15 • Kept in hardcopy format within binders located in each Collections vehicle for immediate access by field personnel during response activities.
These measures ensure that the SERP is readily available to all relevant staff for reference, training, and real-time spill response.
16 7.0 Sewer Pipe Blockage Control Program
This section describes the City’s efforts to reduce blockages in the sanitary sewer system that may result in Spills. Formerly focused solely on FOG, this program has been broadened in scope to address all common pipe-blocking substances, including rags, roots, debris, sediment, and illegal discharges.
7.1 Public Education and Outreach
The City of Colton implements a public education and outreach program targeting both residential and commercial users to reduce the discharge of pipe-blocking materials into the sanitary sewer system. Outreach includes:
• Distribution of multilingual Best Management Practices (BMP) posters and brochures to FSEs, with posters required to be visibly posted in kitchen and wash areas. Sample FOG BMP posters in English and Spanish are included in Appendix 7. • Participation in city-sponsored community events where the ECD staffs educational booths. At these events, the impacts of flushing wipes and proper disposal of cooking oil, food scraps, and grease. Sample “Cool it, Can it, Trash it” community outreach material is included in Appendix 7.
• Educational materials such as flyers, kitchen posters, and giveaways (e.g., sink strainers, magnets) that reinforce proper waste disposal behaviors. Additional regional outreach materials, such as the San Bernardino County FOG Factsheet, are also included in Appendix 7.
7.2 Disposal Plan and Schedule
All FOG and oil/water separator waste generated within the City must be disposed of by permitted haulers at authorized facilities. The City maintains a list of vetted haulers who hold valid San Bernardino County Liquid Waste Hauler Permits and dispose of waste at recognized treatment or disposal sites.
This list is reviewed and updated periodically. Environmental Compliance staff verify hauling and disposal records, including manifests, to ensure that waste is being handled by approved haulers and delivered to appropriate facilities.
A complete list of currently approved haulers and disposal sites is provided in Appendix 7.
7.3 Legal Authority to Prohibit Discharges
The City enforces Ordinance No. O-03-19 and Colton Municipal Code Chapter 13.08, which collectively provide the legal authority to prohibit discharges that may interfere with the sanitary sewer system.
In particular, Section 13.08.211 – Specific Discharge Prohibitions provides a comprehensive list of prohibited discharges to the Publicly Owned Treatment Works (POTW), including but not limited to:
17 • (B) Solid or viscous substances which may cause obstruction to sewer flow or interference with treatment operations, such as grease, rags, spent grain, animal waste, and similar debris;
• (C) Wastewater with corrosive properties, including low or high pH; • (D) Hazardous or toxic substances that could interfere with treatment processes or pose risks to workers or the public;
• (R) Excessive quantities of dispersed biodegradable oils or fats such as lard, tallow, or vegetable oil that may solidify or become viscous.
These prohibitions reinforce the City’s ability to regulate and enforce source control practices and prohibit discharges that contribute to sewer pipe blockages or Spills. In conjunction with federal regulation 40 CFR 403.5(b)(3), which prohibits interference or obstruction of POTW operations, this local code provides enforceable authority for implementing blockage control measures.
7.4 Grease Removal Device Requirements
All new FSEs in the City of Colton and Grand Terrace are required to install properly sized and maintained grease interceptors, as mandated by Colton Municipal Code Section
13.08.235 – Special Restrictions for Food Processing Facilities. This section requires all FSEs discharging food processing waste to the sewer system to direct such discharges through a gravity separation interceptor with a minimum capacity of 100 gallons. The sizing must comply with the Uniform Plumbing Code as adopted by the City.
Grease removal devices must also comply with Section 13.08.253 – Gravity Separation Interceptor, which establishes:
• Design standards and sizing criteria;
• Requirements for sample chambers;
• Provisions for accessibility and inspection;
• Prohibition on chemical use to dissolve grease;
• Maintenance requirements to ensure performance.
Interceptors must be watertight, structurally sound, and capable of retaining both floatable and settleable materials. They must be maintained to prevent the accumulation of solids and floating materials in excess of 25% of the device’s fluid capacity. When this limit is exceeded, cleaning is required.
Per San Bernardino County Environmental Health Services (EHS) policy, the installation of indoor grease traps is prohibited in food preparation, food storage, and utensil cleaning areas.
Only outdoor gravity grease interceptors are approved for new installations. Existing indoor grease traps may only remain in service if previously permitted and maintained in proper working conditions.
18 Colton Municipal Code Section 13.08.207 – Record Keeping requires FSEs to retain records of all monitoring activities, including maintenance and cleaning logs, for at least three years.
Environmental Compliance Inspectors verify compliance with these requirements during semi-annual inspections and document findings in the City’s compliance tracking system.
7.5 Inspection and Enforcement
The City of Colton maintains the legal authority to inspect grease-producing facilities and enforce all requirements related to the installation, maintenance, and performance of grease removal devices. These authorities are granted under Colton Municipal Code Chapter 13.08, particularly:
• Section 13.08.260 – Inspection and Sampling, which authorizes the City to enter any facility that discharges non-domestic wastewater for the purposes of inspection, sampling, compliance monitoring, and record review.
• Section 13.08.207 – Record Keeping, which requires users to maintain records of monitoring activities, including BMPs and maintenance logs, for a minimum of three years and to present them during inspections.
The City contracts with G&G Environmental Compliance, Inc. to administer its regulatory compliance program, including implementation and enforcement of the FOG ordinance.
G&G staff assigned to Colton conduct routine and follow-up inspections of FSEs, maintain compliance records, and issue enforcement actions as needed. The SSMP Audit (2024) confirms that three inspectors are currently assigned to Colton, with qualifications ranging from Environmental Compliance Inspector Trainee to Senior Environmental Compliance Inspector, including certifications through the California Water Environment Association.
Environmental Compliance Inspectors conduct semi-annual inspections of all FSEs. These inspections verify:
• Proper installation and functioning of grease interceptors; • Adequate maintenance frequency;
• The use of prohibited chemical agents
• Implementation of required BMPs; and
• Availability of current cleaning logs and hauling manifests.
Findings from these inspections are documented in the City’s compliance database (e.g., Linko). When violations are observed, G&G staff initiate enforcement procedures under the City’s ERP, adopted in 2015, developed in accordance with 40 CFR 403.8(f)(5). The ERP outlines procedures for:
• Investigating instances of noncompliance;
• Applying escalating enforcement actions proportionate to the nature and severity of the violation;
• Assigning enforcement responsibilities by staff title;
19 • Tracking violations through resolution;
• Ensuring consistent, fair, and timely enforcement outcomes.
CCTV footage and field observations are also used by G&G staff to document physical evidence of violations when necessary. The ERP allows the City to initiate enforcement at any level deemed necessary to protect the operation of the POTW, the safety of City employees, the environment, and public health.
7.6 Identification of Problem Areas and Cleaning Schedule The City of Colton identifies areas within the sanitary sewer system that are prone to blockages caused by FOG, rags, roots, and other debris. These high-risk segments, commonly referred to as “hotspots,” are designated based on a combination of:
• Historical Spill data;
• CCTV inspection findings;
• Routine cleaning logs and maintenance reports; and
• Observations from field crews and Environmental Compliance staff.
These segments are tracked in coordination with the City’s O&M program (see Section 4.0).
Additional CCTV inspections may be scheduled to assess ongoing risk or evaluate the effectiveness of current cleaning schedules.
The City uses internal work orders, inspection logs, and CIWQS-reported Spill data to track trends over time, evaluate hotspot performance, and update cleaning frequencies accordingly.
This ensures that the cleaning program remains dynamic and responsive to system conditions.
A list of the current high-risk segments is maintained by the City and includes information such as the general location of each segment, the likely cause of recurring blockages, and the cleaning or CCTV inspection frequency assigned. This list is reviewed and updated annually based on spill data, CCTV findings, and routine maintenance records, and is provided in Appendix 4 of this SSMP.
7.7 Source Control Measures
The City of Colton implements source control measures to reduce the discharge of FOG, rags, wipes, and other debris from entering the sanitary sewer system. These measures are aimed at both commercial and industrial users and are designed to eliminate the root causes of sewer pipe blockages before they impact the system.
Key source control practices include:
• Routine FSE Inspections: Environmental Compliance Inspectors conduct semiannual inspections of all FSEs to verify the proper installation, maintenance, and cleaning of gravity grease interceptors. Inspectors review grease manifest logs, BMP implementation, and the use of prohibited chemical agents (e.g., enzymes or emulsifiers).
20 • Auto Service Facility Inspections: The City inspects vehicle service businesses and car washes to ensure they are equipped with and properly maintaining gravity oil/water separators. These inspections also include verification of hauling manifests and spill prevention practices. Requirements for these facilities are codified in Colton Municipal Code Section 13.08.225.
• Interdepartmental Coordination: When Collections staff encounter blockages caused by FOG, wipes, or other substances during routine cleaning or CCTV inspections, they notify Environmental Compliance staff for source identification and follow-up. This coordination occurs through direct communication, tagging in digital logs, or email referrals. Environmental Compliance staff then conduct site inspections to determine the source and take corrective action.
• Control of Prohibited Cleaning Agents: The City prohibits the use of chemical or biological agents intended to dissolve or emulsify grease, in accordance with Colton Municipal Code Section 13.08.253. These products are known to contribute to downstream blockages and are flagged during inspections. • Education as Prevention: Source control is further reinforced through education at the time of inspection, during community outreach events (see Section 7.1), and through follow-up correspondence for non-compliant facilities.
These practices serve as a first line of defense in the City’s Sewer Pipe Blockage Control Program and support long-term reductions in Spills caused by improper waste disposal behaviors.
21 8.0 System Evaluation, Capacity Assurance and Capital Improvements The City of Colton’s wastewater collection system planning is guided by the 2016 Sewer Master Plan (SMP), which serves as the City’s most recent comprehensive evaluation of system condition, capacity, and performance. Key excerpts supporting this SSMP are provided in Appendix 8. The SMP incorporates a system-wide hydraulic model, condition forecasting, flow monitoring, and capital improvement planning to support infrastructure investment through the 2040 planning horizon. While the SMP was completed prior to the adoption of State Water Resources Control Board Order 2022-0103-DWQ, it incorporates many foundational elements now required under the Order. For areas where additional procedures or documentation are needed, the City will work with its contracted professionals to further develop and implement these elements as part of the next SMP update, currently anticipated in 2026.
8.1 System Evaluation and Condition Assessment
The 2016 SMP includes a system-wide asset inventory, hydraulic modeling, GIS mapping, and an age-based condition assessment of gravity sewers. Condition evaluations were informed by CCTV inspections, flow monitoring data, and preventive maintenance records.
Approximately 30.7 miles of pipeline were projected to reach the end of their useful life by 2040, with 1.5 miles prioritized for near-term improvements. These findings have supported proactive planning and rehabilitation efforts within the City’s Capital Improvement Program (CIP).
Key elements of the City’s current condition assessment program include:
• Use of CCTV and GIS tools to identify system defects and inform capital planning; • Integration of pipe age, material, and historical performance data to forecast infrastructure needs;
• Alignment of condition findings with system cleaning, inspection, and rehabilitation efforts.
To further strengthen this program and enhance alignment with Order 2022-0103-DWQ, the City intends to:
• Establish a defined percentage of the system to be evaluated annually, based on risk, resources, and system criticality;
• Implement a risk-based prioritization process for inspections that considers environmental sensitivity, proximity to surface waters, and known problem areas; • Evaluate system vulnerabilities to climate-related impacts such as high groundwater, flooding, wildfire, and extreme storm events;
• Formalize procedures for identifying conditions that may contribute to exfiltration or unauthorized discharges.
22 These enhancements will be developed by qualified consultants in collaboration with City staff and incorporated into the next SMP update.
8.2 Capacity Assessment and Design Criteria
The SMP includes a calibrated hydraulic model built in InfoSWMM, incorporating both dryweather and wet-weather flow scenarios for 2015 and projected 2040 conditions. The model was informed by extensive flow monitoring throughout the system and used a 10-year, 24- hour design storm to simulate peak wet-weather flow. Capacity constraints were identified under both baseline and future buildout conditions, and targeted improvements were incorporated into the CIP to ensure reliable system performance.
The City has established a strong foundation in capacity planning through:
• Evaluation of major system components, including gravity mains, lift stations, and force mains;
• Modeling of system response to infiltration and inflow (I/I) and future population growth;
• Identification of hydraulic restrictions and their inclusion in phased infrastructure improvements;
• Use of design storm standards and monitoring data to simulate system performance under wet-weather conditions.
To meet the evolving requirements of the General Order, the City plans to expand its capacity evaluation practices to include:
• Integration of spill data, inspection findings, and audit outcomes into future model updates;
• Identification of flood-prone areas and evaluation of infrastructure performance under regionally representative storm conditions;
• Assessment of the potential impacts of climate change on I/I rates and storm severity; • Consideration of erosion risks for infrastructure near streams or canyons; • Documentation of redundancy standards and emergency storage capacity at lift stations and critical nodes.
These efforts will ensure that future capacity planning efforts are resilient, data-driven, and responsive to emerging risks.
8.3 Prioritization of Corrective Action
The City’s existing CIP, as outlined in the SMP, prioritizes corrective actions based on pipeline condition, projected capacity needs, and anticipated development. Projects are categorized into near-term (through 2020) and long-term (2021–2040) phases, based on system needs and resource planning. Priority is generally assigned to:
• Assets with limited remaining service life;
23 • Locations with observed or modeled capacity deficiencies; • Areas expected to experience significant growth or increased flows.
To further strengthen its prioritization process, the City plans to introduce a formal risk-based approach in future planning cycles. This framework will consider:
• Likelihood and consequence of failure;
• Proximity to environmentally sensitive or high-traffic areas; • Potential impacts on public health, water quality, and regulatory compliance.
The City intends to work with experienced engineering consultants to develop prioritization tools that reflect best practices in risk-informed asset management.
8.4 Capital Improvement Plan
The City’s CIP is structured around the phased recommendations developed in the 2016 SMP.
The plan identifies specific projects aimed at addressing current and future deficiencies in system capacity and condition. Projects are grouped into near-term and long-term planning horizons, with planning-level cost estimates provided for each. The CIP continues to guide infrastructure investment and planning throughout the City.
The City has taken key steps to align its CIP with the intent of the General Order, including:
• Identifying and prioritizing specific infrastructure projects based on modeled system needs;
• Providing cost estimates to support financial planning and budget development; • Aligning capital projects with long-term service goals and regulatory compliance.
To support full compliance with Order 2022-0103-DWQ, the next SMP and CIP update will include:
• Defined project schedules and anticipated completion timelines; • Identification of internal and external funding sources, including potential use of grants or SRF financing;
• Documentation of coordination protocols between O&M staff, engineering, consultants, and relevant utility or regulatory agencies.
These improvements will ensure that the City’s capital program continues to evolve with the system and supports sustainable, well-managed sewer infrastructure.
24 9.0 Monitoring, Measurement and Program Modifications The City of Colton is committed to actively monitoring the implementation and effectiveness of this SSMP through a structured, performance-based approach. In accordance with the Order, the City evaluates each SSMP element using quantifiable performance metrics, audit findings, and Spill trends. This section outlines the tools and procedures used to track performance, assess the success of preventive maintenance activities, and guide timely updates to the SSMP. These efforts ensure that the Plan remains accurate, effective, and aligned with current system conditions, operational practices, and regulatory expectations.
9.1 Maintaining Relevant Information
To support continuous improvement and ensure the SSMP is implemented effectively, the City of Colton has adopted an Adaptive Management approach. This includes the proactive collection, organization, and use of relevant information to guide decisions, address deficiencies, and prioritize system needs.
The following activities are performed to maintain the information necessary to establish and prioritize SSMP activities:
Maintain Centralized SSMP Document Folder
All relevant SSMP implementation documents — including audits, performance tracking logs, inspection summaries, capital improvement reports, Spill forms, and training records — are stored in a centralized folder accessible to designated staff. • Responsible Party: ECD and Collections
• Location: The City’s Wastewater Shared Drive
• Frequency: Ongoing
• Purpose: Enables organized tracking of decisions and activities supporting implementation, audits, and reporting requirements.
Maintain SSMP Tracking Log
The City maintains a living SSMP task tracking log to document ongoing improvements, modifications, and progress related to the SSMP, including updates to standard operating procedures (SOPs), plans, and supporting documents. The log captures actions taken in response to audits, inspections, post-spill evaluations, and staff recommendations, and includes a summary of when and how each SSMP element was last reviewed or updated. • Responsible Parties: ECD and Collections
• Location: The City’s Wastewater Shared Drive
• Frequency: Quarterly
• Purpose: Serves as a decision-support tool for tracking issues, monitoring trends, and identifying priority areas for updates, preventive maintenance, or additional resources.
25 Meet to Review Audit Findings
Following each internal SSMP audit, representatives from the ECD, Collections, and Engineering meet to review findings. These discussions are used to prioritize actions, develop corrective strategies, and determine which elements require updating. • Participants: All departments involved (ECD, Collections, Engineering) • Frequency: After each SSMP audit (every 3 years, at minimum) • Purpose: Ensures collaborative review and documentation of lessons learned and needed improvements.
Incorporate Major Deficiencies into Capital Improvement Planning SSMP data is also reviewed annually by the Engineering Division to evaluate whether longterm infrastructure upgrades are needed. Significant issues (e.g., repeated failures at the same location, structural deficiencies) are flagged and evaluated for possible inclusion in the CIP. • Responsible Party: Engineering Division
• Frequency: Annually (typically in coordination with the CIP budget cycle) • Purpose: Ensures that long-term needs identified through SSMP monitoring are formally evaluated for capital planning and funding allocation.
The structure above ensures that the SSMP is not a static document but an active management tool that supports data-informed decision-making, regulatory compliance, and the long-term reliability of the City’s wastewater collection system.
9.2 Monitoring Implementation and Measuring Effectiveness To comply with the Order, the City uses clearly defined metrics to track implementation and assess effectiveness. This process supports data-informed decision-making, continuous improvement, and regulatory compliance.
Evaluation Metrics Table
A master SSMP Evaluation Metrics Table has been developed to track both the implementation status and effectiveness of each Plan Element. The table includes:
• A clearly defined performance metric for each SSMP Element • Historical baseline data (where available)
• Annual targets aligned with City goals and regulatory standards • Responsible staff or departments
• Data sources used to verify implementation
• Columns to document actual annual performance and status notes This table is maintained and updated annually by the ECD, in coordination with other departments. The most recent version is retained in the City's SSMP documentation repository
26 Annual and Triennial Review
Metrics are reviewed:
• Annually, as part of the City’s internal performance evaluation • Every three years, during the triennial SSMP audit
Each review includes:
• An assessment of whether performance targets were achieved • A summary of trends and performance gaps
• Documentation of corrective actions, if applicable
Continuous Improvement
If any SSMP Element is found to be underperforming or not fully implemented, City staff use the results of the evaluation to:
• Identify the root cause
• Adjust procedures, schedules, or staffing
• Propose updates to the SSMP or associated programs (e.g., O&M schedules, enforcement protocols)
All corrective actions taken based on metric outcomes are logged in the City’s SSMP Tracking Log and included in future performance reviews.
This approach ensures that SSMP implementation is not only tracked but evaluated for effectiveness — in line with the performance-based intent of the Order.
9.3 Assessing the Success of the Preventive Operation and Maintenance Activities To ensure that preventive maintenance activities are effective in minimizing sewer system failures and Spills, the City of Colton has adopted a performance-based assessment strategy.
The City evaluates the success of its preventive O&M program using the following two methods:
Tracking Spills Over Time by Cause
The City tracks all Spills annually, with each spill categorized by:
• Root cause (e.g., roots, grease, debris, structural failure) • Volume spilled and recovered
• Whether the Spill was deemed preventable
This information is compiled from post-spill evaluation forms and CIWQS entries. By identifying trends in causes, the City can evaluate the effectiveness of its cleaning schedules, enforcement efforts, and public education campaigns.
27 A reduction in the number and volume of Spills—particularly those caused by roots, grease, or debris—indicates the success of preventive maintenance efforts. If trends show an increase in preventable Spills, corrective actions will be identified and implemented through coordination between the Collections and ECD.
Comparing Scheduled vs. Completed Preventive Maintenance Activities The City maintains a preventive maintenance schedule for sewer line cleaning, CCTV inspection, and lift station servicing. These activities are tracked using internal logs or the City's maintenance management system.
At the end of each month and each calendar year, the City calculates the percentage of scheduled preventive maintenance that was completed. This includes:
• Miles or linear feet of sewer cleaned versus scheduled • Percent of system CCTV-inspected
• Frequency of mechanical maintenance on lift stations
By comparing scheduled and completed tasks, the City can identify gaps in execution, evaluate resource needs, and make necessary adjustments to ensure that high-priority areas are adequately maintained.
9.4 Updating the SSMP based on Monitoring and Performance The City of Colton is committed to maintaining an SSMP that is reflective of current system conditions, responsive to performance trends, and consistent with the Order. As such, the SSMP is updated as necessary based on the results of monitoring, performance evaluations, and SSMP audits.
Triggers for Updating the Plan
The City reviews and updates the SSMP whenever one or more of the following occurs:
• A triennial SSMP audit identifies deficiencies or outdated practices. • Annual performance reviews reveal underperformance in key areas (e.g., recurring Spills, incomplete preventive maintenance, enforcement gaps). • New regulatory requirements or internal policies are adopted. • Significant operational or organizational changes occur, including changes to staffing, software systems, maintenance practices, or design standards. • Corrective actions are implemented in response to major Spills, enforcement orders, or capital improvements.
Using Monitoring Results to Inform Updates
The City uses data collected from the following sources to identify necessary SSMP updates:
• The SSMP Evaluation Metrics Table (Section 9.2)
• Spill trends and root cause analysis (Section 9.3)
28 • Preventive maintenance completion rates (Section 9.3) • SSMP audit findings (Section 10.0)
• Post-spill evaluation forms
• Feedback from operations, engineering, and compliance staff If these data sources indicate that an SSMP element is not achieving its intended objective — or if implementation procedures are unclear, outdated, or ineffective — the City will revise the relevant section of the SSMP accordingly.
Change Tracking and Documentation
All updates to the SSMP are documented in a Change Log maintained by the ECD. Each entry in the log includes:
• The date of the change
• The SSMP section updated
• A summary of the change
• The reason for the change (e.g., audit finding, performance gap, regulatory revision) • The individual or department responsible for initiating the change This log ensures transparency, continuity, and regulatory compliance and is included in Appendix 9 of this SSMP.
Responsibility and Oversight
The ECD coordinates SSMP updates and solicits input from the Collections and Engineering Divisions as appropriate. The updated SSMP is reviewed internally and, when applicable, submitted for certification and upload to the CIWQS system in accordance with Order requirements.
9.5 Spill Trends
The City of Colton evaluates spill trends to assess sewer system performance, identify areas of concern, and support continuous improvement of the SSMP. This section describes how the City identifies and illustrates spill trends, including spill frequency, locations, and estimated volumes.
Use of CIWQS Data and Reporting Tools
Colton relies on the CIWQS Online Spill Database to compile and analyze historical spill data. Each year, the City downloads the CIWQS-generated Annual Spill Report Summary, which includes:
• Total number of Spills per calendar year (10-year trend) • Spill volumes by year (total and category-based)
• Causes of Spills (e.g., roots, grease, debris)
• Distribution of Spills by category (Category 1, 2, or 3)
29 • Spill location data (viewable via the CIWQS mapping interface) These visuals and tables are included in Appendix 9. CIWQS data is considered the City’s primary regulatory data source for evaluating long-term spill trends in the sewer collection system.
Use of City-Generated Spill Summary Table
In addition to CIWQS-generated data, the City maintains its own internal Spill Summary Table, included in Appendix 9. This table provides enhanced detail for each spill event, including:
• Spill date and precise location
• Spill category and estimated volume
• Volume recovered and percent recovery
• Probable cause
• Field response time
The Spill Summary Table is updated annually by City staff and serves as an internal planning and performance evaluation tool. While CIWQS data supports regulatory compliance and broad trend analysis, the City’s own records are used to evaluate response efficiency, identify recurring problem areas, and support proactive system management.
Review and Interpretation of Trends
City staff review spill data annually and during each triennial SSMP audit to evaluate whether preventive maintenance and other SSMP programs are minimizing spill frequency and severity. Particular attention is given to:
• Increases or decreases in total spills
• Recurring causes of spills (e.g., FOG-related incidents) • Volume of unrecovered spills over time
• Locations with multiple spills across multiple years
If problematic trends are identified, such as recurring causes or high-volume events, the findings are used to adjust maintenance schedules, revise enforcement strategies, or initiate staff retraining as necessary.
30 10.0 Internal Audits
The City of Colton conducts internal audits of its SSMP at least once every three years, as required by the Order. These audits serve to evaluate the implementation and effectiveness of the SSMP in preventing Spills and to ensure continued compliance with the Order.
10.1 Audit Approach
The City’s internal audit process is scaled to reflect the size and performance of its sanitary sewer system. To support the audit process, the City uses an internal audit checklist and gathers input from sewer system operators through a staff feedback questionnaire. Both documents are provided in Appendix 10.
Key features of the internal audit process include:
• Element-by-element review of the SSMP to verify implementation of procedures and identify any gaps or outdated practices.
• Staff interviews and input gathering from representatives of Collections, Environmental Compliance staff, and supervisory personnel responsible for day-today implementation of the SSMP. • Review of documentation, such as work orders, maintenance logs, inspection records, and training logs, to verify that stated practices are being followed. • CIWQS data review to evaluate spill trends and assess the effectiveness of system operation and maintenance activities.
• Assessment of changes in staffing, infrastructure, procedures, or regulations that may necessitate updates to the SSMP.
10.2 Roles and Responsibilities
The audit is coordinated by the ECD (or designee), with input from operations staff and department supervisors. Input from those directly involved in implementing the SSMP is a critical part of the audit process.
10.3 Audit Report and Certification
The City prepares a written audit report within six months after the close of each audit period.
The report includes:
• An evaluation of SSMP implementation and effectiveness • Identification of any deficiencies
• Recommended corrective actions
• A schedule for implementing corrections
• A statement that input from sewer system operators was considered The audit report is certified by the LRO and submitted through the CIWQS Sanitary Sewer System Database in accordance with the Order.
31 For systems like Colton, enrolled under the Order on or before August 2, 2022, internal audits must evaluate three-year periods beginning August 2, 2021, and every three years thereafter.
The audit report must be certified and submitted to CIWQS within six months after the close of each three-year period. Therefore, audit reports are due to CIWQS on the following recurring schedule:
• February 1, 2025 (covering August 2, 2021 – August 1, 2024) • February 1, 2028 (covering August 2, 2024 – August 1, 2027) • February 1, 2031, and so on.
These dates ensure alignment with Section 5.4 of the Order and support proactive SSMP management and regulatory compliance. The most recent SSMP Audit Report, completed in 2024, is included in Appendix 10.
32 11.0 Communication Program
The City of Colton is actively working toward full compliance with the requirements of Element 11 under the Order. While key communication procedures are under development and not yet fully implemented, the City has outlined a clear path forward, with actions being tracked in the SSMP Tracking Log and targeted for completion after the August 2025 SSMP deadline. The next Internal Audit will confirm the implementation of the procedures described in this section. Once finalized, relevant staff will be trained on all new procedures.
