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16 December 1999 <br /> AGE-NC Project No. 95-0184 <br /> Page 3 of 6 <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br /> accordance with EPA Method 8015 Modified/5030; <br /> • Volatile aromatics (benzene, toluene, ethylbenzene and xylenes: BTEX) and methyl tert- <br /> butyl ether(MTBE) in accordance with EPA Method 8020. <br /> Selected soil samples may also be analyzed for: <br /> • Fuel oxygenates; di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), MTBE, <br /> tertiary-amyl methyl ether (TAME) and tertiary butanol (TBA) in accordance with EPA <br /> Method 8260. <br /> Sample selection and analyses will include input from the PHS-EHD. <br /> 3.3. 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 /> The IAS pilot test will be conducted by injecting air into a drown monitoring well, to be used as a <br /> sparging well, using a compressor-driven unit. Several parameters, including radius of influence, <br /> sparging rate, sparging vapor concentrations, ground water depths and dissolved oxygen, will be <br /> measured at surrounding wells. <br /> For the SVE test,an internal-combustion unit will be used to apply a vacuum to V WSA. The induced <br /> vacuum will be measured at VWSB and VW2A. Soil vapor concentrations from the extraction well <br /> will be measured at intervals throughout the pilot test. Four soil vapor samples will also be collected d <br /> during the pilot test, submitted to a DHS-certified laboratory and analyzed for TPH-g and BTEX in 0 y, <br /> accordance with EPA Methods 8015m and 8020. Results of the SVE/IAS pilot test will be used to �1 <br /> prepare a Corrective Action Plan(CAP). Procedures for performance of the SVE/IAS pilot test are <br /> included in Section 4.5. <br /> 3.4. GROUND WATER EXTRACTION TEST <br /> A limited ground water extraction(pump)test will be performed to determine the viability of ground <br /> water extraction at the site. The proposed test will be designed to obtain general aquifer <br /> characteristics such as hydraulic conductivity, transmissivity, drawdown and radius of influence at <br /> Advanced GmEnvironmental,Inc. <br />