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Tat Page o of 30 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2133 <br /> 2906 Benjamin Holt Dr,Stockton,CA <br /> Well Depth Product Groundwater Groundwater Xylenes <br /> Well Date Elevation to Water Thickness Elevation Elevation TPHg Benzene Toluene Ethylbenzene (total) MtBE DO <br /> Number Sampled (ft,MSL) ft,TOC) (ft) ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> 7/12190 1703 -- -1587 - <br /> 8/16/90 1712 -- -1596 -009 -- <br /> 9117/90 1772 -- -1656 -060 -- -- - -- - <br /> 9/16/90 1772 » -1656 000 1,100 100 12 45 28 <br /> 10/11/90 1776 -- -1660 -004 -- -- - -- <br /> 12J6/90 -- -- -- - -- - <br /> 2/12/91 1728 -- -1612 -- 840 33 8 72 21 <br /> 2/25/91 1722 -- -1606 006 -- -- - .- <br /> 4/23/91 1633 •• -1517 089 <br /> 7116191 1865 -- -1749 -232 <br /> 10/8/91 1900 -- -1784 -035 -- -- -- -- -- <br /> 1/22/92 1775 -- -1659 125 860 28 12 21 23 <br /> 4122/92 1681 -1565 094 500 <21 <3 2 <1 9 <1 9 <br /> 7/29/92 1827 -- -1711 -146 -- -- - - -- <br /> 10129/92 -- -- -- -- -- - <br /> 1/27/93 1548 -- .1432 - 660 <5 27 16 29 <br /> 4/29193 1373 — -1257 1 75 450 <3 4 <31 <20 <0 9 <br /> 8/5/93 1543 -- -1427 -170 360 <5 <3 29 09 <br /> 11/10/93 1567 - -1451 -024 150 16 06 14 06 <br /> 3121/94 1509 -- -1393 058 68 29 1 4 08 34 <br /> 6127194 1486 -- -1370 023 180 <0 3 <0 3 39 08 <br /> 9/29/94 1605 -- -1489 -119 <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/8/94 1565 -- -1449 040 <50 <0 5 <0 5 <0 5 <0 5 <br /> E 7 318195 1301 -- -11 85 264 <50 <0 5 <0 5 <0 5 <0 5 <br /> (cont} 611/95 1169 -- -1053 132 67 <0 5 <0 5 35 12 <br /> 9/11/95 1385 -- -1269 -216 75 <0 5 <0 5 05 <0 5 <br /> 1215/95 1420 -- -1304 -035 -- -- -- -- -- <br /> 3118/96 918 -- -802 602 <50 <0 5 <0 5 <0 5 <0 5 <br /> 6/18/96 1000 -- -884 -082 -- -- - _ - <br /> 9/25/96 1247 -- -11 31 -247 56 <0 5 <0 5 <0 5 <0 5 <5 <br /> 12/4/96 1188 -• -1072 059 -- .. -- __ -- .. <br /> 3119197 NP 734 — -618 454 <50 <0 5 <0 5 <0 5 <0 5 02 <br /> 615/97 P 887 -771 -153 -- -- -- - .- - 03 <br /> 8119197 NP 1042 -- -926 -155 54 <0 5 <0 5 <0 5 <0 5 <5 02 <br /> 11/25/97 P 1059 -• -943 -017 - -- - -- -_ - <br /> 3/19198 P 432 -- -316 627 <50 <0 5 <0 5 <0 5 <0 5 <5 21 <br /> 6/24198 639 -- -623 -207 -- - -- -- <br /> 9/10/98 NP 815 •• -699 -176 <50 <0 5 <0 5 <0 5 <0 5 <5 - <br /> 12/17/98 821 -- -705 -006 -- -- - <br />