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TABLE I GROUNDWATER MONITORING AND CHEMICAL RESULTS: FORMER REGAL STATION 603, 6425 PACIFIC AVENEUE, STOCKTON, CALIFORNIA WELL # CASING TOP OF DATE DEPTH TO PROD. VACUUM CORRECTED TOTAL PET. BENZENE TOLUENE ETHYL XYLENES Methyl tert-Butyl DISSOLVED ELEVATION SLOT TOP OF THICK. AT WELL GW ELEV. HYDROCARB BENZENE Ether OXYGEN FEET AMSL FEET AMSL WATER HEAD FT. AMSL GAS-RANGE 8020 8260 IN FEET IN FEET IN FEET PPB PPB PPB PPB PPB PPB PPS PPM MW-9 10.32 -24.68 02/10/94 49.9 0 Tr -39.58 MW-9 10.32 -24.68 03/04/94 47.7 0 0.025 -37.41 8010 = all compounds below detection limits MW-9 10.32 -24.68 03/29/94 47.04 0 0.007 -36.73 <501 <0.5 <0.5 <0.5 c2 MW-9 10.32 -24.68 04/26/94 46.58 0 0.010 -36.27 MW-9 10.32 -24.68 05/19/94 46.88 0 0.013 -36.57 MW-9 10.32 -24.68 06/22/94 46.13 1 0 0.007 -35.82 1 <50 <0.5 <0.5 <0.5 <2 MW-9 10.32 -24.68 08/17/94 48.33 0 0.013 -3B.02 MW-9 10.32 -24.68 09/14/94 47.05 0 0.000 -36.73 80 <0.5 <0.5 <0.5 <2 MW-9 10.32 -24.68 10/26/94 47.25 0 0.000 -36.93 MW-9 10.32 -24.68 12/96/94 46.86 0 0.000 -36.54 <50 <0.5 <0.5 <0.5 <2 MW-9 10.32 -24.68 01/25/95 46.25 0 0.000 -35.93 MW-9 10.32 -24.68 03/15/95 45.36 0 0.010 -35.05 <50 <0.5 <0.5 <0.5 <2 MW-9 10.32 -24.68 04/12/95 45.87 0 0.003 -35.55 MW-9 10.32 -24.68 05/17/95 44.15 0 0.000 -33.83 MW-9 10.32 -24.68 06/21/95 43.84 0 0.000 -33.52 <50 <0.5 <0.5 <0.5 <2 MW-9 10.32 -24.68 08/01/95 44.02 0 0.000 -33.70 MW-9 10.32 -24.68 09/26/95 41.7 0 0.003 -31.38 MW-9 10.32 -24.68 10/17/95 43.93 0 0.001 -33.61 MW-9 30.32 -24.68 11/94/45 44.65 0 0.007 -34.34 MW-9 10.32 -24.68 12/12/95 44.17 0 0.001 -33.85 MW-9 10.32 -24.68 01/22/96 42.28 0 0.281 -32.24 MW-9 10.32 -24.68 03/06/96 41 0 0.000 -30.68 <50 <0.5 <0.5 <0.5 <2 MW-9 10.32 -24.68 04/09/96 39.8 0 0.000 -29.48 MW-9 10.32 -24.68 01/22/96 38.8 0 0.007 -28.49 MW-9 10.32 -24.68 06/20/96 38.69 0 0.000 -28.37 <50 <0.5 <0.5 <0.5 <2 <50 2.6 MW-9 10.32 -24.68 07/30/96 39.12 0 0.007 -28.81 MW-9 10.32 -24.68 09/19/96 39.9 0 0.000 -29.58 <50 <0.5 <0.5 <0.5 <2 <5 MW-9 10.32 -24.68 12/10/96 38.3 0 0.000 -27.98 MW-9 10.32 -24.68 03/18/97 36.14 0 0.007 -25.83 <50 <0.5 <0.5 <0.5 <2 <5 MW-9 10.32 -24.68 06/11/97 35.95 0 0.000 -25.63 MW-9 10.32 -24.68 09/23/97 nm nm nm MW-9 12/08/97 sparging and vapor extraction system operating 4.1 MW-9 10.32 -24.68 12/16/97 35.83 0 0.000 -25.51 f9„U ' 6�; 96 ?, 11� <5 <5 0 MW-9 10.32 -24.66 05/28/98 31.28 0 0.000 -20.96 <50 <0.5 <0.5 1 <0.5 <2 <5 of '`$esK=obtazried� 3313 12 97 9vei�`ernes'" o>zt'amidated,'�+i'th�siibmer,�s;k73'�piutip�ivhic}i�ho9✓ed�,'�?H9�'A�� 9/.L',�8,e,'rizene ` ""I; o `