ARCHIVED REPORTS_XR0008602 CASE 1

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Table 2 30-0140 Summary of Results of Ground Yater Monitoring and Sampling Former MoblL Station 04-NP4 2375 Tracy Boulevard, Tracy, CaLlfornla Concentrations in parts per bittion (ppb) WELL DATE OF -CASING DEPTH-- -- GROUND FREE TPH-G B T E x FC FS LAB ID SAMPLING/ ELEVATION TO WATER PRODUCT (CFU/ (CFU/ MONITORING (ft-mal) WATER (ft) ELEVATION THICKNESS 100mL) 100mL) MW-6 09/25/91 25.63 5.60 20 03 0 00 20000 510 19 910 340 --- --- SEQ MW-6 12/10/91 25 63 4.88 20.75 0 00 7500 170 6 9 350 60 --- --- SEQ MW-6 03/25/92 25 63 4.28 21.35 0 00 5100 920 30 990 360 --- SEQ MW-6 06/25/92 25.63 6 79 19 54* 0.87 --- --- --- --- --- --- --- NA MW-7 02/09/87 --- ... 0 00 --- 6300 420 92 ... 1200 --- --- SAL MW-7 09/21/87 --- 0 00 ... ND<50 ND<O 5 ND<O 5 --- ND<O 5 --- --- SAL MW-T 10/20/87 --- --- 0 00 ... 65 ND<O 5 ND<O 5 --- 0 07 --- --- SAL MW-7 11/20/87 ... --- 0.00 ... ND<50 ND<O 5 ND<O 5 --- ND<O 5 --- --- SAL MW-7 03/13/88 26 50 6.75 19.75 ... --- --- --- --- ... --- NA MW-7 03/23/88 26.50 6 96 19 54 --- 57 5.9 ND<0 5 --- 1 --- --- SAL MW-7 06/07/88 26.50 6 75 19 75 --- --- --- --- --- ... --- --- NA MW-7 10/18/88 26 50 7 10 19.40 --- ND<50 ND<O 5 ND<O 5 NO<O 5 ND<0.5 --- --- SAL MN-7 02/15/90 26.50 5 80 20.70 0.00 3400 9 4 7 3 70 170 --- --- SAL MW-7 04/Z6/90 26 50 6.63 19.87 0 00 --- --- --- --- --- NA MW-7 07/12/90 26.50 6 66 19 84 0 00 ND<50 ND<O 3 ND<O 3 ND<O 3 ND<0.3 --- --- SAL MW-7 08/27/90 26.50 6 86 19 64 0 00 ... --- ... --- --- NA MW-7 11/02/90 26 50 7 03 19.47 0 00 --- --- --- --- ... ... - - NA MW-7 11/05/90 26 50 7.04 19 46 0 00 ND<50 ND<O 3 ND<O 3 ND<D 3 ND<O 3 ... --- SAL MW-7 02/25/91 26.50 6 30 20 20 0 00 ND<50 N0<0 3 ND<O 3 ND<0.3 ND<O 3 --- --- SAL MW-7 06/27/91 26 50 7 14 19.36 0 00 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 --- --- CAL MW-7 09/25/91 26 50 8 50 18.00 0.00 ND<30 ND<0.30 ND<0.30 ND<O 30 ND<0.30 --- ... SEQ MW-7 12/10/91 26.50 6.98 19.52 0 00 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 --- --- SEQ MW-7 03/25/92 26 50 6 53 19.97 0 00 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<0.30 --- --- SEQ MW-7 06/25/92 26 50 8.13 18.37 0 00 ND<30 ND<0 30 ND<O 30 ND<O 30 ND<O 30 --- --- SEQ MW-8 09/21/87 --- --- --- ... 2200 32 3 --- 480 ... --- SAL MW-8 10/20/87 ... --- --- --- 3800 20 5 --- 210 --- --- SAL MW-8 11/20/87 --- --- --- --- 140 ND<O 5 ND4 5 --- 16 --- --- SAL MW-8 03/13/88 25 66 6 08 19 58 --- --- --- --- --- --- --- --- NA MW-8 03/23/88 25.66 6 00 19 66 --- 15000 280 210 ... 3000 --- --- SAL MW-8 06/07/88 25 66 6.20 19.46 --- --- --- --- --- --- --- ... NA MW-8 10/18/88 25 66 6 53 19.13 --- 3400 28 ND<0.5 ND<O 5 630 --- --- SAL MW-8 02/15/90 25.66 6.55 19.11 0 00 ND<50 ND<O 3 ND<O 3 ND<O 3 ND<0.3 --- ... SAL MW-8 04/26/90 25 66 5.93 19.73 0.00 --- --- --- ... --- --- -- NA MW-8 07/12/90 25.66 5 98 19 68 0 00 1100 27 13 360 1000 --- ... SAL MW-8 08/27/90 25.66 6.27 19 39 0 00 ... --- --- - ... ... NA MW-8 11/02/90 25.66 6.35 19 31 0 00 --- --- --- --- ... ... --- NA MW-8 11/05/90 25.66 6.38 19 28 0.00 2200 23 7 130 340 --- --- SAL MW-8 02/25/91 25.66 5.53 20.13 0 00 8100 20 21 150 Z40 --- --- SAL MW-8 06/27/91 25 66 6.38 19.28 0 00 3100 7 3 ND<O 5 140 330 --- --- CAL I 30-Jul-92 Page 4 of 7