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Table 2 MSTORIC GROUNDWATER LEVELS AND CHEMICAL ANALYSIS RESULTS August 2003 Through November 2003 Former BP Od 11192 Date TOC Depth to LPH (around- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevatton Water Thickness water in 8260B benzene Xylenes 8021B 8260B Elevation Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg11) (1811) (ggll) (µg/1) (ggll) (110) (µg/1) MW-1 8114/03 500 1531 000 -1031 -- -- NDQ50 ND<2 5 ND<2 5 ND<2 5 ND<5 0 — ND<10 11/26/03 500 1618 000 -11 18 -087 - ND<50 ND<0 50 ND<O 50 ND®50 ND MW-3 8114/03 568 1604 000 -1036 -- -- NDc10M ND<100 ND<100 ND<100 ND<200 -- ND<400 11/26/03 568 1696 000 -1128 -092 -- ND<IWOO ND<100 ND<100 NIX100 ND<200 -- ND<400 MW-4 8/14103 621 1651 000 -1030 — — ND<50 ND<O 50 ND<O 50 NDm 50 ND<1 0 -- 42 11/26/03 621 1837 000 -1216 -186 — 130 ND<O 50 070 ND<0 50 ND<1 0 -- 71 MW-5 8/14103 563 1581 000 -10 l8 -- - 61 ND<0 50 ND<D 50 ND<O 50 ND<10 -- 23 11/26/03 563 1671 000 -1108 -090 -- ND<50 ND<O 50 ND<O 50 NDm 50 ND<1 0 -- 69 MW-6 8/14103 529 1543 000 -1015 -- - ND<50 ND<O 50 ND<0 50 ND<O 50 ND<10 — ND<2 0 11/26103 528 1629 000 -1101 -086 -- 50 ND<O 50 ND<O 50 ND<O 50 ND<10 -- 73 MW-7 8/14103 569 1607 000 -1038 -- -- ND<10000 ND<100 ND<100 ND<100 ND<200 -- ND<400 11/26/03 569 1697 000 -1128 -090 - ND<M o ND<200 ND<200 ND<200 ND<400 -- ND<800 MW-8 8/14/03 479 1496 0 00 -1017 — -- ND<50 ND<O 50 ND<0 50 ND<O 50 ND<1 0 — ND<2 0 11/26/03 479 1583 000 -1104 -087 -- ND<50 ND<O 50 ND<O 50 ND<O 50 ND<10 — ND<2 0 MW-9 8/14/03 426 1481 000 -1055 — -- ND<50 ND<0 50 ND<O 50 ND<0 50 ND<l 0 -- ND<2 0 11/26/03 426 1572 000 -1146 -091 -- ND<50 ND<0 50 ND<0 50 ND<O 50 ND<1 0 -- ND<2 0 MW-10 8114/03 406 1443 000 -1037 -- -- ND<50 ND<O 50 ND<D 50 ND<O 50 ND<1 0 -- ND<2 0 11152 Page 1 oft