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Table 3 <br /> Historical Groundwater Elevation Data <br /> Time Oil Company-Property 04-049 <br /> 14000 East Highway 88 <br /> Lockeford, California <br /> WELL DATE TOP OF CASING PRODUCT DEPTH TO GROUNDWATER ELEVATION <br /> ID SAMPLED ELEVATION' THICKNESS WATER ELEVATION CHANGE CGWE` <br /> (FEET) (FEET) (FEET) (FEET) (FEET} (FEET) <br /> MW-1 01/19/95 10021 NP 7596 2425 <br /> 05/24/95 NP 7540 2481 056 <br /> 10/04/95 NP 7391 2630 149 <br /> 12/19/95 NP 7342 2679 049 <br /> 02/28/96 NP 7327 2694 015 <br /> 05/23/96 NP 7250 2771 077 <br /> 1 07/19/96 NP 7217 2804 033 <br /> 12/19/96 NP 7208 2813 009 <br /> 02/26/97 NP 71 20 2901 088 <br /> 04/16/97 NP 7017 3004 103 <br />' 07/14/97 NP 6886 3135 131 <br /> 10/13/97 NP 6968 3053 -082 <br /> 01/27/98 NP 7103 2918 -135 <br /> 04/27/98 NP 6959 3062 144 <br />' 08/13/98 NP 6745 3276 214 <br /> 10/26/98 NP 6690 3331 055 <br /> 01/27/99 NP 6747 3274 -057 <br />' 04/26/99 NP 6760 3261 -0 13 <br /> 07/14/99 NP 6791 3230 -031 <br /> 11/24/99 NP 6876 3145 -085 <br /> 02/17/00 479 7341 2680 -465 3063 <br /> I06/01/00 3 64 71 70 2851 171 3142 <br /> le 08/18/00 001 6878 3143 292 31 44 <br /> 11/03/00 075 6985 3036 -107 3096 <br /> 01/11/01 NP 7012 3009 -027 <br />' 04/27/01 290 7231 2790 -219 3022 <br /> 08/20/01 052 71 40 2881 091 2923 <br /> 11/28/01 028 7263 2758 -123 2780 <br /> 03/04/02 NP 7238 2783 025 <br /> 05/16/02 102 31 ' NP 7215 3016 233 <br /> 07/25/02 001 7340 2891 -125 2892 <br /> 11/12/02 NP 7398 2833 -058 <br /> 01/16/03 NP 7339 -7339 -10172 <br /> 05/15/03 NP 7390 -7390 -051 <br /> 07/24/03 NP 7395 -7395 -005 <br /> 10/20/03 001 7452 -7452 -057 -7451 <br />' 01/05/04 002 7335 -7335 117 -7333 <br /> 04/01/04 <0 01 7353 -7353 -018 <br /> 07/23/04 NP 7374 -7374 -021 <br />' - 10/04/04 NP 7449 . -7449 -075 <br /> Notes <br /> NP - Not Present <br /> CGWE = Corrected Ground Water Elevation <br />' PT = Product Thickness <br /> ' Initial survey conducted on 1119195 for monitor wells MW-1 through MW-4 with an arbitrary datum of 100 feet <br /> assumed at the southeast corner of the underground storage tank concrete pad Monitor wells MW-5 through <br /> MW-10 were surveyed on 07/19/96 using the same arbitrary datum <br /> ` Groundwater elevations corrected where PT was observed, using the equation Oge+ (PT x SgP) <br /> Cge =Oge+(PT x SgP)where <br /> Cge =Corrected groundwater elevation <br /> Oge =Observed groundwater elevation <br /> SgP = Estimated specific gravity of free phase gasoline=assumed specific gravity <br /> Monitor wells were resurveyed by Morrow Surveying on May 14, 2002 <br /> Well considered dry <br />' Page 1 of 10 <br /> I\Time Od\Lockeford\Tables\SCM&Asmt This As <br />