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TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER MONITORING J WELL ' f DATE OF CASING DEPTH TO GROUNDWATER TPH-GI TPH-D TPH B T E X MTBE HVOC DO LAB ID - SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ug/L)' (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug[L) (ug/L) (ppm) MONITORING (Feet) (Feet) (Feet) MW-1 12121/92 397 2040 -1643 2200 — -- 56 15 ND<0 5 89 — — --- MW-1 04104/93 397 1551 Al 54, 160 --- --- 92 ND<0 5 ND<0 5- 06 - — (0) --- — PACE MW-1 04/26/93 397 1725 -1328 — --- --- — --- --- — 460 (c) -- --- --- MW-1 10/05/93 397 1800 -1403 6000 — --- 450 41 17 18 350 (c) - --- PACE MW-1 01/07/94 397 1775 -1378 6600 --- — 410 200 45 460 2768 (o) — --- PACE QC-1 (d) 01/07/94 — — — 8700 --- — 460 240 57 600 2800 (c) — --- PACE MW-1 04/20/94 397 1698 -1301 63 -- — ND<0 5 ND<0 5 ND<0 5 ND<0 5 120 (c) --- 40 PACE QC-1 (d) 04/20/94 --- --- , --- ND<50 — — ND<0 5 ND<0 5 ND<0 5 ND<0 5 200 (c) — — PACE MW-1 04/25/94 397 1697 -1300 — — — -- — --- --- — -" MW-1 07/28/94 397 1741 -1344 430 — -- 36 12 24 71 --- (o) --- 39 PACE MW-1 12/09/94 397 1789 -1392 2200 — -- 36 74 37 17 — -- 41 PACE MW-1 03/03/95 397 1655 -1258 1400 (e) — — ND<2 5 ND<2 5 ND<2 5 ND<5 0 --- — 51 ATI QC-1 (d) 03/03/95 --- — — 1400 (e) -- --- ND<2 5 ND<2 5 ND<2 5 ND<5 0 — --- — ATI MW-1 04/12/95 397 1527 -1130 4700 , — - 310 ND<5 0 79 450 — — 78 ATI MW-1 07/20/95 397 1557 -1160 180 --- — 47 062 37 38 --- — 68 ATI MW-1 11/02/95 397 1645 -1248 1400 — -- 330 57 83 85 3100 --- 43 ATI MW-1 01116196 397 1586 -1189 1400 — --- 110 ND<5 0 ND<5 0 51 3900 --- --- ATE MW-1 04/22/96 3 97 13 75 -9 78 ND<50 — — ND<0 5 ND<1 ND<1 ND<1 27 --- --- SPL MW-1 07/12/96 397 1406 -1009 1100 --- — 70 ND<10 ND<10 ND<10 7700 — 24 SPL MW-1 11114196 397 1496 -1099 40000 --- — 350 ND<25 ND<25 ND<25 88000 — 33 SPL MW-1 03/11/97 397 1201 -804 ND<50 - --- ND<0 5 ND<1 0 ND QC-1 (d) 03/11/97 — — --- ND<50 — -- ND<0 5 ND MW-1 05/22/97 397 1264 -867 60 — — ND<0 5 ND<1 0 ND<1 0 ND<1 0 17 — 37 SPL MW-1 08/06/97 397 1380 -983 --- — — --- — ---_ --- — --- 62 — MW-1 09/22/97 397 1386 -989 ND<50 -- — ND<0 5 ND<1 0 ND<1 0 ND<1 0 ND<10 — 60 SPL MW-1 01/07/98 397 1367 -960 ND<50 --- - ND<0 5 ND<7 0 ND<1 0 ND<1 0 14 --- 57 SPL MW-1 07/01/98 397 986 -589 2600 --- --- ND<0 5 ND<1 0 ND<1 0 ND<1 0 7100 — 55 SPL MW-1 09/18/98 397 1150 -753 3000 — — ND<0 5 ND<1 0 ND<1 0 ND MW-1 (1) 01/19/99 397 --- — --- --- — -- --- — - --- Blain Services,Inc,Report 011109-K-1,BP Oil 11193 at 3202 W Hammer Lane,Ste,California . Page 1 f