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11 June 2001 <br /> AGE-NC Project No. 96-0232 <br /> ' Page 5 of 11 <br /> ' 2.6. SITE STATUS SUMMARY <br /> Based on analysis of CPT grab ground water samples,petroleum-impacted ground water beneath the <br /> site appears to extend more than 105 feet bsg. Therefore, AGE proposes to install two multi-level <br /> ground water monitoring wells utilizing hollow stem auger techniques to: <br /> ' • Delineate the vertical extent of dissolved petroleum, <br /> • Characterize the geological and hydro-geological framework, <br /> t • Assess potential migration pathways, and <br /> • Protect the beneficial use of the local ground water supply. <br /> 3.0. SCOPE OF WORK <br /> Based on the results of previous subsurface investigation at the site, ground water at a depth of 105 <br /> ' feet below surface grade(bsg) or greater may have been impacted by petroleum hydrocarbons. The <br /> vertical extent of petroleum hydrocarbon-impact must be assessed prior to implementing a <br /> remediation plan. Therefore, AGE proposes to advance two multi-level ground water monitoring <br /> ' wells to depths of 150 feet bsg to characterize and delineate the vertical extent of petroleum <br /> hydrocarbon-impacted ground water. The ground water multi-level monitoring well installation <br /> project will require completion of the following tasks: <br /> ' • Permitting and pre-field work activities; <br /> ' • Soil bore-hole drilling and soil sample collection; <br /> • Multi-level monitoring well installation and development; <br /> ' • Ground water sample collection; <br /> • Preparation of a report of findings. <br /> 3.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES <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, each proposed monitoring well location will be <br /> ' Advanced GeoEnvironmental,Inc. <br /> t <br />