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! i i TABLE 1 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 Cert-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 PP8 PPS PPB PPB PPB PPM MW-10 12.62 -12.3B 12/09/88 MW-10 12.62 -12.38 04/12/89 50.72 -38.10 MW-10 12.62 -12.36 05/04/89 MW-10 12.62 -12.38 05/22/89 50.16 -37.54 MW-10 12.62 -12.38 08/24/69 MW-10 12.62 -12.38 10/10/89 52.44 -39.82 MW-10 12.62 -12.38 11/02/89 MW-10 12.62 -12.38 12/01/89 NM NM MW-10 12.62 -12.38 01/15/90 53.84 0 -41.22 69000 68000 83000 4100 110000 MW-10 12.62 -12.38 02/19/90 53.72 0 -41.10 MW-10 12.62 -12.38 02/26/90 53.77 0 -41.15 MW-10 12.62 -12.38 Os/zs/ga 53.71 0 -41.09 77000 24000 33000 2700 21000 MW-10 12.62 -12.38 11/27/90 55.2 0 -42.58 290000 27000 40000 6700 45000 MW-10 12.62 -12.38 03/29/91 55.46 0 -42.84 FLOATING PRODUCT SHEEN MW-10 12.62 -12.38 06/27/91 55.7 0 -43.08 FLOATING PRODUCT SHEEN MW-10 12.62 -12.38 09/18/91 55.66 0 -43.04 FLOATING PRODUCT SHEEN MW-10 12.62 -12.38 12/17/91 56.18 0 -43.56 120000 17000 17000 1800 14000 MW-10 12.62 -12.38 02/21/92 54.06 0 0.37 -41.81 MW-10 12.62 -12.38 02/04/92 53.98 0 0.00 -41.36 FLOATING PRODUCT SHEEN MW-10 12.62 -12.38 03/10/92 52.54 0 0.62 -40.54 SHEEN OF FLOATING PRODUCT - CLEAR YELLOW. MW-10 12.62 -12.38 04/29/92 54.3 0 0.00 -41.68 WATER IS CLEAR MW-10 12.62 -12.38 05/18/92 dry 0 0.00 WELL DRY NO SAMPLE TAKEN MW-10 12.62 -12.38 07/16/92 55.4 0 0.32 -43.10 SHEEN OF FLOATING PRODUCT - CLEAR YELLOW. MW-10 12.62 -12.38 08/14/92 55.88 0 0.00 -43.26 SHEEN OF FLOATING PRODUCT - CLEAR YELLOW. MW-10 12.62 -12.38 09/22/92 55.81 0 NM -43.19 SHEEN OF FLOATING PRODUCT - CLEAR YELLOW. MW-10 12.62 -12.38 09/25/92 55.6 0 1.16 -44.14 SHEEN OF FLOATING PRODUCT - CLEAR YELLOW. MW-10 12.62 -12.38 la/aa/92 55.315 0 1.25 -43.99 SHEEN OF FLOATING PRODUCT - CLEAR YELLOW. MW-10 12.62 -12.38 11/11/92 55.44 0 1.47 -44.29 SHEEN OF FLOATING PRODUCT - CLEAR YELLOW. MW-10 12.62 -12.38 12/09/92 54.54 0 3.47 -45.39 not enough recharge water to sample-no sheen. MW-10 12.62 -12.38 01/15/93 DRY 0 0.00 MW-10 12.62 -12.38 02/08/93 53.92 0 2.00 -43.30 MW-10 12.62 -12.38 03/11/93 52.26 0 3.47 -43.11 NS: WELL DEPLETED, NO RECHARGE. MW-10 12.62 -12.38 03/15/93 NM 0 3.47 39000 760 2700 860 18000 MW-10 12.62 -12.38 04/15/93 51.36 0 3.28 -42.02 MW-10 12.62 -12.38 05/18/93 51.03 0 1.82 -40.23 MW-10 12.62 -12.38 08/14/93 50.4 0 3.56 -41.34 43000 190 570 270 8500 MW-10 12.62 -12.36 07/19/93 51.02 0 3.84 -42.24 MW-10 12.62 -12.38 x8/20/93 50.46 0 4.31 -42.15 MW-10 12.62 -12.38 08/23/93 50.3 0 4.78 -42.46 MW-10 12.62 -12.38 09/15/93 SO.B2 0 0.00 -38.20 MW-10 12.62 -12.38 09/29/93 1 52.78 10 0.00 -40.16