11.1 Public Notification of Spills and Discharges
The City of Colton has procedures in place, documented in the SERP, for notifying the public at the physical spill location when a Spill occurs. These include:
• Posting bilingual signage in affected public areas (e.g., parks, trails, roads), • Coordinating with the San Bernardino County Department of Public Health for spills that may pose a risk to public health or affect drinking water sources, • Taking immediate containment and public protection actions by trained field staff.
While these practices address the on-site public notification requirements, the Order also requires the City to implement procedures for broader community-wide communication when a spill causes the closure of a public area, or a spill enters or threatens a source of drinking water.
To address this, the City is developing an SOP to guide citywide public notifications. This SOP, scheduled for completion by Fall 2025, will outline:
• Posting alerts on the City’s website and social media platforms; • Defining thresholds and roles for initiating broader public outreach; • Documenting all public communication actions related to spill events.
This SOP will reference and align with the SERP to ensure consistent, multi-channel communication to both field responders and the general public.
Upon finalization, the SOP will be added to Appendix 11, noted in the SSMP Change Log, and relevant staff will be trained to ensure effective implementation. The next Internal Audit will verify completion and effectiveness of this procedure.
11.2 Public Participation in SSMP Development and Updates The City of Colton is committed to engaging the public in the development and ongoing improvement of its SSMP. Although formal procedures are still being finalized, the City is actively working to establish a transparent public participation process that meets the requirements of Element 11.2 under the Order.
The City plans to implement the following public engagement procedures by Fall 2025:
• Upload the SSMP to the City’s website, making it accessible to the general public.
33 • Post announcements on social media to inform the community that the SSMP is available for review and that feedback is encouraged.
• Collaborate with the City’s social media and communications team to develop and post outreach messages that support SSMP engagement and education on sewerrelated issues (e.g., FOG, wipes, rags). • Provide a public comment mechanism in the form of a dedicated email address, so residents and stakeholders can offer input.
• Route all public comments to the appropriate departments for review and consideration (e.g., Environmental Compliance, Collections). • Include a record of public comments and responses in the next SSMP audit or update, as applicable.
The procedures described above will be documented in a formal SOP and included in Appendix 11 of the SSMP once finalized. Relevant staff will be trained on how to receive, respond to, and document public feedback. Implementation of this process will be confirmed during the next Internal Audit.
11.3 Communication with Satellite and Connecting Systems The City of Colton is responsible for the operation and maintenance of the Grand Terrace Wastewater System. Communication protocols between Colton and Grand Terrace are established in a formal Sewer Service Agreement, which outlines each agency’s responsibilities related to operations, emergency response, capital improvements, and public engagement. A copy of this agreement is included in Appendix 11 of this SSMP.
Under the terms of the agreement:
• Colton is responsible for responding to all emergencies, including unauthorized discharges, leaks, or spills. Colton must notify all applicable government agencies and Grand Terrace concurrently and prepare documentation of the incident and response actions.
• Grand Terrace is required to cooperate with Colton in providing access for normal and major maintenance, permit issuance, and coordination related to system restoration or capital improvements.
• Colton manages customer service inquiries and complaints related to the Grand Terrace system and coordinates with Grand Terrace on public outreach and education efforts.
These established procedures demonstrate compliance with Element 11 of the Order, ensuring clear and ongoing communication between the Enrollee and the satellite system it manages.
This communication framework supports system performance, regulatory reporting, and service coordination across jurisdictions.
Implementation of these responsibilities will be confirmed during the next Internal Audit.
34 Appendix 0 - Administration & Certification
Activity Frequency Responsible Party Next Due Date Notes Internal SSMP Audit Eveyr 3 Years Environmental
Compliance
Department
2/2/2028 Audit must evaluate SSMP
effectiveness and
implementation.
SSMP Update Every 6 Years Environmental
Compliance
Department
8/2/2031 Required by Order 2022-0103-
DWQ. Last update due August 2,
2025.
State Water Resources Control Board
Date:
NOTICE OF APPLICABILITY; CONTINUATION OF REGULATORY COVERAGE; STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER, 2022-0103-DWQ Dear
Thank you for certifying your Continuation of Existing Regulatory Coverage form in the California Integrated Water Quality System (CIWQS) database. This Notice of Applicability serves as confirmation of the continuation of regulatory coverage from Order 2006-0003-DWQ to Order 2022-0103-DWQ for:
· Agency name:
· Sanitary Sewer System name:
· Waste Discharge Identification Number (WDID):
· Certification date:
As of the June 5, 2023 effective date, General Order 2022-0103-DWQ serves as the new statewide waste discharge requirements regulating sanitary sewer systems.
The General Order, including all Attachments, is enforceable by the State Water Resources Control Board and the applicable Regional Water Quality Control Board.
As of June 5, 2023, Order 2006-0003-DWQ is rescinded (except for enforcement purposes) and previously-held regulatory coverage under Order 2006-0003-DWQ is terminated.
If you have any questions regarding the statewide Sanitary Sewer Systems General Order or this Notice of Applicability, please email your questions to [email protected].
Sincerely,
Karen Mogus, Deputy Director
Division of Water Quality
April 13, 2023 Colton City Colton City 650 La Cadena Drive Colton, CA 92324 Bassam Alzammar Bassam Alzammar April 13, 2023Colton Water Reclamation Facility CS 8SSO10636 Page 1094 of 1440 35 Appendix 1 - SSMP Goals and Introduction
Created: 2025-05-06 09:54:23 [EST]
(Supp. No. 38)
13.08.203 Responsibility for Installation, Maintenance and Replacement.
The costs for installation, maintenance, and replacement of the sewer service lateral as defined in Section
13.08.105, shall be the responsibility of the property owner. (Ord. No. O-03-19, § 1, 5-7-2019)
36 Appendix 2 – Organization
37 Appendix 3 - Legal Authority
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
ORDINANCE NO. 0-03-19
AN ORDINANCE OF THE CITY OF COL TON, CALIFORNIA, AMENDING CHAPTER
13.08 OF THE COLTON MUNICIPAL CODE, REGULATING THE DISCHARGE OF
WASTES INTO THE SEWERAGE SYSTEM OF THE CITY OF COL TON AND REPEALING ORDINANCE NO. 0-02-15.
THE CITY COUNCIL OF THE CITY OF COL TON does hereby ordain as follows :
SECTION ONE:
Chapter 13 .08 of the Colton Municipal Code is hereby amended to read as follows:
Sections :
I. PREAMBLE
13 .08 . 100 Purpose and Policy
13 .08.105 Definitions and Abbreviations
11. GENERAL PROVISIONS
13 .08 .200 Administration
13 .08.201 Permit Required
13 .08 .202 Design and Construction of Sewer Service Laterals 13 .08 .203 Responsibility for Sewer Service Lateral Installation , Maintenance, and Replacement
13 .08 .204 Responsibility for Removal of Obstructions in Sewer Service Laterals
13.08.205 Authorization for New or Increased Pollutant Discharge or Changes in the Nature of Pollutant Discharges
13 .08.207 Record Keeping
13.08.210 General Discharge Prohibitions
13 .08 .211 Specific Discharge Prohibitions
1
38 Appendix 4 - Operation & Maintenance Program
Appendix 4.1 – Sewer System Map (Excerpt from City GIS System)
Equipment Type Quantity Notes
CCTV Van 1 Purchased and expected delivery July 2025
Combination Vactor Trucks 2 Used for cleaning and spill recovery Service Trucks 2 Equipped for field maintenance
Stand-by Emergency Truck 1 Equipped for after-hours and emergency spill response Spill Response Trailer 1 Inspected annually; contains PPE and tools Backhoe 1 Used for excavation and emergency repairs
4" Godin Bypass Pump 1 Portable pump for bypass operations Push Camera 1 Portable camera for inspecting laterals and tight spaces Last Upated June 2025
City of Colton Sewer System Operation & Maintenance Equipment Inventory List
Item Description Purpose/Use Storage Location
Bypass hoses and nozzles
For temporary bypass and vactor
operations Q-hut located at the city’s Water Reclamation Facility Manhole covers and rings Replacement for damaged components Q-hut located at the city’s Water Reclamation Facility Pump seals and spare parts Life station maintenance Q-hut located at the city’s Water Reclamation Facility Mobile Generators Backup power and site lighting support Q-hut located at the city’s Water Reclamation Facility PPE and absorbent materials Worker safety and initial spill containment Q-hut located at the city’s Water Reclamation Facility & Spill Response Trailer
VCP & PVC Pipe
Repairing pipe segments due to fractures,
root intrusions, etc. Q-hut located at the city’s Water Reclamation Facility Pipe repair couplings/clamps Routine & Emergency line repairs Q-hut located at the city’s Water Reclamation Facility Last Updated June 2025
City of Colton Sewer System Operation & Maintenance Critical Spare Parts List
39 Appendix 5 - Design & Performance Provisions
Created: 2025-05-06 09:54:27 [EST]
(Supp. No. 38)
15.04.010 Codes adoption.
The 2022 California Building Code, incorporating the "International Building Code, Volumes 1 and 2", 2021 Edition, including all appendices thereto; the 2022 California Residential Code, incorporating the "International Residential Code", 2021 Edition, including all appendices thereto; the 2022 California Mechanical Code, incorporating the "Uniform Mechanical Code", 2021 Edition; including all appendices thereto; the 2022 California Plumbing Code, incorporating the "Uniform Plumbing Code", 2021 Edition, including all appendices thereto; the 2022 California Electrical Code, incorporating the " National Electrical Code ", 2014 Edition; including all annexes thereto; 2022 California Green Building Standards Code; are hereby adopted by reference in their entirety and amended in Chapters 15.06, 15.07, 15.08, 15.09, 15.10, 15.11, 15.12, and 15.13, herein, shall comprise the Building and Construction Regulations of the City of Colton.
(Ord. No. O-15-19, § 3, 11-19-2019; Ord. No. O-14-22, § 3, 12-6-2022)
40 Appendix 6 – SERP
City of Colton
Water Reclamation
Facility
1201 S. Rancho Dr.
Colton, CA 92324
(909) 370-6128
Original - June 2009
Revised June 1, 2023
Spill Emergency Response Plan
Table of Contents
1.0 Introduction......................................................................................................................1
1.1 Purpose and Scope..........................................................................................................1
1.2 Regulatory Framework ..................................................................................................1
1.3 Objectives........................................................................................................................2
2.0 Spill Notification Procedures.........................................................................................2
2.1 Primary Responder Notification....................................................................................2
2.1.1 Initial Detection and Reporting:.....................................................................2
2.1.2 Activation of Spill Response Plan: ................................................................3
2.1.3 Notification of Primary Responders: .............................................................3
2.1.4 Continuous Communication: .........................................................................3
2.2 Local Officials Notification ...........................................................................................3
2.2.1 Initial Assessment and Reporting: .................................................................3
2.2.2 Notification of Local Officials:......................................................................3
2.2.3 Documentation:..............................................................................................4
2.3 Notification of Potentially Affected Entities ................................................................4
2.3.1 Notification of Water Suppliers:....................................................................4
2.3.2 Notification of Neighboring Municipalities: .................................................4
2.3.3 Ongoing Communication and Coordination:.................................................4
2.3.4 Documentation and Follow-Up: ....................................................................5
3.0 Compliance with Notification, Monitoring, and Reporting Requirements...........5
4.0 Spill Response Procedures.............................................................................................9
4.1 Roles and Responsibilities...........................................................................................10
4.2 Initial Response and Spill Containment......................................................................12
4.2.1 Immediate Action.........................................................................................12
4.2.2 SSO Classification .......................................................................................12
4.2.3 Private Property SSO...................................................................................12
4.2.4 Flow Volume Estimation .............................................................................13
4.2.5 Mobilization of Resources...........................................................................13
4.2.6 Routing Calls and Coordination...................................................................13
4.2.7 Containment Measures.................................................................................13
4.2.8 Documentation and Initial Reporting...........................................................13
4.3 Emergency System Operations....................................................................................14
4.3.1 Traffic and Crowd Control...........................................................................14
4.3.2 Coordination with Utility Agencies.............................................................14
4.4 Public Health and Environmental Protection .............................................................15
4.4.1 Immediate Public Health Protection Measures............................................15
4.4.2 Environmental Containment and Mitigation: ..............................................16
5.0 Spill Area Cleanup and Remediation ........................................................................17
5.1 Removal of Sewage......................................................................................................17
5.2 Cleaning and Disinfection............................................................................................17
5.3 Remediation of Impacted Areas..................................................................................17
Spill Emergency Response Plan
6.0 Technologies, Practices, and Equipment...................................................................18
6.1 Sewer Mapping and Visualization Tools....................................................................18
6.2 Spill Containment and Recovery Technologies.........................................................21
6.3 Best Management Practices.........................................................................................22
6.4 Interagency Coordination.............................................................................................22
7.0 Post-Spill Assessment and Reporting.........................................................................23
7.1 Post-Spill Evaluation....................................................................................................23
7.2 Lessons Learned and Updates.....................................................................................23
8.0 Training and Preparedness .........................................................................................23
8.1 Training Program..........................................................................................................23
8.2 Plan Review and Updates............................................................................................24
LIST OF TABLES
Table 3-1 Spill Category 1 Summary of Notification, Monitoring, and Reporting Requirements
Table 3-2 Spill Category 2 Summary of Notification, Monitoring, and Reporting Requirements
Table 3-3 Spill Category 3 Summary of Notification, Monitoring, and Reporting Requirements
Table 3-4 Spill Category 4 Summary of Notification, Monitoring, and Reporting Requirements
Table 3-5 City Owned and/or Operated Lateral Spills Summary of Notification, Monitoring, and Reporting Requirements
Table 4-1 Roles and Responsibilities
Spill Emergency Response Plan
LIST OF FIGURES
Figure 4-1 Sewage Spill Sign – English
Figure 4-2 Sewage Spill Sign - Spanish
Figure 6-1 City Boundary Map
Figure 6-2 City of Colton Sewer Lines (Partial)
Figure 6-3 City of Colton Manhole and Seer Lines (Partial)
APPENDICES
A-1 SSO Report Form
A-2 SSO Volume and Rate Estimate Calculations
A-3 Sewer Overflow Response Plan Flow Chart
A-4 SERP Sampling SOP
A-5 SERP Confidential Call Out List
A-6 Notification, Monitoring, Reporting and Recordkeeping Requirements
Spill Emergency Response Plan
1 June 2023
1.0 Introduction
1.1 Purpose and Scope
The primary purpose of the Spill Emergency Response Plan (SERP) is to provide written guidelines that ensure prompt detection and response to spills to reduce spill volumes and collect information for prevention of future spills.
The SERP applies to the Water Reclamation Facility, pumping stations, and associated infrastructure operated by City of Colton. The plan covers routine and non-routine operations that involve the handling, treatment, and transport of wastewater, including but not limited to daily treatment processes, maintenance activities, pipeline repairs, and emergency response procedures.
This plan encompasses all geographical areas within the jurisdiction of the City of Colton, including the treatment plant located at 1201 S. Rancho Ave., Colton, CA 92324, and the entirety of the wastewater collection system, including the City of Grand Terrace’s wastewater collection system.
The plan applies to all personnel involved in the operation, maintenance, and emergency response activities, including the Water and Wastewater Operations Manager, Wastewater Utilities Supervisor, Collections Supervisor, Field Technicians, Environmental Compliance Inspectors, and contracted emergency response teams. All personnel covered by this plan must be trained and certified in spill response procedures, and regular drills will be conducted to ensure preparedness.
1.2 Regulatory Framework
This Spill Emergency Response Plan is developed in compliance with the following laws, regulations, and orders that govern spill response and reporting:
• Clean Water Act (CWA) - Federal law establishing the basic structure for regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface waters.
• California Water Code - State law governing water rights, water quality, and water management, including provisions related to spill response and reporting requirements.
• State Water Resources Control Board General Order No. WQ 2022-0103- DWQ - Establishes the requirements for Sewer System Management Plans (SSMPs), including procedures for spill notification, monitoring, and reporting. • California Health and Safety Code - Includes provisions related to public health and safety in the context of hazardous spills and environmental contamination.
All spill incidents must be reported in accordance with these laws and regulations, ensuring timely notification to the appropriate regulatory agencies and affected entities.
Spill Emergency Response Plan
2 June 2023
Documentation and monitoring activities are required to comply with the reporting standards set forth in these legal frameworks.
1.3 Objectives
The City recognizes its responsibility in protecting the public health and the environment.
This SERP is designed to achieve the following key objectives:
• Protect Public Health - Ensure the safety and well-being of the public by preventing exposure to hazardous substances resulting from spills; • Minimize Environmental Impact - Protect natural resources and minimize the adverse effects of spills on the environment, particularly water bodies, soil, and wildlife;
• Ensuring Compliance with Regulatory Requirements - Adhere to all applicable federal, state, and local regulations related to spill response, notification, and reporting;
• Ensuring Effective Spill Response - Provide a coordinated and efficient response to spill incidents to mitigate damage and facilitate rapid recovery; and • Enhancing Preparedness and Continuous Improvement - Regularly review and improve the Spill Emergency Response Plan to adapt to changing conditions and enhance overall preparedness.
2.0 Spill Notification Procedures
This section outlines the procedures for promptly notifying all relevant parties in the event of a spill. It details the steps for alerting primary responders, local officials, regulatory agencies, and other potentially affected entities to ensure a swift and coordinated response.
2.1 Primary Responder Notification
2.1.1 Initial Detection and Reporting:
• When signs of spills, such as unusual odors or flooding, are observed, the public can report these directly to the police or fire departments. During regular business hours, a receptionist directs these calls following the Overflow Response Plan Flowchart. Outside regular hours, including weekends, an on-call emergency service routes these calls to the appropriate on-call personnel. Upon receipt of these reports, the police or fire departments mobilize the necessary response teams from the relevant agencies. The entire process of information flow is outlined in the Process Flow Diagram in Appendix A-3.
• Whenever a spill is detected, the person discovering it—often collections staff— must immediately contact the Spill Response Supervisor (SRS) at (909) 376-4233.
Reports from non-City employees are also taken, with City staff gathering critical information like the spill's location and characteristics. The initial report to the SRS must detail the spill’s location, estimated size and type, any immediate threats to public safety or the environment, and steps taken for initial containment.
Spill Emergency Response Plan
3 June 2023
• In any event where the SRS is unavailable or further assistance is required, Sanitary Sewer Overflow (SSO) responders may refer to the City’s Confidential Call Out List (Appendix A-5)
2.1.2 Activation of Spill Emergency Response Plan:
• Upon receiving the notification, the SRS will activate the (SERP). • The SRS will assess the severity of the spill and determine the appropriate level of response required.
2.1.3 Notification of Primary Responders:
• The SRS will immediately notify the primary response teams, comprised of the entire collection system operators. This notification will be carried out using a multi-channel approach, including phone calls and text alerts. • The notification will include specific instructions on where to report, the nature of the spill, any known hazards, and any preliminary response actions that need to be taken.
2.1.4 Continuous Communication:
• The SRS will maintain ongoing communication with the primary responders throughout the response effort, providing updates as more information becomes available and as the situation evolves.
• The SRS will also coordinate with external agencies (e.g., fire department, local emergency services) if the situation warrants their involvement.
2.2 Local Officials Notification
2.2.1 Initial Assessment and Reporting:
• Once a spill is detected and the primary response team is notified, the SRS will assess the spill to determine its potential impact on public health, the environment, and local infrastructure.
• Based on this assessment, the SRS will initiate the notification process for local officials and regulatory agencies.
2.2.2 Notification of Local Officials:
• San Bernardino County Department of Public Health: The SRS will immediately contact the San Bernardino County Department of Public Health to report any spill that may pose a risk to public health, particularly if it involves hazardous substances or affects drinking water sources. o Contact information: (800) 442-2283.
o Reporting timeframe: within 1 hour of spill detection. • City/County Emergency Management Office: The SRS will notify the City of Colton Police Department (PD), the City of Colton Public Works Department, and/or the San Bernardino County Office of Emergency Services (OES) to coordinate any necessary public safety measures, such as evacuations or road closures.
Spill Emergency Response Plan
4 June 2023
o City of Colton PD contact information: (909) 370-5000. o City of Colton Public Works Department contact information: (909) 370- 5099.
o San Bernardino County OES contact information: (909) 356-3998. o Reporting timeframe: within 1 hour of spill detection. • City of Grand Terrace: The SRS will contact the City of Grand Terrace Public Works Department if the spill occurs within the City of Grand Terrace. o Contact information: (909) 824-6621.
o Reporting timeframe: within 2 hour of spill detection. • Local Fire Department: If the spill involves flammable or hazardous materials, the SRS will notify the Local Fire Department for immediate response and containment support.
o Contact information: (909) 370-5100.
o Reporting timeframe: within 30 minutes of spill detection.
2.2.3 Documentation:
• The SRS will document all notifications, including the time of contact, the person or agency notified, and any instructions or feedback received.
This process ensures that all necessary local officials and regulatory agencies are notified in a timely manner, with clear communication and proper documentation to comply with legal requirements and support an effective spill response.
2.3 Notification of Potentially Affected Entities
2.3.1 Notification of Water Suppliers:
• City of Colton Water Utility: The SRS will immediately contact the City of Colton Water Utility if the spill could affect the city's water supply, such as contamination of groundwater or surface water sources. The notification will include the location of the spill, the type of contaminant, and any measures being taken to protect the water supply. Contact: (909) 370-6140. • Regional Water Suppliers: If the spill has the potential to impact regional water sources, such as the Santa Ana River or regional aquifers, the SRS will notify neighboring water suppliers, such as the San Bernardino Valley Municipal Water District. The notification will include the potential impact area and any collaborative efforts required to prevent contamination
2.3.2 Notification of Neighboring Municipalities:
• If the spill is near the city limits or has the potential to affect neighboring areas, the SRS will contact the City of Grand Terrace, City of Riverside, or the City of Rialto.
2.3.3 Ongoing Communication and Coordination:
• The SRS will maintain ongoing communication with all notified entities throughout the spill response, providing updates as more information becomes available.
Spill Emergency Response Plan
5 June 2023
2.3.4 Documentation and Follow-Up:
• The SRS will document all notifications, including the time of contact, the person or agency notified, and the details of the information provided. • After the spill is contained and the immediate response is completed, the SRS will follow up with all affected entities to provide a summary of the incident, the effectiveness of the response, and any additional steps that may be needed.
3.0 Compliance with Notification, Monitoring, and Reporting Requirements
This section provides a summary of notification monitoring, and reporting requirements, by spill category and for City-owned and/or operated laterals as required in Attachment E1 of General Order No. WQ 2022-0103-DWQ, for quick reference purpose only. Appendix A-6 contains detailed descriptions of the requirements and should be referred to in order to ensure full compliance. Additionally, the City has established Sampling Standard Operating Procedures (SOP), located in Appendix A-4, for use in spill-specific sampling.
Spill Emergency Response Plan
6 June 2023
Spill Category 1: Spills to Surface Waters
Spill
Requirements
Due Method
Notification
Within (2) hours of the Enrollee’s knowledge
of a Category 1 spill of 1,000 gallons or greater,
discharging or threatening to discharge to
surface waters:
Notify the California Office of Emergency
Services and obtain a notification control
number.
California Office of
Emergency
Services at (800)
852-7550
(Section 1 of
Appendix A-6)
Monitoring
• Conduct spill-specific monitoring;
• Conduct water quality sampling of the
receiving water within 18 hours of initial
knowledge of spill of 50,000 gallons or
greater to surface waters.
(Section 2 of
Appendix A-6)
Reporting
• Submit Draft Spill Report within three (3)
business days of the Enrollee’s knowledge
of the spill;
• Submit Certified Spill Report within 15
calendar days of the spill end date;
• Submit Technical Report within 45
calendar days after the spill end date for a
Category 1 spill in which 50,000 gallons or
greater discharged to surface waters; and
(Section 3.1 of
Appendix A-6)
Table 3-1 Spill Category 1 Summary of Notification, Monitoring, and Reporting Requirements
Spill Emergency Response Plan
7 June 2023
Spill Category 2: Spills of 1,000 Gallons or Greater That Do Not Discharge to Surface Waters
Spill
Requirements Due Method
Notification
Within two (2) hours of the Enrollee’s
knowledge of a Category 2 spill of 1,000
gallons or greater, discharging or threatening
to discharge to waters of the State:
Notify California Office of Emergency
Services and obtain a notification control
number.
California Office of
Emergency
Services at: (800)
852-7550
(Section 1 of
Appendix A-6)
Monitoring Conduct spill-specific monitoring. (Section 2 of Appendix A-6)
Reporting
• Submit Draft Spill Report within three
(3) business days of the Enrollee’s
knowledge of the spill;
• Submit Certified Spill Report within 15
calendar days of the spill end date; and
• Submit Amended Spill Report within 90
calendar days after the spill end date.
(Section 3.2 of
Appendix A-6)
Table 3-2 Spill Category 2 Summary of Notification, Monitoring, and Reporting Requirements
Spill Category 3: Spills of Equal or Greater than 50 Gallons and Less than 1,000 Gallons That Does Not Discharge to Surface Waters
Spill
Requirements Due Method
Notification Not Applicable Not Applicable
Monitoring Conduct spill-specific monitoring. (Section 2 of Appendix A-6)
Reporting
• Submit monthly Certified Spill Report to
the online CIWQS Sanitary Sewer
System Database within 30 calendars
days after the end of the month in which
the spills occur; and
• Submit Amended Spill Reports within
90 calendar days after the Certified
Spill Report due date.
(Section 3.3 and
3.5 of Appendix A6)
Table 3-3 Spill Category 3 Summary of Notification, Monitoring, and Reporting Requirements
Spill Emergency Response Plan
8 June 2023
Spill Category
4:
Spills Less Than 50 Gallons That Do Not Discharge to
Surface Waters
Spill
Requirements Due Method
Notification Not Applicable Not Applicable
Monitoring Conduct spill-specific monitoring. (Section 2 of Appendix A-6)
Reporting
• If, during any calendar month,
Category 4 spills occur, certify
monthly, the estimated total spill
volume exiting the sanitary sewer
system, and the total number of all
Category 4 spills into the online
CIWQS Sanitary Sewer System
Database, within 30 days after the
end of the calendar month in which
the spills occurred.
• Upload and certify a report, in an
acceptable digital format, of all
Category 4 spills to the online
CIWQS Sanitary Sewer System
Database, by February 1st after the
end of the calendar year in which the
spills occur.
(Section 3.4, 3.6,
3.7 and 4.4 of
Appendix A-6)
Table 3-4 Spill Category 4 Summary of Notification, Monitoring, and Reporting Requirements
Spill Emergency Response Plan
9 June 2023
City Owned and/or Operated Lateral Spills That Do Not Discharge to Surface Waters
Spill
Requirements Due Method
Notification
Within two (2) hours of the City’s
knowledge of a spill of 1,000 gallons or
greater, from a City owned and/or operated
lateral, discharging or threatening to
discharge to waters of the State:
Notify California Office of Emergency
Services and obtain a notification control
number.
Not applicable to a spill of less than 1,000
gallons.
California Office
of Emergency
Services at: (800)
852-7550
(Section 1 of
Appendix A-6)
Monitoring Conduct visual monitoring. (Section 2 of
Appendix A-6)
Reporting
• Upload and certify a report, in an
acceptable digital format, of all lateral
spills (that do not discharge to a surface
water) to the online CIWQS Sanitary
Sewer System Database, by February
1st after the end of the calendar year in
which the spills occur.
