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Tab <br /> Groundwater Monitoring Sand Analytical Results <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-3 <br /> 03/22/89 240 -1411 1651 - ND ND ND ND ND -- <br /> 06/12/89 240 -1479 1719 ND ND ND ND ND <br /> 09/07/89 240 -1624 1864 -- ND ND ND ND ND <br /> 12/18/89 240 -15 38 1778 - ND ND ND ND ND <br /> 03/20/90 240 -15 15 1755 - ND ND ND ND ND <br /> 07/03/90 240 -1631 1871 -- ND ND ND ND ND <br /> 10/19/90 240 -1723 1963 -- ND ND ND ND ND <br /> 01/17/91 240 -1694 1934 -- 70 ND ND ND ND <br /> 01/19/91 240 -- -- - ND ND ND ND ND <br /> 07/18/91 240 -1708 1948 ND ND ND ND ND <br /> 10/31/91 240 -1746 1986 -- ND ND ND ND ND <br /> 01/16/92 240 -1665 1905 -- ND ND ND ND 09 - <br /> 03/11/92 240 -15 55 1795 -- - -- - - -- <br /> 03/17/92 240 -1550 1790 - ND 07 1 1 ND 08 <br /> 06/29/92 240 -1705 1945 -- ND 09 ND ND ND - <br /> 12/10/92 240 -1767 2007 -- ND ND ND ND 05 <br /> 02/04/93 240 -1561 1801 -- ND ND ND ND ND <br /> 05/18/93 244 -1374 1614 -- ND ND 08 07 37 <br /> 08/05/93 240 -1460 1700 -- 120 05 22 ND 30 - <br /> 11/09/93 240 -15 18 1758 -- ND ND ND ND ND <br /> 01/18/94 240 -1480 1720 ND ND ND ND ND <br /> 06/27/94 240 -1410 1650 - ND ND ND ND ND <br /> 09/29/94 240 -1530 1770 ND ND ND ND ND <br /> 12/08/94 240 -1484 1724 -- <50 <0 5 <0 5 <0 5 <0 5 - <br /> 03/08/95 240 -1272 15 12 - <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 06/01/95 240 -1 l 12 1352 -- <50 <0 5 <0 5 <0 5 <0 5 - <br /> 09/11/95 240 -1301 1541 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/05/95 240 -1345 1585 -- <50 <0 5 <0 5 <0 5 <0 5 - <br /> 9 4275 xls/#386845 5 As of 09/13/00 <br />