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MONITORING AND REPORTING PItOGRANI NO. 5-01-577 ? - <br /> PACIFIC GAS AND ELECTI:IC COMPANY <br /> LA'1 TROP NATURAL GAS DEHYDRATOR STATION <br /> SAN JOAQUIN COUNTY <br /> Analyses and Sampling Frequency <br /> EPA Analytical Max. Detection Sampling <br /> Constituents Method Limit (µ(,/I)' Frequency <br /> Depth to Groundwater --- 0.01 foot Scmi-Annual" <br /> Benzene 8020 or 8260 0.5 Semi-Annual <br /> Toluene 5020 or 8260 0.5 Scmi-Annual` <br /> Ethylbenzene 8020 or 8260 0.5 Semi-Annual <br /> Xylene 8020 or 8260 2.0 Semi-Annual <br /> TPH-gasoline3 8015M 50 Semi-Annual <br /> TPH-diesel3 8015M 50 Semi-Annual <br /> TPH-motor 0113 8015M 500 Semi-Annual <br /> 1 For nondetectable results. <br /> - Semi-annual sampling shall be conducted in the first and third quarters. <br /> 3 Results reported in these ranges are for comparison purposes. This is a natural gas facility, so the resulting <br /> chromatograph will not match refined fuel standards. <br /> PRIVATE WELL MONITORING <br /> Unless refused access by the property owner(s), the Discharger shall sample the private wells that are <br /> within 500 feet of the downgradient or sidegradient edge of the contaminated area. These wells shall <br /> be sampled at the same frequency and for the same constituents as the monitoring wells, except depth <br /> to groundwater. The Discharger shall notify the Board as soon as it learns that a private well contains <br /> any detectable constituents of concern. Immediate confirmation samples must be collected and the <br /> Regional Board apprised of the results. <br /> REPORTING <br /> When reporting data, the Discharger shall arrange the information in tabular form so that the date, the <br /> constituents, and the concentrations are readily discernible. The data shall be summarized in such a <br /> manner as to illustrate clear compliance with this Order. <br /> As required by the California Business and Professions Code Sections 6735, 7835, and 7835.1, all <br /> reports shall be prepared by a registered professional or their subordinate and signed by the registered <br /> professional. <br /> Semi-annual reports shall be submitted to the Board by the 1st day of the second month following <br /> the end of the first and third calendar quarters (i.e., by 1 May and 1 November) until such time as <br />