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r <br /> c7 <br /> • <br /> 19 January 1996 <br /> AGE-NC Project No 95-0144 <br /> Page 4 of 4 <br /> 4 2 IN-SITU AIR SPARGING PILOT TEST w <br /> For performance of an IAS pilot test, the following procedures will be followed <br /> 1 A compressor-driven unit will be used to inject air into the subsurface via the IAS wells <br /> 2 Parameters to be measured throughout the IAS pilot test include induced pressure at <br /> monitoring points, sparging rate(discharge rate), vapor concentrations at monitoring points, <br /> depth to ground water in surrounding wells and dissolved oxygen <br /> 3 Ground water samples will be collected from selected wells prior to initiation of the pilot <br /> study (baseline) and at the completion of the pilot study Ground water samples will be <br /> collected in 40-m1 VOA vials using a disposable plastic bailer <br /> 4 Ground water samples will be transported under chain-of-custody to a State-certified <br /> laboratory Each sample will be analyzed for TPH-g, BTE&X and iron concentrations in <br /> accordance with the appropriate EPA method <br /> 5 Collect ground water samples after completion of the IAS pilot test Ground water samples <br /> will be collected using disposable plastic bailers after well parameters have stabilized <br /> 44 REPORT PREPARATION <br /> A Corrective Action Plan will be prepared for the site The CAP will provide an analysis of feasibility <br /> testing and include recommendations for soil and ground water remediation at the site The report <br /> will be in a format acceptable to the PHS/EHD and will be reviewed and signed by a Registered <br /> Geologist <br />