are notification procedures up to date with correct
personnel and contact information?
Are appropriate personnel and agencies in the
notification procedure identified, including notification to agencies of spills that potentially affect public health? Do notification procedures include who and when to
notify and how?
Are response procedures in the Plan appropriate to
ensure that the proper parties are notified of SSOs in a timely manner?
Does the Plan comply with the notification, monitoring, and reporting requirements of the order?
Are response procedures appropriate for different types of SSOs?
Are first responders and contractors are aware of and
appropriately trained to follow the SERP?
Does the SERP include procedures to address emergency
operations, traffic control and other response activities? Does the SERP contain adequate procedures for
containment and prevent/minimize discharge to waters
or drainage conveyance systems?
Does the SERP include procedures to minimize and
remediate public health impacts and adverse impact on
beneficial uses of waters to the State?
6 SEWER SYSTEM
MANAGEMENT PLAN YES NO
Needs
Updating Comments
Are procedures included to remove sewage from the
drainage conveyance system?
Are procedures to clean the spill area and drainage
conveyance system that does not adversely impact
beneficial uses?
Does the SERP include procedures to implement
technologies, practices, equipment, and interagency
coordination to expediate spill containment and
recovery?
Does the SERP include implemented pre-planned
coordination//collaboration with storm drain agencies
and other utility agencies/departments prior, during, ad after a spill event?
Are procedures to conduct post-spill assessments of spill response activities included in the SERP?
Are procedures to document and report spill events as
required in the Order?
Are procedures to annually review and assess
effectiveness of the SERP and update as needed?
SEWER PIPE BLOCKAGE/FOG CONTROL
PROGRAM
Does the SSMP contain a FOG program?
Does the SSMP contain an implementation program and
schedule for public outreach and education about FOG
and pipe-blocking substances disposal?
Does the SSMP contain a plan and schedule for disposal
of pipe-blocking substances and FOG generated within
the service area?
Does the SSMP contain the legal authority to prohibit
discharges to the sewer system?
Does the SSMP contain measures to identify sources of
FOG and pipe-blocking substances?
Does the SSMP contain requirements to install grease
removal devices design standards, maintenance
requirements, BMP requirements, record keeping and
reporting requirements for grease interceptors?
Does the SSMP contain the legal authority to inspect
grease producing facilities and enforce the FOG
ordinance? Does the Enrollee have sufficient staff to
inspect and enforce the fats, oils, and grease ordinance? Does the SSMP identify service areas that require
regular maintenance due to FOG/ pipe-blocking
substances and a schedule for each?
Are source control measures implemented to control
FOG?
7 Table No. 4 – FOG Program
2021 2022 2023 Avg
Number of Interceptor Inspections
Number of Interceptors
SEWER SYSTEM
MANAGEMENT PLAN YES NO Needs
Updating Comments
SYSTEM EVALUATION, CAPACITY ASSURANCE
AND CAPITAL IMPROVEMENTS
Does the Plan include procedures and activities for
routine evaluation and assessment of system conditions? Does the Plan include procedures and activities for
capacity assessment and design criteria?
Does the Plan include procedures and activities for
prioritization of corrective actions?
Is there a Capital Improvement Plan?
Does the Plan identify and justify the amount
(percentage) of its system for its condition to be assessed each year?
Are the following condition assessments of system areas prioritized:
Hold a high level of environmental consequences if
vulnerable to collapse, failure, blockage, capacity issues, or other system deficiencies
Are located in or within the vicinity of surface waters, steep terrain, high groundwater elevations, and
environmentally sensitive areas
Are within the vicinity of a receiving water with a
bacterial-related impairment on the most current CWA
303(d) List
Assess the system conditions using visual observations, video surveillance and/or other comparable system
inspection methods
Utilize observations/evidence of system conditions that may contribute to exiting of sewage from the system
which can reasonably be expected to discharge into a
water of the State
Maintain documents and recordkeeping of system
evaluation and condition assessment inspections and
activities;
Identify system assets vulnerable to direct and indirect impacts of climate change, including but not limited to:
sea level rise; flooding and/or erosion due to increased storm volumes, frequency, and/or intensity; wildfires;
and increased power disruptions.
