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Table 9 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2093 <br /> 3425 Tracy Blvd, Tracy, CA <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP {feet msl} (feet bgs) {feet msl} {/�g1L) {lig1L) {{rg1L} {pg/L} (Erg1L) (pglL) (lrgll) (mglL) Comments <br /> ATR-7 i 0/7/1994 -- 4965 1223 3742 <50 -- <05 <0 5 <0 5 <0 5 — -- <br /> 12l1611994 — 4965 1 1194 3771 <50 — <0 5 <05 <0 5 <0 5 -- <br /> 2/28/1995 -- 4965 1200 3765 <50 — <0 5 <0 5 <0 5 <0 5 -- - <br /> 4/25/1995 — 4965 1241 3724 <50 <0 5 <0 5 <0 5 <0 5 — ~ <br /> 7/27/1995 — 4965 1261 3704 <50 - <0 5 <0 5 <0 5 <0 5 -- - <br /> 10/26/1995 -- 4965 1267 3698 <50 -- <0 5 <0 5 <05 <0 5 -- - <br /> 2/12/1996 -- 4965 11 95 3770 <50 — <0 5 <0 5 <0 5 <0 5 — <br /> 4/18/1996 — 4965 1235 3730 <50 - <0 5 __<0_5__<05 <0 5 — — <br /> 7/18/1996 -- 4965 1245 3720 <50 -- <0 5 <05 <0 5 <0 5 28 <br /> 1 1/15/1996 -- 49 65 1311 36 54 <50 _ <0 5 <0 5 <0 5 <0 5 120 - <br /> 3l1411997 -- 49 65 1320 3645 <50 <05 <05 <0 5 <p 5 fi 3 D i <br /> 6/4/1997 NP 4965 1244 3721 <50 — <0 5 <0 5 <0 5 <0 5 <2 5 013 <br /> 8/11/1997 NP 49 65 1272 3693 <50 — <'' <br /> <0 5 <0 5 <0 5 22 - <br /> 11117l1997 NP 4965 1266 3699 <50 <0 5 <0 5 <0 5 <0 5 35 -- <br /> 3/30/1998 NP 4965 1211 3754 <50 -- <0 5 <05 <0 5 <0 5 <50 13 <br /> 6/25/1998 NP 4965 1246 3719 <50 -- <0 5 <0 5 <0 5 <0 5 <50 2 5 <br /> 911 1-119-98 NP 4965 1251 3714 <50 - <05 <05 <0 5 <0 5 <25 1 14 <br /> 1 2/1 511 998 NP 4965 1241 3724 <50 -- <05 <05 <0 5 <0 5 <50 22 <br /> 3/17/1999 1 NP 4965 1223 3742 <50 — P<0 <br /> 05 <0 5 <0 5 <0 5 <50 2 <br /> 5/1411999 NP 4965 1241 3724 <50 - 0 5 <05 <0 5 <0 5 <50 19/16/1999 NP 4965 1258 37Q7 <50 0 5 <05 <05 <05 <50 36 <br /> 12/22/1999 NP 4965 1252 37 13 <50 5 <05 <0 5 <0 5 <2 50 42 <br /> 2/29/2000 NP 4965 1 1206 3759 <50 - <0 5 <0 5 <0 5 <0 5 <2 50 47 <br /> 6812000 NP 49 65 1255 3710 <50 — <0 5 <0 5 <0 5 <0 5 572 — <br /> 9/25/2000 NP 4965 1271 3694 <50 -- <05 <0 5 <0 5 <0 5 <2 50 0 5 <br /> 12/29/2000 P 4965 1243 3722 <50 0 — <0 500 <0 500 <0 500 0 656 17 5` 67 <br /> 312712001 P 4965 1233 3732 <50 0 -- <0 500 <0 500 <0 500 <0 500 305' 38 <br /> 6/20/2001 P 4965 1247 3718 <50 — <050 <0 50 <0 50 <0 50 580" - <br /> 9/12/2001 P 4965 1250 37 15 <50 -- <0 50 <0 50 <0 50 <0 50 140 12 <br /> 12/19/2001 P 4965 1235 3730 <50 — <0 50 <0 50 <0 50 <0 50 7 2' 1 01 <br /> 3/14/2002 P 4965 1242 3723 <50 -- <0 50 <0 50 <0 50 <0 50 14" 066 <br /> 6/28/2002 P 49 65 1248 3717 <50 -- <05 <05 <0 5 <0 5 1 0 97' 36 <br /> 9111/2002 P 49 65 1244 3721 <50 -- <0 5 <0 5 <0 5 <D 5 1 1* 29 <br /> Page 14 of 27 <br /> Report Date October 14,2004 <br />