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. I Cumulative Table of Well Data and Analytical Results Vertical Measurements are In feet Analytical results are in parts per billion{ppb} r; Well roupd Depth- DATE Head Water To Notes TPH- Benzene Toluene Ethyl- Xylene MTBE Elev Elev Water Gasoline Benzene MW-4 _ ' 03/22/89 2 81 -1348 1629 -- ND NO NO NO NO 08/12/89 281 -1416 1697 -- ND NO NO NO NO -- 7`' 09/07/89 2 81 -15 54 1835 -- 170 1 7 NO ND NO 12/18/89 2 81 -1499 1780 -- NO NO ND ND ND li, 03/20/90 2 81 -1459 1740 -- 85 2 9 NO NO 0 9 -- 07/03/90 2 81 -1524 1805 -- 93 ND ND NO ND 10/19/90 281 -16 77 19 58 -- 73 ND 2 8 15 ND -� ` 01/17/91 2 81 -1638 1919 -- 150 NO NO ND NO -- 03/19/91 2 81 -- -- -- 100 NO NO ND NO -- 07/18/91 2 81 -1624 1905 -- 81 NO ND NO NO 10/31/91 281 -1671 19 52 180 NO NO NO NO 01/16/92 2 81 -1601 1882 -. NO NO ND 05 20 -- 03/11/92 281 -1509 1790 -- -- -- -- -- -- 03/17/92 281 -1497 1778 -- 150 29 97 30 97 06/29/92 2 81 -1659 1940 -- 130 2 9 0 6 0 9 1 1 ,1 12/10/92 2 81 -1722 2003 -- NO NO ND ND ND -- 02/04/93 2 81 -1554 1835 -- 64 NO ND NO ND -- 05/18/93 281 -1323 1604 -- ND NO ND NO ND 08/05/93 2 81 -1402 1683 -- NO NO ND NO ND -- 11/09/93 2 81 -14 71 1752 -- NO ND ND NO ND 01/18/94 2 81 -1412 1693 -- NO NO NO NO ND -- 06/27/94 2 81 -13 63 1644 -- ND NO NO NO ND -- 09/29/94 2 81 -1483 1764 -- ND NO NO NO ND -- 12/08/94 2 81 -1455 1736 -- <50 <0 5 <0 5 <0 5 <0 5 -- 03/08/95 281 -1268 1549 -- <50 <0 5 <0 5 <0 5 <0 5 -- 06/01/95 281 -1080 1361 -- <50 <0 5 <0 5 <0 5 13 -- { 09/11/95 281 -12 52 1533 -- <50 <0 5 <0 5 <0 5 <0 5 -- E 12/05/95 281 -1077 1358 -- <50 <0 5 <0 5 <0 5 <0 5 -- 03/18/98 2 81 -967 1248 -- <50 <0 5 <0 5 <0 5 <0 5 -- 06/18/96 2 81 -939 1220 -- 60 <0 5 <0 5 <0 5 <0 5 65 09/24/96 2 81 -1099 1380 -- 60 <0 5 <0 5 <0 5 0 8 52 12/04/96 2 81 -1091 1372 -- <50 <0 5 <0 5 <0 5 <0 5 36 02/25/97 2 81 -672 9 53 -- 110 0 5 <0 5 <0 5 <0 5 16 05/06/97 2 81 -7 70 1051 -- <50` <0 5 <0 5 <0 5 <0 5 3600 09/29/97 2 81 -1041 1322 <1000 <10 <10 <10 <10 2100 11/25197 2 81 -1039 1320 "" <50 <0 5 <0 5 <0 5 <0 5 48 ` The TPH-Gasoline was 1400 ppb which was attributed to the presence of MTBE "MTBE by EPA 8260 was detected at 54 ppb Ethanol,t-Butanol, DIPE,TAME and ETBE by EPA 8260 and Methanol by EPA 8020 were not detected, see tab report for detection limits I Bialne Tech Services,Inc 971125-S-1 4th-0 1997 Monitoring at Chevron 9-4275 2905 W Benjamin Holt Dr,Stockton,CA 6