• Report a lateral spill of any volume that
discharges to a surface water as a
Category 1 spill.
(Sections 3.6, 3.7
and 4.4 of
Appendix A-6)
Table 3-5 City Owned and/or Operated Lateral Spills Summary of Notification, Monitoring, and Reporting Requirements
4.0 Spill Response Procedures
This section outlines the essential procedures for managing a spill, ensuring a swift and effective response to protect public health, minimize environmental impact, and maintain regulatory compliance. It covers the initial containment actions, emergency system operations during a spill, and steps to mitigate and remediate any adverse effects on public health and the environment. These guidelines are designed to ensure a coordinated and efficient response to spills, safeguarding both the community and natural resources.
Spill Emergency Response Plan
10 June 2023
4.1 Roles and Responsibilities
The primary responsibilities of each employee in the spill response team are summarized in the following table. Additional details of the responsibilities are covered in the sections that follow.
Title
Role during
Spill
Response
Responsibilities Contact
Information
Collections
Systems
Maintenance
Supervisor
Spill
Response
Supervisor
(SRS)
Oversees the entire spill response
operation, including initial assessment,
notification, containment coordination,
and regulatory communication. Ensures
compliance. Completes Sanitary Sewer
Overflow Report (field form).
(909) 376-4233
Any
Collections
Systems
Maintenance
Staff
First
Responder
Conducts immediate spill assessment,
initiates containment measures, secures
area, and notifies the SRS.
(909) 376-4233
(909) 835-9785
Collections
Systems
Maintenance
Staff
Operations
Team
Executes physical containment, cleanup,
and remediation under SRS's direction.
Uses spill response equipment and
techniques, coordinates with emergency
responders.
(909) 835-9785
Water/
Wastewater
Operations
Manager
Incident
Commander
Authorizes City staff or contractors to
initiate and carry out spill response
actions. Acts as the primary point of
contact with the Director, City Manager,
and other key municipal officials.
(909) 953-5038
Environmental
Compliance
Inspector
(G&G)
Environmental
Compliance
Specialist
Determines necessary environmental
sampling, leads investigations to identify
sources and causes of spills, ensures
regulatory compliance, and reports
findings.
(951) 346-8233
Table 4-1 Roles and Responsibilities
Spill Response Supervisor (SRS): As the primary authority during such incidents, the SRS is responsible for initiating and overseeing the implementation of the Spill Emergency Response Plan, ensuring efficient coordination of spill control and cleanup efforts. This includes estimating the official spill volume, directing resources, and maintaining continuous communication with both the response team and higher management, such as the Wastewater Reclamation Manager or Director. The SRS also handles all regulatory
Spill Emergency Response Plan
11 June 2023
notifications, ensuring compliance with state, county, and local requirements, and oversees the completion of the Sanitary Sewer Overflow Report, Located in Appendix A-1.
First Responder: The First Responder in the City of Colton is critical in managing the initial stages of an SSO. Upon arrival at the spill site, their primary duty is to safeguard public health and safety by taking immediate and decisive actions. This involves conducting a rapid assessment of the spill to understand its nature and potential impacts, initiating containment measures to control the spread of the spill, and securing the area to prevent public access. Additionally, the First Responder is tasked with ensuring that the SRS is promptly notified about the incident to mobilize further spill response resources and expertise. This role is essential for laying the groundwork for a timely and effective response, aimed at minimizing the risks and environmental impact associated with the SSO. Upon arrival at a SSO, the first responder will:
• Identify the reason for the SSO, such as a blockage in the sewer line, a pipeline rupture, or a mechanical or electrical malfunction at a pump station. • Identify and request, if necessary, additional personnel, materials and equipment to minimize the impact of the SSO;
• Restrict public entry to the spill area; and
• If feasible, implement immediate measures to halt the overflow.
Operations Team: The Operations Team is tasked with the hands-on management of spill incidents, carrying out physical containment, cleanup, and remediation under the guidance of the SRS. Their responsibilities include deploying and managing spill response equipment, implementing effective containment strategies to prevent environmental spread, and conducting thorough cleanup processes to remove contaminants. Post-cleanup, the team also engages in remediation efforts to restore affected areas and prevent long-term environmental damage. In addition to these duties, they coordinate closely with emergency responders to ensure a comprehensive and safe response, maintain detailed records of all actions taken for compliance and review purposes, and participate in regular training to enhance their readiness for future incidents.
Incident Commander: The Incident Commander holds a pivotal role in overseeing and managing all aspects of spill response operations. Authorized to mobilize City staff and contractors, the Incident Commander orchestrates the execution of all spill response actions, ensuring that efforts are swift, effective, and compliant with municipal and environmental standards. As the primary liaison between the response team and senior municipal officials, including the Director and City Manager, the Incident Commander communicates key updates, strategizes response efforts, and coordinates with other essential municipal departments to maintain a unified approach to emergency management.
This role is critical not only in the immediate containment and mitigation of the spill but also in maintaining transparency and accountability throughout the duration of the response.
Spill Emergency Response Plan
12 June 2023
Environmental Compliance Specialist: This specialist is responsible for determining the necessary environmental sampling required to assess the extent and impact of the spill accurately. They lead investigations to pinpoint the sources and causes of spills, utilizing their expertise to gather evidence and analyze data. A key part of their role involves ensuring that all spill response actions meet local, state, and federal regulatory standards.
The Environmental Compliance Specialist also compiles and reports findings to both internal and external stakeholders, providing detailed updates and recommendations to prevent future occurrences. Their work is crucial for maintaining the city’s compliance with environmental laws and for helping to mitigate environmental risks associated with spills.
4.2 Initial Response and Spill Containment
4.2.1 Immediate Action
As soon as a spill is detected, the first responder on the scene assesses the situation and initiates containment measures to prevent the spill from entering waterways. This includes deploying absorbent materials, containment booms, and temporary barriers.
4.2.2 SSO Classification
• Upon arrival at the spill site, the first responder conducts an initial assessment to gather key data such as the volume of the spill, its origin, and its trajectory towards water bodies or drainage systems.
• Category 1 Spill: Classify as Category 1 any spill, regardless of volume, that results in a discharge to surface water or a drainage conveyance system leading to surface water, where the sewage is not fully captured and returned to the sewer system or disposed of properly. This includes spills from City-owned laterals discharging into surface waters.
• Category 2 Spill: Classify as Category 2 any spill of 1,000 gallons or more that does not discharge into surface water, including those originating from lateral failures due to blockages in the sewer system.
• Category 3 Spill: Classify as Category 3 any spill of 50 to 999 gallons that does not discharge into surface water and originates from the sanitary sewer system, including lateral spills.
• Category 4 Spill: Classify as Category 4 any spill less than 50 gallons that does not discharge into surface water and is due to a failure or blockage in the sewer system, including lateral spills.
4.2.3 Private Property SSO
The City is committed to addressing all SSOs within its service area. Should an SSO be traced back to a sewer lateral or septic system on private property, the City will provide support in controlling and containing the spill to prevent wastewater from entering storm drains or spillways. The property owner will be notified of the blockage and informed about their responsibilities under the City’s Private Lateral Sewer Policy. They will be required to clear the blockage. If the SSO originates from the sewer trunk line, the response crew
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13 June 2023
will rectify the issue. Regardless of the source, the City will document and report each spill as mandated by Section 4.4.8 of this SERP.
4.2.4 Flow Volume Estimation
Initial flow volume estimates are determined through on-site assessments, utilizing the expert judgment of professionals and adhering to guidelines from reputable engineering firms and municipal agencies. The Best Practices Guidelines found in Appendix A-2 are applied to establish preliminary overflow volumes. Final volume figures are verified during the cleanup and recovery process, based on the amount of sewage returned to the sewer system and assessments of unrecovered volumes.
4.2.5 Mobilization of Resources
The first responder immediately notifies the SRS. The SRS then mobilizes the necessary labor, materials, tools, and equipment to address and contain the spill. This includes deploying vactor trucks, which are crucial for quickly removing liquids and sludge from affected areas, thereby facilitating more containment and cleanup. Additionally, the coordination involves the delivery of other specialized equipment for pumping and cleanup, and any required personal protective equipment (PPE) for the response team.
4.2.6 Routing Calls and Coordination
• During Normal Business Hours: Calls related to spills received by the police or a designated receptionist following the protocols outlined in the Overflow Response Plan Flowchart immediately routs fire departments to the SRS. • After Business Hours and Weekends: Calls received by the on-call emergency answering service are forwarded to the on-call SRS or the appropriate personnel responsible for spill response. This ensures that there is no delay in addressing the spill regardless of the time of day.
4.2.7 Containment Measures
The response team utilizes strategic placement of containment tools to block any pathways that might allow the spill to reach state waters. Vactor trucks play a pivotal role here by quickly removing any spill material and contaminated water, preventing further spread and facilitating the immediate start of cleanup operations. For larger or more hazardous spills, additional measures such as creating diversion ditches or installing plug devices in nearby drainage areas may be employed.
4.2.8 Documentation and Initial Reporting
All actions taken during the initial response are thoroughly documented by the on-site response coordinator using photos, written notes, video recordings, and/or audio recordings, based on what is most practical and feasible at the time. This documentation includes but is not limited to time of notification, actions taken, resources used, and initial estimates of the spill size and impact. Crucially, all findings and initial response actions are recorded on the SSO Report Form, which is Appendix A-1 of the SERP. This form ensures
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that all relevant data is systematically captured and reported, aiding in regulatory compliance and future response evaluations.
4.3 Emergency System Operations
Maintaining emergency system operations during a SSO involves coordinated efforts in traffic control and seamless collaboration with other utility agencies. This section outlines the structured response based on the spill's volume to ensure public safety and minimize disruption.
4.3.1 Traffic and Crowd Control
1. Spills Less Than 1,000 Gallons:
• Traffic Cones: Set up traffic cones to redirect vehicular and pedestrian traffic away from the spill area.
• Personnel Deployment: Deploy staff personnel to actively manage and control traffic and pedestrian movements, ensuring safety and minimizing the risk of public exposure to the spill.
2. Spills Ranging from 1,000 to 10,000 Gallons:
• Mutual Aid Coordination: Contact Mutual Aid Contract cities as necessary for additional support and resources.
• Lane Closures: Execute strategic lane closures to control traffic flow and prevent access to contaminated areas.
• Facility Access: Close any affected entrances or exits to both public and private facilities to secure the area.
• Signage: Install appropriate signage indicating lane closures and marking contaminated areas to inform and guide the public.
• Safety Barriers: Deploy caution tape and barricades to ensure pedestrian safety and prevent access to contaminated zones.
3. Spills Exceeding 10,000 Gallons:
• Situation Assessment: Conduct a thorough assessment of the spill situation to understand the extent and implications of the overflow. • Extended Mutual Aid: Engage Mutual Aid contract cities for substantial support in managing the larger-scale incident.
• Law Enforcement Involvement: Inform local police and sheriff’s departments if substantial road closures and traffic control measures are needed, ensuring law enforcement is integrated into the response strategy.
• Public Communication: Delegate responsibilities to Mutual Aid team members for public communication regarding hazards. Utilize signage extensively to alert the public about potential health and safety risks.
• Physical Barriers: Erect barricades, cones, and caution tape to block public access to hazardous areas, securing the perimeter around the spill site.
4.3.2 Coordination with Utility Agencies
In all scenarios, coordination with other utility agencies is crucial. This includes:
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• Communication Protocols: Establish and maintain clear communication channels with water, gas, and electric utilities to manage any spill-related disruptions to services.
• Joint Response Efforts: Work jointly with these agencies to assess the impact on their infrastructure and coordinate response efforts effectively. • Resource Sharing: Utilize agreements for sharing resources such as barricades, signs, and emergency response personnel to enhance the capabilities of the responding teams.
4.4 Public Health and Environmental Protection
Effective management of public health and environmental protection during a SSO is critical to minimize the impacts on the community and natural resources. This section outlines the steps necessary to address these impacts efficiently.
4.4.1 Immediate Public Health Protection Measures
• Public Notifications: Promptly inform the public about the spill, including details about affected areas and recommended safety precautions through various communication channels such as local media, social media, and community alert systems.
• Access Restrictions: Implement immediate restrictions to prevent public access to affected areas, using barriers, signs, and on-site personnel to enforce these restrictions.
• Temporary Signage: Install signage and barriers in areas accessible to the public throughout the cleanup and disinfection period. Post bilingual signs (in English and Spanish) in the affected area to warn the public about the sewage release. At a minimum, the signs should prominently display the words "Raw Sewage" (refer to the examples on the following page). These warning signs must remain in place until they are authorized for removal by the San Bernardino County Department of Environmental Health Division or RWQCB staff, or until sample results confirm that background levels (as determined by upstream samples) have been restored.
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Figure 4-1 Sewage Spill Sign - English
Figure 4-2 Sewage Spill Sign - Spanish
4.4.2 Environmental Containment and Mitigation:
• Containment Actions: Deploy physical barriers and diversion tactics to prevent the spread of contaminants into unaffected water bodies and storm drains.
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• Water Quality Monitoring: Initiate immediate water sampling and continuous monitoring to assess the extent of contamination and the effectiveness of containment measures.
5.0 Spill Area Cleanup and Remediation
5.1 Removal of Sewage
The procedures for removing sewage from the drainage conveyance system and affected areas focus on immediate and thorough removal to minimize environmental impact:
• Sewage Extraction: Utilize the City's vactor trucks to extract sewage from the affected areas and the drainage system. These specialized vehicles are equipped to handle both liquid and solid waste, ensuring a comprehensive cleanup. • Debris Management: Solids and debris are flushed from the area using highpressure water hoses or combination trucks, then collected and hauled away for proper disposal.
• Water Containment: All flush water used during the cleaning process is contained and collected, preventing any runoff into unaffected areas, and is properly disposed of according to environmental regulations.
5.2 Cleaning and Disinfection
Guidelines for cleaning and disinfecting the spill area are designed to restore sanitation while safeguarding the environment:
• Site Securing: Secure the SSO site immediately to prevent public access until cleanup and disinfection are complete. Signage is posted as required to inform the public about health and safety risks.
• Chemical Use: Disinfect the area using liquid bleach (sodium hypochlorite) or other suitable disinfectants. Chlorine pellets may also be used for targeted disinfection, ensuring that their application does not breach NPDES permit requirements, particularly concerning chlorine levels in waterways. • Disinfection Practices: Apply disinfectants carefully to ensure adequate contact time for effective sanitation. Special attention is given to avoid overuse and environmental contamination.
• Deodorization: Treat the area with suitable deodorizing agents to eliminate any odors resulting from the spill.
5.3 Remediation of Impacted Areas
Steps are taken to remediate any environmental damage caused by the spill, including restoration of soil and water quality:
• Ponding Management: Where sewage has resulted in ponding, the area is pumped dry, and all residual sewage is removed to prevent further contamination.
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• Aquatic Environments: If sewage has discharged into a body of water containing fish or aquatic life, refrain from using disinfectants. Instead, immediately contact the appropriate environmental agency for guidance on remediation procedures to ensure the protection of aquatic ecosystems
• Environmental Restoration: Following cleanup and contamination removal, efforts are made to restore the affected soil and water areas to their pre-spill condition. This includes soil remediation techniques and, where necessary, the reintroduction of native plant species to stabilize the area.
6.0 Technologies, Practices, and Equipment
6.1 Sewer Mapping and Visualization Tools
The City of Colton utilizes sophisticated sewer mapping technologies to enhance the management of its sewer and storm drain systems. These tools are integral to both routine operations and emergency response efforts:
• Geographic Information System (GIS): Maintains an up-to-date digital map of all sewer and storm drain systems, accessible in real-time to aid in rapid location identification and infrastructure assessment during spills. • Sewer Atlas: Regularly updated physical maps stored at the RWRF Operations Center and in all sewer collection vehicles, providing reliable access to detailed infrastructure layouts even when digital systems are unavailable. • Mobile Mapping Access: iPads equipped with sewer mapping systems are kept in each collection field truck, ensuring field personnel have immediate access to mapping information during operations.
• City Intranet Availability: Utility maps are available on the City’s intranet, making them accessible to various municipal departments involved in spill management and response.
These mapping tools and systems support the City of Colton by enabling quick decisionmaking and effective action during spill incidents, ultimately reducing environmental risks and improving recovery processes. The next three pages provide examples of the City’s GIS mapping tool.
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Figure 6-1 City of Colton Boundary Map
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Figure 6-2 Colton WRF and Incoming Sewer Line Map
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21 June 2023
Figure 6-3 Manhole and Sewer Line Map (Partial)
6.2 Spill Containment and Recovery Technologies
This section provides an overview of the specialized technologies and equipment employed by the City to expedite the containment and recovery of spills efficiently:
• Vactor Trucks: Utilized for rapid removal of liquids and debris from spill sites, these trucks are essential for initial containment and cleanup operations. • Containment Booms and Barriers: Deployed to encircle and contain spills, especially in water bodies, to prevent the spread of contaminants. • Skimmers and Absorbents: Used to remove oils and other surface contaminants from water, these tools are critical for quick recovery in aquatic environments. • High-Pressure Wash Systems: Employed to cleanse affected surfaces and infrastructure, ensuring thorough decontamination of the spill area.
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• Spill Containment Trailer: The City also maintains a dedicated Spill Containment Trailer, which is fully equipped with all necessary tools for spill response. This trailer serves as a mobile response unit, ready to be dispatched to any spill site, providing immediate access to essential containment and cleanup equipment. This resource ensures that the City is prepared to quickly address and manage spills, minimizing environmental impact and facilitating rapid recovery.
6.3 Best Management Practices
The City has implemented a series of BMPs to prevent spills and ensure an effective response:
• Regular Inspection and Maintenance: Routine checks and maintenance of sewage and drainage systems to identify and rectify potential failure points before they result in spills.
• Enhanced Monitoring: Enhanced monitoring and upkeep of areas prone to higher risks, particularly those with historical issues related to Fats, Oils, and Grease (FOG) accumulation or vandalism.
• Deployment of Smart Covers: Installation of 5 smart covers, installed in known problem areas. These smart covers use technology to provide real-time data on sewage levels, allowing for immediate response before overflow conditions develop. This
• Employee Training Programs: Comprehensive training for all personnel involved in spill response to ensure they are equipped with the knowledge and skills to manage incidents effectively.
• Preventative Infrastructure Upgrades: Investing in the reinforcement of aging infrastructure to reduce the likelihood of spills due to system failures.
6.4 Interagency Coordination
Procedures for coordinating with storm drain agencies and other utility departments are crucial for managing spills effectively, especially when they extend beyond the primary agency’s jurisdiction:
• Immediate Notification: As soon as a spill is identified as extending beyond one jurisdiction, the responsible agency is immediately notified to ensure a coordinated response effort.
• Joint Response Plans: Establishing pre-agreed plans with neighboring jurisdictions and agencies for shared response actions in border areas to expedite containment and cleanup.
• Shared Resources and Information: Utilizing shared resources such as additional containment materials, manpower, and real-time data on spill progression to enhance response efforts.
• Continued Containment: Until the responsible agency arrives, the initial responding team continues containment and cleanup efforts to minimize environmental impact and public health risks.
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23 June 2023
7.0 Post-Spill Assessment and Reporting
Following a spill incident, the City of Colton undertakes a rigorous post-spill assessment and reporting process to evaluate the effectiveness of the response, document all pertinent details, and continuously refine the Spill Emergency Response Plan (SERP). This section outlines the procedures for conducting thorough post-spill evaluations and the process for extracting lessons learned to enhance future responses. This systematic approach ensures accountability, promotes transparency, and fosters an environment of continuous improvement in spill management practices.
7.1 Post-Spill Evaluation
• Assessment Procedures: After each spill, the City of Colton conducts a thorough post-spill evaluation to assess the effectiveness of the response efforts. This includes measuring the speed of response, the adequacy of the containment and cleanup measures, and the overall impact on the environment and public health.
The assessment also reviews the usage and functionality of response equipment and technologies.
• Debriefing Meetings: Within one week of mitigating a sewer spill, a mandatory spill-debriefing meeting is held involving all personnel engaged in the spill response. This meeting aims to discuss and analyze any challenges or issues encountered during each phase of the response, ensuring comprehensive evaluation.
7.2 Lessons Learned and Updates
• Review and Analysis: The post-spill debriefing meetings serve as a critical platform for identifying lessons learned. Discussions focus on what worked well and what could be improved, taking into account feedback from all involved personnel.
• Plan Revisions: Insights gained from these meetings are used to update and enhance the Spill Emergency Response Plan (SERP). This may include updates to response strategies, training programs, equipment needs, and communication protocols.
• Continuous Improvement: Regular updates to the SERP ensure that the City remains well-prepared to handle future spills. These updates reflect new technologies, regulatory changes, and evolving best practices in spill management.
All changes shall be documented on the City’s SSMP Change Log.
8.0 Training and Preparedness
8.1 Training Program
The City of Colton is committed to ensuring that both staff and contractors are fully equipped to execute the Spill Emergency Response Plan (SERP) through comprehensive training programs. These programs are designed to cover all aspects of spill response, from basic orientation to full-scale exercises:
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24 June 2023
• Orientation Exercise: This introductory session provides a brief lecture or overview of the SERP requirements and past experiences. It serves to instruct new employees on the plan specifics and the documentation required during an SSO event.
• Tabletop Exercise: In these simulation exercises, participants discuss a hypothetical SSO scenario without the actual deployment of equipment.
Effectiveness is evaluated based on participant feedback and the subsequent impact on revising plans, procedures, and systems.
• Functional Full Scale Exercise: These exercises simulate an actual spill event to test the practical application of the SERP. Controllers monitor the response, and observers record actions, providing a real-time evaluation of the plan’s objectives, the efficacy of the equipment, response times, and overall resource management.
Training records and event participation are meticulously documented and maintained to ensure ongoing compliance and effectiveness.
8.2 Plan Review and Updates
The SERP is a dynamic document that requires continuous review and updating to remain effective:
• Annual Review: Each year in July, the SERP is thoroughly reviewed to ensure that it accurately reflects the current operational policies and procedures and that all provisions are being actively implemented.
• Plan Maintenance: The SERP, available at the City of Colton Wastewater Treatment Plant Administration Building in both hard copy and electronic formats, is not submitted to state or regional boards but must be accessible for their review during routine inspections.
• Document Revisions: Any deficiencies identified during the annual review or through feedback from training exercises are addressed promptly. Proposed changes are communicated for review and become effective upon approval by the Director of Water and Wastewater.
These structured training and review processes ensure that the City of Colton remains wellprepared to manage SSO events efficiently and in compliance with regulatory standards.
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Appendix A-1
SSO Report Form
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Appendix A-2
SSO Volume and Rate Estimate Calculations
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Appendix A-3
Sewer Overflow Response Plan Flow Chart
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Appendix A-4
SERP Sampling SOP
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29 June 2023
Appendix A-5
SERP Confidential Call Out List
Spill Emergency Response Plan
30 June 2023
Appendix A-6
Notification, Monitoring, Reporting and Recordkeeping
Requirements
A-1
City of Colton
Sanitary Sewer Overflow (SSO) Report Form
Use this form to enter sanitary sewer overflow data for submittal into the State Water Resources Control Board CIWQS SSO Online Database
(https://ciwqs.waterboards.ca.gov)
GENERAL INFORMATION
Name (person completing this form): Phone:
Spill location description (address, cross streets, or GPD coordinates):
SSO DETAILS & CLASSIFICATION
Spill was first discovered or reported to the City at: Date: Time: : am/pm Identify the SSO spill type (See State Order WQ 2022-0103-DWQ Section 5.13.1) and enter below:
Category 1 SSO – Spills of any volume that reach surface water or a drainage conveyance system when the sewage is not fully captured and returned to the sanitary sewer system Category 2 SSO – Spills > than or = to 1,000 gallons that do not reach surface water Category 3 SSO – Spills > than 50 gallons but < than 1,000 gallonsthat do not reach surface water
Category 4 SSO – Spills less than 50 gallons that do not reach surface water Private Sewer Lateral (PSL) SSO – (See State Order WQ 2022-0103-DWQ Section 5.15 and 5.16)
Did any obstacles impede your response or assessment of the reported spill? ☐Yes ☐No (If yes, please describe (e.g., weather, traffic, communications, etc.)
