ARCHIVED REPORTS_XR0008105 CASE 1

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TABLE 1101MMARY OF RESULTS OF GROUNDWATER MONITORING WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G B T E X NITBE DO LAB 11) SAMPLINGI ELEVATION (a) WATER THICKNESS ELEVATION (b) (ug/11) (ug/L) (ug/L) (uglL) (ug/L) (ug/L) (ppm) MONITORING (Feet) (Feet) (Feet) (Feet) MW-2 11120/87 -- -- -- --- ND<50 ND<0 5 ND<O 5 ND<0 5 — -- — MW-2 03/13/88 2633 567 -- 2066 MW-2 03/23/88 2633 563 — 2070 ND<50 ND<0 5 ND<0 5 -- ND<O 5 MW-2 06/07/88 2633 570 — 2063 — MW-2 10/18/88 2633 570 – 2063 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<0 5 — -- — MW-2 02/15/90 2633 535 2098 50 43 08 07 16 MW-2 04/26/90 2633 550 --- 2083 -- --- — — — — — MW-2 07/12/90 2633 548 2085 80 04 13 05 15 — — SUP MW-2 08/27/90 2633 580 --- 2053 — — __ _– — MW-2 11/02190 2633 585 -- 2048 — MW-2 11/05/90 2633 587 --- 2046 ND<50 ND<O 3 ND<O 3 ND<0 3 ND<O 3 -- -- SUP MW-2 02/25/91 2633 534 --- 2099 ND<50 ND<0 3 ND<O 3 ND<0 3 ND<O 3 — — SUP MW-2 06/27/91 2633 607 2026 ND<50 ND<0 5 ND<0 5 N0<05 ND<O 5 — -- CHR MW-2 09/25/91 2633 636 --- 1997 ND<0 30 ND<0 30 ND<0 30 ND<0 30 ND<0 30 — SEQ MW-2 12/10/91 2633 586 - 2047 ND<0 30 ND<0 30 ND<0 30 ND<O 30 ND<O 30 --- _- SEQ MW-2 03/25/92 2633 542 -- 2091 240 42 18 080 38 SEQ MW-2 06/25/92 2633 733 — 1900 ND<30 ND<0 30 ND<0 30 ND<O 30 ND<0 30 — SEQ MW-2 12/08/92 2633 591 — 2042 61 ND<0 5 ND<0 5 ND<O 5 ND<0 5 ANA MW-2 03/10/93 2633 569 -- 2064 220 35 06 57 92 (I) – PACE MW-2 06/16/93 2633 353 --- 2280 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 --- (I) PACE MW-2 10/22/93 2633 606 -- 2027 460 10 06 14 08 1600 QC-1 (d) 10/22/93 --- — – -- 460 09 07 14 08 1700 (c)(1) -- PACE MW-2 01/24/94 2633 563 -- 2070 ND<50 ND<O 5 ND<O 5 ND<0 5 06 209 (1) — PACE MW-2 06/07194 2633 608 — 2025 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<0 5 ND<5 0 (1) 28 PACE MW-2 09/13/94 2633 636 -- 1997 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 (1) 81 PACE MW-2 01110/95 2633 554 --- 2079 100 6 2 ND<O 5 12 — 52 ATI MW-2 03/23/95 2633 663 --- 2070 ND<50 053 ND<0 50 051 19 --- 89 ATI MW-2 10/04/95 2633 637 --- 1996 290 ND<1 0 ND<1 0 ND<1 0 ND<2 0 840 71 ATI MW-2 01/04/96 2633 590 -- 2043 3900 ND<25 ND<25 ND<25 ND<50 12000 30 ATI MW-2 03/29/96 2633 659 — 1974 9200 34 9 3 4 12000 36 SPL QC-1 (d) 03/29/96 --- — -- -- 11000 37 9 4 5 13000 --- SPL MW-2 07/01/96 2633 716 --- 1917 5200 58 33 ND<1 ND<1 10000 31 SPL MW-2 10/15/96 2633 734 — 1899 ND<250 ND<2 5 ND<5 0 ND<5 0 ND<5 0 14000 40 SPL MW-2 04/16/97 2633 598 — 2035 180 ND<0 5 ND<1 0 ND<1 0 ND<1 0 57 42 SPL MW-2 10/15/97 2633 608 -- 2025 ND<50 ND<0 5 ND<1 0 ND<1 0 ND<1 0 120 54 SPL QC-1 (d) 10/15/97 --- — -- — ND<50 ND<0 5 ND<1 0 ND<1 0 ND<1 0 120 --- SPL MW-2 03/17/98 2633 557 --- 2076 170 ND<0 5 ND<1 0 ND<1 0 ND<1 0 180 61 SPL MW-2 (h) 01/06/99 2633 — — -- --- __ — MW-2 09/13/99 2633 561 -- 2072 480 35 73 ND<5 0 ND<5 0 99000/91000 --- --- Blayne Tech Services, Inc,Report 011030-C-1, BP Oil 11194 at 2375 Tracy Blvd,Tracy,California Page 3