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• TABLE 1 REGAL 604 GROUND WATER MONITORING DATA 1448 N EL DORADO STREET, STOCKTON, CALIFORNIA MONITOR DATE ELEVATION DEPTH FLOATING GROUND TOTAL PETROLUEM HYDORCARBONS BTEX, EPA METHOD 602 WELL # MEASURED AMSL TO FLUID PRODUCT WATER EPA METHOD 8015 MODIFIED ETHYL- IN FEET IN FEET IN FEET ELEVATIONGASOLINE KEROSENE DEISEL OIL BENZENE TOLUENE BENZENE XYLENE TOP OF BMSL PPM PPM PPM PPM PPB PPB PPB PPB CASING IN FEET 03/29/91 13 54 54 55 0 -41 01 DID NOT RUN-TO SILTY 06/24/91 14 92 56 87 0 -41 95 <0 05 NR NR NR 19 2 <0 3 <0 9 09/15/91 14 92 59 6 0 -44 68 NOT SAMPLED-SILTY CLAY ON BOTTOM-NO RECOVERABLE WATER 12/16/91 14 92 56 33 0 -41 41 0 3 NR NR NR <0 3 <O 3 <D 3 <0 9 03/05/92 14 92 54 84 0 -39 92 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 MW4 12/11/89 13 3 46 42 0 -33 12 <0 075 <0 075 <0 075 <0 075 <0 5 <1 0 <1 0 <2 0 01/04/90 13 3 44 56 0 -31 26 01/12/90 13 3 45 09 0 -31 79 <0 5 <0 5 <0 5 <0 5 6 7 <0 3 <0 3 <0 6 05/25/90 13 3 49 24 0 -35 94 06/08/90 13 3 49 35 0 -36 05 08/24/90 13 3 52 375 0 -39 D75 <0 05 <0 05 <0 05 NR <0 3 <0 3 <0 3 <0 9 09/05/90 13 21 52 8 0 -39 59 11/21/90 13 21 53 63 0 -40 42 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 11/27/90 13 21 53 53 0 -40 32 • 03/29/91 13 21 54 2 0 -40 99 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 06/24/91 14 49 56 48 0 -41 99 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 09/15/91 14 49 57 2 0 -42 71 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 12/16/91 14 49 56 02 0 -41 53 <0 05 NR NR NR <0 3 <0 3 <0 3 <O 9 03/05/92 14 49 54 84 0 -40 35 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 MW5 08/24/90 14 71 57 11 0 -38 23 4 <1 25 <1 25 NR 760 1,400 100 1,000 09/05/90 14 71 57 05 0 -38 18 11/21/90 14 71 58 36 0 -39 39 31 NR NR NR 5,400 7,3D0 110 7,800 11/27/90 14 71 58 3 0 -39 33 03/29/91 14 71 58 23 0 -39 27 22 NR NR NR 1,400 1,600 180 2,600 06/24/91 15 58 60 22 0 -40 24 0 2 NR NR NR 2 37 5 7 31 09/15/91 15 58 59 4 0 -39 48 0 4 NR NR NR 9 8 240 53 250 12/16/91 15 58 60 66 0 -40 65 0 19 NR NR NR <0 3 <0 3 1 4 23 03/05/92 15 58 59 22 0 -39 32 0 083 NR NR NR <0 3 <0 3 <0 3 <0 9 MW6 08/24/90 14 77 57 31 0 -42 54 <0 05 <0 05 <0 05 NR <0 3 <0 3 <0 3 <0 9 09/05/90 14 77 54 19 0 -39 42 11/21/90 14 77 55 14 0 -40 37 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 11/27/90 14 77 55 105 0 -40 335 03/29/91 14 77 55 56 0 -40 79 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 06/24/91 16 03 57 66 0 -41 63 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 09/15/91 16 03 57 66 0 -41 63 NOT SAMPLED NO WATER IN WELL-WELL DRY 12/16/91 16 03 57 36 0 -41 33 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 03/05/92 16 03 56 82 0 -40 79 <0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 AMSL ABOVE MEAN SEA LEVEL PPB PARTS PER BILLION UG/L NR NOT RAN SMSL BELOW MEAN SEA LEVEL SB SOIL BORING PPM PARTS PER MILLION MG/L OR MG/KG MW MONITOR WELL Page 16