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08 October 1997 <br /> AGE-NC Project No 95-0128 <br /> Page 6 of 8 <br /> 5 Sample soil from each boring, beginning at five feet bsg, utilizing a California split-spoon <br /> sampler and pre-cleaned 2-inch by 6-inch brass sleeves <br /> 6 Preserve soil in the brass sleeve by covering both ends with aluminum foil or Teflon-tape, <br /> capping, and sealing with tape <br /> 7 Store the samples under ice and transport the samples in a chilled ice chest to a state-certified <br /> laboratory for analysis <br /> 8 Screen soil sample duplicates for the presence of volatile organic compounds using an organic <br /> vapor meter equipped with photo-ionization detector (PID) pre-calibrated to isobutylene <br /> 9 Log borings in accordance with the Unified Soil Classification System <br /> 10 Selected soil samples will be analyzed for TPH-g, TPH-d, BTE&X and MTBE, TBA, DIPS, <br /> ETBE, TAME in accordance with the appropriate EPA methods <br /> 11 Transport and release selected soil samples to a state-certified laboratory for analysis for <br /> intrinsic permeability, moisture content, porosity and total organic carbon in accordance with <br /> the appropriate EPA/ASTM methods <br />. 12 Convert each 8 25-inch soil boring into an in-situ air sparging well as depicted in Figure 5 <br /> 13 Use a surge block or bailer during the construction of in-situ air sparging wells to set the sand <br /> filter material, prior to installation of the bentonite sanitary seal <br /> 14 Store cuttings in properly labeled D 0 T -approved, model 17H 55-gallon drums on-site <br /> pending laboratory analysis and disposal <br /> 15 Containerize nnseate generated during drilling activities in properly labeled D 0 T -approved, <br /> model 17H 55-gallon drums, and store on-site in an area lacking access for the general public <br /> 43 INSTALLATION OF VAPOR EXTRACTION WELLS <br /> The following procedures will be performed for installation of the soil vapor extraction wells <br /> .4r 4 <br /> i advance seven soil borings using a truck-mounted drill rig and using 8 25-inch hollow stem <br /> augers to depths of 35 feet bsg Refer to Figure 2 for proposed soil borings locations <br /> L 2 Decontaminate all sampling equipment in an Alconox solution and rinse twice with water <br /> pnor to each sampling run Steam-clean auger flights before advancement of each boring <br /> 3 Sample soil from each boring, beginning at five feet bsg, utilizing a California split-spoon <br /> sampler and pre-cleaned 2-inch by 6-inch brass sleeves <br /> Adva»ced GeoEmirotunentai,Inc. <br /> C 7 C <br />