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Cumulative Table of Well Data and Analytical Results r Vertical Measurements are In_W Analytical results are In parts per billion(ppb) `well- Ground Depth = DATE Head Water To Notes TPH- Benzene Toluene Ethyl- Xylene MTBE Elev Elev Water Gasoline Benzene MW-6 03/11/92 1 43 -1556 1699 -- -- -- -- -- -- -- 03/17/92 143 -1552 1695 3900 63 23 370 57 -- 06/29/92 143 -1705 1848 -- 750 4 0 3 0 49 ND -- �' 12/10/92 143 -1765 1908 -- 700 ND 3 2 3 4 0 6 -- 02/04/93 143 -1556 1699 -- 620 ND 17 0 3 ND -- 05/18/93 143 -1375 1518 -- 760 ND 3 7 1 5 6 0 -- f 08/05/93 143 -1462 1605 -- 1300 ND 7 7 3 9 1 6 -- 11/09/93 143 -1516 1659 -- 630 3 5 1 4 ND 0 8 01/18/94 143 -1482 1625 -- 470 61 2 6 14 0 8 -- 06/27/94 143 -1413 1556 -- 320 3 5 1 1 16 3 5 -- t 09/29/94 143 -1527 1670 -- 780 80 2 5 49 5 5 -- �`; 12/08/94 1 43 -1492 1635 -- 430 3 2 3 4 3 9 1 5 -- 03/08/95 143 -1272 1415 -- 90 <0 5 <0 5 <0 5 <0 5 -- �' 06/01/95 143 -11 18 1261 .. 1500 6 9 0 5 120 4 7 -_ 09/11/95 1.43 -1299 1442 1200 11 1 1 120 <1 0 12/05/95 143 -1347 1490 -- 2000 63 <5 0 200 19 -- 03/18/96 143 -943 10 86 -- 220 26 <0 5 <0 5 <0 5 -- 06/18/96 143 -960 11 03 -- 300 3 5 <0 5 <0 5 <0 5 18 09/24/96 143 -1135 1278 -- 870 44 <0 5 0 9 13 47 12/04/96 143 -1094 1237 -- 200 <0 5 <0 5 <0 5 0 7 75 r 02/25/97 143 -733 876 -- 4700 25 2 0 91 12 89 E 05/06/97 1.43 -7 64 907 -- 930 52 <0 5 1 8 <0 5 45 09/29/97 143 -1041 11 84 410 1 6 0 6 <0 5 <0 5 23 11/25197 143 -10.39 11 82 160 3 7 <0 5 <0 5 <0 5 'MTBE by EPA 8260 was detected at 38 ppb Ethanol,t-Butanol,DIPE,TAME and ETBE by EPA 8260 and Methanol by EPA 8020 were not detected,see lab report for detection limits "No value for MTBE could be determined,see lab report F it 7' ,, Blaine Tech Services,Inc.971125-S-1 4th-0 1997 Nbnitoring at Chevron 9-4275 2905 W Benjamin Holt Dr.Stockton,CA 8