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TABLE 2 <br /> GROUNDWATER LEVEL DATA <br /> Former ARCO Station No 6100 <br /> 25775 Patterson Pass Road <br /> Tracy,California <br /> Top of Casing Depth to Total Depth Water Floating Product Groundwater <br /> Well Date Elevation t Groundwater of Well' Column Thickness Elevation <br /> ID Measured (feet msl) (feet b s) feet h s) (feet) (feet) (feet msl) <br /> VW-4 10/03/00 290 12 5545 6000 23467 <br /> 12/27/00 5543 23469 <br /> 12/29/00 5632 233 80 <br /> 01/03/01 55 51 23461 <br /> 01/08/01 5541 23471 <br /> 01/23/01 5544 23468 <br /> 02/07/01 5530 234 82 <br /> 05/14/01 5441 23571 <br /> 08/20/01 55 87 001 23425 <br /> 08/28/01 55 94 002 234 18 <br /> 09/05/01 5602 001 234 10 <br /> 09/17/01 56 15 233 97 <br /> 10/12/01 5640 23372 <br /> 11/06/01 5658 001 233 54 <br /> 11/12/01 5663 001 23349 <br /> 11/20/01 5672 23340 <br /> 11/06/01 5658 001 233 54 <br /> 12/17/01 5628 233 84 <br /> 03/25/02 56 15 6000 3 85 sheen 23397 <br /> 06/20/02 57 15 6000 285 sheen 23297 <br /> 09/16/02 5775 6000 225 23237 <br /> 12/22/02 5833 6000 167 sheen 231 79 <br /> 03/24/03 5841 6000 1 59 004 231 73 <br /> 06/16/03 6003 6003 000 Dry <br /> 09/18/03 6010 6010 000 010 <br /> 12/22/03 6000 6000 000 Oil <br /> 03/15/04 57 50 6000 250 sheen 23262 <br /> 06/21/04 5472 6000 528 23540 <br /> 09/06/04 57 15 6000 285 008 23303 ** <br /> 12/20/04 5468 6000 5 32 sheen 23544 <br /> 03/14/05 5340 6000 660 sheen 23672 <br /> 06/21/05 5050 6000 950 23962 <br /> 09/19/05 4850 6000 11 50 sheen 241 62 <br /> Arco-6100 Quarterly_Data Page 14 of 27 6-MA'W3 <br />