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Each of the groundwater samples will be collected using dedicated and disposable polyethylene <br /> bailers and laboratory-supplied containers The sample containers will be labeled, packaged in an <br /> iced cooler, and transported with chain-of-custody documentation to a state of California-certified <br /> hazardous waste testing laboratory for analysis The laboratory will analyze the groundwater <br /> samples for TPH-as-gasoline and BTEX by EPA Method 8021 B1805M, and for MTBE, DIPE, ETBE, <br /> TAME, TBA and 1,2-DCA by EPA Method 8260B <br /> 3 2 3 Borehole Abandonment and Site Restoration <br /> Upon completion of the groundwater sampling at each location, the temporary wells will be <br /> removed and the boreholes will be sealed with neat cement grout, using a tremae pipe The surface <br />. , will be restored with asphalt or concrete patches <br /> 3 2 4 Waste Storage and Disposal <br /> ' All waste soil, equipment rinse water, and purged groundwater will be contained in separate 55- <br /> gallon drums for temporary on-site storage, pending waste profiling and proper disposition The <br /> i disposition of the waste will be based on the analytical results of soil and groundwater samples <br /> analyzed during the investigation <br /> �i' 3.3 Environmental Site Investigation Report <br /> A project report documenting all of the proposed work activities will be prepared and stamped by a <br /> state of California Registered Geologist and submitted to EHD and the Central Valley Regional <br /> Water Quality Control Board (RWQCB) The report will be prepared according to Appendix A of the <br /> Tri-Regional Board Staff Recommendations for Preliminary Investigation and Evaluation of <br /> Underground Storage Tank Sites <br /> 11 <br />