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li t Page 10 of 19 ll Table i Groundwater Elevation and Analytical Data ARCO Seance Station#2093 '3425 Tracy Blvd,Tracy,CA u Well Depth Groundwater Groundwater Product Ethyl- Xylenes Well Date Elevation to Water Elevation f ElevationThickness TPHg Benzene Toluene benzene (total) MtBE DO Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) j Change(ft)II (ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) ATR-6 12/22/99 1206 3729 0 11 -- -- -- -- 22 _ (cont} 2129100 NP 1165 3770 041 - <50 <0 5 <D 5 <0 5 <0 5 107 5 0 6/7/00 NP 1210 3725 -0 h45 -- -. -- __ -- 9125100 NP 1222 37 13 -01112 i <60 <0 5 <0 5 <0 5 <0 5 <2 50 070 12/29/00 1200 3735 022 3127101 P 1193 3742 h; 0 1407 - <50 0 <0 500 <0 500 <0 500 <0 500 521' 41 6/20/01 1204 3731 -4,111 -- — -- -- -- WI 2101 -9112101 P 12.03 3732 0 01 — <50 <0 50 <0 50 <0 50 <0 50 12 18 ATR-7 3110/89 49 65 -- -- I -- <200 <0 5 <0 5 <0 5 17 6121189 11 90 37 75 � tj 1 -- <50 1 <0 3 0 6 05 - -- 9/18/89 1198 3767 -D 08 — <50 0 4 <0 3 <0 3 1 1 -- - 12/27/89 1194 3771 0 b4 — 90 10 0 9 27 7 9 - - 4/18l90 1201 37 64 -0107 -- <60 61 2 6 2 1 5 8 -- 1 Q/16J90 -- i I i <-- <50 <0 5 <0 5 <0 5 s <0 5 - 10/19/90 1220 3745 1110191 -- -- <SD 6 <0 5 1 8 41 4110191 -- - _ -- 7/10/91 -- - -- 9/24/91 12 34 3781 �- -- -- -- -- 9/25191 -- -- ;� -- <50 13 <0 5 <0 5 <0 5 -- -- 1/23182 -- -- - -- .. 4/20/92 7/8/92 1017/92 1221 3744 j�- If -- -- -- -- -- 10/8/92 -- -- -- <50 <0 5 <0 5 <0 5 <0 5 -- - 1/18/93 11 33 3832 1/19193 -- - -- <50 1 <0 5 0 6 r, <0 5 4114193 1175 3790 -. .. .. .. - 4/15193 <54 2 9 <D 5 <0 5 <0 5 - -- 8/31193 1224 3741 4- -- <50 <0 5 <0 5 <0 5 <0 5 -- 10027/93 1223 3742 0 01 I — <50 <0 5 <0 5 <0 5 13 - 2118/94 1193 3772 0 30 -- <10 <0 3 <0 3 <0 3 <D 5 -- 5120/94 1200 3765 �I, -0 07 I -- <10 <0 3 <0 3 <0 3 <0 5 iDd7/94 1223 3742 .0123 -- <60 <0 5 <0 5 <0 5 <D 5 - 12116/94 1194 3771 029 j - <50 <0 5 <0 5 <0 5 , <0 5 -- -- f Projects/ASD/2093/ReportslTablestgwtables2D93 As