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Table 1 Groundwater Monitoring Data and Analytical Results Former Unocal Service Station#2859 11665 Pacific Avenue r i �Stockton,California We1t1V Date DTW GWR TPH(G) B T E X MTBE TOC* { ) OMP {ppb) (ppb) (Ppb) {PPb) (ppb) (pP,�) j! 6�00 19 360 350 2,700 MW-6 03!04192 -- � -- �; f � -- 05/21/92 -- -- 110,000 85 1,100 1,200 7,400 -- 08/18/92 -- -- 5111,000 31 830 - 540 4,600 -- 1 11/13/92 -- -- 3 ! 53000_ 34 1,400 _870 8,200 1081 03/26193 4870 -3789 1 80000 160 1,300 1,100 10,000 -- 06/04/93 4692 -36 111� 19000 ND 240 550 3,900 -- 11/12/93 4726 -3645 1� 7 500 28 140 96 - 3,000 -- 02/18/94 4525 -3444 �, I� 11,000 12 250 490 2,800 --- - 05/23/94 43 48 , -33 17 j' 91300 a 41 110 _ - 300 ;F 1,800 08112/94 458o x -3499 ?` J 1"To 54 140 360 2,10011/08/94 4S 98 -35 17 j,_ 0 74- ND_ 077 1 1 -- 02/07/95 4366 -3285 120 1 1 ND 59 _24 s- 05/04/95 4026 -2945 2{900 12 "7 7 160 r 1 390 -- 08/10/95 - -- 4-= -- -- -- -- 08/26/95 4046 -2965 55 € 42 26 089 F 057 -- 11/09/95 4018 -2937 240 17 12 58 26 -- 02/08/96 3768 -2687 ( 169 14 ND 15 14 -- 05/08/96 3426 -2345 i, ND ND ND ND ND ND - 08/07/96 3494 -2413 ND ND ND _ ND i ND ND 11/14/96 3507 -2426 1f ND ND ND ND i e ND _ = ND 02/14/97 3129 -2048 ND ND ND ND ND "ND 05/07/97 2959 -1878 ND ND ND ND ND - ND a 03/06/98 2754 -1673 i ND ND ND - ND ND ND/ND 06/18/98 2471 -1390 1 ND ND ND ND ND - NDIND° 08/31/98 2548 -1467 1} ND ND ND ND ND ND/NW if 12/04/98 2539 -1458 �' ND ND ND ND ND ND/ND4 02/04/99 2471 -1390 ND ND ND ND ND --IND° 1019 03/12/99 2390 -1371 I iND ND ND ND ND ND 05/24/99 2312 -1293 jr ND ND ND ND ND ND 08/19/99 2446 -1427 { I 18010 089 ND 27 10 37 ` 11/22/99 2548 -1529 I ND ND <ND ND ND ND _ - 02/17/00 2465 .1446 j; l ND ND ' ND ND ND ND 06/01/10 22.32 -12.13 1 !ND ND 0.98 ND 12 ND j` u `E 2859 x1s/1654 As AW1/00 �� ,