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Cumulative Table of Well Uata and Analytical Results sults Vertical Measurements are in feet Analytical results are in parts per billion(ppb) - Well Ground Dept "' —• DATE Head Water To Notes TPH- Benzene Toluene Ethyl- Xylene MTBE Elev Elev _ Water Gasoline Benzene �yzrJ 03/11/92 1 43 -1556 1699 -- _. -- __ 03/17/92 1 43 -1552 1695 -- 3900 63 23 370 57 -- 06/29/92 143 -1705 1848 -- 750 4 0 3 0 49 ND -- 12/10/92 1 43 -1765 1908 -- 700 ND 32 3 4 06 -- 02/04/93 1 43 -1556 1699 -- 620 ND 1 7 03 ND 05/18/93 1 43 -13 75 1518 -- 760 ND 3 7 15 6 0 _- 08/05/93 143 -1462 1605 -- 1300 ND 77 3 9 1 6 -- 11/09/93 1 43 -1516 1659 630 3 5 14 ND 0 6 -- 01/18/94 1 43 -1482 1625 -- 470 6 1 2 8 14 08 06/27/94 1 43 -1413 1556 -- 320 3 5 1 1 16 3 5 _. 09/29/94 1 43 -1527 1670 -- 780 8 0 2 5 49 5 5 -- 12/08/94 1 43 -1492 1635 - 430 3 2 3 4 3 9 1 5 03/08/95 1 43 -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 - 09/11/95 143 -1299 1442 -- 1200 11 1 1 120 <1 0 - 12/05/95 1 43 -1347 1490 - 2000 63 <5 0 200 19 -- 03/18/96 1 43 -943 1086 -- 220 2 6 <0 5 <0 5 c0 5 -- 06/18/96 1 43 -960 11 03 -- 300 3 5 <0 5 <0 5 <0 5 18 09/24/96 1 43 -11 35 1278 -- 870 44 <0 5 09 13 47 12/04/96 1 43 -1094 1237 -- 200 <0 5 <0 5 <0 5 0 7 75 02/25/97 143 -733 876 -- 4700 25 2 0 91 12 89 05/06/97 1 43 -764 907 - 930 5 2 <0 5 1 8 <0 5 45 09/29/97 1 43 -1041 11 84 -- 410 1 6 0 6 <0 5 <0 5 23 11/25/97 1 43 -1039 11 82 160 3 7 <0 5 <0 5 <0 5 03126/98 1 43 -4 63 606 "' 5900 <2 5 <2 5 41 27 <12 �-Op 61162-6Cp) ' MTBE by EPA 8260 was detected at 38 ppb Ethanol,t-Butanol, DIPS,TAME and ETBE by EPA 8260 and Methanol by EPA 8020 were not detected,see lab report for detectlon limits "No value for MTBE could be determined,see lab report See Table of Additional Analyses Blaine Tech Services,Inc 980326-G-1 1 st-G 1998 Monitoringat Chevron 9-4275 2905 W Benjamin Holt Dr,Stockton.CA 10