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TABLE 2 <br /> GROUNDWATER LEVEL DATA <br /> ARCO Service Station No 6100 <br /> 25775 Patterson Pass Road <br /> Tracy,California <br /> Top of Casing Depth to Total Depth Floating Product Groundwater <br /> Well Date Elevation Groundwater of Well 3 Thickness Elevation <br /> ID Measured feet msl (feet b s) (feet b s) feet feet ms]) <br /> VW-16 10/3/00 NM 5800 5900 <br /> 12/27/00 5840 <br /> 12/29/00 5840 <br /> 2/7/01 5860 <br /> 8/20/01 58 10 <br /> 3/25102 58 13 <br /> VW-17 10/3/00 28926 Dry 10200 Dry <br /> 12/27/00 Dry Dry <br /> 12/29/00 Dry Dry <br /> 2/7/01 Dry Dry <br /> 8/20/01 Dry Dry <br /> 3/25/02 Dry Dry <br /> VW-i 8 10/3/00 27441 Dry 7300 Dry <br /> 12/27/00 Dry Dry <br /> 12/29/00 Dry Dry <br /> 217101 Dry Dry <br /> 8/20101 7295 <br /> • 3/25/02 7295 <br /> VW-19 10/3/00 27633 Dry 8800 Dry <br /> 12/27/00 Dry Dry <br /> 12/29/00 Dry Dry <br /> 2/7/01 Dry Dry <br /> 8120101 Dry Dry <br /> 3/25/02 Dry Dry <br /> VW-20 10/3100 27509 7779 7800 <br /> 12/27/00 7776 <br /> 12/29/00 7777 <br /> 02/07/01 Dry Dry <br /> 08/20/01 Dry Dry <br /> 03/25/02 7770 " <br /> msl=mean sea level <br /> gs=below ground surface <br /> i Top of casing elevations surveyed October 2001 by Morrow Surveying <br /> Well MW-I is monitored on a weekly basis,and free product is measured and removed, <br /> see'Table 1 for additional information/details <br /> As measured during sampling <br /> Casing cut 0 12 feet on 3/25102 due to a crack in the PVC Casing elevation not re-surveyed <br /> Field technician noted"dirt in casing" <br /> Water observed in well is less than 1 0 ft and does not appear to be groundwater from surrounding formation, <br /> well interpretted to be dry <br /> **Groundwater elevations corrected for the presence of floating product as follows <br /> (top of casing elevation-depth to water+(0 7 x product thickness)) <br /> Arco_6100_Quartedy_pata xis Page 7 of 7 <br />