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' Job No. 4780200 Page 6 <br /> ' 3.0 METHODS AND PROCEDURES <br /> The proposed investigative approach and all variations deemed necessary will <br /> be consistent with guidelines set forth by the SJCPHS and will be in <br /> ' accordance with specific actions discussed in meetings with SJCPHS <br /> representatives concerning the subject site. <br /> 1 <br /> 3.1 Soil Boring Advancement Protocol <br /> 1 <br /> ' Borings will be drilled using an 8-inch diameter, hollow-stem, continuous flight <br /> auger. All augers, drill rods, subs and collars will be thoroughly steam-cleaned <br /> ' before drilling operations commence. Cleaned augers, rods, and other tools will <br /> be stored when not in use. Cleaning operations will be verified by a <br /> ' representative of EZC, Inc. All .equipment decontamination rinseate will be <br /> contained and stored on site in labelled 55-gallon drums, approved for such use <br /> by the State of California Department of Transportation. <br /> tins generated during drilling and sampling operations will be stored on- <br /> sitecut g g 9 9 <br /> site until the results of laboratory analyses confirm whether these materials <br /> ' must be handled and disposed of as hazardous waste. Soil cuttings will be <br /> stored upon and covered by a hydrocarbon resistant liner. <br /> 3.2 Soil Sampling and Analysis Protocol <br /> ' Soil samples will be obtained during drilling operations at 5-foot depth intervals <br /> ' within specified borings or at depths otherwise indicated in section 1 .3 of this <br /> Work Plan. Soil samples will be collected using a California modified split- <br /> spoon sampler equipped with 2-inch diameter brass sampling tubes. All soil <br /> sampling equipment will be cleaned with a non-phosphate detergent solution <br /> ' and rinsed with clean water between sampling intervals to prevent the potential <br /> transfer of contamination. <br /> ' EC, Inc. December_23, 1992 <br />