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DEC.18.2000 5:33PM ARCADIS GERAGHTY&MILLER/JSA N0.698 P.4i17 <br /> i <br /> Mr.Jeffrey Wong <br /> 18 December 2-000 <br /> I _ r <br /> i <br /> I <br /> Additional samples located at lithologic changes may also be retained for analysis, <br /> Soil samples collected for laboratory analysis will be retained in the acrylic sleeves, <br /> sealed with nonadhesive tape and plastic end caps,placed on ice(not blue ice), and <br /> transported to a California-certified analytical laboratory under appropriate chain-of- ! <br /> custody documentation.Soil samples will be submitted for analysis as described <br /> below, r <br /> i <br /> Prior to the initial borehole advancement and between each borehole location,the <br /> drilling equipment will be warn cleaned.The soil core samplers will be cleaned <br /> between each sample with laboratory-grade detergent and potable water.The rinse <br /> waters and detergent will be contained in 55-gallon drums. Upon completion of the <br /> boreholes, all residual soil cuttings and sample liners will be contained in another 55•- <br /> gallon drum, The drums will be left onsite pending analytical results. ARCADIS <br /> Geraghty&Miller will assist in the appropriate disposal of the rinseate water,soil <br /> cuttings, and related materials. <br /> Upon completion of the field activities,the boreholes will be abandoned by <br /> backfilling them with a cement/bentonite mixture, <br /> Soil samples from the approximately 1-foot depth will be analyzed for a TPH scan <br /> (United States Environmental Protection Agency [USBPAJ Method 8015,modified), <br /> CAM 17 metals(USEPA Method 6010),and VOCs (USEPA Method 8260). Deeper <br /> soil samples will be analyzed for a TPH scan and VOCs, The deeper soil samples <br /> may also be analyzed for metals if elevated metals concentrations are detected in the <br /> shallow soil sample from a given borehole. <br /> If you have any questions regarding this work plant or require any further <br /> information,please do not hesitate to call Mark Becker at the number listed. Thank <br /> you for your assistance. <br /> Sincerely, <br /> i <br /> ARCADIrS Geraghty&Miller,Inc. <br /> i <br /> i <br /> i <br /> Mark Becker,REA <br /> Senior Project Manager <br /> Attachment <br /> i <br /> f <br /> I <br /> Page: <br /> 45ac4e090nereelanhcapefeo/phaaellworkplan-0oc 3I3 <br />