Does the plan include procedures to identify spills
caused by hydraulic deficiency and/or limited capacity, including:
8 SEWER SYSTEM
MANAGEMENT PLAN YES NO Needs
Updating Comments
Dry-weather peak flow conditions that cause or
contributes to spill events;
The appropriate design storm(s) or wet weather events
that causes or contributes to spill events;
The capacity of key system components; and
Identify the major sources that contribute to the peak
flows associated with sewer spills.
Does the Capacity Assessment consider:
Data from existing system condition assessments,
system inspections, system audits, spill history, and
other available information
Capacity of flood-prone systems subject to increased
infiltration and inflow, under normal local and regional storm conditions;
Capacity of systems subject to increased infiltration and inflow due to larger and/or higher-intensity storm events as a result of climate change;
Increases of erosive forces in canyons and streams near underground and above-ground system components due
to larger and/or higher-intensity storm events;
Capacity of major system elements to accommodate dry
weather peak flow conditions, and updated design storm
and wet weather events; and
Necessary redundancy in pumping and storage
capacities
The findings of the condition assessments and capacity
assessments must be used to prioritize corrective actions.
Prioritization must consider the severity of the
consequences of potential spills.
Has the sanitary sewer system been evaluated to identify areas in need of improvement, repair, or replacement?
Have CIPs been created to address these areas?
Do the CIPs include an implementation schedule,
including completion dates, and internal/external
funding sources for each project?
9 SEWER SYSTEM
MANAGEMENT PLAN YES NO Needs
Updating Comments
Is this section of the SSMP up to date?
Are resources used to evaluate the sanitary sewer system up to date?
Are procedures included to evaluate the sewer system
assets utilizing the best practices and technologies
available?
MONITORING, MEASUREMENT AND
PROGRAM MODIFICATIONS
Does the Plan must include an Adaptive Management
section that addresses Plan-implementation effectiveness and the steps for necessary Plan improvement?
Are steps included to maintain relevant information,
including audit findings, to establish and prioritize
appropriate Plan activities?
Monitoring the implementation and measuring the
effectiveness of each Plan Element;
Assessing the success of the preventive operation and
maintenance activities
Updating Plan procedures and activities, as appropriate, based on results of monitoring and performance
evaluations; and
Identifying and illustrating spill trends, including spill frequency, locations and estimated volumes
INTERNAL AUDITS
Does the Plan include internal audit procedures,
appropriate to the size and performance of the
system?
COMMUNICATION PROGRAM
Does the Plan include procedures to communicate with
the Public for spills resulting in public area closures, or that enter a source of drinking water?
Does the Plan include procedures for the development,
implementation, and update of the Plan, including
opportunities for public input to Plan implementation
and updates?
Does the Plan include procedures to communicate with
Owners/Operators of systems that connect into the
Enrollee’s system, including satellite systems, for
system operation, maintenance, and capital
improvement-related activities?
10 AUDIT REPORT
SSMP Audit Requirements:
The internal audit shall be appropriately scaled to the size of the system(s) and the number of spills. The Enrollee’s sewer system operators must be involved in completing the audit. At minimum, the audit must:
• Evaluate the implementation and effectiveness of the Enrollee’s Sewer System Management Plan in preventing spills;
• Evaluate the Enrollee’s compliance with this General Order; • Identify Sewer System Management Plan deficiencies in addressing ongoing spills and discharges to waters of the State; and
• Identify necessary modifications to the Sewer System Management Plan to correct deficiencies.
The Enrollee shall submit a complete audit report that includes:
• Audit findings and recommended corrective actions;
• A statement that sewer system operators’ input on the audit findings has been considered; and • A proposed schedule for the Enrollee to address the identified deficiencies.
Audit Summary and Recommendations:
Schedule to Address Deficiencies:
Operator Input