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PART 1 – EXECUTIVE SUMMARY Sewer System Management Plan Audit (8/2/21 to 8/2/24) Page 2 of 47 SSMP AUDIT REQUIREMENTS This sec[on provides details about the SSMP Audit requirements mandated by the Reissued WDR. A SSMP is a spill reduc[on/mi[ga[on plan that lays the founda[on for how an agency implements its work programs, assesses effec[veness of its maintenance program, and provides resilience to bounce-back from emergencies, upsets, and scru[ny by regulators conduc[ng a Compliance Evalua[on Inspec[on (CEI) or formal spill inves[ga[on. The Reissued WDR includes the following specific requirements for comple[on of SSMP Internal Audits: Specifica[ons 5.4 (Sewer System Management Plan Audits, page 19): “The Enrollee shall conduct an internal audit of its Sewer System Management Plan, and implementa<on of its Plan, at a minimum frequency of once every three years. The audit must be conducted for the period aAer the end of the Enrollee’s last required audit period. Within six months a,er 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 sec<on 3.10 (Sewer System Management Plan Audit Repor<ng Requirements) of ARachment E1 of this General Order. Audit reports submiRed to the CIWQS Sanitary Sewer System Database will be viewable only to Water Boards staff. The internal audit shall be appropriately scaled to the size of the system(s) and the number of spills. The Enrollee’s sewer system operators must be involved in comple<ng the audit. At minimum, the audit must: • Evaluate the implementa<on and effec<veness of the Enrollee’s Sewer System Management Plan in preven<ng spills. • Evaluate the Enrollee’s compliance with this General Order. • Iden<fy Sewer System Management Plan deficiencies in addressing ongoing spills and discharges to waters of the State; and • Iden<fy necessary modifica<ons to the Sewer System Management Plan to correct deficiencies. The Enrollee shall submit a complete audit report that includes: • Audit findings and recommended correc<ve ac<ons. • A statement that sewer system operators’ input on the audit findings has been considered; and • A proposed schedule for the Enrollee to address the iden<fied deficiencies.” AIachment D-10 (Internal Audits, page D-10): The Plan shall include internal audit procedures, appropriate to the size and performance of the system, for the Enrollee to comply with sec<on 5.4 (Sewer System Management Plan Audits) of this General Order.” ATTY/RESO.0077/CC RESO SEWER SYSTEM MANAGEMENT PLAN - EXHIBIT A REV: 07-14-25 LF Page 172 of 317