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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 k MEASURED AMSL TO FLUID PRODUCT WATER EPA METHOD 8015 MODIFIED ETHYL- IN FEET IN FEET IN FEET ELEVATION GASOLINE KEROSENE DIESEL OIL BENZENE TOLUENE BENZENE XYLENE TOP OF BMSL CASING IN FEET PPM PPM PPM PPM PPB PPB PPB PPB 06/18/93 13 53 53 44 0 -39 91 <O 05 NR NR NR <0 3 <0 3 <0 3 <O 9 L/ 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 OS 0 -38 18 11/21/90 14 71 58 36 0 -39 39 31 NR NR NR 5 400 7 300 110 7,800 11/27/90 14 71 58 3 0 -39 33 03/29/91 14 71 56 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 LS $8 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 <O 3 <0 3 <0 9 06/02/92 15 58 59 2 0 -39 30 <0 05 NR NR NR <0 3 <0 3 <0 3 <O 9 09/11/92 15 58 64 5 0 -44 21 <0 05 NR NR NR <0 3 <O 3 <0 3 4 1 SURVEYED 10/01/92 14 88 12/07/92 14 88 62 97 0 -43 49 0 16 NR NR NR c0 3 <0 3 1 2 35 03/30/93 14 88 57 92 0 -38 81 0 37 NR NR NR O 4 <O 3 4 3 56 06/18/93 14 88 57 34 0 -36 27 0 64 NR NR NR <O 3 <0 3 5 4 120 ✓ MW6 08/24/90 14 77 57 31 0 -42 54 <0 05 <0 05 <O 05 NR <O 3 <0 3 <0 3 <O 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 11 0 -40 34 03/29/91 14 77 55 56 0 -40 79 <0 05 NR NR NR <0 3 <O 3 <0 3 <0 9 06/24/91 16 03 57 66 0 -41 63 c0 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 62 0 -40 79 c0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 06/02/92 16 03 57 38 0 -41 35 c0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 09/11/92 16 03 DRY 0 ERR WELL =RY AT MEASURED DEPTH OF 56 5' SURVEYED 10/01/92 15 09 12/07/92 15 09 58 62 0 -43 53 ONLY 15 OF WATER IN WELL, NOT ENOUGH TO SAMPLE 03/30/93 15 09 56 5 0 -41 41 NR NR NR <0 3 <0 3 <0 3 <0 9 D6/16/93 15 09 53 75 0 38 66 <O 05 NR NR NR <0 3 <O 3 <0 3 <0 9 MW7 07/24/92 13 03 $5 fib 0 -42 63 c0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 09/11/92 13 03 57 4 0 -44 37 <0 05 NR NR NR <0 3 <0 3 <O 3 <0 9 SURVEYED 10/01/92 12 09 12/07/92 12 09 57 34 0 -45 25 c0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 03/30/93 12 09 53 75 0 -41 66 c0 05 NR NR NR <0 3 <0 3 <0 3 <0 9 06/18/93 12 09 NM 0 ERR <O 05 NR NR NR <0 3 <0 3 0 4 15 AMSL ABOVE MEAN SEA LEVEL PPB PARTS PER BILLION UG/L NR NOT RAN BMSL BELOW MEAN SEA LEVEL SB SOIL BORING ► Single peak-does not match PPM PARTS PER MILLION MG/L OR MG/KG MW MONITOR WELL typical gasoline pattern 11