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TABLE 1 GROUNDWATER MONITORING AND CH�MICAL RESULTS FORMER REGAL STATION 603, 6425 PACIFIC AVENEUE STOCKTON, CALIFORNIA WELL ti CASING DATE DEPTH TO PROD VACUUM CORRECTED TOTAL PET BENZENE TOLUENE ETHYL XYLENES Methyl tert-Butyl DISSOLVED ELEVATION TOP OF THICK AT WELL GW ELEV HYDROCARB BENZENE Ether OXYGEN FEET AMSL WATER HEAD FT AMSL GAS-RANGE 8020 8260 IN FEET IN FEET IN FEET PPM PPB PPB PPB PPB PPB PPB PPM MW-8 9 71 12/09/60 9 71 04/12/09 50 28 0 -40 57 9 71 05/04/89 0 3 1300 63 46 377 9 71 05/22/09 51 08 0 -41 37 9 71 Oa/24/39 53 5 0 -43 79 27 4300 500 4300 650 9 71 10/10/89 53 2 0 -43 49 9 71 11/02/39 54 62 0 -44 91 9 71 11/30/69 54 46 0 -44 75 9 71 01/12/90 53 34 0 -43 63 1 3 12000 4000 200 2000 9 71 02/19/90 53 24 0 -43 53 9 71 02/26/90 53 31 0 -43 6 9 71 05/25/90 53 29 0 -43 58 3 3200 240 <30 250 9 71 11/27/90 54 42 0 -44 71 6 11000 2200 150 730 9 71 03/29/91 55 1 0 -45 39 6 7100 2400 190 830 9 71 04/00/91 NM 0 9 71 06/27/91 55 22 0 -45 51 5 5700 570 180 520 9 71 09/18/91 55 41 0 -45 7 2 6500 1100 160 760 9 71 12/17/91 54 62 0 -44 91 24 7500 4500 220 2100 a Y 9 71 01/21/92 53 94 0 -44 23 ^[ 9 71 02/04/92 53 74 0 -44 03 9 71 03/10/92 53 52 0 -43 81 7 6 3200 970 <15 370 9 71 04/29/92 53 76 0 -44 05 9 71 06/10/92 54 54 0 -44 83 15 3700 2500 250 530 9 71 07/16/92 54 9 0 -45 19 9 71 08/14/92 55 32 0 -45 61 9 71 09/22/92 55 88 0 -46 17 0 77 280 8 5 <3 34 9 71 09/2$/92 55 85 0 0 003 -46 14 CERT SVY 11 74 10/08/92 56 02 0 0 007 -44 28 11 74 11/11/92 55 6 0 0 000 -43 86 11 74 12/09/92 55 2 0 0 008 -43 46 11 3000 1600 <15 370 11 74 01/15/93 54 62 0 0 000 -42 88 11 74 02/08/97 54 5 0 0 100 -42 86 11 74 03/11/93 53 52 0 0 017 -41 80 2 3 420 140 18 230 11 74 04/15/93 52 7 0 0 008 -40 97 11 74 05/18/93 51 6B 0 0 017 -39 95 11 74 06/14/93 51 86 0 0 017 -40 14 3 9 700 51 65 310 11 74 07/19/93 51 48 0 0 008 -39 75 11 74 03/20/93 52 14 0 0 02S -40 43 11 74 00/23/93 52 16 0 0 013 -40 43 11 740 52 32 0 11 0111 -40 511