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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. 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 PPB PPM MW-7 11.53 -23.47 04/12/09 49.69 0 -38.16 MW-7 11.53 05/04/a9 0 <500 <0.5 <0.5 <0.5 <0.5 MW-7 11.53 -23.47 05/22/09 50.54 0 -39.01 MW-7 11.53 -23.47 08/24/09 53.07 0 -41.54 60 1.8 <0.5 MW-7 11.53 -23.47 10/10/89 53.02 0 -41.49 MW-7 11.53 -23.47 11/02/89 54.12 0 -42.59 MW-7 11.53 -23.47 11/30/89 53.91 0 -42.38 MW-7 11.53 -23.47 01/12/90 52.72 0 -41.19 <500 <0.3 <0.3 <0.3 <0.3 MW-7 11.53 -23.47 02/19/90 52.44 0 -40.91 MW-7 11.53 -23.47 02/26/90 52.81 0 -41.28 MW-7 11.53 -23.47 05/25/90 52.56 0 -41.03 <50 0.8 0.4 <0.3 <0.9 MW-7 11.53 -23.47 11/27/90 54.12 0 -42.59 <50 8.5 <0.3 <0.3 <0.9 MW-7 11.53 -23.47 03/29/91 54.25 0 -42.72 <50 9.6 <0.3 <0,3 <0.9 MW-7 11.53 -23.47 04/08/91 NM 0 MW-7 11.53 -23.47 06/27/91 54.6 0 -43.07 <50 4.9 1 <0.3 <0.9 MW-7 11.53 -23.47 09/18/91 54.95 0 -43.42 <50 16 <0.3 <0.3 <0.9 MW-7 11.53 -23.47 12/18/91 53.9 0 -42.37 220 15 <0.3 <0.3 <0.9 R MW-7 11.53 -23.47 01/21/92 53.4 0 -41.87 �+ MW-7 11.53 -23.47 02/04/92 54.14 0 -42.61 MW-7 11.53 -23.47 03/10/92 52.64 0 -41.31 <50 <0.3 <0.3 <0.3 <0.9 MW-7 11.53 -23.47 04/29/92 53.34 0 -41.81 MW-7 11.53 -23.47 06/18/92 54.08 0 -42.55 <50 <0.3 <0.3 <0.3 <0.9 NEW-7 11.53 -23.47 07/16/92 54.38 0 -42.85 MW-7 11.53 -23.47 08/14/92 54.98 0 -43.45 MW-7 11.53 -23.47 09/22/92 55.34 0 -43.81 <50 <0.3 <0.3 <0.3 <0.9 MW-7 11.53 -23.47 09/25/92 55.34 0 0 -43.81 MW-7 11.53 -23.47 10/08/92 55.4 0 0.003 -43.87 MW-7 11.53 -23.47 11/11/92 55.04 ❑ trace -43.51 MW-7 11.53 -23.47 12/09/92 54.6 0 trace -43.07 <50 <0.3 <0.3 <0.3 <0.9 MW-7 11.53 -23.47 01/15/93 54.02 0 0 -42.49 MW-7 11.53 -23.47 02/08/93 54.08 0 TRACE -42.55 MW-7 11.53 -23.47 03/11/93 52.94 0 0.008 -41.41 <50 <0.3 <0.3 <0.3 <0.9 MW-7 11.53 -23.47 04/15/93 52.1 0 0.008 -40.57 MW-7 11.53 -23.47 05/18/93 52.04 0 0.004 -40.51 MW-7 11.53 -23.47 06/14/93 51.28 0 0.002 -39.75 <50 <0.3 <0.3 <0.3 <0.9 MW-7 11.53 -23.47 07/19/93 50.98 0 TRACE -39.45 MW-7 11.53 -23.47 08/20/93 52.04 0 TRACE -40.51 MW-7 11.53 -23.47 08/23/93 51.66 0 0.003 -40.13 MW-7 11.53 -23.47 09/15/93 52.26 0 0.004 1 -40.73 MW-7 11.53 -23.47 99/29/93 51.86 0 0.000 -40.33 MW-7 11.53 -23.47 09/29/93 51.66 0 0.008 -40.33 <50 <0.3 c0.3 <0.3 <0.9