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4l <br /> 08 October 1997 <br /> AGE-NC Project No 95-0128 <br /> Page 5 of 8 <br /> vapor meter equipped with photo-ionization detector (PID) pre-calibrated to isobutylene <br /> 7 Log borings in accordance with the Unified Soil Classification System <br /> 8 Selected soils ples will be analyzed for TPH-g, TPH-d,�TE&X and MTBE, TBA, DIPE, <br /> ETBE, TAN n accordance with the appropriate EPA methods <br /> 9 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 /> 10 Convert each 8 25-inch soil boring into a ground water monitoring well as depicted in Figure <br /> 3, and each 10-inch soil boring into a dual-completed ground water monitoring well as <br /> depicted in Figure 4 <br /> 11 Use a surge block or bailer during the construction of ground water wells to set the sand filter <br /> material, prior to installation of the bentonite sanitary seal <br /> 12 Store cuttings in properly labeled D O T -approved, model 1.7H 55-gallon drums on-site <br /> pending laboratory analysis and disposal <br />. 13 Containenze rinseate generated during drilling activities in properly labeled D O T -approved, <br /> model 17H 55-gallon drums, and store on-site in an area lacking access for the general public <br /> 14 Develop new monitoring wells utilizing a submersible pump until water is essentially sediment <br /> free <br /> 15 Survey the top of each well casing to the nearest 11100th of a foot to determine the elevation <br /> relative to a single well <br /> 42 INSTALLATION OF IN-SITU AIR SPARGING POINTS <br /> The following procedures will be performed for the installation of airs ar in points <br /> gp P P g g <br />�( 1 Advance six soil borings to a total depth of approximately 60 feet bsg using atruck-mounted <br /> 7' rirlil rt[1 o`1ti,nna� •i ,+i� Q ,nniU "4JI Lter 1. . > +r.... . <br /> uiµilat.wa itV11V w J1.1.111 AUgerJ <br /> 2 All hollow stem augers will be steam cleaned prior to any boring advancement <br /> �X <br /> Complete each soil probe boring as an IAS injection point Refer to Figure 2 for proposed soil <br /> + borings locations <br /> Decontaminate all sampling equipment in an Alconox solution and rinse twice with water <br /> prior to each sampling run Steam-clean auger flights before advancement of each boring <br /> 1 <br /> Advanced GeoEmironmentA Inc <br />