WORK PLANS - Laserfiche WebLink

Home Browse Search

26 July 2002 AGE-NC Project No. 97-0326 Page 5 of 10 3.2. WELL INSTALLATION Based on soil and ground water data collected during the investigation of petroleum-hydrocarbon impact, the proposed single-level ground water wells will be screened through Hydrologic Unit 1 groundwater. The proposed multi-level groundwater monitoring wells will be screened to delineate the vertical and lateral extent of petroleum-impacted ground water. AGE proposes installation of the wells in the following areas: • One single-level ground water monitoring well (MW-4) located approximately 60 feet northwest of MW-1 and screened between 28 and 48 feet bsg; • One single-level ground water monitoring well (MW-5) located approximately 80 feet northeast of MW-2 and screened between 28 and 48 feet bsg; • One single-level ground water monitoring well (MW-6) located approximately 40 feet southeast of MWA and screened between 28 and 48 feet bsg; • One single-level ground water monitoring well (MW-7) located approximately 40 feet southeast of MW-3 and screened between 28 and 48 feet bsg; • One multi-level ground water monitoring well (MW-8) located immediately adjacent to MW-1 and screen intervals at depths between 28 and 48 feet bsg(HUI), 80 and 85 feet bsg (HU2), 109 and 119 feet bsg (HU4) and 140 and 150 feet bsg; • One multi-level ground water monitoring well(MW-9)located approximately 105 feet west of MW-1 and screen intervals at depths between 28 and 48 feet bsg (HUI), 80 and 85 feet bsg (HU2), 109 and 119 feet bsg (HU4) and 140 and 150 feet bsg; • One multi-level ground water monitoring well (MW-10) located approximately 125 feet south of MW-1 and screen intervals at depths between 28 and 48 feet bsg(HUI), 80 and 85 feet bsg (HU2), 109 and 119 feet bsg (HU4) and 140 and 150 feet bsg; and • One multi-level ground water monitoring well (MW-11) located immediately adjacent to MW-3 and screen intervals at depths between 80 and 85 feet bsg (HU2), 109 and 119 feet bsg (HU4) and 140 and 150 feet bsg. Proposed well locations are depicted in Figure 2; hydrologic units and the estimated extent of petroleum-impact to soil beneath the site are depicted in cross sectional views A-A ' and B-B' (Figures 3 and 4). Following installation, each well will be developed to maximize water flow into the well and minimize the amount of fine-grained sediment drawn into the well during pumping or bailing. Procedures for well installation and development are presented in Sections 4.2 and 4.3,respectively. Advanced GeoEnvironmental.Inc.