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ATTACHMENT D <br /> SANITARY SEWER OVERFLOW—WATER QUALITY MONITORING PROGRAM <br /> This procedure is intended to comply with SWRQB requirements for surface water monitoring <br /> and reporting in the event of a spill greater than 50,000 gallons to surface water. It will outline <br /> the basic steps to be taken by City personnel. Additional steps may be necessary in some cases. <br /> The procedures must be used with common sense based on experience with the Collection <br /> System and applicable regulatory provisions. <br /> Surface water monitoring and reporting is conducted by the Environmental Services Division of <br /> the Operations Services Department or specified alternate for spills to surface waters with a <br /> volume greater than 50,000 gallons. <br /> PROCEDURES: <br /> I. WATER QUALITY MONITORING <br /> A. In the event of a spill to surface waters with a volume greater than 50,000 gallons, the <br /> Environmental Compliance Supervisor, Chief Utility System Operator, Environmental <br /> Services Manager, Utilities Division Superintendent, or highest ranking Utility Division <br /> crew member on duty, shall begin field monitoring of stream or channel affected by <br /> spill. <br /> B. The Duty Operator or alternate (equipped with a DO meter, thermometer, and sample <br /> collection containers) is dispatched to the spill site for sampling and analysis as soon as <br /> can be safely and practically dispatched. Ideally, the sampling shall initiate within four <br /> hours. In no event should the testing be delayed beyond 48 hours of becoming aware of <br /> the SSO. <br /> C. The Duty Operator or other responder establishes upstream and downstream sampling <br /> sites as appropriate based on site conditions (location of safe site access). If the <br /> waterway's source is well above the spill location and all access is safe, the upstream <br /> location shall be 100' upstream of the spill. In a case where the source of the waterway <br /> is within 100', the sample shall be taken as far upstream as allowed. The following in- <br /> stream analyses are completed for each sample site using analytical instrumentation: <br /> 1. Dissolved Oxygen(DO) <br /> 2. Temperature <br /> A sample should be taken to the OSC and stored in the lab refrigerator and run for <br /> Ammonia as soon as possible. <br /> Sampling for Enteric Virus and Coliform require Special techniques and handling. <br /> Utilities personnel should make arrangements with DSRSD or City of Livermore labs <br /> for these tasks <br /> 51 1Page <br />