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TABLE 2 <br /> GROUNDWATER LEVET,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 MSI) (feet bgs) (feet bgs) (feet) (feet msl) <br /> VW-19 10/03/00 27633 Dry 88 00 Dry <br /> 12/27/00 Dry Dry <br /> 12/29/00 Dry Dry <br /> 02/07/01 Dry Dry <br /> 08/20/01 Dry Dry <br /> 03/25/02 Dry Dry <br /> 06/20/02 Dry Dry <br /> 09/16/02 8800 Dry <br /> 12/22/02 8800 Dry <br /> VW-20 10/03/00 27508 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 /> 06/20/02 7764 <br /> 09/16/02 7765 <br /> 12/22/02 7771 <br /> ms)=mean sea level <br /> bgs=below ground surface <br /> 'Top of casing elevations surveyed October 2001 by Morrow Surveying <br /> Well MW-1 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 3/25/02 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 mterpretted 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_Quarterly_0ata Page 10 of 10 STRATUS <br />