SSO DETAILS & CLASSIFICATION (Continued)
Estimated spill start date/time: Date: T i m e : : am/pm Estimated operator arrival date/time: Date: Time: : am/pm Estimated spill end date/time: Date: Time: : am/pm
☐Building/Structure ☐Street Curb/Gutter ☐Paved Surface ☐Unpaved Surface ☐Storm Drain ☐Surface Water ☐Drainage Channel
☐Storm Water Infiltration/Retention Structure/Field
☐ Other (specify):
Final spill destination (Check all that apply and attach photos of all areas checked):
Did the spill discharge to land? (Includes discharges directly to land, and discharges to a storm drain system or drainage channel that flows to a storm water infiltration/retention structure, field, or other non-surface water location) ☐Yes ☐No (Include photos as needed)
• If Yes, estimated spill volume discharged to land: gallons • Estimated spill volume recovered from discharge to land: (Do not include water used for clean- up): Gallons Did the spill reach the storm drain? ☐Yes ☐No • If Yes, estimated spill volume that reached storm drain : gallons • Estimated spill volume recovered from storm drain: gallons Did the spill reach drainage channel? ☐Yes ☐No
• If Yes, estimated spill volume that reached discharge channel: gallons • Estimated spill volume recovered from drainage channel: gallons Did the spill reach surface waters? ☐Yes ☐No
• If Yes, estimated spill volume and the rate at which the spill reached surface waters:
gallons, gallons per minute
Methods used to estimate spill volumes (Check all that apply. Use Volume Estimation Forms to document spill dimensions, shapes, and other volume estimation information):
☐Eyeball Method ☐Calculations from Spill Dimensions ☐Duration and Flow Rate ☐Open Channel Spill Estimation ☐Drop Bucket Method ☐Calculations Based on Pipe Size ☐Flow from Vent or Pick Holes ☐Flow around Manhole Cover ☐Flow from Manhole w/o a Cover Spill estimated flow rate: gallons per minute Spill appearance point (Check all that apply):
☐Gravity Mainline ☐Inside Building or Structure ☐Manhole ☐Other Sewer System Structure (specify):
Spill cause (Check all that apply)
☐Debris - General ☐Debris – Rags ☐Root Intrusion ☐Debris from Construction ☐Construction Diversion Failure ☐Collection System Maintenance Caused Spill/Damage ☐Damage by Others Not Related to Collection System ☐ Other (specify)
Where did failure occur? (Check all that apply):
☐Gravity Mainline ☐Manhole ☐Inside Building or Structure ☐Other (specify):
Was this spill associated with a storm event? ☐Yes ☐No
Diameter of sewer pipe at the point of blockage or failure: inches
SSO ACTIONS & NOTIFICATIONS
Spill response activities (Check all that apply):
☐Cleaned-up ☐Contained All or Portion of Spill ☐Mitigated Effects of Spill ☐ Restored Flow
☐Returned All of Spill to Sanitary Sewer System ☐Other Enforcement Agency Notified ☐Other (specify):
Spill Response Completion Date:
Spill corrective action taken: (Check all that apply):
☐Added Sewer to Preventive Maintenance Program
☐Adjusted Schedule/Method of Preventive Maintenance
☐Inspected Sewer Using CCTV to Determine Cause
☐Plan Rehabilitation or Replacement of Sewer
☐Repaired Facilities or Replaced Defect
☐Other (specify)
Cal OES NOTIFICATION REQUIREMENTS (As soon as possible but no later than 2 hours after knowledge of spill; and notification can be provided without impeding cleanup or emergency measures)
Cal OES Control Number (required for Spills > than or = 1,000 gallons):
Cal OES Called Date/Time (required for Spills > than or = 1,000 gallons):
Date: Time: : am/pm
Phone Numbers:
• Cal OES – (800) 852-7550
• Santa Ana Regional Water Quality Control Board - (951) 782-4130, FAX (951) 781-6288 • San Bernardino County Public Health - (800) 442-2283
A-2
Spill Volume and Rate Estimate Calculations
Collection System Collaborative Benchmarking Group
Best Practices for Sanitary Sewer Overflow (SSO) Prevention and Response Plan
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Sample Templates for SSO Volume Estimation
Table ‘A’
ESTIMATED SSO FLOW OUT OF M/H WITH COVER IN PLACE
24” COVER 36” COVER
Height of
spout above
M/H rim
H in Inches
SSO FLOW
Q
Min. Sewer
size in which
these flows
are possible
Height of
spout above
M/H rim
H in Inches
SSO FLOW
Q
Min. Sewer
size in which
these flows
are possible In gpm In MGD In gpm In MGD
1/4 1 0.001 1/4 1 0.002
1/2 3 0.004 1/2 4 0.006
3/4 6 0.008 3/4 8 0.012
1 9 0.013 1 13 0.019
1 1/4 12 0.018 1 1/4 18 0.026
1 1/2 16 0.024 1 1/2 24 0.035
1 3/4 21 0.030 1 3/4 31 0.044
2 25 0.037 2 37 0.054
2 1/4 31 0.045 2 1/4 45 0.065
2 1/2 38 0.054 2 1/2 55 0.079
2 3/4 45 0.065 2 3/4 66 0.095
3 54 0.077 3 78 0.113
3 1/4 64 0.092 3 1/4 93 0.134
3 1/2 75 0.107 3 1/2 109 0.157
3 3/4 87 0.125 3 3/4 127 0.183
4 100 0.145 4 147 0.211
4 1/4 115 0.166 4 1/4 169 0.243
4 1/2 131 0.189 4 1/2 192 0.276
4 3/4 148 0.214 4 3/4 217 0.312 6”
5 166 0.240 5 243 0.350
5 1/4 185 0.266 5 1/4 270 0.389
5 1/2 204 0.294 5 1/2 299 0.430
5 3/4 224 0.322 6” 5 3/4 327 0.471
6 244 0.352 6 357 0.514
6 1/4 265 0.382 6 1/4 387 0.558 8”
6 1/2 286 0.412 6 1/2 419 0.603
6 3/4 308 0.444 6 3/4 451 0.649
7 331 0.476 7 483 0.696
7 1/4 354 0.509 7 1/4 517 0.744
7 1/2 377 0.543 7 1/2 551 0.794
7 3/4 401 0.578 8” 7 3/4 587 0.845 10”
8 426 0.613 8 622 0.896
8 1/4 451 0.649 8 1/4 659 0.949
8 1/2 476 0.686 8 1/2 697 1.003
8 3/4 502 0.723 8 3/4 734 1.057
9 529 0.761 9 773 1.113
Collection System Collaborative Benchmarking Group
Best Practices for Sanitary Sewer Overflow (SSO) Prevention and Response Plan
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Table ‘B’
ESTIMATED SSO FLOW OUT OF M/H WITH COVER REMOVED
24” FRAME 36” FRAME
Water
Height
above M/H
frame
H in Inches
SSO FLOW
Q
Min. Sewer
size in which
these flows
are possible
Height of
spout above
M/H rim
H in Inches
SSO FLOW
Q
Min. Sewer
size in which
these flows
In gpm In MGD In gpm In MGD are possible
1/8 28 0.04 1/8 49 0.07
1/4 62 0.09 1/4 111 0.17
3/8 111 0.16 3/8 187 0.27 6”
1/2 160 0.23 1/2 271 0.39
5/8 215 0.31 6” 5/8 361 0.52 8”
3/4 354 0.51 8” 3/4 458 0.66
7/8 569 0.82 10” 7/8 556 0.8 10”
1 799 1.15 12” 1 660 0.95 12”
1 1/8 1,035 1.49 1 1/8 1,035 1.49
1 1/4 1,340 1.93 15” 1 1/4 1,486 2.14 15”
1 3/8 1,660 2.39 1 3/8 1,951 2.81
1 1/2 1,986 2.86 1 1/2 2,424 3.49 18”
1 5/8 2,396 3.45 18” 1 5/8 2,903 4.18
1 3/4 2,799 4.03 1 3/4 3,382 4.87
1 7/8 3,132 4.51 1 7/8 3,917 5.64 21”
2 3,444 4.96 21” 2 4,458 6.42
2 1/8 3,750 5.4 2 1/8 5,000 7.2 24”
2 1/4 3,986 5.74 2 1/4 5,556 8
2 3/8 4,215 6.07 2 3/8 6,118 8.81
2 1/2 4,437 6.39 2 1/2 6,764 9.74
2 5/8 4,569 6.58 24” 2 5/8 7,403 10.66
2 3/4 4,687 6.75 2 3/4 7,972 11.48 30”
2 7/8 4,799 6.91 2 7/8 8,521 12.27
3 4,910 7.07 3 9,062 13.05
3 1/8 9,604 13.83
3 1/4 10,139 14.6
3 3/8 10,625 15.3 36”
3 1/2 11,097 15.98
3 5/8 11,569 16.66
3 3/4 12,035 17.33
3 7/8 12,486 17.98
4 12,861 18.52
4 1/8 13,076 18.83
4 1/4 13,285 19.13
4 3/8 13,486 19.42
Collection System Collaborative Benchmarking Group
Best Practices for Sanitary Sewer Overflow (SSO) Prevention and Response Plan
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Table ‘C’
ESTIMATED SSO FLOW OUT OF M/H PICK HOLE
Height of
spout above
M/H cover
H in Inches
SSO
FLOW
Q
In gpm
Height of
spout above
M/H cover
H in Inches
SSO
FLOW
Q
In gpm
1/8 1.0 5 1/8 6.2
1/4 1.4 5 1/4 6.3
3/8 1.7 5 3/8 6.3
1/2 1.9 5 1/2 6.4
5/8 2.2 5 5/8 6.5
3/4 2.4 5 3/4 6.6
7/8 2.6 5 7/8 6.6
1 2.7 6 6.7
1 1/8 2.9 6 1/8 6.8
1 1/4 3.1 6 1/4 6.8
1 3/8 3.2 6 3/8 6.9
1 1/2 3.4 6 1/2 7.0
1 5/8 3.5 6 5/8 7.0
1 3/4 3.6 6 3/4 7.1
1 7/8 3.7 6 7/8 7.2
2 3.9 7 7.2
2 1/8 4.0 7 1/8 7.3
2 1/4 4.1 7 1/4 7.4
2 3/8 4.2 7 3/8 7.4
2 1/2 4.3 7 1/2 7.5
2 5/8 4.4 7 5/8 7.6
2 3/4 4.5 7 3/4 7.6
2 7/8 4.6 7 7/8 7.7
3 4.7 8 7.7
3 1/8 4.8 8 1/8 7.8
3 1/4 4.9 8 1/4 7.9
3 3/8 50 8 3/8 7.9
3 1/2 5.1 8 1/2 8.0
3 5/8 5.2 8 5/8 8.0
3 3/4 5.3 8 3/4 8.1
3 7/8 5.4 8 7/8 8.1
4 5.5 9 8.2
4 1/8 5.6 9 1/8 8.3
4 1/4 5.6 9 1/4 8.3
4 3/8 5.7 9 3/8 8.4
4 1/2 5.8 9 1/2 8.4
4 5/8 6.9 9 5/8 8.5
4 3/4 6.0 9 3/4 8.5
4 7/8 6.0 9 7/8 8.6
5 6.1 9 8.7
Note: This chart is based on a 7/8 inch diameter pick hole
A-3
FLOW CHART SANITARY SEWER OVERFLOW RESPONSE PLAN SPILL OCCURS/REPORTED DURING REGULAR WORK HOURS SPILL OCCURS/REPORTED DURING NIGHTS AND WEEKENDS Report of Spill Received by Water - Wastewater Department Public Other Source Wastewater Treatment Plant Manager or Lead Operator Directs the Response Team to Investigate the Spill Call SSO Report Form
Response Team Assess and Categorizes SSO (Responds in Accordance with Established Written Procedures) Yes Private Lateral Spill? No Determine Cause & Mitigate (Contain Spill, Secure Area with Barriers & Signs, Prepare Incident/Spill Report Clean-Up & Disinfect Area) Communicates Spill Information Category 1 Spill? Category 2-4 Spill Initial Notification to OES, SB County Health, and RWQCB within 2 hours of spill awareness Certification to RWQCB as soon as possible (but no later than 24-hours) Did Spill Reach a Drainage Channel or Surface Water?
Yes Within 30-Days Yes
Certified e-Report Submitted
Provide Information Regarding Responsibility for Maintaining Lateral and Assist as Needed to Minimize Public Health Risks Initial Report within 3-Business Days Final Certified Report within 15-Days Voluntary
SSO Resolved?
No Yes End of Action - File Report(s) Notify Manager Elevate Response to City Government Level Necessary to Protect Health, Welfare, & Resources as Directed Report of Spill Received by City PD Dispatcher On-Call Wastewater Staff Notified Evaluates Information Received & Responds to the Site No Notify Manager, File Report, End Response Sanitary Spill? Data Input into CIWQS System
No Yes
No Yes Collect Water Samples as Determined by RWQCB
A-4 SERP Spill-Specific Monitoring SOP
1. Purpose
The purpose of this SOP is to outline the procedures for sampling and analyzing water quality in response to sewer spills in the City of Colton. These procedures ensure compliance with regulatory requirements and protect public health and the environment.
2. Scope
This SOP applies to all sewer spill events that may impact surface waters within the City of Colton's jurisdiction. It covers the assessment of spill locations, spill volume estimation, receiving water monitoring, water quality sampling, and analysis.
3. Responsibilities
• Spill Response Supervisor (SRS): Responsible for overseeing the spill response, including coordinating sampling efforts and ensuring compliance with this SOP. • Field Sampling Team: Conducts field sampling according to the procedures outlined in this SOP.
• Environmental Compliance Coordinator: Ensures that all sampling results are documented, reported, and reviewed for compliance with water quality objectives.
4. Spill-Specific Monitoring Requirements
4.1 Spill Location and Spread
• Visual Assessment: The Enrollee (City of Colton) shall visually assess the spill location using photography, GPS, and other best available tools. • Documentation: Document critical spill locations including:
o The system location where the spill originated.
o Entry points into the drainage conveyance system.
o Discharge locations into surface waters, if applicable. o The extent of spill spread and the cleanup location.
4.2 Spill Volume Estimation
• Initial Estimation: Estimate the total spill volume using updated volume estimation techniques, calculations, and documentation for electronic reporting. • Ongoing Updates: Update the estimated spill volume (including recovered volume) as further information becomes available during and after the spill event.
5. Receiving Water Monitoring
5.1 Visual Observations
• Required Observations: For spills discharging to surface waters, the following information must be gathered and documented:
o Estimated spill travel time to the receiving water.
o Estimated spill travel time from the drainage conveyance system to the receiving water.
o Estimated spill volume entering the receiving water.
o Photographic evidence of bank erosion, floating matter, water surface sheen, discoloration, and impact on receiving water.
5.2 Water Quality Sampling and Analysis
• Trigger for Sampling: If a spill results in the discharge of an estimated 50,000 gallons or more into surface waters, the following sampling procedures must be initiated within 18 hours of knowledge of the discharge:
o Sampling Locations:
▪ DCS-001: Before the drainage conveyance system discharges into receiving waters.
▪ RSW-001 (Point of Discharge): Where sewage enters the receiving water.
▪ RSW-001U (Upstream): Upstream of the discharge point to capture ambient conditions.
▪ RSW-001D (Downstream): Downstream of the discharge point where the spill is fully mixed with the receiving water.
o Analytes: Analyze water samples for the following:
▪ Ammonia
▪ Bacterial indicators: Total Coliform, Fecal Coliform, E. coli, and Enterococcus, as applicable.
5.3 Water Quality Analysis Specifications
• Representative Sampling: Ensure that spill monitoring is representative of the event. • Sensitive Methods: Use test methods approved under 40 CFR Part 136, ensuring the minimum detection level meets or is below the criteria for the receiving water pollutant. • Accredited Laboratories: All sample analysis must be performed by laboratories accredited by the Environmental Laboratory Accreditation Program (ELAP).
6. Safety and Access Considerations
• Access Restrictions: If access restrictions or unsafe conditions prevent compliance with sampling requirements, document these restrictions and include them in the required report.
7. Documentation and Reporting
• Spill Documentation: All observations, sampling locations, sample results, and access issues must be thoroughly documented.
• Regulatory Reporting: Report findings to the appropriate regulatory agencies, including any deviations from the standard procedure due to safety or access issues.
8. Review and Updates
• Annual Review: This SOP will be reviewed annually and updated as necessary to reflect changes in regulations, technology, or City procedures.
A-5 SERP Confidential Call Out List
City of Colton Water/Wastewater Department
Name Title Phone No. Other
Bassam Alzammar Water/Wastewater
Operations Manager (909) 370-6101 (909) 953-5038
City of Colton Collections Department Call Out List
Name Title Work Phone Other
Mario Arredondo Collections Systems
Maintenance Supervisor (909) 376-4233
Joel Schwartz Senior Collections
Technician (909) 835-9785
Aaron Bolton Collections Technician II (909) 222-2626
Aaron Roman Morales Collections Technician I (909) 835-2566 Kyle Farris Collections Technician I (909) 821-8940
Ulysses Rodriguez Collections Technician I (909) 953-5778 Andrew Carrillo Collections Technician I (909) 953-6574 City of Colton Water Reclamation Facility Operators
Name Title Phone No. Other
Ovidiu Bostan Wastewater Supervisor (909) 772-7891 (909) 289-9468 Michael J. Brown Senior WWTP Operator (909) 835-8660 (909) 685-8268 Martin L. Oliva WWTP Operator II (909) 772-9686
Anthony Alvarez WWTP Operator I (909) 835-8666
Rodney D. Powell WWTP Operator I (909) 835-7373 (760) 475-8836 Ray A. Scott WWTP Operator I (909) 835-7440 (909) 533-7377 James A. Olea WWTP Operator I (909) 222-5782 (626) 923-8474 Jose Esparza WWTP Operator I (909) 835-9788 (909) 522-6702 City of Colton Water Reclamation Facility Maintenance
Name Title Phone No. Other
William Shingleton Equipment Mechanic II (909) 772-3481 (909) 336-4042 Art Contreras Equipment Mechanic II (760) 269-6975
City of Colton Environmental Compliance Division
Name Title Phone No. Other
Esteban Vasquez Senior Environmental
Compliance Inspector (951) 346-8233 (323) 798-6445
Robert D’Alessandro Environmental Compliance
Inspector I (951) 500-8545
Sara Raymondi Qualified Industrial Storm
Water Practitioner (951) 318-3328
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
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ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING AND
RECORDKEEPING REQUIREMENTS
Table of Contents
1. Notification Requirements......................................................................................... E1-3
1.1. Notification of Spills of 1,000 Gallons or Greater to the California Office of Emergency Services ...................................................................................... E1-3
1.2. Spill Notification Information........................................................................... E1-4
1.3. Notification of Spill Report Updates................................................................ E1-4
2. Spill-Specific Monitoring Requirements .................................................................... E1-5
2.1 Spill Location and Spread .............................................................................. E1-5
2.2 Spill Volume Estimation.................................................................................. E1-5
2.3. Receiving Water Monitoring ............................................................................E1-5
2.4. Safety and Access Exceptions ........................................................................E1-8
3. Reporting Requirements ............................................................................................E1-8
3.1. Reporting Requirements for Individual Category 1 Spill Reporting .................E1-8
3.2. Reporting Requirements for Individual Category 2 Spill Reporting ...............E1-12
3.3. Monthly Certified Spill Reporting for Category 3 Spills..................................E1-14
3.4. Monthly Certified Spill Reporting for Category 4 Spills..................................E1-16
3.5. Amended Certified Spill Reports for Category 3 Spills ..................................E1-16
3.6. Annual Certified Spill Reporting of Category 4 and/or Lateral Spills .............E1-16
3.7. Monthly Certification of “No-Spills” or “Category 4 Spills” and/or “Non-Category 1 Lateral Spills” ................................................................................................E1-16
3.8. Electronic Sanitary Sewer System Service Area Boundary Map...................E1-17
3.9. Annual Report (Previously termed as Collection System Questionnaire in General Order 2006-0003-DWQ)..................................................................E1-17
3.10. Sewer System Management Plan Audit Reporting Requirements ................E1-19
3.11. Sewer System Management Plan Reporting Requirements .........................E1-19
4. Recordkeeping Requirements .................................................................................E1-20
4.1. Recordkeeping Time Period..........................................................................E1-20
4.2. Availability of Documents ..............................................................................E1-20
4.3. Spill Reports..................................................................................................E1-20
4.4. Recordkeeping of Category 4 Spills and Non-Category 1 Lateral Spills .......E1-21
4.5. Sewer System Telemetry Records................................................................E1-22
4.6. Sewer System Management Plan Implementation Records .........................E1-22
4.7. Audit Records................................................................................................E1-23
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
E1 - 2
4.8. Equipment Records.......................................................................................E1-23
4.9. Work Orders..................................................................................................E1-23
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
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ATTACHMENT E1– NOTIFICATION, MONITORING, REPORTING AND RECORDKEEPING
REQUIREMENTS
The Notification Requirements (section 1), Spill-specific Monitoring Requirements (section 2), Reporting Requirements (section 3) and Recordkeeping Requirements (section 4) in this Attachment are pursuant to Water Code section 13267 and section 13383, and are an enforceable component of this General Order. For the purpose of this General Order, the term:
• Notification means the notifying of appropriate parties of a spill event or other activity. • Spill-specific Monitoring means the gathering of information and data for a specific spill event to be reported or kept as records.
• Reporting means the reporting of information and data into the online California Integrated Water Quality System (CIWQS) Sanitary Sewer System Database. • Recordkeeping means the maintaining of information and data in an official records storage system.
Failure to comply with the notification, monitoring, reporting and recordkeeping requirements in this General Order may subject the Enrollee to civil liabilities of up to $10,000 a day per violation pursuant to Water Code section 13385; up to $1,000 a day per violation pursuant to Water Code section 13268; or referral to the Attorney General for judicial civil enforcement.
Water Code section 13193 et seq. requires the Regional Water Quality Control Boards (Regional Water Boards) and the State Water Resources Control Board (State Water Board) to collect sanitary sewer spill information for each spill event and make this information available to the public. Sanitary sewer spill information for each spill event includes but is not limited to: Enrollee contact information for each spill event, spill cause, estimated spill volume and factors used for estimation, location, date, time, duration, amount discharged to waters of the State, response and corrective action(s) taken.
1. NOTIFICATION REQUIREMENTS
1.1. Notification of Spills of 1,000 Gallons or Greater to the California Office of Emergency Services
Per Water Code section 13271, for a spill that discharges in or on any waters of the State, or discharges or is deposited where it is, or probably will be, discharged in or on any waters of the State, the Enrollee shall notify the California Office of Emergency Services and obtain a California Office of Emergency Services Control Number as soon as possible but no later than two (2) hours after:
• The Enrollee has knowledge of the spill; and
• Notification can be provided without substantially impeding cleanup or other emergency measures.
The notification requirements in this section apply to individual spills of 1,000 gallons or greater, from an Enrollee-owned and/or operated laterals, to a water of the State.
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
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1.2. Spill Notification Information
The Enrollee shall provide the following spill information to the California Office of Emergency Services before receiving a Control Number, as applicable:
• Name and phone number of the person notifying the California Office of Emergency Services;
• Estimated spill volume (gallons);
• Estimated spill rate from the system (gallons per minute); • Estimated discharge rate (gallons per minute) directly into waters of the State or indirectly into a drainage conveyance system;
• Spill incident description:
o Brief narrative of the spill event, and
o Spill incident location (address, city, and zip code) and closest cross streets and/or landmarks;
• Name and phone number of contact person on-scene;
• Date and time the Enrollee was informed of the spill event; • Name of sanitary sewer system causing the spill;
• Spill cause or suspected cause (if known);
• Amount of spill contained;
• Name of receiving water body receiving or potentially receiving discharge; and • Description of water body impact and/ or potential impact to beneficial uses.
1.3. Notification of Spill Report Updates
Following the initial notification to the California Office of Emergency Services and until such time that the Enrollee certifies the spill report in the online CIWQS Sanitary Sewer System Database, the Enrollee shall provide updates to the California Office of Emergency Services regarding substantial changes to:
• Estimated spill volume (increase or decrease in gallons initially estimated); • Estimated discharge volume discharged directly into waters of the State or indirectly into a drainage conveyance system (increase or decrease in gallons initially estimated); and
• Additional impact(s) to the receiving water(s) and beneficial uses.
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
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2. SPILL-SPECIFIC MONITORING REQUIREMENTS
2.1 Spill Location and Spread
The Enrollee shall visually assess the spill location(s) and spread using photography, global positioning system (GPS), and other best available tools. The Enrollee shall document the critical spill locations, including:
• Photography and GPS coordinates for:
o The system location where spill originated.
For multiple appearance points of a single spill event, the points closest to the spill origin.
• Photography for:
o Drainage conveyance system entry locations,
o The location(s) of discharge into surface waters, as applicable, o Extent of spill spread, and
o The location(s) of clean up.
2.2 Spill Volume Estimation
To assess the approximate spill magnitude and spread, the Enrollee shall estimate the total spill volume using updated volume estimation techniques, calculations, and documentation for electronic reporting. The Enrollee shall update its notification and reporting of estimated spill volume (which includes spill volume recovered) as further information is gathered during and after a spill event.
2.3. Receiving Water Monitoring
2.3.1. Receiving Water Visual Observations
Through visual observations and use of best available spill volume-estimating techniques and field calculation techniques, the Enrollee shall gather and document the following information for spills discharging to surface waters:
• Estimated spill travel time to the receiving water;
• For spills entering a drainage conveyance system, estimated spill travel time from the point of entry into the drainage conveyance system to the point of discharge into the receiving water;
• Estimated spill volume entering the receiving water; and • Photography of:
o Waterbody bank erosion,
o Floating matter,
o Water surface sheen (potentially from oil and grease),
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
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o Discoloration of receiving water, and
o Impact to the receiving water.
2.3.2. Receiving Water – Water Quality Sampling and Analysis For sewage spills in which an estimated 50,000 gallons or greater are discharged into a surface water, the Enrollee shall conduct the following water quality sampling no later than 18 hours after the Enrollee’s knowledge of a potential discharge to a surface water:
• Collect one water sample, each day of the duration of the spill, at:
o The DCS-001 location as described in section 2.3.4 (Receiving Water Sampling Locations) of this Attachment, if sewage discharges to a surface water via a drainage conveyance system; and/or
o Each of the three receiving water sampling locations in section 2.3.4 (Receiving Water Sampling Locations) of this Attachment;
If the receiving water has no flow during the duration of the spill, the Enrollee must report “No Sampling Due To No Flow” for its receiving water sampling locations.
The Enrollee shall analyze the collected receiving water samples for the following constituents per section 2.3.3 (Water Quality Analysis Specifications) of this Attachment:
• Ammonia, and
• Appropriate bacterial indicator(s) per the applicable Basin Plan water quality objectives, including one or more of the following, unless directed otherwise by the Regional Water Board:
o Total Coliform Bacteria
o Fecal Coliform Bacteria
o E-coli
o Enterococcus
Dependent on the receiving water(s), sampling of bacterial indicators shall be sufficient to determine post-spill (after the spill) compliance with the water quality objectives and bacterial standards of the California Ocean Plan or the California Inland Surface Water Enclosed Bays, and Estuaries Plan, including the frequency and/or number of post-spill receiving water samples as may be specified in the applicable plans.
The Enrollee shall collect and analyze additional samples as required by the applicable Regional Water Board Executive Officer or designee.
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
AND RECORDKEEPING REQUIREMENTS December 6, 2022
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2.3.3. Water Quality Analysis Specifications
Spill monitoring must be representative of the monitored activity (40 Code of Federal Regulations section 122.41(j)(1)).
Sufficiently Sensitive Methods
Sample analysis must be conducted according to sufficiently sensitive test methods approved under 40 Code of Federal Regulations Part 136 for the sample analysis of pollutants. For the purposes of this General Order, a method is sufficiently sensitive when the minimum level of the analytical method approved under 40 Code of Federal Regulations Part 136 is at or below the receiving water pollutant criteria.
Environmental Laboratory Accreditation Program-Accredited Laboratories The analysis of water quality samples required per this General Order must be performed by a laboratory that has accreditation pursuant to Article 3 (commencing with section 100825) of Chapter 4 of Part 1 of Division 101 of the Health and Safety Code. (Water Code section 13176(a).) The State Water Board accredits laboratories through its Environmental Laboratory Accreditation Program (ELAP).
2.3.4. Receiving Water Sampling Locations
The Enrollee shall collect receiving water samples at the following locations.
Sampling of Flow in Drainage Conveyance System (DCS) Prior to Discharge Sampling
Location Sampling Location Description
DCS-001 A point in a drainage conveyance system before the drainage conveyance system flow discharges into a receiving water.
Receiving Surface Water Sampling (RSW)1
Sampling
Location Sampling Location Description
RSW-001
Point of Discharge
A point in the receiving water where sewage initially enters the receiving water.
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.
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
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Sampling
Location Sampling Location Description
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.
1 The Enrollee must use its best professional judgment to determine the upstream and downstream distances based on receiving water flow, accessibility to upstream/downstream waterbody banks, and size of visible sewage plume.
2.4. Safety and Access Exceptions
If the Enrollee encounters access restrictions or unsafe conditions that prevents its compliance with spill response requirements or monitoring requirements in this General Order, the Enrollee shall provide documentation of access restrictions and/or safety hazards in the corresponding required report.
3. REPORTING REQUIREMENTS
All reporting required in this General Order must be submitted electronically to the online CIWQS Sanitary Sewer System Database (https://ciwqs.waterboards.ca.gov), unless specified otherwise in this General Order. Electronic reporting may solely be conducted by a Legally Responsible Official or Data Submitter(s) previously designated by the Legally Responsible Official, as required in section 5.8 (Designation of Data Submitters) of this General Order.
The Enrollee shall report any information that is protected by the Homeland Security Act, by email to [email protected], with a brief explanation of the protection provided by the Homeland Security Act for the subject report to be protected from unauthorized disclosure and/or public access, and for official Water Board regulatory purposes only.
3.1. Reporting Requirements for Individual Category 1 Spill Reporting
3.1.1. Draft Spill Report for Category 1 Spills
Within three (3) business days of the Enrollee’s knowledge of a Category 1 spill, the Enrollee shall submit a Draft Spill Report to the online CIWQS Sanitary Sewer System Database.
