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19 July 2000 <br /> AGE-NC Project No 96-0232 <br /> Page 9 of 29 <br /> Multi-level monitoring well MW-9 was designed utilizing three separate screen intervals, 40-60 feet <br /> bsg (Second Zone), 95-105 feet bsg (Secondary Aquifer Zone), and 130-150 feet bsg (Primary <br /> Aquifer Zone) <br /> On 05 May 2000, monitoring well MW-12 was installed approximately 100 feet southeast of <br /> Rocky's Restaurant, approximately 20 feet off of Thornton Road, to characterize lithology, ground <br /> water gradient, potential contaminant migration pathways and to assess the vertical extent of <br /> MTBE-impacted ground water southwest of the former UST system The location of multi-level well <br /> MW-12 is illustrated in Figure 2 A generalized design of multi-level monitoring well MW-12 is <br /> presented in Figure 21 <br /> Based on laboratory results of soil and ground water samples and field data collected from on- and <br /> off-site, multi-level monitoring well MW-12 was designed utilizing four separate screen intervals, <br /> 10-20 feet bsg (First Zone), 40-50 feet bsg (Second Zone), 95-105 feet bsg (Secondary Aquifer <br /> Zone), and 130-150 feet bsg (Primary Aquifer Zone) <br /> On 08 May 2000, monitoring well MW-10 was installed approximately 50 feet south of the <br /> intersection of Capitol Road and Star Street on the southwest side of the street, to characterize <br /> lithology, ground water gradient, potential contaminant migration pathways and to assess the <br /> horizontal extent ofMTBE-impacted ground water southeast of the former UST system The location <br /> of multi-level well MW-10 is illustrated in Figure 2 A generalized design of multi-level monitoring <br /> well MW-10 is presented in Figure 19 <br /> Based on laboratory results of soil and ground water samples and field data collected from on- and <br /> off-site, multi-level monitoring well MW-10 was designed utilizing five separate screen intervals, <br /> 15-20 feet bsg (First Zone), 40-50 feet bsg (Second Zone), 70-75 feet bsg (Rocky's Upper Zone), <br /> 95-105 feet bsg (Secondary Aquifer Zone), and 130-150 feet bsg (Primary Aquifer Zone) <br /> On 09 May 2000,monitoring well MW-13 was installed approximately 90 feet west of the Three B's <br /> Truck Plaza domestic drinking water well (DW-1),to characterize lithology, ground water gradient, <br /> potential contaminant migration pathways and to assess the horizontal extent of MTBE-impacted <br /> ground water west of the former UST system The location of multi-level well MW-13 is illustrated <br /> in Figure 2 A generalized design of multi-level monitoring well MW-13 is presented in Figure 22 <br /> Based on laboratory results of soil and ground water samples and field data collected from on- and <br /> off-site, multi-level monitoring well MW-13 was designed utilizing four separate screen intervals, <br /> 10-20 feet bsg (First Zone), 50-60 feet bsg (Second Zone), 90-100 feet bsg (Secondary Aquifer <br /> Zone), and 130-150 feet bsg (Primary Aquifer Zone) <br /> . On 10 May 2000, monitoring well MW-11 was installed approximately 10 feet southeast of the <br /> Adianced GcoEmiron mental,Inc <br />