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23 July 2002 <br /> AGE-NC Project No 97-0249 <br /> Page 5 of 8 <br /> 3 2 WELL INSTALLATION <br /> Based on soil and ground water data collected during the investigation of petroleum-hydrocarbon <br /> Impact, the proposed multi-level ground water monitoring wells will be screened to delineate the <br /> vertical and later extent of petroleum-Impacted ground water <br /> AGE proposes Installation of the wells in the following areas <br /> • One 2-inch diameter multi-level ground water monitoring well (MW-7) located <br /> approximately 5 to 10 feet northeast of MW-3 and screen intervals at depths between 40 and <br /> 45 feet bsg(HUI), 70 and 75 feet bsg (HU2), 95 and 100 feet bsg (HU3), 120 and 125 feet <br /> bsg (HU4) and between 145 and 150 feet bsg (HUS), <br /> • One 2-inch diameter multi-level ground water monitoring well (MW-8) located <br /> approximately 100 to 120 feet southwest of MW-3 and screen intervals at depths between <br /> 5 and 25 feet bsg(vadose), 40 and 45 feet bsg(HUI), 70 and 75 feet bsg(HU2), 95 and 100 <br /> feet bsg (HU3), 120 and 125 feet bsg (HU4) and between 145 and 150 feet bsg (HU5), -y <br /> • One 2-mch diameter multi-level ground water monitoring well (MW-9) located <br /> approximately 20 to 30 feet north of MW-6 and screen intervals at depths between 40 and <br /> 45 feet bsg(HUI), 70 and 75 feet bsg(HU2), 95 and 100 feet bsg (HU3), 120 and 125 feet <br /> bsg (HU4) and between 145 and 150 feet bsg (HU5), <br /> © One 2-inch diameter multi-level ground water monitoring well (MW-10) located <br /> approximately 90 to 110 feet east of MW-6 and screen Intervals at depths between 5 and 25 <br /> feet bsg (vadose), 40 and 45 feet bsg(HUI), 70 and 75 feet bsg(HU2), 95 and 100 feet bsg <br /> (HU3), 120 and 125 feet bsg (HU4) and between 145 and 150 feet bsg (HUS), <br /> • One 2-inch diameter multi-level ground water monitoring well (MW-11) located <br /> approximately 60 to 80 feet northwest of MW-3 and screen Intervals at depths between 5 and <br /> 25 feet bsg (vadose), 40 and 45 feet bsg (HUI), 70 and 75 feet bsg(HU2), 95 and 100 feet <br /> bsg (HU3), 120 and 125 feet bsg (HU4) and between 145 and 150 feet bsg (HU5) <br /> • One 2-Inch diameter multi-level ground water monitoring well (MW-12) located <br /> approximately 40 to 50 feet south of MW-1 and screen Intervals at depths between 5 and <br /> 25 feet bsg (vadose), 40 and 45 feet bsg (HUI), 70 and 75 feet bsg (HU2), 95 and 100 feet <br /> bsg (HU3), 120 and 125 feet bsg (HU4) and between 145 and 150 feet bsg (HUS) <br /> Proposed well locations are depicted in Figure 2, hydrologic units and the estimated extent of <br /> petroleum-impact to soil beneath the site are depicted in cross sectional views D-D, E-E'and F-F' <br /> (Figures 3, 4 and 5) Procedures for well Installation are presented in Section 4 2 <br /> Advanced GeoEnvironmental,Inc <br />