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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 B/805M, and for MTBE, DIPS, ETRE, <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, thetemporary wells will be <br /> removed and the boreholes will be sealed with neat cement grout, using a tremie 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 separatearate 55- <br /> gallon drums for temporary on-site storage, pending waste pi�ofilingjand proper disposition. The <br /> disposition of the waste will be based on the analytical results of soil and groundwater samples <br /> analyzed during the investigation. <br /> 3.3 Environmental Site Investigation g Report <br /> p <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 EH�D 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 /> �1 <br /> i <br /> ' [1 <br /> { <br /> a <br /> k <br /> '1 <br />