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0 . TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER MONITORING WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G 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-2 12/21/92 482 2126 -1644 1500 --- — 120 96 10 24 — -- — MW-2 04/04/93 482 1845 -1363 2600 --- — 460 13 77 81 -- (o) --- — PACE MW-2 04/26/93 482 1811 -1329 — --- — — — --- --- — MW-2 10/05/93 482 1885 -1403 1500 -- — 3200 120 540 710 — -- — PACE MW-2 01/07194 482 1848 -1366 1900 — — 400 13 56 79 431 (o) — — PACE MW-2 04/20/94 482 1782 -1300 18000 — — 3700 120 610 900 7100 (c) — 43 PACE MW-2 04125194 482 1780 -1298 — — -- --- --- — — --- — — MW-2 07/28/94 482 1814 -1332 28000 — --- 5300 80 750 340 — (o) — 43 PACE MW-2 12/09/94 482 1871 -1389 32000 --- --- 4000 150 760 800 — — 43 PACE MW-2 03/03/95 482 1735 -1253 2600 (e) --- --- 540 68 96 64 — — 49 ATI MW-2 04/12/95 482 1623 -1141 1800 --- --- 360 33 70 50 — — 76 ATI QC-1 (d) 04/12195 — — — 1900 --- --- 360 32 70 51 — — -- ATI MW-2 07/20/95 482 1645 -1163 8800 (e) --- --- 1600 22 290 290 — — 64 ATI QC-1 (d) 07/20/95 --- --- — 7200 (e) — --- 1300 17 240 240 — — -- ATI MW-2 11/02/95 482 1730 -1248 5000 --- — 780 14 150 140 7900 --- 52 ATI QC-1 (d) 11/02/95 — — --- 4800 — --- 840 15 160 140 8400 --- — ATI MW-2 01/16/96 482 1666 -1184 2000 --- --- 300 86 62 48 3200 — --- ATI QC-1 (d) 01116/96 --- --- --- 2000 — — 290 84 59 44 3000 --- — ATI MW-2 04/22/96 482 1482 -1000 680 --- — 140 4 36 12 1700 — --- SPL QC-1 (d) 04/22/96 490 — — 130 3 34 11 2100 -- — SPL MW-2 07112/96 482 1512 -1030 4800 --- --- 890 19 190 52 19000 — 22 SPL QC-1 (d) 07/12/96 — — — 5300 --- --- 990 21 220 55 20000 — — SPL MW-2 11/14/96 482 1603 -1121 24000 — --- 590 25 70 ND<25 18000 --- 29 SPL QC-1 (d) 11/14/96 --- --- --- 23000 --- — 570 ND<25 68 ND<25 21000 -- --- SPL MW-2 03/11/97 482 1286 -804 770 --- --- 12 ND<5 0 ND<5 0 ND<5 0 970 — 40 SPL MW-2 05/22/97 482 1345 -863 2700 — — 76 12 93 21 3100 — 42 SPL QC-1 (d) 05/22/97 — --- --- 2800 --- --- 77 1 1 95 21 3400 - --- SPL MW-2 08/06/97 482 1432 -950 — — — — — --- --- — --- 63 --- MW-2 09/22197 482 1341 -859 2400 --- — 730 10 79 74 2100 — 65 SPL MW-2 01/07/98 482 1437 -955 16 — — 90 ND<5 0 ND<5 0 ND<5 0 17000 --- 60 SPL QC-1 (d) 01/07/98 — — -- 12 --- -- 110 ND<1 0 ND<1 0 23 18000 --- --- SPL MW-2 07/01/98 482 1078 -596 1200 --- — 22 ND<1 0 21 ND<1 0 4900 — 48 SPL QC-1 (d) 07/01/98 — -- — 1000 — — 22 ND<10 19 ND<10 4800 --- --- SPL MW-2 09/18/98 482 1251 -769 12000 — — 69 18 ND<100 77 14000 --- 56 SPL QC-1 (d) 09/18/98 --- --- --- 13000 --- --- 56 17 ND<100 59 15000 --- — SPL MW-2 01/19/99 482 1251 -769 3500 --- — ND<1 0 ND<1 0 ND<1 0 ND MW-2 0) 10/14199 482 1339 -857 — -- --- --- --- — --- --- --- --- --- Blaine Tech Services,Inc,Report 011101-K-1,BP Oil 11193 at 3202 W Hammer Lane,Stockton,California Page 2