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•Groundwater Monitorinngg D D. nd Analytical Results <br /> Chevron Service Station#9-1848 <br /> 1257 Yosemite Avenue <br /> i <br /> Vertical Measurements are in feet Manteca,California Analytical Results are in parts per billion(ppb) <br /> We]I Ground Depth Total <br /> DATE Head Water TO TPH- TPH- Benzene Toluene Ethyl- Xylenes MTBE Oil& <br /> Elev Elev Water Diesel Gasoline Benzene Grease <br /> C-3 <br /> 07/29/91 2792 9 17 1875 - <50 <0 5 <0 5 <0 5 <0 5 - <br /> 10/29/91 2792 1039 1753 - <50 <0 5 <0 5 <0 5 <0 5 <br /> 01/24/92 2792 1176 1616 - 140 <0 5 1 3 <0 5 <0 5 <br /> 04/17/92 2792 1215 1577 - <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/07/92 2792 977 1915 - <50 <0 5 <0 5 <0 5 <0 5 - <br /> 11/17/92 27 92 985 1807 -- <50 0 6 l 2 0 6 1 8 <br /> 02/20/93 2792 1302 1490 -- <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 05/19/93 2792 11 79 1613 - <50 <0 5 <0 5 <0 5 <1 5 <br /> 08/26/91 2792 8 05 1987 -- <50 <0 5 <0 5 <0 5 <1 5 <br /> 11/22/93 2792 1072 1720 - <50 <0 5 <0 5 <0 5 <0 5 <br /> 02/02/94 27 92 1247 15 45 - <50 <0 5 <0 5 <0 5 1 9 <br /> 05/10/94 27 92 12 12 1580 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 08/16/94 2792 791 2001 -- <50 <0 5 <0 5 <0 5 <0 5 - <br /> 11/10/94 27 92 11 08 1684 <50 <0 5 <0 5 <0 5 <0 5 <br /> 02/24/95 2792 13 37 1455 - <50 <0 5 <0 5 <0 5 <0 5 <br /> 05/16/95 2792 1368 1424 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 08/25/95 2792 894 18 98 - <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/01/95 2747 1060 1687 <50 <0 5 <0 5 <0 5 <0 5 <br /> 02/07/96 2747 1293 1454 - <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 05/10/96 2747 12 17 1530 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 08/22/96 2747 943 1804 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 11/06/96 2747 11 72 1575 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 02/28/97 2747 1410 1337 - <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 05/21/97 2747 1357 1390 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 08/26/97 2747 1 1 57 1590 -- <50 <0 5 <0 5 <0 5 <0 5 <2 5 <br /> 11/20/97 2747 1269 1478 <50 <0 5 <0 5 <0 5 <0 5 <2 5 -- <br /> 9-1848 xis/#386392 4 As of 08/03/00 <br />