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12 August 2002 AGE-NC Project No 99-0645 Page 7 of 8 washed prior to starting each boring. Rinseate will be containerized in DOT-approved 55-gallon drums and stored at the site pending laboratory analysis. 4.5. SOIL VAPOR EXTRACTION PILOT TEST Following the vapor well installation, two 8--hour SVE pilot studies are proposed for evaluation of SVE as a remedial alternative; one 8-hour test of the upper sand layer and a second 8-hour test o f the fine-grained deeper impacted area closest to ground water at the site. The results of the SVE pilot tests should provide data to calculate if sufficient mass of hydrocarbons and MTBE can be extracted and to evaluate SVE as a remedial option. The tests will be conducted using a vapor extraction system (VES), VACLEEN 1OOOG, manufactured by Environmental Techniques. The VES consists of a positive-displacement blower. driven by an internal combustion(.IC)engine. The inlet of the VES will be connected to one VES well for each test: the remaining VES wells will be observation wells. A Magnehelic vacuum gauge will be attached to the one SVE well to measure the induced vacuum, and a standard cubic feet flow rotometer will be installed in-line between the SVE well and the SVE extraction system. The vacuum applied to the well is anticipated to cause MTBE and/or-hydrocarbon vapor in the soilp pore spaces to volatilize and flow through the vacuum pump to the IC engine. The air stream from the extraction well (influent stream) will be monitored for the presence of organic vapor using an organic vapor analyzer (OVA) equipped with a photo-ionization detector (PID: Thermo Environmental 5808; 10.0 eV: calibrated to isobutylene). In addition, four soil vapor samples will be collected in Tedlar bags from the inlet to the IC for analysis. Each air sample will be labeled with sampling time, date and sampler's initials, then immediately placed in a chilled container for transportation to a state-certified laboratory. The samples will be analyzed by a Dl1S-certified laboratory for the following constituents: • TPH-g in accordance with EPA Method 8015; • BTL•X and MTBE in accordance with EPA Method 8020 and • Fuel oxygenates including MTBE, TBA, RIPE, ETBE and TAME in accordance with EPA Method 8260 Modified. The extracted hydrocarbon vapor will be destroyed in the IC engine as part of its internal combustion process. Emissions from the engine(effluent stream) will be routed through two catalytic converters to maximize the destruction of hydrocarbon vapor. Advanced GeoEnvironmental.Inc.