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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. 94- <br /> CHEVRON PIPE LINE COMPANY <br /> DIVIDEND PROPERTY <br /> SAN JOA UIN COUNTY <br /> Prior to construction, plans and specifications for ground water monitoring and/or extraction wells <br /> shall be submitted to Board staff for review and approval. After construction, new wells are to be <br /> sampled and analyzed for the constituents below and added to the monitoring program. <br /> GROUND WATER MONITORING <br /> There are nine operable ground water monitoring wells (MWs) as shown in Attachment 1. The D <br /> remaining wells have been abandoned. MWs with free phase petroleum product or visible sheen <br /> shall be monitored for product thickness and depth to ground water only. The ground water <br /> monitoring program for the nine monitoring wells, and any additional wells installed subsequently, <br /> except for wells containing free phase petroleum product or visible sheen, shall include the <br /> following: <br /> Constituents' Units Sample Test Sampling <br /> Preparation Method Frequency <br /> Free Product Thickness inches — — Quarterly <br /> Depth to Ground Water Feet — — Quarterly <br /> Benzene µg/1 5040/50302 EPA 8020 Quarterly <br /> Toluene µg/1 5040/50302 EPA 8020 Quarterly <br /> Ethylbenzene µg/1 5040/50302 EPA 8020 Quarterly <br /> Xylene 14g/l 5040/50302 EPA 8020 Quarterly <br /> Polynuclear Aromatic µg/1 3510/3520 EPA 8310 Quarterly <br /> Compounds (PNAs) <br /> TPH as Gasoline mg/l 5040/50302 Modified 8015 Quarterly <br /> TPH as Kerosene mg/1 5040/50302 Modified 8015 Quarterly <br /> TPH as Diesel No. 2 mg/1 5040/50302 Modified 8015 Quarterly <br /> TPH as Diesel No. 4 mg/1 5520035103 Modified 8015 Quarterly <br /> TPH as Weathered Crude mg/1 5520035103 Modified 8015 Quarterly <br /> Total Recoverable mg/1 5520F/35103 EPA 418.1 Quarterly <br /> Petroleum Hydrocarbons <br /> Oil and Grease mg/l 5520B3 5520B/664 Quarterly <br /> Total Lead` mg/1 3020 7421 Quarterly <br /> 1. A chromatographic standard shall be developed for each constituent. <br /> 2. Purge and trap method used for sample preparation. DRAFT <br /> 3. Extraction method used for sample preparation. <br /> 4. From wells which have not been monitored for total lead. If total lead is detected, the Discharger shall <br /> perform verification sampling within 30 days of submittal of the monitoring report. If the presence of total <br /> lead is not confirmed, no further test is required. I:pollution is verified, the Discharger shall continue <br /> monitoring for total lead quarterly. <br />