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' 24 September 1999 <br /> AGE-NC Project No. 96-0232 <br /> Page 6 of 12 <br /> ' using a Geoprobe 5400 soil probing unit. Probe boring advancement and sample collection are <br /> described in Section 4.3. below. <br /> ' 3.2.1. Laboratory Analysis <br /> ' Selected soil-gas organic vapor samples will be analyzed by a DHS-certified laboratory for the <br /> following constituents: <br /> ' • TPH-g in accordance with EPA Method 8015 Modified/5030; and <br /> • BTEX and MTBE in accordance with EPA Method 8020. <br /> 1 <br /> Selected soil samples will be submitted to a microbiological laboratory for microbial enumeration <br /> ' and physicochemical analysis to determine feasibility of bioremediation at the site. Results of the <br /> bioremediation analysis will provide an evaluation of naturally occurring micro-organisms and <br /> physicochemical conditions at the site in respect to support microbial growth and bioremedial <br /> ' activity. <br /> Laboratory reports for soil analyses, testing methods, laboratory quality assurance/quality control <br /> (QA/QC) reports, and sample chain of custody documentation will be presented in a report with <br /> findings and recommendations. <br /> ' 3.3. WELL INSTALLATION <br /> ' At least two ground water monitoring wells will be installed at the site to further assess petroleum <br /> hydrocarbon impact to shallow ground water. Proposed monitoring well locations are illustrated on <br /> ' Figure 2. The proposed well locations were selected to provide definition of the lateral extent of <br /> dissolved hydrocarbons. Monitoring of the wells should provide data to determine if the dissolved <br /> plume is migrating or stable. <br /> ' Based on ground water data collected during the ongoing investigation of petroleum-hydrocarbon <br /> ' impact, AGE proposes installation of ground water monitoring wells in the following areas: <br /> • approximately 50 feet west of well MW-7 to assess down-gradient dissolved-impact; <br /> ' • approximately 50 feet south of well MW-7 to assess down-gradient dissolved-impact. <br /> Advanced GeoEnvironmental,Inc. <br /> 1 <br />