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Tab <br /> Groundwater Monitoring nd Analytical Results S <br /> Chevron Service Station#9-4275 <br /> 2905 West Benjamin Holt Drive `- <br /> Vertical Measurements are in feet Stockton,California Analytical results are in parts per billion(ppb) <br /> Well Ground Depth <br /> DATE Head Water To Notes TPH- Benzene Toluene Ethyl- Xylenes MTBE <br /> Elev Elev Water Gasoline Benzene <br /> MW-4(cont) <br /> 07/03/90 281 -1524 1805 -- 93 ND ND ND ND - <br /> 10/19/90 281 -1677 1958 - 73 ND 28 1 5 ND <br /> 01/17/91 281 -1638 1919 -- 150 ND ND ND ND -- <br /> 03/19/91 281 - -- 100 ND ND ND ND <br /> 07/18/91 281 -1624 19 05 -- 81 ND ND ND ND <br /> 10/31/91 281 -1671 1952 -- 180 ND ND ND ND <br /> 01/16/92 281 -1601 18 82 -- ND ND ND 0 5 2 0 <br /> 03/11/92 281 -15 09 1790 -- -- -- -- -- -- <br /> 03/17192 2 81 -1497 1778 -- 150 29 9 7 3 0 9 7 - <br /> 06/29/92 281 -1659 1940 -- 130 2 9 0 6 0 9 1 1 <br /> 12/10/92 281 -1722 2003 ND ND ND ND ND - <br /> 02/04/93 281 -1554 1835 -- 64 ND ND ND ND <br /> 05/18/93 281 -1323 1604 -- ND ND ND ND ND - <br /> 08/05/93 2 81 -1402 1683 -- ND ND ND ND ND - <br /> 11/09/93 281 -1471 1752 -- ND ND ND ND ND <br /> 01/18/94 2 81 -1412 1693 -- ND ND ND ND ND <br /> 06/27/94 281 -1363 1644 -- ND ND ND ND ND <br /> 09/29/94 281 -1483 1764 - ND ND ND ND ND - <br /> 12/08/94 2 81 -1455 1736 - <50 <0 5 <0 5 <05 <0 5 - <br /> 03/08/95 281 -1268 1549 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 06/01/95 281 -1080 1361 <50 <0 5 <0 5 <0 5 1 3 <br /> 09/11/95 281 -1252 1533 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/05/95 281 -1077 1358 <50 <0 5 <0 5 <0 5 <0 5 <br /> 03/18/96 281 -9 67 1248 -- <50 <0 5 <05 <0 5 <0 5 -- <br /> 06/18/96 281 -939 1220 - 80 <0 5 <0 5 <05 <0 5 65 <br /> 09/24/96 281 -1099 1380 -- 80 <0 5 <0 5 <0 5 0 8 52 <br /> 12/04/96 281 -1091 1372 -- <50 <0 5 <0 5 <05 <0 5 36 <br /> 02/25/97 281 -672 9 53 -- 110 05 <0 5 <0 5 <0 5 16 <br /> 9 4275 xls/#386945 7 As of 09/13/00 <br />