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i 1 Table 1 Groundwater Monitoring Data and Analytical Results - Former Unocal Service Station#2859 I 1665 Pacific Avenue Stockton,California I WELL ID/ DATE DTW GWE III TPH-G B i T E X MTBE TOC*(ft) (fl') "(msl) l (ppb) (ppb) (ppb) (Ppb) (PPh) (ppb) � I ' MW-1 02/14/97 3021 x;20 551 ND ND, ND ND ND ND (cont) 05/07/97 2856 1;18 90 ND ND' ND ND ND ND 03/06/98 2654 16 88 , ND ND ND ND ND ND/ND° 06/18/98 2361 �'13 95 ND ND ND ND ND ND/NW 08/31/98 2444 '51478 ND ND ND ND ND NDINW ') li 12/04/98 2433 L 14 67 q ND ND ND ND ND NDMD4 02/04/99 2363 1397 ND ND ND ND 24 -423 (D) 02/04/99 -- ND ND 082 ND 1 6 -- 907 -907 03/12/99 2281 i-13 74 ND ND ND ND ND ND 05/24/99 2207 1300 ND ND ND ND ND ND 08/19/99 23 42 11435 ND 14 1 3 ND 30 ND 11/22/99 2442 -1535 ND ND ND ND ND 33 02/17/00 2359 -1452 ND ND 062 ND 085 ND li - 06/01/00 2126 -1219 ND ND 10 ND 15 ND 08/07/00 2268 -13 61 ND ND ND ND ND ND 11/13/00 2390 704 83 ND ND ND ND ND ND 02/08/01 2351 1444 ND ND ND ND ND ND 06/05-06/01 2324 -14 17 ND ND4, ND ND ND ND 08/16-17/01 2482 1-15 75 '<50 <0 50 <0 50 <0 50 <0 50 <2 5 11/16-17101 2630 117 23 h <50 <0 50 22 <0 50 28 <2 5 I) u 02/15-16/02 2475 I;15 68 <50 <0 50 <0 50 <0 50 <0 50 <5 0 05113-14102 2445 I-15 38 <50 <0 50 <0 50 <0 50 <0 50 <50 it I08/09-10/02 2655 47 48 <50 <0 50 <0 50 <0 50 <0 50 <2 5 1 _ t MW-2 06/06/88 - - I 99,000 5,700 48,800 5,000 25,000 -- 10/26/88 - - I 172,000 9,400 82,600 4,600 26,000 - 03/02/89 -- , -- 163,000 2,460 25,080 3,270 16,990 - 08/28/89 - - 220,000 6,800 44,000 4,000 21,000 11/30/89 - I - 200,000 16,000 35,000 2,700 14,000 - 03/01/90 - - 240,000 11,000 40,000 2,800 17,000 -- 05/30/90 -- s' -- I 260,000 27,000 - 66,000 5,100 27,000 -- 1> A 2859 x1s&54 110102 i' J