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PaW of 36 Table 1 Groundwater Elevation and Analytical Data ARCO Service Station#2133 2908 Benjamin Holt Dr,Stockton,CA Well Depth Product Groundwater Groundwater Xylenes Well Date Elevation to Water Thickness Elevation Elevation TPHg Benzene Toluene Ethylbenzene (total) MtBE DO Number Sampled (ft,MSL) (ft,TOC) (ft) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) PRA 6/21/00 P 691 - -611 -171 <50 <0 5 <0 5 <0 5 <0 5 <2 5 46 (cont) 9/13100 NP 912 -- -832 -221 <50 <0 5 <0 5 <0 5 <0 5 <2 5 132 12/15/00 P 863 - -783 049 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 106 312/01 P 698 -- -618 165 <50 0 <0 500 <0 500 <0 500 0 502 <2 50 41 5110/01 Well inaccessible 8/22/01 Well inaccessible 12/5101 Well inaccessible 311 i/02 Well inaccessible 6/6102 P 783 -- -703 - <50 <0 50 <0 50 <0 50 <0 50 <2 5 018 9/24102 P 979 — -899 -196 <50 <0 50 <0 50 <0 50 <0 50 <2 5 03S PR-2 8/26/88 065 -- -- -- — -- <0 5 2 <0 5 3 -- 11/28/88 -- - -- - -- <0 5 <0 5 <0 5 <0 5 2/27189 -- -- - <0 5 <0 5 <0 5 <0 5 - 5130189 -- 8/22189 - -- - <0 5 <0 5 <0 5 <0 5 1214/89 -- -- -- -- -- -- - -- -- - 1/4190 1574 -- -1509 -- --21/1/90 1552 -1487 022 - -- -- -- _. 2115190 1549 -- -1484 003 -- -- - -- 2122190 1630 -1565 -081 - -- -- -- - 3/8190 1528 -- -1463 102 - <0 5 <0 5 <0 5 <0 5 4/5/90 1542 — -1477 -014 -- -- -- -- 4/19190 1650 -- -1585 -108 -- -- - -- - 5/10190 1589 -- -1524 061 -- - 5/24/90 1588 -1523 001 -- - - -- - 6/5/90 -- 6/18/90 1642 -- -1577 - -- -- -- -- - 7/12/90 1663 -- -1598 -021 -- -- - - 8/16190 1732 -1667 -069 - - - - - 9/17/90 1765 -- -1700 -033 -- -- -- .. __ 9/19/90 1765 -- -1700 000 <50 <0 5 <0 5 <0 5 <0 5 10/11/90 1729 -1664 036 -- -- 1216190 1714 -- -1649 015 -- -- -- -- -- 2111/91 1682 -- -1617 032 <50 <0 5 <0 5 <0 5 <0 5 2/25/91 1678 - -1613 004 ProaectstARCO/2133/Reports/Tables/gwtables2133 As