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Tab1eT Pagof 18
<br /> Groundwater Elevation and Analytical Data
<br /> ARCO Serme Stabon#2093
<br /> 3425 Tracy Blvd,Tracy,Califomia
<br /> Floabng
<br /> Well Depth product Groundwater Groundwater Total
<br /> Date Elevation to Water thickness Elevation Elevation Change TPHg Benzene Toluene Ethylbenzene Xylenes MTBE DO
<br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/1)
<br /> ATR 3 04/23/87 4993 1179 3814 -- 17,000 2,300 180 <5 0 2,300
<br /> 12/22/87 1193 -- 3800 -014 -- 5,000 50 530 250
<br /> 03/24/88 1258 -- 3735 -065 43,000 8,300 8,700 4,400 7,800
<br /> 06/23/88 11 17 -- 3876 141 70,000 6,160 4,221 1,800 4 750
<br /> 09/29/88 12 23 3770 -106 57,400 8,850 17,600 2,190 8 170
<br /> 02/22/89 1182 -- 3811 041 110,000 1,000 2,100 480 2,000
<br /> 06/29/89 -- -- -- 4,500 890 520 250 1,100
<br /> 09/18/89 1219 -- 3774 -- 7 400 1,000 1,300 460 2,200 -
<br /> 12/28/89 1201 -- 3792 018 27,000 840 1,400 840 5,600
<br /> 04/18/90 1215 -- 3778 -014 4,800 1,000 490 340 1,500
<br /> 10/16/90 1235 -- 3758 -020 14,000 1,900 1,300 780 4,600
<br /> 10/19/90 1228 3765 007 -- - - -
<br /> 01/10/91 1201 -- 3792 027 2,600 610 230 160 670
<br /> 04/10/91 1182 -- 3811 019 3,000 910 120 110 190
<br /> 07/10/91 1223 - 3770 -041 19,000 420 300 340 760
<br /> 09/24/91 1257 3736 034 2,000 280 81 69 130
<br /> 01/23/92 1212 Sheen 3781 045 -- - -- -- -
<br /> 04/20/92 1193 Sheen 3800 019 - -
<br /> 07/08/92 1222 Sheen 3771 -029 -
<br /> 10/07/92 1238 Sheen 3765 -016 -
<br /> 01/18/93 1122 Sheen 3871 1 16 --
<br /> 04/14/93 1149 Sheen 3844 -027 -
<br /> 08/30/93 1243 Sheen 3750 -094 - - -
<br /> 10/27/93 12 39 Sheen 3754 004 - -- - - -
<br /> 02/18/94 1200 -- 3793 039 1,900 200 27 120 140
<br /> 05/20/94 1207 Sheen 3786 -007 - - - -- --
<br /> 10/07/94 1238 Sheen 3765 031 -- -
<br /> 12/16/94 1203 Sheen 3790 036
<br /> 02/28/95 1205 003 3790 000
<br /> 04/26/95 1232 Sheen 3761 029 _
<br /> 07/27/95 1251 -- 3742 019 -
<br /> 10/26/95 (c) 1297 -- -- -- -- - - -
<br /> 02/12/96 1210 -- - -- 1,500 89 <0 5 43 150
<br /> 04/18/96 1260 - -- - -- -
<br /> 07/18/96 1260 -- 1,600 26 52 70 51 1,800
<br /> 11/15/96 1340 - - - "- _ -- "
<br /> 03/14/97 NP 1384 - -- 1,200 10 <0 5 43 19 620 005
<br /> 06/04/97 1270 -- - -- -- -- - - - -- 0 15
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