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Surveying will be preformed under the direct supervision of a <br /> California Registered Caval Engineer. Groundwater contours will be <br /> constructed using a kriging program. <br /> 5.3 Groundwater Sampling <br /> Immediately following well development, groundwater samples will be <br /> collected from each of the monitoring wells using a per-cleared <br /> bottom empltying bailer or a new disposable bailer. Stabilization <br /> of EC, pH, and temperature will be checked prior to sample <br /> collection to ensure samples collected are representative of <br /> formation water. Water sample collection and preservation will be <br /> in accordance with WaterWork's Quality Assurance and Quality <br /> Control Plan, groundwater sampling protocol (Appendix I) . <br /> 5.4 Laboratory Analyses <br /> All soil and groundwater samples will be submitted to a state- <br /> certified laboratory for analyses. Soil samples will be analyzed <br /> for TPH as gasoline, TPH as diesel, and BTPX using EPA methods <br /> • 8020, 355018015, and modified 8015. Water samples will be analyzed <br /> M for TPH as gasoline and diesel, and BTEX using EPA methods 602 and <br /> 3510/8015. If groundwater samples record nondetectable levels of <br /> petroleum constituents, a second round of monitoring and sampling <br /> will be conducted the following month. If nondetectable <br /> concentrations are reported in the second samples, well abandonment <br /> and site closure will be proposed. <br /> 6.0 WASTE MANAGEMENT <br /> If hydrocarbon-bearing drill cuttings are produced, they will be <br /> st -d on site on and covered by 6 mil. plastic sheeting. A sample <br /> of Lhe soil will be collected and analyzed for waste <br /> characterization. Proper disposal procedures will be dependant on <br /> laboratory analyses. If hydrocarbon-bearing soil is encountered, <br /> the drilling augers will be steam cleaned prior to drilling the net <br /> Chevron U S A inc - 357 5 <br /> R03275 TLP <br />