The Draft Spill Report must, at minimum, include the following items:
1. Contact information: Name and telephone number of Enrollee contact person to respond to spill-specific questions;
2. Spill location name;
3. Date and time the Enrollee was notified of, or self-discovered, the spill;
4. Operator arrival time;
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
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5. Estimated spill start date and time;
6. Date and time the Enrollee notified the California Office of Emergency Services, and the assigned control number;
7. Description, photographs, and GPS coordinates of the system location where the spill originated;
o If a single spill event results in multiple appearance points, provide GPS coordinates for the appearance point closest to the failure point and describe each additional appearance point in the spill appearance point explanation field;
8. Estimated total spill volume exiting the system;
9. Description and photographs of the extent of the spill and spill boundaries;
10. Did the spill reach a drainage conveyance system? If Yes:
o Description of the drainage conveyance system transporting the spill; o Photographs of the drainage conveyance system entry location(s); o Estimated spill volume fully recovered from the drainage conveyance system; o Estimated spill volume remaining within the drainage conveyance system;
11. Description and photographs of all discharge point(s) into the surface water;
12. Estimated spill volume that discharged to surface waters; and
13. Estimated total spill volume recovered.
3.1.2. Certified Spill Report for Category 1 Spills
Within 15 calendar days of the spill end date, the Enrollee shall submit a Certified Spill Report for Category 1 spills, to the online CIWQS Sanitary Sewer System Database.
Upon completion of the Certified Spill Report, the online CIWQS Sanitary Sewer System Database will issue a final spill event identification number.
The Certified Spill Report must, at minimum, include the following mandatory information in addition to all information in the Draft Spill Report per section 3.1.1 (Draft Spill Report for Category 1 Spills) above:
1. Description of the spill event destination(s), including GPS coordinates if available, that represent the full spread and reach of the spill;
2. Spill end date and time;
3. Description of how the spill volume estimations were calculated, including at a minimum:
o The methodology, assumptions and type of data relied upon, such as supervisory control and data acquisition (SCADA) records, flow monitoring or other telemetry information used to estimate the volume of the spill discharged, and the volume of the spill recovered (if any volume of the spill was recovered), and o The methodology(ies), assumptions and type of data relied upon for estimations of the spill start time and the spill end time;
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
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4. Spill cause(s) (for example, root intrusion, grease deposition, etc.);
5. System failure location (for example, main, lateral, pump station, etc.);
6. Description of the pipe material, and estimated age of the pipe material, at the failure location;
7. Description of the impact of the spill;
8. Whether or not the spill was associated with a storm event;
9. Description of spill response activities including description of immediate spill containment and cleanup efforts;
10. Description of spill corrective action, including steps planned or taken to reduce, eliminate, and prevent reoccurrence of the spill, and a schedule of major milestones for those steps;
11. Spill response completion date;
12. Detailed narrative of investigation and investigation findings of cause of spill;
13. Reasons for an ongoing investigation (as applicable) and the expected date of completion;
14. Name and type of receiving water body(s);
15.Description of the water body(s), including but not limited to:
o Observed impacts on aquatic life,
o Public closure, restricted public access, temporary restricted use, and/or posted health warnings due to spill,
o Responsible entity for closing/restricting use of water body, and o Number of days closed/restricted as a result of the spill.
16.Whether or not the spill was located within 1,000 feet of a municipal surface water intake; and
17. If water quality samples were collected, identify sample locations and the parameters the water quality samples were analyzed for. If no samples were taken, Not Applicable shall be selected.
3.1.3. Spill Technical Report for Individual Category 1 Spill in which 50,000 Gallons or Greater Discharged into a Surface Water
For any spill in which 50,000 gallons or greater discharged into a surface water, within 45 calendar days of the spill end date, the Enrollee shall submit a Spill Technical Report to the online CIWQS Sanitary Sewer System Database. The Spill Technical Report, at minimum, must include the following information:
1. Spill causes and circumstances, including at minimum:
o Complete and detailed explanation of how and when the spill was discovered;
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
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o Photographs illustrating the spill origin, the extent and reach of the spill, drainage conveyance system entrance and exit, receiving water, and post-cleanup site conditions;
o Diagram showing the spill failure point, appearance point(s), the spill flow path, and ultimate destinations;
o Detailed description of the methodology employed, and available data used to calculate the discharge volume and, if applicable, the recovered spill volume; o Detailed description of the spill cause(s);
o Description of the pipe material, and estimated age of the pipe material, at the failure location;
o Description of the impact of the spill;
o Copy of original field crew records used to document the spill; and o Historical maintenance records for the failure location.
2. Enrollee’s response to the spill:
o Chronological narrative description of all actions taken by the Enrollee to terminate the spill;
o Explanation of how the Sewer System Management Plan Spill Emergency Response Plan was implemented to respond to and mitigate the spill; and o Final corrective action(s) completed and a schedule for planned corrective actions, including:
▪ Local regulatory enforcement action taken against an illicit discharge in response to this spill, as applicable,
▪ Identifiable system modifications, and operation and maintenance program modifications needed to prevent repeated spill occurrences, and ▪ Necessary modifications to the Emergency Spill Response Plan to incorporate lessons learned in responding to and mitigating the spill.
3. Water Quality Monitoring, including at minimum:
o Description of all water quality sampling activities conducted; o List of pollutant and parameters monitored, sampled and analyzed; as required in section 2.3 (Receiving Water Monitoring) of this Attachment; o Laboratory results, including laboratory reports;
o Detailed location map illustrating all water quality sampling points; and o Other regulatory agencies receiving sample results (if applicable).
4. Evaluation of spill impact(s), including a description of short-term and long-term impact(s) to beneficial uses of the surface water.
STATEWIDE SANITARY SEWER SYSTEMS GENERAL ORDER 2022-0103-DWQ ATTACHMENT E1 – NOTIFICATION, MONITORING, REPORTING
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3.1.4. Amended Certified Spill Reports for Individual Category 1 Spills The Enrollee shall update or add additional information to a Certified Spill Report within 90 calendar days of the spill end date by amending the report or by adding an attachment to the Spill Report in the online CIWQS Sanitary Sewer System Database.
The Enrollee shall certify the amended report.
After 90 calendar days, the Enrollee shall contact the State Water Board at [email protected] to request to amend a Spill Report. The Legally Responsible Official shall submit justification for why the additional information was not reported within the Amended Spill Report due date.
3.2. Reporting Requirements for Individual Category 2 Spill Reporting
3.2.1. Draft Spill Report for Category 2 Spills
Within three (3) business days of the Enrollee’s knowledge of a Category 2 spill, the Enrollee shall submit a Draft Spill Report to the online CIWQS Sanitary Sewer System Database.
The Draft Spill Report must, at minimum, include the following items:
1. Contact information: Name and telephone number of Enrollee contact person to respond to spill-specific questions;
2. Spill location name;
3. Date and time the Enrollee was notified of, or self-discovered, the spill;
4. Operator arrival time;
5. Estimated spill start date and time;
6. Date and time the Enrollee notified the California Office of Emergency Services, and the assigned control number;
7. Description, photographs, and GPS coordinates of the system location where the spill originated;
If a single spill event results in multiple appearance points, provide GPS coordinates for the appearance point closest to the failure point and describe each additional appearance point in the spill appearance point explanation field;
8. Estimated total spill volume exiting the system;
9. Description and photographs of the extent of the spill and spill boundaries;
10. Did the spill reach a drainage conveyance system? If Yes:
o Description of the drainage conveyance system transporting the spill; o Photographs of the drainage conveyance system entry location(s); o Estimated spill volume fully recovered from the drainage conveyance system; o Estimated spill volume remaining within the drainage conveyance system;
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o Estimated spill volume discharged to a groundwater infiltration basin or facility, if applicable; and
11. Estimated total spill volume recovered.
3.2.2. Certified Spill Report for Category 2 Spills
Within 15 calendar days of the spill end date, the Enrollee shall submit a Certified Spill Report for the Category 2 spill, to the online CIWQS Sanitary Sewer System Database (https://ciwqs.waterboards.ca.gov). Upon completion of the Certified Spill Report, the online CIWQS Sanitary Sewer System Database will issue a final spill event identification number.
The Certified Spill Report must, at minimum, include the following mandatory information in addition to all information in the Draft Spill Report per section 3.2.1 (Draft Spill Report for Category 2 Spills) above:
1. Description of the spill event destination(s), including GPS coordinates if available, that represent the full spread and reach of the spill;
2. Spill end date and time;
3. Description of how the spill volume estimations were calculated, including at a minimum:
o The methodology, assumptions and type of data relied upon, such as supervisory control and data acquisition (SCADA) records, flow monitoring or other telemetry information used to estimate the volume of the spill discharged, and the volume of the spill recovered (if any volume of the spill was recovered), and o The methodology(ies), assumptions and type of data relied upon for estimations of the spill start time and the spill end time;
4. Spill cause(s) (for example, root intrusion, grease deposition, etc.);
5. System failure location (for example, main, pump station, etc.);
6. Description of the pipe/infrastructure material, and estimated age of the pipe material, at the failure location;
7. Description of the impact of the spill;
8. Whether or not the spill was associated with a storm event;
9. Description of spill response activities including description of immediate spill containment and cleanup efforts;
10. Description of spill corrective action, including steps planned or taken to reduce, eliminate, and prevent reoccurrence of the spill, and a schedule of major milestones for those steps;
11. Spill response completion date;
12. Detailed narrative of investigation and investigation findings of cause of spill;
13. Reasons for an ongoing investigation (as applicable) and the expected date of completion; and
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14. Whether or not the spill was located within 1,000 feet of a municipal surface water intake.
3.2.3. Amended Certified Spill Reports for Individual Category 2 Spills The Enrollee shall update or add additional information to a Certified Spill Report within 90 calendar days of the spill end date by amending the report or by adding an attachment to the Spill Report in the online CIWQS Sanitary Sewer System Database.
The Enrollee shall certify the amended report.
After 90 calendar days, the Enrollee shall contact the State Water Board at [email protected] to request to amend a Spill Report. The Legally Responsible Official shall submit justification for why the additional information was not reported within the Amended Spill Report due date.
3.3. Monthly Certified Spill Reporting for Category 3 Spills The Enrollee shall report and certify all Category 3 spills to the online CIWQS Sanitary Sewer System Database within 30 calendar days after the end of the month in which the spills occurred. (For example, all Category 3 spills occurring in the month of February shall be reported and certified by March 30th). After the Legally Responsible Official certifies the spills, the online CIWQS Sanitary Sewer System Database will issue a spill event identification number for each spill.
The monthly reporting of all Category 3 spills must include the following items for each spill:
1. Contact information: Name and telephone number of Enrollee contact person to respond to spill-specific questions;
2. Spill location name;
3. Date and time the Enrollee was notified of, or self-discovered, the spill;
4. Operator arrival time;
5. Estimated spill start date and time;
6. Description, photographs, and GPS coordinates where the spill originated:
o If a single spill event results in multiple appearance points, provide GPS coordinates for the appearance point closest to the failure point and describe each additional appearance point in the spill appearance point explanation field;
7. Estimated total spill volume exiting the system;
8. Description and photographs of the extent of the spill and spill boundaries;
9. Did the spill reach a drainage conveyance system? If Yes:
o Description of the drainage conveyance system transporting the spill; o Photographs of the drainage conveyance system entry locations(s); o Estimated spill volume fully recovered from the drainage conveyance system; and
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o Estimated spill volume discharged to a groundwater infiltration basis or facility, if applicable.
10. Estimated total spill volume recovered;
11. Description of the spill event destination(s), including GPS coordinates, if available, that represent the full spread and reaches of the spill;
12. Spill end date and time;
13. Description of how the spill volume estimations were calculated, including, at minimum:
o The methodology and type of data relied upon, including supervisory control and data acquisition (SCADA) records, flow monitoring or other telemetry information used to estimate the volume of the spill discharged, and the volume of the spill recovered (if any volume of the spill was recovered), and o The methodology and type of data relied upon to estimate the spill start time, on-going spill rate at time of arrival (if applicable), and the spill end time;
14. Spill cause(s) (for example, root intrusion, grease deposition, etc.);
15. System failure location (for example, main, pump station, etc.);
16. Description of the pipe/infrastructure material, and estimated age of the pipe/infrastructure material, at the failure location;
17. Description of the impact of the spill;
18. Whether or not the spill was associated with a storm event;
19. Description of spill response activities including description of immediate spill containment and cleanup efforts;
20. Description of spill corrective actions, including steps planned or taken to reduce, eliminate, and prevent reoccurrence of the spill, and a schedule of the major milestones for those steps; including, at minimum:
o Local regulatory enforcement action taken against an illicit discharge in response to this spill, as applicable, and
o Identifiable system modifications, and operation and maintenance program modifications needed to prevent repeated spill occurrences at the same spill event location, including:
▪ Adjusted schedule/method of preventive maintenance,
▪ Planned rehabilitation or replacement of sanitary sewer asset, ▪ Inspected, repaired asset(s), or replaced defective asset(s), ▪ Capital improvements,
▪ Documentation verifying immediately implemented system modifications and operating/maintenance modifications,
▪ Description of spill response activities,
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▪ Spill response completion date, and
▪ Ongoing investigation efforts, and expected completion date of investigation to determine the full cause of spill;
21. Detailed narrative of investigation and investigation findings of cause of spill.
3.4. Monthly Certified Spill Reporting for Category 4 Spills The Enrollee shall report and certify the estimated total spill volume exiting the sanitary sewer system, and the total number of all Category 4 spills to the online CIWQS Sanitary Sewer System Database, within 30 calendar days after the end of the month in which the spills occurred.
3.5. Amended Certified Spill Reports for Category 3 Spills Within 90 calendar days of the certified Spill Report due date, the Enrollee may update or add additional information to a certified Spill Report by amending the report or by adding an attachment to the Spill Report in the online CIWQS Sanitary Sewer System Database. The Enrollee shall certify the amended report.
After 90 calendar days, the Legally Responsible Official shall contact the State Water Board at [email protected] to request to amend a certified Spill Report. The Legally Responsible Official shall submit justification for why the additional information was not reported within the 90-day timeframe for amending the certified Spill Report, as provided above.
3.6. Annual Certified Spill Reporting of Category 4 and/or Lateral Spills For all Category 4 spills and spills from its owned and/or operated laterals that are caused by a failure or blockage in the lateral and that do not discharge to a surface water, the Enrollee shall:
• Maintain records per section 4.4. of this Attachment; The Enrollee shall provide records upon request by State Water Board or Regional Water Board staff.
• Annually upload and certify a report, in an appropriate digital format, of all recordkeeping of spills to the online CIWQS Sanitary Sewer System Database, by February 1st after the end of the calendar year in which the spills occurred.
A spill from an Enrollee-owned and/or operated lateral that discharges to a surface water is a Category 1 spill; the Enrollee shall report all Category 1 spills per section 3.1 of Attachment E1 (Notification, Monitoring, Reporting and Recordkeeping Requirements) of this General Order.
3.7. Monthly Certification of “No-Spills” or “Category 4 Spills” and/or “Non-Category 1 Lateral Spills”
If either (1) no spills occur during a calendar month or (2) only Category 4, and/or Enrollee-owned and/or operated lateral spills (that do not discharge to a surface water) occur during a calendar month, the Enrollee shall certify, within 30 calendar days after
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the end of each calendar month, either a “No-Spill” certification statement, or a “Category 4 Spills” and/or “Non-Category 1 Lateral Spills” certification statement, in the online CIWQS Sanitary Sewer System Database, certifying that there were either no spills, or Category 4 and/or Non-Category 1 Lateral Spills that will be reported annually (per section 3.6 of this Attachment) for the designated month.
If a spill starts in one calendar month and ends in a subsequent calendar month, and the Enrollee has no further spills of any category, in the subsequent calendar month, the Enrollee shall certify “no-spills” for the subsequent calendar month.
If the Enrollee has no spills from its systems during a calendar month, but the Enrollee voluntarily reported a spill from a private lateral or a private system, the Enrollee shall certify “no-spills” for that calendar month.
If the Enrollees has spills from its owned and/or operated laterals during a calendar month, the Enrollee shall not certify “no spills” for that calendar month.
3.8. Electronic Sanitary Sewer System Service Area Boundary Map The Legally Responsible Official shall submit, to the State Water Board, an up-to-date electronic spatial map of its sewer system service area boundaries. The map must be in accordance with section 5.14 (Electronic Sanitary Sewer System Service Area Boundary Map) of this General Order and the specification provided on the statewide Sanitary Sewer Systems program website. The map must include the location of wastewater treatment facility(ies) that treats the sewer system waste, if in the same sewer service boundary.
By the Effective Date of this General Order, specifications for the electronic sanitary sewer service area boundary map format will be provided on the statewide Sanitary Sewer Systems Order program website.
3.9. Annual Report (Previously termed as Collection System Questionnaire in General Order 2006-0003-DWQ)
A new Enrollee shall complete and submit its first certified Annual Report into the online CIWQS Sanitary Sewer System Database, within 30 days of obtaining a CIWQS account; Subsequent Annual Reports are due by April 1 of each year.
All enrollees shall update their previous year’s Annual Report, by April 1 of each year after the Effective Date of this General Order, for each calendar year (January 1 through December 31).
The Annual Report must be entered directly into the online CIWQS Sanitary Sewer System Database. The Enrollee’s Legally Responsible Official shall certify the Annual Report as instructed in CIWQS;
The Annual Report must address, and update as applicable, the following items:
• Population served;
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• Updated sewer system service area boundary map, if service area boundary has changed from original map submitted per section 5.14 (Electronic Sanitary Sewer System Service Area Boundary Map) of this General Order; • Number of system operation and maintenance staff:
o Entry level (less than two years of experience),
o Journey level (greater than two years of experience), o Supervisory level, and
o Managerial level;
• Number of operation and maintenance staff certified as a certified collection system operator by the California Water Environmental Association (CWEA), with:
o Corresponding number of certified collection system operator grade levels (Grade I, II, III, IV, and V);
• System information:
o Miles of system gravity and force mains,
o Number of upper and lower service laterals connected to system, o Estimated number of upper and lower laterals owned and/or operated by the Enrollee,
o Portion of laterals that is Enrollee’s responsibility, o Average age the major components of system infrastructure, o Number and age of pump stations, and
o Estimated total miles of the system pipeline not accessible for maintenance; • Name and location of the treatment plant(s) receiving sanitary sewer system’s waste;
• Name of satellite sewer system tributaries;
• Number of system’s gravity sewer above or underground crossings of water bodies throughout system;
• Number of force main (pressurized pipe) above or underground crossings of water bodies throughout system;
• Number of siphons used to convey waste throughout the sewer system; • Miles of sewer system cleaned;
• Miles of sewer system video inspected, or comparable (i.e., video closed-circuit television or alternative inspection methods);
• System Performance Evaluation as specified in section 5.11 (System Performance Analysis) of this General Order;
• Major spill causes (for example, root intrusion, grease deposition);
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• System infrastructure failure points (for example, main, pump station, lateral, etc.); • Ongoing spill investigations; and
• Actions taken to address system deficiencies.
3.10. Sewer System Management Plan Audit Reporting Requirements The Enrollee shall submit its Sewer System Management Plan Audit and other pertinent audit information, in accordance with section 5.4 (Sewer System Management Plan Audits) of this General Order, to the online CIWQS Sanitary Sewer System Database by six (6) months after the end of the 3-year audit period.
If a Sewer System Management Plan Audit is not conducted as required: the Enrollee shall:
• Update the online CIWQS Sanitary Sewer System Database and select the justification for not conducting the Audit; and
• Notify its corresponding Regional Water Board (see Attachment F (Regional Water Quality Control Board Contact Information)) of the justification for the lapsed requirements.
The Enrollee’s reporting of a justification for not conducting a timely Audit does not justify non-compliance with this General Order. The Enrollee shall:
• Submit the late Audit as required in this General Order; and • Comply with subsequent Audit requirements and due dates corresponding with the original audit cycle.
3.11. Sewer System Management Plan Reporting Requirements For an Existing Enrollee previously regulated by Order 2006-0003-DWQ: Within every six (6) years after the required due date of its last Plan Update, the Legally Responsible Official shall upload and certify a local governing entity-approved Sewer System Management Plan Update to the online CIWQS Sanitary Sewer System Database. If the electronic document format or size capacity prevents the electronic upload of the Plan, the Legally Responsible Official shall report an electronic link to its updated Sewer System Management Plan posted on its own website.
Order 2006-0003-DWQ required each enrollee to develop its initial Sewer System Management Plan per the following schedule, with required Plan updates at a frequency of 5-years thereafter:
Systems serving populations: Greater than 100,000: May 2, 2009 Between 100,000 and 10,000: August 2, 2009
Between 10,000 and 2,500: May 2, 2010
Less than 2,500: August 2, 2010
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This Order carries forth the previously-required Plan Update schedule per Order 2006-0003-DWQ. Per the six-year Plan Update frequency required in this Order, the Enrollee shall upload and certify its first Plan Update, to the online CIWQS Sanitary Sewer System Database by the following due dates, with subsequent Plan Updates at the frequency of six years thereafter:
Systems serving populations: Greater than 100,000: May 2, 2025 Between 100,000 and 10,000: August 2, 2025
Between 10,000 and 2,500: May 2, 2026
Less than 2,500: August 2, 2026
For a New Enrollee: Within twelve (12) months of its Application for Enrollment Approval date, the Legally Responsible Official of a new Enrollee shall upload and certify a local governing entity-approved Sewer System Management Plan to the online CIWQS Sanitary Sewer System Database. If electronic document format or size capacity prevents the electronic upload of the Plan, the Legally Responsible Official shall report an electronic link to its Sewer System Management Plan posted on its own website. The due date for subsequent 6-year Plan updates, is six (6) years from the submittal due date of the new Enrollee’s first Sewer System Management Plan.
4. RECORDKEEPING REQUIREMENTS
The Enrollee shall maintain records to document compliance with the provisions of this General Order, and previous General Order 2006-0003-DWQ as applicable, for each sanitary sewer system owned, including any required records generated by an Enrollee’s contractor(s).
4.1. Recordkeeping Time Period
The Enrollee shall maintain records of documents required in this Attachment, including records collected for compliance with this General Order, and records collected in accordance with previous General Order 2006-0003-DWQ, for five (5) years.
4.2. Availability of Documents
The Enrollee shall make the records required in this General Order readily available, either electronic or hard copies, for review by Water Board staff during onsite inspections or through an information request.
4.3. Spill Reports
The Enrollee shall maintain records for each of the following spill-related events and activities:
• Spill event complaint, including but not limited to records documenting how the Enrollee responded to notifications of spills. Each complaint record must, at a minimum, include the following information:
o Date, time, and method of notification,
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o Date and time the complainant first noticed the spill, if available, o Narrative description of the complaint, including any information the caller provided regarding whether the spill has reached surface waters or a drainage conveyance system, if available,
o Complainant’s contact information, if available, and
o Final resolution of the complaint;
• Records documenting the steps and/or remedial action(s) undertaken by the Enrollee, using all available information, to comply with this General Order, and previous General Order 2006-0003-DWQ as applicable;
• Records documenting how estimate(s) of volume(s) and, if applicable, volume(s) of spill recovered were calculated;
• All California Office of Emergency Services notification records, as applicable; and • Records, in accordance with the Monitoring Requirements in this Attachment.
4.4. Recordkeeping of Category 4 Spills and Non-Category 1 Lateral Spills An Enrollee must maintain the following records for each individual Category 4 spill and for each individual non-Category 1 Enrollee-owned and/or operated lateral spill, and report in accordance to section 3.6 (Annual Certified Spill Reporting of Category 4 and/or Lateral Spills) of this Attachment.
Recordkeeping of Individual Category 4 Spill Information:
1. Contact information: Name and telephone number of Enrollee contact person to respond to spill-specific questions;
2. Spill location name;
3. Description and GPS coordinates for the system location where the spill originated;
4. Did the spill reach a drainage conveyance system? If Yes:
o Description of drainage conveyance system location,
o Estimated spill volume fully recovered within the drainage conveyance system, and
o Estimated spill volume remaining within the drainage conveyance system;
5. Estimated total spill volume exiting the sanitary sewer system;
6. Spill date and start time;
7. Spill cause(s) (for example, root intrusion, grease deposition, etc.);
8. System failure location (for example, main, pump station, etc.);
9. Description of spill response activities including description of immediate spill containment and cleanup efforts;
10. Description of how the volume estimation was calculated, including, at minimum:
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o The methodology and type of data relied upon, including supervisory control and data acquisition (SCADA) records, flow monitoring or other telemetry information used to estimate the volume of the spill discharged, and the volume of the spill recovered (if any volume of the spill was recovered), and o The methodology and type of data relied upon to estimate the spill start time, ongoing spill rate at time of arrival (if applicable), and the spill end time;
11. Description of implemented system modifications and operating/maintenance modifications.
Recordkeeping of Individual Lateral Spill Information:
1. Date and time the Enrollee was notified of, or self-discovered, the spill;
2. Location of individual spill;
3. Estimated individual spill volume;
4. Spill cause(s) (for example, root intrusion, grease deposition, etc.); and
5. Description of how the volume estimations were calculated.
Total Annual Spill Information:
1. Estimated total annual spill volume;
2. Description of spill corrective actions, including at minimum:
o Local regulatory enforcement action taken against the sewer lateral owner in response to a spill, as applicable, and
o System operation, maintenance and program modifications implemented to prevent repeated spill occurrences at the same spill location.
4.5. Sewer System Telemetry Records
The Enrollee shall maintain the following sewer system telemetry records if used to document compliance with this General Order, and previous General Order 2006-0003-DWQ as applicable, including spill volume estimates:
• Supervisory control and data acquisition (SCADA) system(s); • Alarm system(s);
• Flow monitoring device(s) or other instrument(s) used to estimate sewage flow rates, and/or volumes;
• Computerized maintenance management system records; and • Asset management-related records.
4.6. Sewer System Management Plan Implementation Records The Enrollee shall maintain records documenting the Enrollee’s implementation of its Sewer System Management Plan, including documents supporting its Sewer System Management Plan audits, corrections, modifications, and updates to the Sewer System Management Plan.
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4.7. Audit Records
The Enrollee shall maintain, at minimum, the following records pertaining to its Sewer System Management Plan audits, and other internal audits:
• Completed audit documents and findings;
• Name and contact information of staff and/or consultants that conducted or involved in the audit; and
• Follow-up actions based on audit findings.
4.8. Equipment Records
The Enrollee shall maintain a log of all owned and leased sewer system cleaning, operational, maintenance, construction, and rehabilitation equipment.
4.9. Work Orders
The Enrollee shall maintain record of work orders for operations and maintenance projects.
2. SPILL-SPECIFIC MONITORING REQUIREMENTS
2.1 Spill Location and Spread
The Enrollee shall visually assess the spill location(s) and spread using photography, global positioning system (GPS), and other best available tools. The Enrollee shall document the critical spill locations, including:
• Photography and GPS coordinates for:
o The system location where spill originated. For multiple appearance points of a single spill event, the points closest to the spill origin.
• Photography for:
o Drainage conveyance system entry locations,
o The location(s) of discharge into surface waters, as applicable, o Extent of spill spread, and
o The location(s) of clean up.
2.2 Spill Volume Estimation
To assess the approximate spill magnitude and spread, the Enrollee shall estimate the total spill volume using updated volume estimation techniques, calculations, and documentation for electronic reporting.
The Enrollee shall update its notification and reporting of estimated spill volume (which includes spill volume recovered) as further information is gathered during and after a spill event.
