FROM: Robert Thompson, General Manager
Originator: Lan C. Wiborg, Director of Environmental Services
SUBJECT:
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ORANGE COUNTY SANITATION DISTRICT'S 2025 SEWER SYSTEM MANAGEMENT PLAN
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GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION: Recommend to the Board of Directors to:
Approve the Orange County Sanitation District's 2025 Sewer System Management Plan (SSMP) as required by the Statewide Sanitary Sewer Systems General Order 2022-0103-DWQ.
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BACKGROUND
The Statewide Sanitary Sewer Systems General Order 2022-0103-DWQ (2022 Order) requires wastewater agencies to develop a SSMP to reduce sanitary sewer overflows and establish consistent sewer system management practices across California.
Orange County Sanitation District (OC San) has been operating under the current 2021 SSMP for approximately four years. The 2022 Order requires that the SSMP be updated, approved, and uploaded to the California Integrated Water Quality System (CIWQS) Sanitary Sewer System Database by May 2, 2025. Additionally, it must be posted on OC San's website for public access.
The 2022 Order introduces new requirements, including descriptions of the closed-circuit television inspection program, inter-agency cooperation, and an assessment of the effectiveness of the Spill Emergency Response Plan. Therefore, OC San hired an independent third party to conduct a comprehensive review to ensure that the 2025 SSMP complies with the Order and reflects OC San's current practices.
RELEVANT STANDARDS
* 24/7/365 treatment plant reliability
* Comply with environmental permit requirements
* Meet or surpass sanitary sewer overflow regulations
* Maintain a proactive asset management program
* Achieve less than 2.1 sewer spills per 100 miles
* Protect public safety
PROBLEM
The 2022 Order requires a Board-approved SSMP every four years.
PROPOSED SOLUTION
Approve OC San's 2025 SSMP for certification and uploading to the CIWQS Sanitary Sewer System Database.
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