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• 08 October 1997 <br /> AGE-NC Project No 95-0128 <br /> Page 4 of 8 <br /> 34 SOIL VAPOR EXTRACTION/IN-SITU AIR SPARGING TEST <br /> To determine the feasibility of remedial options at the site, AGE will perform an SVE/IAS pilot test <br /> The SVE pilot test will be conducted for an eight-hour period at the site, the duration of the IAS pilot <br /> test will be approximately 96-hours (4 days) <br /> For the SVE test, an internal-combustion unit will be used to apply a vacuum to one extraction well <br /> The induced vacuum will be measured at selected SVE wells and/or monitoring wells on the site Soil <br /> gas vapor concentrations from the extraction well will be measured throughout the pilot test Four <br /> soil vapor samples will also be collected during the pilot test and submitted to a laboratory for <br /> analysis <br /> The IAS pilot test will be conducted by infecting air into two wells using a compressor-driven unit <br /> X1�c Several parameters, including radius of influence, sparging rate, sparging vapor concentrations, <br /> k�1' ground water depths and dissolved oxygen, will be measured at each sparging point and at selected <br /> monitoring wells Results of the SVE/IAS pilot test will be included in a Revised Corrective Action <br /> Plan (CAP) <br /> 4 0. PROCEDURES <br /> 41 INSTALLATION OF GROUND WATER MONITORING WELLS <br /> The following procedures will be performed for installation of the monitoring wells <br /> 1 Advance soil borings using a truck-mounted dell ng Two borings will be advanced to depths <br /> of 45 feet bsg using 8 25-inch hollow stem augers and two soil boring will be advanced to a <br /> depth of 60 feet bsg using 10-inch diameter hollow-stem augers for dual-completion Refer <br /> to Figure 2 for proposed soil borings locations and type of completion <br /> 2 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 /> SallipIG son' viii each boring, beguuung dt rive feet bsg, utilizing a California split-spoon <br /> sampler and pre-cleaned 2-inch by 6-inch brass sleeves <br /> 4 Preserve soil in the brass sleeve by covering both ends with aluminum foil or Teflon-tape, <br /> capping, and sealing with tape <br /> 5 Store the samples under ice and transport the samples in a chilled ice chest to a state-certified <br /> laboratory for analysis <br /> 6 Screen soil sample duplicates for the presence of volatile organic compounds using an organic <br /> Advanced Geormilromnental,Inc <br />