2.3. Receiving Water Monitoring
2.3.1. Receiving Water Visual Observations
Through visual observations and use of best available spill volume-estimating techniques and field calculation techniques, the Enrollee shall gather and document the following information for spills discharging to surface waters:
• Estimated spill travel time to the receiving water;
• For spills entering a drainage conveyance system, estimated spill travel time from the point of entry into the drainage conveyance system to the point of discharge into the receiving water; • Estimated spill volume entering the receiving water; and • Photography of:
o Waterbody bank erosion,
o Floating matter,
o Water surface sheen (potentially from oil and grease), o Discoloration of receiving water, and
o Impact to the receiving water.
2.3.2. Receiving Water – Water Quality Sampling and Analysis For sewage spills in which an estimated 50,000 gallons or greater are discharged into a surface water, the Enrollee shall conduct the following water quality sampling no later than 18 hours after the Enrollee’s knowledge of a potential discharge to a surface water:
• Collect one water sample, each day of the duration of the spill, at:
o The DCS-001 location as described in section 2.3.4 (Receiving Water Sampling Locations) of this Attachment, if sewage discharges to a surface water via a drainage conveyance system; and/or
o Each of the three receiving water sampling locations in section 2.3.4 (Receiving Water Sampling Locations) of this Attachment; If the receiving water has no flow during the duration of the spill, the Enrollee must report “No Sampling Due To No Flow” for its receiving water sampling locations.
The Enrollee shall analyze the collected receiving water samples for the following constituents per section 2.3.3 (Water Quality Analysis Specifications) of this Attachment:
• Ammonia, and
• Appropriate bacterial indicator(s) per the applicable Basin Plan water quality objectives, including one or more of the following, unless directed otherwise by the Regional Water Board:
o Total Coliform Bacteria
o Fecal Coliform Bacteria
o E-coli
o Enterococcus
Dependent on the receiving water(s), sampling of bacterial indicators shall be sufficient to determine post-spill (after the spill) compliance with the water quality objectives and bacterial standards of the California Ocean Plan or the California Inland Surface Water Enclosed Bays, and Estuaries Plan, including the frequency and/or number of post-spill receiving water samples as may be specified in the applicable plans.
The Enrollee shall collect and analyze additional samples as required by the applicable Regional Water Board Executive Officer or designee.
2.3.3. Water Quality Analysis Specifications
Spill monitoring must be representative of the monitored activity (40 Code of Federal Regulations section 122.41(j)(1)).
Sufficiently Sensitive Methods
Sample analysis must be conducted according to sufficiently sensitive test methods approved under 40 Code of Federal Regulations Part 136 for the sample analysis of pollutants. For the purposes of this General Order, a method is sufficiently sensitive when the minimum level of the analytical method approved under 40 Code of Federal Regulations Part 136 is at or below the receiving water pollutant criteria.
Environmental Laboratory Accreditation Program-Accredited Laboratories The analysis of water quality samples required per this General Order must be performed by a laboratory that has accreditation pursuant to Article 3 (commencing with section 100825) of Chapter 4 of Part 1 of Division 101 of the Health and Safety Code. (Water Code section 13176(a).) The State Water Board accredits laboratories through its Environmental Laboratory Accreditation Program (ELAP).
2.3.4. Receiving Water Sampling Locations
The Enrollee shall collect receiving water samples at the following locations.
Sampling of Flow in Drainage Conveyance System (DCS) Prior to Discharge Sampling Location Sampling Location Description
DCS-001 A point in a drainage conveyance system before the drainage conveyance system flow discharges into a receiving water.
Receiving Surface Water Sampling (RSW)1
Sampling Location Sampling Location Description
RSW-001 Point of
Discharge
A point in the receiving water where sewage initially enters the receiving water.
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.
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. 1 The Enrollee must use its best professional judgment to determine the upstream and downstream distances based on receiving water flow, accessibility to upstream/downstream waterbody banks, and size of visible sewage plume.
2.4. Safety and Access Exceptions
If the Enrollee encounters access restrictions or unsafe conditions that prevents its compliance with spill response requirements or monitoring requirements in this General Order, the Enrollee shall provide documentation of access restrictions and/or safety hazards in the corresponding required report.
41 Appendix 7 - Sewer Pipe Blockage Control Program
Cool it
Can it
Trash it
Never pour grease down the drain
Enfríala
Guárdala
Tírala
Nunca tire grasa por la coladera
Haulers Contact Info.
County Permit
Number Accepted Waste Type(s) Disposal Practices
SMC Grease (951) 788-6042
Grease interceptor waste,
Spent cooking oil waste
SMC treates the collected waste onsite,
then hauls wastewater to the City of
Colton Water Reclamation Facility
JC Grease 951-736-1198 PT0009372 Grease Interceptor Waste JC Grease treates the collected waste
onsite, then discharges wastewater to
the City of Riverside's POTW
Baker Comodities 800.427.0696 PT0000411 Grease Interceptor Waste Baker Comodities treats the collected
waste onsite, then discahrges
wastewater to the City of Vernon's POTW
Last Updated June 2025
City of Colton List of Acceptable Liquid Waste Haulers for Pipe-Blocking Substances
MH # To MH # Street Cross Street
Blockage
Cause
Cleaning
Frequency
CCTV Inspection
Frequency
15-53 14-3 Mt. Vernon Fairway FOG Monthly Eveyr 3 Months 10-122 10-13 Mt. Vernon Shasta Dr. FOG Monthly Eveyr 3 Months 11-50 11-46 Shasta Dr. Ivy Ave. FOG Monthly Eveyr 3 Months 6-114 6-115 Mt. Vernon Olive St. FOG Monthly Eveyr 3 Months 6-107 6-108 El Taquito Easement FOG Monthly Eveyr 3 Months 6-108 6-109 Mt. Vernon El Taquito FOG Monthly Eveyr 3 Months 6-104 6-105 Mt. Vernon Citrus Ave. FOG Monthly Eveyr 3 Months 11-7 11-6 Larch Fairview Ave. FOG Monthly Eveyr 3 Months 3-24 3-25 Pennsylvania Johnston FOG Monthly Eveyr 3 Months 10-12 10-13 Pennsylvania C St. FOG Monthly Eveyr 3 Months 14-11 14-115 Pennsylvania Valley Blvd. FOG Monthly Eveyr 3 Months 4-44 4-49 Sago Palm San Bernardino Ave. FOG Monthly Eveyr 3 Months 4-50 4-49 San Bernardino Ave. Sago Palm FOG Monthly Eveyr 3 Months 8-24 8-25 Valley Blvd. Eucalyptus FOG Monthly Eveyr 3 Months 19-12 19-13 5th St. Congress Ave. FOG Monthly Eveyr 3 Months 25-5 25-49 Fiesta Village Washington Ave. FOG Monthly Eveyr 3 Months 14-24 14-22 13th St. Valley Blvd. FOG Monthly Eveyr 3 Months Rancho Ave. Agua Mansa FOG Monthly Eveyr 3 Months
Last Updated June 2025
City of Colton Collection System Hot Spots
42 Appendix 8 – SECAP
July 2016 i
pw://Carollo/Documents/Client/CA/Colton/9280A10/Deliverables/Report/SMP - TOC_LOA.docx
CITY OF COLTON
INTEGRATED MASTER PLAN
SEWER MASTER PLAN
TABLE OF CONTENTS
Page No.
EXECTUVE SUMMARY
CHAPTER 1: INTRODUCTION
1.1 BACKGROUND .................................................................................................... 1-1
1.2 GOALS AND OBJECTIVES.................................................................................. 1-1
1.3 CITY BOUNDARY ................................................................................................ 1-1
1.4 REPORT ORGANIZATION................................................................................... 1-3
1.5 ACKNOWLEDGEMENTS ..................................................................................... 1-4 CHAPTER 2: LAND USE AND POPULATION
2.1 STUDY AREA....................................................................................................... 2-1
2.2 CLIMATE.............................................................................................................. 2-1
2.3 EXISTING LAND USES........................................................................................ 2-3
2.4 PROJECTED LAND USE ..................................................................................... 2-4
2.5 FUTURE DEVELOPMENTS................................................................................. 2-8
2.6 EXISTING AND HISTORICAL POPULATION....................................................... 2-8
2.7 PROJECTED POPULATION .............................................................................. 2-11 CHAPTER 3: WASTEWATER FLOWS
3.1 WASTEWATER FLOW COMPONENTS............................................................... 3-1
3.1.1 Base Wastewater Flow.............................................................................. 3-1
3.1.2 Average Annual Flow ................................................................................ 3-1
3.1.3 Average Dry Weather Flow........................................................................ 3-2
3.1.4 Maximum Day Dry Weather Flow .............................................................. 3-2
3.1.5 Peak Dry Weather Flow............................................................................. 3-2
3.1.6 Maximum Day Wet Weather Flow ............................................................. 3-2
3.1.7 Peak Wet Weather Flow............................................................................ 3-2
3.1.8 Groundwater Infiltration ............................................................................. 3-2
3.1.9 Infiltration and Inflow ................................................................................. 3-2
3.2 HISTORICAL FLOWS........................................................................................... 3-3
3.3 FLOW MONITORING PROGRAM ........................................................................ 3-6
3.3.1 Flow Monitoring Sites ................................................................................ 3-6
3.3.1.1 Flow Monitoring Sites and Tributary Areas .................................. 3-6
3.3.1.2 Flow Meter Installation and Flow Calculation ............................... 3-6
3.3.2 Flow Monitoring Results .......................................................................... 3-10
3.4 EXISTING AVERAGE DRY WEATHER FLOW................................................... 3-13
3.5 WASTEWATER FLOW FORECASTING METHODOLOGY................................ 3-13
3.6 WASTEWATER FLOW PROJECTIONS............................................................. 3-13
3.7 DESIGN FLOWS ................................................................................................ 3-15
ii July 2016
pw://Carollo/Documents/Client/CA/Colton/9280A10/Deliverables/Report/SMP - TOC_LOA.docx CHAPTER 4: EXISTING WASTEWATER SYSTEM
4.1 WASTEWATER TREATMENT FACILITIES.......................................................... 4-1
4.2 COLLECTION SYSTEM FACILITIES.................................................................... 4-1
4.2.1 Gravity Sewers System ............................................................................. 4-2
4.2.1.1 Gravity Sewer Distribution by Diameter ....................................... 4-2
4.2.1.2 Gravity Sewer Distribution by Material ......................................... 4-7
4.2.1.3 Gravity Sewer System by Age ..................................................... 4-9
4.3 LIFT STATIONS AND FORCE MAINS................................................................ 4-11 CHAPTER 5: HYDRAULIC MODEL DEVELOPMENT
5.1 HYDRAULIC MODEL SELECTION....................................................................... 5-1
5.2 DATA COLLECTION AND VALIDATION .............................................................. 5-1
5.2.1 Pipelines.................................................................................................... 5-2
5.2.2 Manholes................................................................................................... 5-2
5.2.3 Lift Stations and Force Mains .................................................................... 5-2
5.2.4 Wastewater Treatment Plant ..................................................................... 5-2
5.2.5 Flow Monitoring Data................................................................................. 5-3
5.3 ELEMENTS OF THE HYDRAULIC MODEL.......................................................... 5-3
5.4 WASTEWATER LOAD ALLOCATION .................................................................. 5-4
5.5 HYDRAULIC MODEL CONSTRUCTION .............................................................. 5-7
5.6 HYDRAULIC MODEL CALIBRATION ................................................................... 5-8
5.6.1 Calibration Standards ................................................................................ 5-8
5.6.2 Dry Weather Flow Calibration.................................................................... 5-9
5.6.3 Wet Weather Flow Calibration ................................................................. 5-14 CHAPTER 6: EVALUATION CRITERIA
6.1 SEWER SYSTEM EVALUATION CRITERIA ........................................................ 6-1
6.1.1 Gravity Sewers .......................................................................................... 6-1
6.1.1.1 Manning's Roughness Coefficient (n) .......................................... 6-1
6.1.1.2 Flow Depth Criteria (d/D) ............................................................. 6-1
6.1.1.3 Design Velocities and Minimum Slopes ....................................... 6-2
6.1.1.4 Changes in Pipe Size .................................................................. 6-3
6.1.2 Lift Stations and Force Mains .................................................................... 6-3
6.1.3 Repair and Rehabilitation .......................................................................... 6-3 CHAPTER 7: EXISTING SYSTEM EVALUATION
7.1 COLLECTION SYSTEM CAPACITY EVALUATION.............................................. 7-1
7.1.1 Gravity Collection System Evaluation ........................................................ 7-1
7.1.2 Lift Station and Force Main Evaluation ...................................................... 7-5
7.2 COLLECTION SYSTEM CONDITION ASSESSMENT.......................................... 7-5
7.2.1 Gravity Collection System Condition Assessment...................................... 7-5
7.2.2 Lift Station Condition Assessment ............................................................. 7-9
7.3 WATER RECLAMATION FACILITY CONDITION ASSESSMENT........................ 7-9
7.4 PROPOSED EXISTING SYSTEM IMPROVEMENTS......................................... 7-10
7.4.1 Existing Collection System Capacity Improvements ................................ 7-15
7.4.2 Collection System Pipeline Rehabilitation Projects .................................. 7-16
7.4.3 Lift Station Rehabilitation Projects ........................................................... 7-19
7.4.4 Water Reclamation Facility Rehabilitation Projects.................................. 7-23
7.4.5 Other Recommendations......................................................................... 7-23
July 2016 iii
pw://Carollo/Documents/Client/CA/Colton/9280A10/Deliverables/Report/SMP - TOC_LOA.docx CHAPTER 8: FUTURE SYSTEM EVALUATION
8.1 COLLECTION SYSTEM CAPACITY EVALUATION ............................................. 8-1
8.1.1 Gravity Collection System Evaluation ........................................................ 8-1
8.1.2 Lift Station and Force Main Evaluation ...................................................... 8-1
8.2 PROPOSED FUTURE SYSTEM IMPROVEMENTS............................................. 8-2
8.2.1 Existing versus Future Improvement ......................................................... 8-6
8.2.2 Project Prioritization .................................................................................. 8-7 CHAPTER 9: CAPITAL IMPROVEMENT PLAN
9.1 PROJECT PRIORITIZATION................................................................................ 9-1
9.2 CAPITAL IMPROVEMENT PROJECT COSTS..................................................... 9-1
9.3 COST ESTIMATING ACCURACY ........................................................................ 9-2
9.4 CONSTRUCTION UNIT COSTS........................................................................... 9-2
9.4.1 Gravity Pipeline Unit Costs........................................................................ 9-2
9.4.2 Lift Station Replacement Unit Costs .......................................................... 9-2
9.4.3 Lift Station Rehabilitation Costs................................................................. 9-4
9.4.4 Force Mains .............................................................................................. 9-4
9.5 PROJECT COSTS AND CONTINGENCIES......................................................... 9-5
9.5.1 Baseline Construction Cost ....................................................................... 9-5
9.5.2 Estimated Construction Cost ..................................................................... 9-5
9.5.3 Capital Improvement Cost ......................................................................... 9-6
9.5.4 Capital Improvement Implementation ........................................................ 9-9
9.5.5 Existing Versus Future Users Cost Share.................................................. 9-9
LIST OF APPENDICES
APPENDIX A References
APPENDIX B City of Colton - Sewer Flow Monitoring and Capacity Study APPENDIX C Flow Estimates
APPENDIX D Dry Weather Flow Calibration Results
APPENDIX E Lift Station Condition Assessment
APPENDIX F WRF Condition Assessment
iv July 2016
pw://Carollo/Documents/Client/CA/Colton/9280A10/Deliverables/Report/SMP - TOC_LOA.docx
LIST OF TABLES
Table 2.1 Historic Climate Data................................................................................. 2-3 Table 2.2 Colton Land Use Designations .................................................................. 2-4 Table 2.3 Future Development Details(1).................................................................... 2-7 Table 2.4 Historical Service Area Population........................................................... 2-11 Table 2.5 Service Area Population Projections........................................................ 2-12 Table 3.1 Historical CWRF Flow Summary ............................................................... 3-4 Table 3.2 Flow Monitoring Locations ....................................................................... 3-10 Table 3.3 Dry Weather Flow Summary.................................................................... 3-11 Table 3.4 Peak Measured Flows During the Flow Monitoring Program ................... 3-12 Table 3.5 Wastewater Flow Projections................................................................... 3-14 Table 3.6 Future Wastewater Flow Projections ....................................................... 3-16 Table 3.7 Current and Projected Wastewater Flows................................................ 3-19 Table 4.1 Pipeline Overview...................................................................................... 4-2 Table 4.2 Pipeline Diameter by Material.................................................................... 4-8 Table 4.3 Pipeline Distribution by Year and Material ............................................... 4-10 Table 4.4 Lift Station Information............................................................................. 4-12 Table 5.1 Dry Weather Flow Calibration Summary.................................................. 5-12 Table 5.2 Wet Weather Flow Calibration Summary ................................................. 5-16 Table 6.1 Maximum Flow Depth Criteria.................................................................... 6-2 Table 6.2 Minimum Slope for New Pipes................................................................... 6-3 Table 6.3 Original Useful Life for Gravity Sewer Pipe by Type .................................. 6-4 Table 7.1 Existing Lift Station Capacity Evaluation.................................................... 7-6 Table 7.2 Useful Life Estimates by Pipe Material....................................................... 7-7 Table 7.3 Condition Assessments Types................................................................... 7-8 Table 7.4 Proposed Existing System Improvements ............................................... 7-13 Table 7.5 Sewer Main Rehabilitation and Replacement Forecast............................ 7-17 Table 7.6 Grand Terrace Sewer Main Rehabilitation and Replacement Forecast.... 7-18 Table 7.7 WRF Condition Assessment Recommendations...................................... 7-25 Table 8.1 Future Lift Station Evaluation..................................................................... 8-5 Table 8.2 Proposed Existing and Future System Improvements ............................. 8-11 Table 9.1 Gravity Pipeline Unit Construction Costs ................................................... 9-3 Table 9.2 Force Main Unit Construction Costs .......................................................... 9-5 Table 9.3 Sewer System Capacity Improvement Plan............................................... 9-7 Table 9.4 Summary of Capital Improvement Costs ................................................... 9-9 Table 9.5 Existing Versus Future Cost by Classification Type ................................. 9-10
July 2016 v
pw://Carollo/Documents/Client/CA/Colton/9280A10/Deliverables/Report/SMP - TOC_LOA.docx
LIST OF FIGURES
Figure 1.1 City Boundary............................................................................................ 1-2 Figure 2.1 Service Area Boundary.............................................................................. 2-2 Figure 2.2 Land Use Map........................................................................................... 2-5 Figure 2.3 Future Developments ................................................................................ 2-9 Figure 2.4 Historical and Projected Population......................................................... 2-12 Figure 3.1 Historical Flows at the CWRF.................................................................... 3-4 Figure 3.2 Hourly Flows at the CWRF: December 18-24, 2010 .................................. 3-5 Figure 3.3 Rainfall Event Classification: December 2010 Events................................ 3-5 Figure 3.4 Temporary Flow Monitoring Locations....................................................... 3-7 Figure 3.5 Flow Monitoring Locations Schematic ....................................................... 3-9 Figure 3.6 Typical Dry Weather Flow Variation (Meter 9) ......................................... 3-12 Figure 3.7 Projected ADWF...................................................................................... 3-18 Figure 3.8 Future Wastewater Flows........................................................................ 3-18 Figure 3.9 10-Year, 24-Hour Design Storm .............................................................. 3-19 Figure 4.1 Wastewater Collection System.................................................................. 4-3 Figure 4.2 Wastewater Collection System Ownership ................................................ 4-5 Figure 4.3 Pipeline Distribution by Diameter............................................................... 4-7 Figure 4.4 Pipeline Distribution by Material ................................................................ 4-9 Figure 4.5 Pipeline Distribution by Installation Decade............................................. 4-11 Figure 5.1 Modeled Wastewater Collection System.................................................... 5-5 Figure 5.2 Meter 2 Diurnal Patterns.......................................................................... 5-10 Figure 5.3 Meter 2 Dry Weather Flow Calibration..................................................... 5-13 Figure 5.4 Example RDII Unit Hydrograph ............................................................... 5-15 Figure 5.5 Wet Weather Flow Calibration (CWRF)................................................... 5-16 Figure 7.1 Sample Illustration of Backwater Effects in a Sewer .................................. 7-2 Figure 7.2 Existing System Deficiencies..................................................................... 7-3 Figure 7.3 Existing System Improvements ............................................................... 7-11 Figure 7.4 Sewer Main Rehabilitation and Replacement Forecast............................ 7-17 Figure 7.5 Age Based Rehabilitation and Replacement Program Results ................ 7-21 Figure 8.1 Future System Deficiencies....................................................................... 8-3 Figure 8.2 Future System Improvements.................................................................... 8-9 Figure 9.1 Lift Station Construction Cost vs. Capacity Curve...................................... 9-4 Figure 9.2 Existing and Future Cost by Project Type................................................ 9-11
Ú3
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Ú3
Ú3
Ú3
Ú3
Ú3
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Ú3
Ú3
Ú3
Ú3
Ú3
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Ú3
Ú3
Q3
Ú3
Crossroads LS
Glenwood
Wildwood LS
Lake
Cadena LS
Fairway LS
Mt.
Vernon LS
Fernando/Florez LS
12th & O LS
Wastewater
Treatment
Plant LS
Riverside LS
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VAN BUREN ST
MINONA DR
GREEN CIR
CITRUS ST
O ST
RAVEN WAY
LARK ST
M ST
CANTARA ST
NORMAN RD
PICO ST
LA
CADENA DR
MILANO
CYPRESS AVE
PRADO LN
SAN BERNARDINO AVE
OLD PELLIS EI R RD
MILL ST
PLUM PL
CANYON VISTA DR
F ST
10TH ST
L ST
KEY ST
ROSEDALE AVE
MIRIAM WAY
ETON DR
OAK ST
VIVIENDA AVE
PINE ST
F ST
HANNA ST
FAIRWAY DR
D ST
WASHINGTON ST
9TH ST
13TH ST
7TH ST
C ST
B ST
GRAND AVE
FINCH ST
BOSTICK AVE
BORDWELL AVE
N ST
K ST
M ST
L ST
VALLEY BLVD
SYCAMORE AVE
SPERRY DR
MAIN ST
WREN ST
RANCHDR
SLOVER AVE
AGUA MANSA RD
WESTWOOD ST
AUTO PLAZA DR
MEADOW LN
E ST
F ST
H ST
C ST
ROBIN WAY
10THST
SANTA ANA AVE
10TH ST
NEWPORT AVE
PELLISIER RD
PLACENTIA LN
STEEL RD
PRESTON ST
BORDWELL AVE
COOLEY DR
MT VERNON
AVE
MACY AVE
MERIDIAN AVE
CANAL ST
G ST
9TH ST
WILDROSE AVE
TERRACE AVE
JACKSON ST
2ND ST
8TH ST
HERMOSA ST
Figure 7.2
Existing System Deficiencies
City of Colton
Sewer Master Plan
0 0.5 1 Miles
O
Legend
Sewer Service Area
Q3 Water Reclamation Facility
Ú3 Lift Station
Major Freeways
Santa Ana River
Parcels
Force Mains
Gravity Mains
Maximum d/D > 0.92
Existing Deficiency
Backwater Pipeline
Ú3 Deficient Lift Station
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Table 7.4 Proposed Existing System Improvements
Table 7.4 Sewer Master PlanTable 7.4 City of Colton
ID Type of Improv. Description/Street Description/ Limits Ex. Size/
Diam.
(in)
Proposed
Size/ Diam.
(in) Replace/ New
Length
(ft)
Capacity Related ProjectsGravity Mains
C-1 Pipe Rancho Avenue Agua Mansa Road to the WRF 18 30 Replace 1,570C-2 Pipe Agua Mansa Road South 5th Street to Rancho Avenue 18 21 Replace 1,220C-3 Pipe South 5th Street Gerogia Street to West Congress Street 14 18 Replace 650C-4 Pipe South 5th Street Alley North of West M Street to West O Street 14 18 Replace 990C-5 Pipe West O Street South 11th Street to South 7th Street 16 21 Replace 1,810C-6 Pipe/Casing Pennsylvania Avenue West J Street to West K Street 12 15 Replace 570C-7 Pipe/Casing 11th Street Alley North of East Valley Boulevard to South of Freeway 12/14 18 Replace 740C-8 Pipe Pennsylvania Avenue/C Street East of Pennsylvania Avenue to West D Street 12 15 Replace 530 Lift Stations and Force Mains
LS-1 Lift Station Wastewater Treatment Plant Lift Station Add 5th 1,400 GPM Pump to Lift Station (10.1 mgd Total Capacity) 8.10 mgd 10.10 mgd Add Pump -- Rehabilitation Related Projects
R-1 Rehabiltation Near Term Rehabilitation/Replacement Pipes reaching end of useful life before 2020 8-12 8-12 R/R 1.46 milesR-2 Rehabiltation Long Term Rehabilitation/Replacement Pipes reaching end of useful life between 2021 and 2040 4"-30" 8"-30" R/R 29.23 milesR-3 Rehabiltation Lake Cadena Lift Station(1) Rehabiltation projects from the condition assessment -- -- R/R -- R-4 Rehabiltation Fernandez and Florez Lift Station Rehabiltation projects from the condition assessment -- -- R/R -- R-5 Rehabiltation Mt. Vernon Lift Station Rehabiltation projects from the condition assessment -- -- R/R -- R-6 Rehabiltation Fairway Lift Station Rehabiltation projects from the condition assessment -- -- R/R -- R-7 Rehabiltation Glenwood Wildwood Lift Station Rehabiltation projects from the condition assessment -- -- R/R --R-8 Rehabiltation Riverside Pump Station Rehabiltation projects from the condition assessment -- -- R/R -- R-9 Rehabiltation Water Reclamation Facility Rehabilitation Projects Rehabiltation projects from the condition assessment -- -- R/R -- Other Projects
O-1 Other Wet Weather Flow Monitoring Wet Weather Flow Monitoring During Rainy Season -- -- Other -- Notes:
1. This lift station is called out for abandonment for capacity reasons in the long term phase. Depending on the timing of future development, rehabilitation may not be necessary prior to being abandoned.
Project Length/Size
Table 9.3 Sewer System Capacity Improvement Plan
Table 9.3 Sewer Master Plan
Table 9.3 City of Colton
ID
Type of
Improv. Description/Street Description/ Limits
CIP
Reason
Ex. Size/
Diam.
(in)
Proposed
Size/
Diam.
