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29 September 2000 <br /> AGE-NC Project No 97-0301 <br /> Page 2 of 7 <br /> 2.0. SCOPE OF WORK <br /> Based on the results of the previous investigations and UST removal sample results, ground water <br /> at the site has been impacted The lateral and vertical extent of impacted ground water must be <br /> ' determined prior to the initiation of remediation The assessment activities will consist of the <br /> following tasks <br /> ' • Permitting and pre-field work activities, <br /> ' - Drilling activities, <br /> • Monitoring well installation and development, <br /> ' • Ground water sample collection and analysis, <br /> • Report preparation <br /> 21 PERMITTING AND PRE-FIELD WORK ACTWITIES <br /> Applicable site assessment permits will be obtained from the PHS-EHD In addition, an update to <br /> the health and safety plan presently on-file will be prepared in accordance with Occupational Safety <br /> ' and Health Guidance Manual for Hazardous Waste Site Activities (National Institute for <br /> Occupational Safety and Health Administration, U S Coast Guard and U S Environmental <br /> Protection Agency, 1985) Prior to mobilization,the proposed ground water monitoring well location <br /> ' will be clearly marked and a utility clearance obtained through Underground Service Alert <br /> ' 22 DRILLING ACTIVITIES <br /> AGE proposes to install four ground water monitoring wells at the site as part of the site assessment <br /> ' Three ground water monitoring wells will be installed to assess the horizontal extent of petroleum- <br /> impacted ground water, one well will be installed to define the vertical extent Proposed well <br /> tlocations are illustrated in Figure 2 <br /> Based upon laboratory results of ground water samples from existing monitoring wells at the site, <br /> AGE proposes four ground water monitoring well locations in the following areas <br /> • Between 5 and 10 feet north of well MW-1 to assess the vertical extent of petroleum <br /> hydrocarbon-impacted ground water beneath the site <br /> * Between 65 and 75 feet west of MWA to assess petroleum hydrocarbon-impacted ground <br /> water downgradient of the former UST pit <br /> Advanced GeoEnvironmental,Inc <br /> 1 <br />