(in)
Replace/
New
Length
(ft)
Capital
Improvement
Cost(1),(2),(3)
($)
Near Term
(2016-2020)
($)
Long Term
(2016-2020)
($)
Future
Users
Benefit
($)
Existing
Improvements
($)
Future
Improvements
($)
Capacity Related Projects
Gravity Mains
C-1 Pipe Rancho Avenue Agua Mansa Road to the WRF Existing 18 30 Replace 1,570 $ 965,000 $ 965,000 $ - 25% $ 728,000 $ 237,000 C-2 Pipe Agua Mansa Road South 5th Street to Rancho Avenue Existing 18 21 Replace 1,220 $ 553,000 $ 553,000 $ - 19% $ 448,000 $ 105,000 C-3 Pipe South 5th Street Gerogia Street to West Congress Street Existing 14 18 Replace 650 $ 228,000 $ 228,000 $ - 17% $ 190,000 $ 38,000 C-4 Pipe South 5th Street Alley North of West M Street to West O Street Existing 14 18 Replace 990 $ 348,000 $ 348,000 $ - 16% $ 291,000 $ 57,000 C-5 Pipe West O Street South 11th Street to South 7th Street Existing 16 24 Replace 1,810 $ 886,000 $ 886,000 $ - 22% $ 692,000 $ 194,000 C-6 Pipe/Casing Pennsylvania Avenue West J Street to West K Street Existing 12 18/30 Replace 570 $ 544,000 $ 544,000 $ - 17% $ 452,000 $ 92,000 C-7 Pipe/Casing 11th Street Alley North of East Valley Boulevard to South of Freeway Existing 12/14 18/30 Replace 740 $ 706,000 $ 706,000 $ - 19% $ 569,000 $ 137,000 C-8 Pipe Pennsylvania Avenue/C Street East of Pennsylvania Avenue to West D Street Existing 12 15 Replace 530 $ 172,000 $ 172,000 $ - 17% $ 143,000 $ 29,000 C-9 Pipe West Congress Street West 7th Street to West 5th Street Near Term 16 21 Replace 1,120 $ 508,000 $ 508,000 $ - 100% $ - $ 508,000 C-10 Pipe East H Street North Mt Vernon to west of North 12th Street Near Term 15 18 Replace 1,760 $ 618,000 $ 618,000 $ - 100% $ - $ 618,000 C-11 Pipe Pennsylvania Avenue West G Street to the freeway Long Term 12 15 Replace 1,000 $ 325,000 $ - $ 325,000 100% $ - $ 325,000 Lift Stations and Force Mains
LS-1 Lift Station Wastewater Treatment Plant Lift Station Add 5th 1,400 GPM Pump to Lift Station (10.1 mgd Total Capacity) Existing 8.10 mgd 10.10 mgd Add Pump -- $ 200,000 $ 200,000 $ - 20% $ 161,000 $ 39,000 Capacity Related Projects Subtotal $ 6,053,000 $ 5,728,000 $ 325,000 $ 3,674,000 $ 2,379,000 Rehabilitation Related Projects
R-1 Rehabiltation Near Term Rehabilitation/Replacement Pipes reaching end of useful life before 2020 Near Term 8-12 8-12 R/R 1.46 miles $ 1,894,000 $ 1,894,000 $ - 0% $ 1,894,000 $ - R-2 Rehabiltation Long Term Rehabilitation/Replacement Pipes reaching end of useful life between 2021 and 2040 Long Term 4"-30" 8"-30" R/R 29.23 miles $ 38,952,000 $ - $ 38,952,000 0% $ 38,952,000 $ - R-3 Rehabiltation Lake Cadena Lift Station(4) Rehabiltation projects from the condition assessment Near/Long -- -- R/R -- $ 83,000 $ 83,000 $ - 0% $ 83,000 $ - R-4 Rehabiltation Fernandez and Florez Lift Station Rehabiltation projects from the condition assessment Near Term -- -- R/R -- $ 25,000 $ 25,000 $ - 0% $ 25,000 $ - R-5 Rehabiltation Mt. Vernon Lift Station Rehabiltation projects from the condition assessment Long Term -- -- R/R -- $ 1,179,000 $ - $ 1,179,000 0% $ 1,179,000 $ - R-6 Rehabiltation Fairway Lift Station Rehabiltation projects from the condition assessment Near/Long -- -- R/R -- $ 185,000 $ 14,000 $ 171,000 0% $ 185,000 $ - R-7 Rehabiltation Glenwood Wildwood Lift Station Rehabiltation projects from the condition assessment Near/Long -- -- R/R -- $ 181,000 $ 16,000 $ 165,000 0% $ 181,000 $ - R-8 Rehabiltation Riverside Pump Station Rehabiltation projects from the condition assessment Near/Long -- -- R/R -- $ 256,000 $ 74,000 $ 182,000 0% $ 256,000 $ - R-9 Rehabiltation Water Reclamation Facility Rehabilitation Projects Rehabiltation projects from the condition assessment Near/Long -- -- R/R -- $ 3,500,000 $ 1,862,000 $ 1,638,000 0% $ 3,500,000 $ - Rehab Related Projects Subtotal $ 46,255,000 $ 3,968,000 $ 42,287,000 $ 46,255,000 $ - Developer Specific Projects
Gravity Mains
D-1 Pipe Roquet Ranch New mains to extend service to Roquet Ranch development Near Term -- 10 New 1,460 $ 421,000 $ - $ 421,000 100% $ - $ 421,000 D-2 Pipe Roquet Ranch New mains to extend service to Roquet Ranch development Near Term -- 8 New 990 $ 272,000 $ - $ 272,000 100% $ - $ 272,000 D-3 Pipe Roquet Ranch New mains to extend service to Roquet Ranch development Near Term -- 8 New 1,250 $ 343,000 $ - $ 343,000 100% $ - $ 343,000 D-4 Pipe Lake Cadena/Center Street Extend main from Lake Cadena LS (abandoned) to main on Center Street Near/Long -- 14 New 1,330 $ 421,000 $ - $ 421,000 100% $ - $ 421,000 D-6 Pipe Iron Horse New main to extend service to Iron Horse Development Near Term -- 8 New 2,210 $ 607,000 $ - $ 607,000 100% $ - $ 607,000 D-7 Pipe Agua Mansa New main to extend service toAgua Mansa Project Near Term -- 8 New 4,570 $ 1,255,000 $ - $ 1,255,000 100% $ - $ 1,255,000 D-8 Pipe La Cadena/La Loma New main to serve properties on La Cadena Drive and La Loma Avenue Near Term -- 8 New 2,500 $ 686,000 $ - $ 686,000 100% $ - $ 686,000 Lift Stations and Force Mains
D-5A Force Main Roquet Ranch New force main to connect Center Street LS Near/Long -- 12 New 1,356 $ 418,000 $ - $ 418,000 100% $ - $ 418,000 D-5B Force Main Roquet Ranch New force main to connect Center Street LS Near/Long -- 8 New 6,055 $ 1,696,000 $ - $ 1,696,000 100% $ - $ 1,696,000 LS-2 Lift Station Roquet Ranch New lift station to replace Lake Cadena LS and to serve Roquet Ranch Near/Long -- 2.2 mgd New -- $ 1,690,000 $ 1,690,000 100% $ - $ 1,690,000 Developer Specific Projects Subtotal $ 7,809,000 $ - $ 7,809,000 $ - $ 7,809,000 Other Projects
O-1 Other Wet Weather Flow Monitoring Wet Weather Flow Monitoring During Rainy Season Existing -- -- Other -- $ 40,000 $ 40,000 $ - 0% $ 40,000 $ - Other Projects Subtotal $ 40,000 $ 40,000 $ - $ 40,000 $ - CIP Total $ 60,157,000 $ 9,736,000 $ 50,421,000 $ 49,969,000 $ 10,188,000 Notes:
1. Estimated Construction Cost to account for unforeseen events and unknown conditions (30%).
2. Additional markups include engineering, management, environmental, and legal (27.5%)
3. Total Contingency Markup = 65.8% (130%x127.5%-100%). ENR CCI = 11,628 (LA, October 2015)
4. This lift station is called out for abandonment for capacity reasons in the long term phase. Costs associated with near term condition assessment recommendations are included in the CIP for the near term. Depending on the timing of future development, rehabilitation may not be necessary prior to being abandoned.
Project Length/Size and Cost Phasing Reimbursement Category
City of Colton
Sewer Flow Monitoring and Capacity Study
V&A Project No. 13-0003 Introduction 4
Figure 1-1. Locations of Flow Monitoring Sites
Flow Site
N
Site 1
Site 4
Site 2
Site 5
Site 9
Site 3
Site 10
Site 6
Site 8
Site 7
43 Appendix 9 - Monitoring & Measurement
City of Colton SSMP Change Log
Revision/
Update
Date
Section/
Reference Description of Change Approval Date
Approved
By Comments
6/6/2023 Spill
Emergency
Response Plan
(SERP)
Updated Section 6 of the SSMP, previously
known as the Overflow Emergency Response
Plan (OERP). This was updated to comply
with Section 5.12 of Order 2022-0103-DWQ.
6/6/2023 Mario
Arredondo
This update is compliant with the
required elements of Attachment D
to Order 2022-0103-DWQ, but it is
not very detailed. Furthermore, the
current version of the SSMP (2015
revision) still contains the previous
version of the OERP. The updated
SERP will be included in the SSMP
upon update, scheduled for 2025.
8/27/2024 SERP With help from Mario Arredondo (Collections Supervisor), details were added to nearly
every section of the SERP.
8/27/2024 Mario
Arredondo
The SERP has yet to be integrated
into the SSMP. This will occur with
the upcoming SSMP update.
Nonetheless, many copies of the
SERP were printed. These copies
can be found in Mario’s office and
each field truck used by the
Collections Dep.
10/25/24 Appendix J Added the updated SERP to the SSMP as Appendix J.
June 2025 Bassam
Alzammar
Appendix J is now linked to various
locations in the SSMP and is
available in the Appendices file
folder which should always remain
on the same server in order for the
links in the document to function
properly.
10/25/24 Section 6.
SERP
Removed the OERP from Section 6 of the
SSMP and added a brief
description/introduction to the new SERP with
a hyperlink to Appendix J – the new location
of the updated SERP.
June 2025 Bassam
Alzammar
The OERP took up multiple pages
in the SSMP. Section 6 in the SSMP
is now one page long, while the
actual SERP document is much
longer, with its own set of
appendices.
10/25/24 Appendix K Added the SSMP Change Log to the SSMP as Appendix K.
June 2025 Bassam
Alzammar
This Change Log, like the SSMP
itself is designed to be continuously
updated.
June 2025 Entire
Document
Updated to comply with State Water
Resources Control Board Order 2022-0103-
DWQ, replacing references to the 2006 Order.
June 2025 Bassam
Alzammar
The entire document was
reorganized to match the 11-element
structure outlined in the 2022 Order;
terminology like 'SSO' replaced
with 'Spill' throughout.
June 2025 Executive
Summary
Expanded to include system updates,
improved interdepartmental coordination, and
highlights of Order 2022-0103-DWQ
requirements.
June 2025 Bassam
Alzammar
June 2025 1.3 Sewer
System Asset
Overview
Added detailed asset summary tables for
Colton and Grand Terrace; clarified City
responsibilities under interagency agreement.
June 2025 Bassam
Alzammar
Clarifies City of Colton and Grand
Terrace roles and presents asset data
in table format; improves
transparency and tracking of shared
system responsibilities.
June 2025 2.2 Key
Personnel and
Responsibilities
Updated to reflect current staff titles, contact
information, and role assignments per SSMP
element.
June 2025 Bassam
Alzammar
June 2025 3.0 Legal
Authority
Updated Sewer Use Ordinance reference from
O-02-15 to O-03-19; clarified legal authority
for inspections, enforcement, and storm sewer
coordination.
June 2025 Bassam
Alzammar
June 2025 4.0 Operation
and
Maintenance
Program
Added inventory tables to Appendix 4; noted
implementation of new work order system and
updated information on CCTV equipment and
known problem areas.
June 2025 Bassam
Alzammar
June 2025 6.0 Spill
Emergency
Response Plan
(SERP)
Replaced Spill Response content with updated
2023/2024 SERP, including updated protocols,
flowcharts, and sampling SOPs.
June 2025 Bassam
Alzammar
June 2025 9.5 Spill Trends New section describing how CIWQS data is used to analyze and graph annual spill trends;
references added appendices for visual aids.
June 2025 Bassam
Alzammar
June 2025 10.0 Internal
Audits
Expanded to include details on audit
procedures, staff feedback questionnaire, and
due dates for audit submission via CIWQS.
June 2025 Bassam
Alzammar
June 2025 11.3
Communication
with Satellite
and Connecting
Systems
New section referencing the Grand Terrace
sewer services agreement and coordination
efforts for SSMP alignment.
June 2025 Bassam
Alzammar
SSMP Element Metric Baseline Target Data Source Responsible Party Review Frequency Goals
Are SSMP goals being met? (e.g.,
reduced SSOs) Yes SSMP Audit Report
Environmental
Compliance Triennial Audit
Organization
% of staff trained on SSMP
responsibilities 100% Training Logs Collections Annually Legal Authority
Environmental
Compliance Annually
O&M Program % of system cleaned annually Cleaning Logs Collections Annually O&M Program Total SSOs per year CIWQS Reports Collections Annually Design &Performance
Provisions
# of new sewer plans reviewed
under City standards
All
applicble
projects
Engineering Plan
Review Records Engineering Annually
SERP Average SSO response time (min) <30 Field Reports Collections Monthly SERP
% of SSOs with post-spill
evaluations completed 100%
Post-Spill
Evaluation Forms Collections Annually
Sewer Pipe Blockage
Control Program % of FSEs inspected annually 100% Linko Environmental
Compliance Quarterly
Sewer Pipe Blockage
Control Program % of SSOs caused by FOG <25%
CIWQS/Spill
Reports
Environmental
Compliance Annually
System Evaluation and
Capacity Assurance
Plan
# of capacity evaluations
completed in last 5 years 5
Engineering
Capacity Studies Engineering Every 5 Years
Monitoring,
Measurement, and
Program
Modifications
% of SSMP elements reviewed this
year 100% SSMP Tracking Log
Environmental
Compliance Annually
SSMP Program Audits
Was SSMP audit completed on
schedule? Yes
SSMP Audit Files/
CIWQS
Environmental
Compliance Triennial
Communication
Program
# of public outreach materials
distributed annually 4 per year
Outreach
Documentation
Environmental
Compliance/
Collections Annually
City of Colton SSMP Evaluation Metrics Table Sample
Date Source SSMP Section Affected Finding or Issue Recommended Action Responsible Party Target Date Status Date Completed Notes 6/17/2025
SSMP
Update
11.1 - Public Notification of
Spills and Discharges
Colton currently does not have procedures to
communicate with the public for spills and
discharges resulting in closures of public areas, or
that enter a source of drinking water
Create an SOP in colaboration with the city's
department that manages their socila media; add
SOP to appendix 11; & update change log
ECD, Water
Department Fall 2025 Not started
6/17/2025
SSMP
Update
11.2 - Public Participation in
SSMP Development and
Updates
Colton did not involve the public during the
development of the SSMP.
Make the final SSMP publicly accessible by
uploading it to the City’s website. Share a social
media announcement informing the public that
they can submit feedback on the SSMP. Provide a
clear method for collecting public comments and
ensure they are forwarded to the appropriate
departments (e.g., Collections, ECD).
ECD, Water
Department Fall 2025 Not started
6/17/2025
SSMP
Update
7.1 - Public Education and
Outreach
Colton does not have public outreach materials
with a focus on pipe-blocking substances, other
than FOG.
Develop outreach materials & post on the city's
social media platforms.
ECD, Water
Department Fall 2025 Not started
Last Updated June 2025
City of Colton SSMP Tracking Log
City of Colton Sewer System Spill Summary Table 2022-2025 SSO Date Location Categrory Cause Volume Spilled Volume Recovered Percent Recovered Response Time 2/2/2022 Citrus Ave & 8th St 1
Private pump station failure
(beef jerky) 100 25 25.00% 20 min
12/17/2022 Sperry Ave 3 Pump station failure 200 75 37.50% 30 min 1/2/2023 1194 N. 10th St 3 Root intrudion (private lateral) 5 3 60.00% 15 min 2/11/2023 Sperry Ave & Valley Blvd 3
FOG Deposition - gravity main
line 300 100 33.33% 15 min
3/23/2023 Valley Blvd & 13th St 3
FOG Deposition - gravity main
line 10 8 80.00% 15 min
3/29/2023 E Steel Rd & W Hunts Lane 3 Vandalism 300 150 50.00% 15 min 11/27/2023 E Washington St & S Walin St 3
FOG Deposition - gravity main
line 200 180 90.00% 20 min
3/26/2025 Meridian Storm Basin 2 Vandalism 50000 50000 100.00% 15 min Last Updated June 2025
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System Performance Analysis Graphs (State Wide)
The following System Performance Analysis Graphs represent the enrolled system’s Category 1, 2, 3, and 4 total spill volume and total number of spills on a running 10-year basis. The Enrollee shall include these graphs in its Annual Report per section 5.11 of the General Order.
Click to Print This Page (Select Printer as Adobe PDF and Orientation as Landscape) 6/23/25, 11:07 AM California Integrated Water Quality System (CIWQS 100.0) - Build Number: mainTrunk.mm.dd.yyyy.1 https://ciwqs.waterboards.ca.gov/ciwqs/readOnly/publicReportSSOLine.xhtml 1/6
6/23/25, 11:07 AM California Integrated Water Quality System (CIWQS 100.0) - Build Number: mainTrunk.mm.dd.yyyy.1 https://ciwqs.waterboards.ca.gov/ciwqs/readOnly/publicReportSSOLine.xhtml 2/6
6/23/25, 11:07 AM California Integrated Water Quality System (CIWQS 100.0) - Build Number: mainTrunk.mm.dd.yyyy.1 https://ciwqs.waterboards.ca.gov/ciwqs/readOnly/publicReportSSOLine.xhtml 3/6
6/23/25, 11:07 AM California Integrated Water Quality System (CIWQS 100.0) - Build Number: mainTrunk.mm.dd.yyyy.1 https://ciwqs.waterboards.ca.gov/ciwqs/readOnly/publicReportSSOLine.xhtml 4/6
6/23/25, 11:07 AM California Integrated Water Quality System (CIWQS 100.0) - Build Number: mainTrunk.mm.dd.yyyy.1 https://ciwqs.waterboards.ca.gov/ciwqs/readOnly/publicReportSSOLine.xhtml 5/6
6/23/25, 11:07 AM California Integrated Water Quality System (CIWQS 100.0) - Build Number: mainTrunk.mm.dd.yyyy.1 https://ciwqs.waterboards.ca.gov/ciwqs/readOnly/publicReportSSOLine.xhtml 6/6
44 Appendix 10 - Internal Audits
Sewer System Management Plan Audit
Findings and Recommendations
January 27, 2025
Prepared by: G&G Environmental Compliance, Inc.
5053 La Mart Drive, Suite 203 Riverside, CA 92507
(951) 683-3538
2024 SSMP Audit
Introduction
This audit report evaluates the City of Colton’s Sewer System Management Plan (SSMP) and its implementation during the audit period of August 2, 2021, through August 2, 2024, in accordance with the requirements of the Reissued Order (Order 2022-0103-DWQ). The SSMP audit is conducted every three years to ensure compliance with the Reissued Order and must be submitted to the online California Integrated Water Quality System (CIWQS) Sanitary Sewer System Database no later than six months after the end of the audit period. This report is specific to the Colton Water Reclamation Facility Collection System (CS), CIWQS Place ID 631961, located in Region 8. The submission deadline for this audit report is February 2, 2025.
The SSMP serves as a comprehensive framework designed to ensure the effective management, operation, and maintenance of the City’s sanitary sewer system. Its primary goals are to prevent sanitary sewer overflows (SSOs), protect public health and the environment, and comply with state and federal regulations. The SSMP also outlines procedures to maintain adequate system capacity, address deficiencies, and respond to emergencies effectively. Internal audits, like this one, play a critical role in assessing the SSMP’s implementation, identifying deficiencies, and ensuring the plan remains effective and up to date.
This audit is an integral part of the City’s SSMP Update process, as required by the Reissued Order.
Per the Order, the City must update its SSMP at least every six years, incorporating all required elements, revisions based on audit findings, and other sewer system management-related changes. The next SSMP update for the City of Colton is due on August 2, 2025, and the findings and recommendations in this audit report will serve as the foundation for addressing deficiencies and making necessary improvements in the updated plan.
This audit evaluates the SSMP against the requirements of the Reissued Order, which introduced updated standards and expanded responsibilities for SSMP implementation. The audit assesses the City’s compliance, the effectiveness of SSMP elements in preventing SSOs, and the identification of necessary modifications to enhance system performance. The findings and recommendations outlined in this report aim to guide the City in maintaining a compliant and effective SSMP.
The City of Colton’s commitment to proactively managing its wastewater collection system through the SSMP ensures regulatory compliance, environmental protection, and the safeguarding of public health. This audit report is a key step in fulfilling those commitments and will support the development of a robust and updated SSMP for the City.
Compliance Status Categories include:
Compliant – No Changes necessary to existing program element or the procedures as currently implemented.
Compliant upon SSMP update – Compliant with adopted SSMP, however, some program or plan changes are needed to meet compliance with the Order. The changes are either Required Actions or Recommended Actions and typically indicate partial compliance with the Order. This Category also includes recommendations for updates to the Change Log to improve the relevance of the Plan prior to the Update deadline.
Non-compliant – Non-compliance occurs when the SSMP, or any of its elements, is not implemented, is ineffective in preventing spills, fails to meet the requirements of the Reissued Order, or does not address ongoing spills and discharges to state waters. Non-compliance will be documented in the audit report, which will include recommendations for corrective actions and will be submitted with the final Audit Report to the State Water Board via the CIWQS SSS Reporting Database.
Definitions and Abbreviations
Best Management Practice (BMP): Procedures or methods implemented to reduce or eliminate the discharge of pollutants into the sanitary sewer system, designed to protect water quality and prevent system blockages.
Capital Improvement Plan (CIP): A long-term plan that outlines infrastructure improvement projects, prioritizes investments, and allocates resources to maintain and enhance the sewer system's capacity and reliability.
California Integrated Water Quality System (CIWQS): An online database managed by the State Water Resources Control Board for reporting sanitary sewer overflows (SSOs), compliance data, and audit findings.
Closed Circuit Television (CCTV): A system used for inspecting the interior of sewer pipelines to assess their condition, identify blockages, and support maintenance and repair activities.
Collections Department: The municipal department responsible for operating, maintaining, and repairing the wastewater collection system, including pipelines, lift stations, and other appurtenances.
Element: A required component of the Sewer System Management Plan (SSMP), as outlined in the Reissued Order, which addresses specific aspects of sewer system management, such as operations, maintenance, and spill response.
Enforcement Response Plan (ERP): A document that defines procedures for responding to violations of sewer use regulations, including timelines for corrective actions and enforcement mechanisms.
Environmental Compliance Department (ECD): The municipal department tasked with enforcing sewer use ordinances, inspecting facilities, and implementing programs to prevent the discharge of harmful substances into the sewer system.
Fats, Oils, and Grease (FOG): Substances that can accumulate in sewer lines, causing blockages and sanitary sewer overflows (SSOs) if not properly managed.
Food Service Establishment (FSE): A facility that prepares and serves food, typically subject to inspections and FOG management requirements to prevent sewer system blockages.
General Order/Order/Reissued Order: Refers to Order 2022-0103-DWQ issued by the State Water Resources Control Board, which outlines updated requirements for the development, implementation, and auditing of SSMPs.
Greenbook: A widely recognized standard in California for public works construction, including specifications for the design, construction, inspection, and testing of sewer system infrastructure.
Industrial User: A facility or business that discharges non-domestic wastewater into the sanitary sewer system and is subject to monitoring and permitting under local pretreatment programs.
Legally Responsible Official (LRO): The individual designated by the City to certify SSO reports and ensure compliance with regulatory requirements under the Reissued Order.
Operation and Maintenance (O&M): The activities performed to ensure the sewer system operates efficiently and is properly maintained to prevent failures and overflows.
Regional Water Quality Control Board (RWQCB): One of nine regional boards in California responsible for protecting water quality and enforcing regulations within their designated region. The City of Colton is in Region 8.
Sanitary Sewer Overflow (SSO): Any spill, release, or discharge of untreated or partially treated wastewater from the sanitary sewer system to the environment.
Sewer System Management Plan (SSMP): A comprehensive plan developed by the City to ensure the proper management, operation, and maintenance of the sanitary sewer system to prevent SSOs and ensure regulatory compliance.
Sanitary Sewer System (SSS): The network of pipes, pump stations, and other infrastructure designed to collect and transport wastewater to a treatment facility.
Spill Emergency Response Plan (SERP): A document that outlines procedures for responding to and mitigating the impacts of SSOs, including notifications, containment, and cleanup.
SSMP Change Log: A record of revisions made to the SSMP, detailing updates based on audit findings, regulatory changes, or operational improvements.
Standard Operating Procedures (SOPs): Detailed, written instructions that describe how specific tasks related to the sewer system should be performed to ensure consistency and compliance.
State Water Resources Control Board (SWRCB): The California state agency responsible for setting statewide water quality policy and overseeing the implementation of sewer system management regulations.
Wastewater Master Plan (WMP): A strategic document that evaluates the current and future needs of the sewer system, identifies deficiencies, and recommends capital improvements to maintain capacity and reliability.
Element 1: SSMP Goal and Introduction – SSMP Sections
E: Executive Summary and Section 1: Purpose & Goals)
This audit section evaluates the City of Colton's SSMP goals to determine if they align with the objectives of the Order. The section reviews the goals’ ability to support the prevention of SSOs, minimize impacts to public health and the environment, and achieve regulatory compliance.
Compliance Status: Compliant Upon SSMP Update
Audit findings indicate that the City is largely meeting the requirement to include Element 1 in the SSMP. However, the current format may not clearly convey the overall regulatory context, SSMP update schedule, and sewer system asset overview in the introduction.
Findings:
Element 1.1 – Regulatory Context:
The SSMP provides a general description of the local sewer system in Section 4.2 – Collection System Overview and Section E.1 – Introduction. Program objectives are outlined in Section 1.0 – Purpose & Goals, which align with the objectives of the Order (Element 1). A detailed description of roles and responsibilities is included in Section 2.5, though this information is not presented in the narrative introduction section. Additionally, the SSMP introduces its programmatic elements in Section E.2 – Elements of the SSMP. While implementation efforts and actions are referenced throughout the document, such as in Section 2.5 – Roles & Responsibilities, the introduction lacks a dedicated discussion on SSMP implementation or the process for updating the plan.
Element 1.2 – SSMP Update Schedule:
Section E.3 includes a table outlining outdated regulatory deadlines, but it does not incorporate milestones for the activities addressing the prevention of sewer spills. However, preventative activities, such as sewer line cleaning and grease interceptor inspection frequencies, are addressed in various sections throughout the SSMP.
Element 1.3 – Sewer System Asset Overview:
An overview of the City’s sewer system assets is primarily found in Section 4.2, with supplemental information distributed throughout the SSMP. While the SSMP provides a reference to the City’s up-to-date sewer system map, this reference is not included in the Introduction section.
In summary, these findings indicate that the City is largely complying with the requirement to include these elements in the SSMP. However, the current format may not effectively communicate the overall regulatory context, SSMP update schedule, and sewer system asset overview to readers.
References:
• City of Colton SSMP, 2015 Revision
• Order 2022-0103-DWQ
• City of Colton Sewer Utility Index Maintenance Map
Recommendations:
Develop a Comprehensive SSMP Goal and Introduction Section. Include the following:
1. Regulatory Context:
a. Overview of the sewer system (size, scope, service area, population served, system age, and condition).
b. Program objectives.
c. Management structure, detailing departments, roles, and responsibilities for key activities:
2. Program components:
a. Briefly describe major components of the SSMP, such as O&M, FOG control, overflow response, and capacity assurance.
3. Implementation Overview:
a. Summarize key activities, procedures, and practices for each component, highlighting efforts to ensure program effectiveness.
4. SSMP Update Schedule:
a. Outline conditions that may trigger an unscheduled update such as major changes in the sewer system, significant SSOs that indicate a deficiency in the current SSMP, and regulatory changes or updates to the Order. b. Combine the schedule for audits, updates and milestones for incorporation of activities addressing prevention of SSOs into a table (such as the one below) for clarity.
Activity Frequency Responsible Party Milestone
SSMP Updates Every 6 years Environmental
Compliance
Department
Next update by
August 2031
Internal Audits Every 3 years Environmental
Compliance
Department
Next audit by
February 2028
Preventive
Maintenance
Annually Collections
Department
Clean 110 miles of
sewer lines
CCTV
Inspections
20% of
system per
year
Collections
Department
Inspect
approximately 22
miles/year
FOG Control
Program
Semi-annually Environmental
Compliance
Department
Inspect all food
service
establishments
Capital
Improvement
Program
As per SECAP
schedule
Engineering Division Complete identified
high-risk projects
Training for SSO
response
Annually Collections
Department
Supervisor
Conduct training by
December each year
5. Sewer System Asset Overview with a reference to the City’s up-to-date map of its sanitary sewer system.
Element 2: Organization – SSMP Section 2: Organization
This audit section assesses the City of Colton’s organizational structure, including roles and responsibilities, chain of communication, and personnel assignments as outlined in the SSMP. The evaluation ensures that the organization supports efficient implementation and response to prevent SSOs and maintain compliance with the Order
Compliance Status: Compliant Upon SSMP Update
The audit found that the City’s SSMP Organization section is largely compliant with the Order but would benefit from updates to key information, including contact details, organizational charts, regulatory deadlines, chains of communication, and the name of the Legally Responsible Official (LRO).
Findings:
An evaluation of the City’s SSMP Organization section revealed outdated or incorrect contact information, including phone numbers. Additionally, regulatory deadlines within the SSMP are outdated, suggesting that periodic updates were not conducted or that these sections were overlooked during the 2015 revision. Furthermore, Table 2-3 (Chain of Communication) does not align with a similar table in the updated SERP, and the SSMP Organizational Chart requires updates. While the SSMP includes most elements required under Element 2, it lacks the name of the LRO and email addresses for positions responsible for implementing specific SSMP elements.
References:
• SSMP, City of Colton, 2015 Revision
• Order 2022-0103-DWQ
Requirements:
To achieve full compliance with the Order, the City must include the following elements in the SSMP during its next update:
1. The name of the Legally Responsible Official as required in section 5.1 (Designation of a Legally Responsible Official) of the Order and
2. email addresses for management, administrative, and maintenance positions responsible for implementing specific SSMP elements.
Recommendations:
Add a second or third LRO so that if the current LRO is unavailable, notification and reporting requirements aren't delayed.
Element 3: Legal Authority – SSMP Section 3: Legal
Authority
This audit section examines the legal authority established by the City of Colton to enforce sewer use ordinances, require proper design and construction, prohibit illicit discharges, and ensure compliance with pretreatment and other regulatory programs. The review focuses on the adequacy of the legal mechanisms to prevent SSOs and unauthorized discharges.
Compliance Status: Compliant Upon SSMP Update
Once the legal authority documents in this section are updated with the most current versions, this portion of the SSMP will be largely compliant with the Order. The only remaining requirement will be the inclusion of a document addressing the coordination of spill response, access to storm sewer systems, and prevention of cross-connections.
Findings:
Legal authority to prohibit illicit discharges is provided through Ordinance No. O-02-15; however, a more recent ordinance has been published. The SSMP includes the City’s outdated Enforcement Response Plan (ERP) in Appendix D and standard drawings from 2003 in Appendix E, despite a newer version being available from 2024.
Upon updating the documents, the SSMP will address most of the required elements of Element 3; however, it will still lack service agreements or legally binding procedures to demonstrate legal authority for coordinating emergency spill responses, ensuring access to storm sewer systems, and preventing cross-connections. Even though Colton owns its storm sewer system, documenting internal coordination and prevention measures is crucial to comply with the Order, demonstrate due diligence, and provide clear guidance for emergency response teams. These proactive measures also help mitigate risks and reduce liability from potential cross-system contamination.
References:
• City of Colton SSMP, 2015 Revision
• Order 2022-0103-DWQ
• Sewer Use Ordinance No. O-03-19
• Enforcement Response Plan, R-09-15
• Standards & Specifications, 2003
Requirements:
To achieve full compliance with the Order, the City’s SSMP must include copies or an electronic link to the City’s current sewer system use ordinances, service agreements and/or other legally binding procedures to demonstrate the City possesses the necessary legal authority to:
1. 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.
Recommendations:
G&G provides the following recommendations to the City in preparation for the upcoming update to the SSMP. These recommendations are linked to the previously mentioned requirements, as specified:
1. In relation to Requirement 1 above, the City may want to:
a. Establish internal collaborations between the Collections Department and the department/division responsible for the storm sewer system to ensure familiarity with the storm sewer system amongst Collections staff for efficient emergency spill response.
b. Ensure Access to Storm Sewer Systems: Ensure that field crews responsible for spill response have access to storm sewer system infrastructure, such as storm drains, outfalls, and basins, during emergencies. Additionally, equip spill response teams with tools to quickly block or divert flows to prevent contamination of stormwater infrastructure.
c. Prevent Cross-Connections: Reference GIS mapping used to verify that sanitary sewer infrastructure is not inadvertently connected to stormwater infrastructure. d. Documentation in the SSMP: Document these coordination efforts and internal protocols in the SSMP, demonstrating compliance with the Order’s requirement to coordinate emergency spill response and prevent cross-connection.
2. Provide the updated versions of the legal authority documents currently in the SSMP, such as Ordinance No. O-03-19, Resolution No. R-09-15, and the Standard Drawings published in 2024.
3. Ensure a process is in place to update the SSMP with the implementation of the Change Log.
Element 4: Operation and Maintenance Program – SSMP
Section 4: Operations and Maintenance Program
This audit section evaluates the implementation and effectiveness of the City of Colton's Operation and Maintenance (O&M) program. The review focuses on preventive and corrective maintenance practices, condition assessments, rehabilitation plans, and measures to ensure long-term system reliability and prevent SSOs.
Compliance Status: Compliant Upon SSMP Update
The City is largely compliant with the SSMP’s requirements, including system cleaning, inspections, and lift station maintenance. However, the SSMP contains inaccuracies, such as outdated equipment lists, the absence of SSO plotting, and a lack of SWRCB-certified staff.
Additionally, the SSMP does not address new Order requirements, including training, SERP procedures, spill volume estimation, CIWQS reporting, and higher-frequency inspections of problem areas.
Findings:
A review of the City’s maintenance logs confirmed that the Collections Department is cleaning the entire sewer system annually, as outlined in the SSMP. Records also show that the City inspects the entire sewer line system every 3-5 years using CCTV technology, which includes inspections of manholes and lift stations. The audit found that the City continues to use a manual/physical method for scheduling work orders, which has proven effective in ensuring timely repairs to sewer system components. Preventive maintenance measures and redundancies at the sewer lift stations, as described in the SSMP, are being implemented. These include standby pumps at each lift station, regular inspections, and the use of both stationary and mobile power generators. Although the City’s CCTV vehicle was stolen in early 2024, plans are in place to purchase a replacement in 2025. Additionally, training logs indicate that the City is providing training related to spill response, equipment management, and power loss.
However, the audit identified several inaccuracies in the SSMP and areas where the City is not implementing procedures as stated. For example, the City no longer contracts a company for sewer cleaning; this is now performed in-house by the Collections Department. There was no evidence that SSOs are being plotted as described in the SSMP, and Collections Department personnel do not possess SWRCB certification. Furthermore, the list of equipment and replacement parts in the SSMP is outdated.
The City’s SSMP addresses a substantial portion of the requirements outlined in the Reissued Order but is missing critical elements necessary for full compliance. Details of the missing elements are outlined in the 'Requirements' section below References:
• City of Colton SSMP, 2015 Revision
• Order 2022-0103-DWQ
• City of Colton Sewer Utility Index Maintenance Map
• City of Colton Collection Maintenance Logs
• City of Colton Station Maintenance Logs
Requirements:
To achieve full compliance with the Order, the City must include in its SSMP:
1. A scheduling system that includes higher-frequency inspections and maintenance of known problem areas, including areas with tree root problems and
2. Training provided on a regular basis for sanitary sewer system operations and maintenance staff and contractors. The training must cover:
a. The requirements of the General Order;
b. The City’s SERP procedures and practice drills;
c. Skilled estimation of spill volume for field operators; and d. Electronic CIWQS reporting procedures for staff submitting data.
Recommendations:
G&G provides the following recommendations to the City in preparation for the upcoming update to the SSMP:
1. Remove language from the SSMP stating that sewer line cleaning is contacted out.
2. Begin plotting SSOs through the City’s GIS system. Coordinate with the City’s GIS department for smooth communication after the occurrence of potential future SSOs.
3. Indicate that Collections Department personnel possess certifications from the CWEA rather than the SWRCB.
4. Update the list of equipment and replacement parts in the SSMP:
a. 2 combination trucks, 2 service trucks, 1 spill response trailer, 1 backhoe, 1 4-inch Godwin bypass pump, etc.
5. Provide a schedule for inventorying the spill response trailer and ensuring that the items are in good working condition.
Element 5: Design and Performance Provisions – SSMP
Section 5: Design and Performance Provisions
This audit section reviews the City of Colton’s design and performance provisions to ensure sewer system infrastructure is constructed and maintained according to appropriate standards. The evaluation includes new and rehabilitated assets and assesses their role in reducing SSOs.
Compliance Status: Compliant Upon SSMP Update
The audit found that the City is largely implementing the Design and Performance Provisions but does not include inspection and testing procedures or their sources in the SSMP. Additionally, while contractors perform CCTV inspections for new sewer tie-ins, this is not clearly reflected in the SSMP.
Findings:
The audit found that the City is largely implementing the Design and Performance Provisions procedures outlined in its SSMP. Records show that City inspectors document on-site sewer project inspections to verify that installations meet approved standards. Documentation also confirmed testing for inflow and infiltration in new sewer manholes. Additionally, the City continues to use and update its Standard Drawings and the Greenbook to design and review sewer construction plans, ensuring compliance and proper sewer system operation.
However, while the SSMP states that the City conducts CCTV inspections for new sewer tie-ins, the audit found that this task is performed by contractors, who must provide footage to pass inspection. Lastly, the audit revealed that while the City has procedures for inspecting and testing sewer system components, these procedures and their sources are not included in the SSMP.
References:
• City of Colton SSMP, 2015 Revision
• Order 2022-0103-DWQ
• City of Colton Standard Drawings. Retrieved from:
https://www.ci.colton.ca.us/DocumentCenter/View/6664/City-of-Colton-WaterStandards • Standard Specifications for Public Works Construction ("Greenbook"), 2024 Edition.
Published by Public Works Standards, Inc.
Requirements:
To achieve full compliance with the Order, the City must include in its SSMP Procedures and standards for the inspection of newly constructed, newly installed, repaired, and rehabilitated system pipelines, pumps, and other equipment and appurtenances.
Recommendations:
Update the SSMP to explicitly state that the Standard Specifications for Public Works Construction ("Greenbook"), 2024 Edition is also used as the standard for inspection procedures of newly constructed, installed, repaired, and rehabilitated sewer system components.
Element 6: Spill Emergency Response Plan – SSMP
Section 6: Overflow Emergency Response Plan
This audit section evaluates the City of Colton's Overflow Emergency Response Plan (OERP) for its ability to effectively detect, respond to, mitigate, and report SSOs. The review assesses the plan's implementation in reducing response time and minimizing impacts to public health and the environment.
Compliance Status: Compliant
The City’s SERP meets the requirements of the Order, including integration into the SSMP and proper documentation of SSOs during the audit period. Contact information is current, and SERP implementation is effective in protecting public health, mitigating spills, and ensuring timely reporting. However, the City lacks records of post-spill evaluations or debriefing meetings, and FOG control measures need improvement based on CIWQS data.
Findings:
The City’s Spill Emergency Response Plan (SERP) was updated in June 2023 to meet the recent requirements of the Order, with additional clarifying modifications made in August 2024. The latest version of the SERP was integrated into the SSMP in September 2024, with all changes documented in the SSMP Change Log in Appendix K.
The audit found that the SERP includes all required elements outlined in Attachment D of the Order. A review of records confirmed that all SSOs during the audit period were properly documented and certified on CIWQS in a timely manner, complying with the Order’s reporting requirements. Contact information in the SERP was found to be accurate and up to date.
Additionally, the City has been implementing the SERP effectively, contacting appropriate personnel, documenting key details, protecting public health, recovering spilled material, and thoroughly cleaning spill areas. SERP training records were also provided during the audit.
However, no records were found for post-spill evaluations or debriefing meetings.
CIWQS data indicates that seven spills were reported during the audit period (August 2, 2021 – August 2, 2024). Of these, two occurred on private property, one was caused by a lift station pump failure, and three were due to FOG buildup in gravity mains. Spill volumes ranged from 5 to 300 gallons, with an average operator response time of 18 minutes. This data highlights the need for improvement in FOG control measures. Despite this, the SERP appears to be effective in responding to and mitigating spills.
References:
• City of Colton SSMP, 2015 Revision
• Order 2022-0103-DWQ
• City of Colton SERP, 2023 Revision
• City of Colton SSMP Change Log
• City of Colton SSMP Training Logs
• CIWQS Data, 8/2/21-8/2/24
Recommendations:
G&G provides the following recommendations to the City in preparation for the upcoming update to the SSMP:
1. Document post-spill assessments/debriefing meetings. Include personnel present, topics discussed, meeting date, meeting duration, and any conclusions/changes made to SSMP or SERP as a result.
2. Notify the Environmental Compliance Department whenever an SSO is caused by FOG deposition or other pipe-blocking substances, allowing the department an opportunity to identify and address the source if feasible. Ensure communications are documented through email.
Element 7: Sewer Pipe Blockage Control Program – SSMP
Section 7: Fats, Oils, and Grease Control Program
This audit section assesses the City of Colton's FOG Control Program, including strategies to identify, inspect, and address FOG-related issues. The evaluation focuses on program implementation, enforcement efforts, and effectiveness in reducing FOG-related SSOs.
Compliance Status: Compliant Upon SSMP Update
The audit found that the City and its ECD are largely adhering to SSMP procedures, exceeding inspection requirements and distributing educational materials. However, the SSMP lacks verification for chemical agent use, review of plumbing plans, and includes outdated references.
It also does not meet Reissued Order requirements for a plan to address pipe-blocking substances, FOG-prone sections, and cleaning schedules.
Findings:
An audit of the City’s FOG Control Program, as outlined in the SSMP, found that the City and its Environmental Compliance Department (ECD) are largely adhering to the procedures detailed in this section. For instance, the SSMP specifies that the ECD conducts annual inspections of food service establishments (FSEs), but inspection records reveal that the ECD consistently exceeds this requirement by performing inspections semi-annually. Additionally, the audit confirmed that the ECD distributes educational materials, such as BMP posters, during inspections, with these activities documented through inspection reports and/or Linko, the City’s compliance tracking software.
However, several discrepancies were identified during the audit. The audit could not confirm that ECD inspectors routinely check for the use of bacterial, enzymatic, or chemical agents by FSEs to dissolve, emulsify, or suspend FOG. Furthermore, the SSMP states that the ECD reviews wastewater questionnaires, permit applications, and plumbing plans, but in practice, the ECD only reviews permit applications provided to Industrial Users by the department, with no access to plumbing plans or wastewater questionnaires. Additionally, the ECD is not involved in inspecting grease interceptor installations, as stated in the SSMP. The SSMP also indicates that when heavy or excessive FOG or other obstructing substances are discovered, a report should be forwarded to the ECD for investigation; however, this communication between the Collections Department and the ECD is currently not occurring. Moreover, while the SSMP identifies grease traps as an acceptable form of FOG treatment, it does not reflect that the County Health Department has largely prohibited indoor grease traps. Lastly, this section references an outdated ordinance.
In terms of compliance with the Reissued Order, the City’s FOG Control Program section is missing several required elements necessary for full compliance. Details of these missing elements are provided in the 'Requirements' section below.
References:
• City of Colton SSMP, 2015 Revision
• Order 2022-0103-DWQ
• City of Colton Website: Fats, Oils, and Grease (FOG). Retrieved from https://www.ci.colton.ca.us/654/Fats-Oils-and-Grease
• ECD Inspection Reports, 8/2/2021-8/2/2024
Requirements:
To achieve full compliance with the Order, the City must include the following in its SSMP:
1. 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;
2. Authority to inspect grease producing facilities, enforcement authorities, and whether the City has sufficient staff to inspect and enforce the fats, oils, and grease ordinance;
3. An identification of sanitary sewer system sections subject to fats, oils, and grease blockages and establishment of a cleaning schedule for each section; and
4. Implementation of source control measures for all sources of fats, oils, and grease reaching the sanitary sewer system for each section identified above.
Recommendations:
G&G provides the following recommendations to the City in preparation for the upcoming update to the SSMP. These recommendations are linked to the previously mentioned requirements, as specified:
1. In relation to Requirement 1 above, reach out to the known FOG waste haulers and confirming that their method of disposal complies with all applicable laws and regulations.
A hauler/disposal site list can then be included in the SSMP.
2. In relation to Requirement 2 above, indicate that Ordinance No. O-03-19 provides the authority to inspect grease producing facilities and enforcement authorities. Additionally, make a statement of the 3 inspectors available to inspect FSEs and enforce the Ordinance.
3. In relation to Requirement 3 above, include a table describing the hotspots in the City’s sewer system and a cleaning schedule for each.
4. In relation to Requirement 4 above, utilizing the table described above, develop a plan of increased inspection frequency at upstream FSEs if necessary.
5. Conduct and document training for inspectors. Ensure that FSEs receive a comprehensive annual inspection, during which inspectors will verify BMP implementation and check for the use of bacterial, enzymatic, or chemical agents intended to dissolve, emulsify, or suspend FOG.
6. Rename this section to “Sewer Pipe Blockage Control Program” to reflect the reissued Order.
7. Develop a plan and schedule for implementing a public education and outreach program to promote proper disposal of pipe-blocking substances, targeting residential users in Colton.
Element 8: System Evaluation, Capacity Assurance and
Capital Improvements – SSMP Section 8: System
Evaluation and Capacity Assurance Plan
This audit section reviews the City of Colton's System Evaluation and Capacity Assurance Plan (SECAP). The assessment focuses on the identification of capacity deficiencies, hydraulic modeling, and implementation of capital improvements to ensure the system can accommodate current and future flows and prevent SSOs.
Compliance Status: Compliant Upon SSMP Update
The audit found this section outdated, referencing a 1997 Wastewater Master Plan instead of the 2016 Sewer Master Plan. While no capacity issues exist, delays in completing key CIP projects may hinder the City’s ability to meet SSMP and Reissued Order objectives.
Findings:
An audit of the City’s SSMP System Evaluation, Capacity Assurance, and Capital Improvements section found it to be largely outdated. The SSMP references a 1997 Wastewater Master Plan, though a 2016 Sewer Master Plan is now available. While the SSMP states that the City was not experiencing capacity-related problems, the audit confirmed that this remains accurate.
The audit reviewed the 2015-2023 Capital Improvement Plan (CIP) and found that several key projects remain incomplete, with progress hindered by funding and development constraints.
These delays may impact the City’s ability to address capacity needs, correct system deficiencies, and meet the objectives of the SSMP and the Reissued Order.
References:
• City of Colton SSMP, 2015 Revision
• Order 2022-0103-DWQ
• City of Colton 2015-2023 Capital Improvement Plan
• City of Colton 2016 Sewer Master Plan
Requirements:
To achieve full compliance with the Order, the City’s SSMP must include:
1. Procedures to routinely evaluate the sanitary sewer system assets utilizing the best practices and technologies available.
2. Identify and justify the amount (percentage) of its system for its condition to be assessed each year.
Recommendations:
G&G offers the following recommendation ahead of the scheduled SSMP update:
1. In relation to Requirement 1 above, the City should establish a schedule to periodically evaluate system capacity to ensure no emerging capacity-related problems are overlooked.
2. In relation to Requirement 2 above, the City should identify a reasonable percentage of the sewer system to be condition-assessed annually, based on system size, age, and risk factors. Justify the selected percentage using historical data and industry standards, and include it in the SSMP.
3. Replace references to the 1997 Wastewater Master Plan with the 2016 Sewer Master Plan and ensure all information is current and relevant.
4. Create a new or updated CIP to replace the 2015-2023 plan, prioritizing incomplete projects and including timelines, funding strategies, and contingency plans.
5. Explore additional funding sources, such as state or federal grants, to address delays in critical sewer projects and ensure timely implementation.
6. Implement a process to regularly review, update, and report on CIP progress to maintain transparency and alignment with SSMP objectives.
Element 9: Monitoring, Measurement, and Plan
Modifications – SSMP Section 9: Monitoring,
Measurement, and Plan Modifications
This audit section evaluates the City of Colton's approach to monitoring and measuring SSMP implementation and effectiveness. The review includes data collection, trend analysis, and program adjustments to ensure continuous improvement and compliance with the Order.
Compliance Status: Non-compliant
The audit found that while the SSMP outlines procedures for monitoring implementation and effectiveness, there is no evidence these procedures are being followed. Additionally, the SSMP does not address maintaining relevant information for prioritizing activities, updating procedures, or identifying and illustrating spill trends
Findings:
An audit of the City’s Monitoring, Measurement, and Program Modifications section of the SSMP revealed that while the SSMP outlines procedures for monitoring the implementation and effectiveness of each SSMP element, as well as assessing the success of preventive operation and maintenance activities, no evidence was available to confirm these procedures are being followed.
The audit found that the SSMP is missing key elements necessary for full compliance, including those related to maintaining relevant information, updating procedures, and identifying spill trends. Details of these missing elements are outlined in the 'Requirements' section below.
References:
• City of Colton SSMP, 2015 Revision
• Order 2022-0103-DWQ
Requirements:
To achieve full compliance with the Order, the City’s SSMP must include an Adaptive Management section that addresses SSMP implementation effectiveness and the steps for necessary SSMP improvement, including:
1. Maintaining relevant information, including audit findings, to establish and prioritize appropriate Plan activities;
2. Updating Plan procedures and activities, as appropriate, based on results of monitoring and performance evaluations; and
3. Identifying and illustrating spill trends, including spill frequency, locations and estimated volumes.
Recommendations:
G&G provides the following recommendations to the City in preparation for the upcoming update to the SSMP.
1. In relation to Requirement 1 above, implement a centralized system, such as a database or tracking software, to document and organize audit findings, system evaluations, and other relevant information for establishing and prioritizing Plan activities.
2. In relation to Requirement 2 above, develop a schedule to periodically review and update SSMP procedures and activities based on monitoring results, performance evaluations, and identified deficiencies.
3. In relation to Requirement 3 above, use GIS tools or other data visualization methods to track and illustrate spill trends, including frequency, locations, and estimated volumes, to identify problem areas and guide preventive measures.
4. Element 2: Organization requires the City to specify position titles for management, administrative, and maintenance roles responsible for implementing specific SSMP elements. When updating the SSMP, ensure the position titles for personnel overseeing monitoring, measurement, and program modification are included in this section. Assign responsibility for these tasks to designated staff to prevent gaps in this critical process.
Element 10: Internal Audits – SSMP Section 10: SSMP
Program Audits
This audit section examines the City of Colton’s SSMP audit process, including the frequency, scope, and findings of previous audits. The evaluation ensures that audits are conducted in accordance with the Order and that identified deficiencies are addressed through corrective actions.
Compliance Status: Non-compliant
The SSMP’s Program Audits section outlines effective procedures for internal audits, but the lack of review or updates since 2015 indicates non-compliance with the Reissued Order's requirements for regular assessment and updates.
Findings:
The City’s Program Audits section of the SSMP outlines solid procedures for conducting internal audits. If implemented, these procedures would effectively assess the SSMP’s implementation and effectiveness in preventing spills, evaluate the City’s compliance with the Reissued Order, identify deficiencies in addressing ongoing spills, and recommend necessary modifications to correct those deficiencies, as required by the Order. However, it is evident that the SSMP has not been reviewed or updated since 2015.
References:
• City of Colton SSMP, 2015 Revision
• Order 2022-0103-DWQ
Requirements:
The City shall conduct an internal audit of its SSMP, and implementation of its SSMP, at a minimum frequency of once every three years. The audit must be conducted for the period after the end of the City’s last required audit period. Within six months after the end of the required 3-year audit period, the Legally Responsible Official shall submit an audit report into the online CIWQS Sanitary Sewer System Database per the requirements in section 3.10 (Sewer System Management Plan Audit Reporting Requirements) of Attachment E1 of the General Order.
In alignment with this requirement, the current audit covers the period from August 2, 2021, to August 2, 2024, with the audit report due by February 2, 2025. The next audit period will span from August 3, 2024, to August 2, 2027, with the corresponding audit report due by February 2, 2028.
Recommendations:
G&G provides the following recommendations to the City in preparation for the upcoming update to the SSMP.
1. Create a clear schedule for internal audits, ensuring they are conducted every three years as required by the Order.
2. Designate a Legally Responsible Official (LRO) or specific staff member responsible for initiating, overseeing, and completing audits.
3. Revise the Program Audits section of the SSMP to reflect current audit requirements, including the need for regular updates, submission deadlines, and specific procedures for assessing SSMP implementation and effectiveness.
4. Develop a consistent method for documenting audit activities, findings, and corrective actions. Maintain these records in a centralized system to support future audits and facilitate reporting to the Water Boards.
5. Implement a process to monitor progress on corrective actions identified in the audit.
Element 11: Communication Program – SSMP Section 11:
Communication Program
This audit section evaluates the City of Colton's Communication Program to determine its effectiveness in promoting public awareness and engaging stakeholders, including the public, contractors, and agencies. The review focuses on the program’s role in supporting SSMP implementation and compliance.
Compliance Status: Compliant Upon SSMP Update
The City’s Communication Program requires updates to ensure full implementation as outlined in the SSMP. Key outreach methods, such as billing inserts and brochures, are not utilized, and website content and documents need revisions. Additionally, the SSMP is missing required elements from the Reissued Order.
Findings:
An evaluation of the City’s Communication Program, as outlined in the SSMP, revealed opportunities for improvement, including the need to update the program and designate personnel to ensure its effective implementation. While the SSMP states that billing inserts and brochures are used to communicate with residential and commercial customers about SSOs and managing Fats, Oils, and Grease (FOG), it appears these methods are not currently being utilized.
The SSMP identifies the City’s website as a source of critical information related to the SSMP.
However, a review of the website and its documents found that some sections, along with materials like the FOG Control Program Document, could benefit from updates. On a positive note, the audit confirmed that ECD inspectors are distributing essential information to commercial and industrial facilities during inspections, as outlined in the SSMP.
The audit also found that the SSMP is missing key elements required by the Reissued Order, as detailed in the “Requirements” Section below.
References:
• City of Colton SSMP, 2015 Revision
• Order 2022-0103-DWQ
• City of Colton Website: Fats, Oils, and Grease (FOG). Retrieved from https://www.ci.colton.ca.us/654/Fats-Oils-and-Grease
• Fats, Oils, & Grease (Fog) Control Program Document. Retrieved from https://www.ci.colton.ca.us/DocumentCenter/View/587