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0 <br /> • <br /> Table 1 <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) (pg/L) (Erg/L) (Ng/L) (pg/L) (pg/l) (pg/L) (lrg1L) (mg/L) Comments <br /> ATR-6 3/14/1997 -- 4935 <br /> 6/4/1997 — 4935 1201 3734 — — — -- — -- — 014 <br /> 8/11/1997 NP 4935 1223 3712 <50 <0 5 <0 5 <0 5 <0 5 56 - <br /> 11/17/1997 -- 4935 1224 3711 -- _ -_ .. -- <br /> 3/30/1998 <br /> _313011998 NP 4935 1169 3766 <50 — <0 5 <0 5 <05 <0 5 41 '19 <br /> 6/25/1998 -- 4935 1197 3738 -- -- _ — _ <br /> 9/11/1998 NP 4935 1208 3727 <50 — <0 5 <0 5 <0 5 <0 5 <50 127 <br /> 12/15/1998 -- 4935 1195 3740 -- - _ __ _ _ _ 09 <br /> 3/17/1999 NP 49.35 1186 3749 <50 <0 5 <0 5 <05 <0 5 <50 19 <br /> 5/14/1999 -- 49 35 1201 37 34 — - _ .. _. _ -- 24 <br /> 9/16/1999 NP 4935 1217 3718 <50 — <0 5 <0 5 <05 <0 5 <50 53 <br /> 12/22/1999 -- 4935 1206 3729 — - -- — - -- 22 <br /> 2/29/2000 NP 4935 11 65 3770 <50 <0 5 <0 5 <0 5 <0 5 107 5 <br /> 6/7/2000 NP 4935 1210 3725 -- — __ __ _- <br /> 9/25/2000 NP 4935 12 22 37 13 <50 - <0 5 <0 5 <05 <0 5 <2 50 07 <br /> 12/29/2000 — 4935 1200 3735 -- -- — -- — -- 51 <br /> 3/27/2001 P 4935 11 93 3742 <50 0 -- <0 500 <0 500 <0 500 <0 500 52 1* 41 <br /> 6/20/2001 -- 4935 1204 3731 -- _ _ — <br /> 9/12/2001 P 4935 1203 3732 <50 <0 50 <0 50 <0 50 <0 50 12 1 8 <br /> 12/19/2001 4935 11 95 37 40 -- _ .. __ — <br /> 3/14/2002 P 4935 11 97 3738 <50 - <0 50 <0 50 <0 50 <0 50 18. <br /> 086 <br /> 6/27/2002 -- 4935 — -- — <br /> 9/11/2002 P 4935 1200 3735 <50 — <0 5 <05 <0 5 <0 5 0 68* 1 4 <br /> 12!1712002 -- 4935 -- — -- _ — _ — _ — _ <br /> 03/31/2003 P 4935 1192 3743 <50 - <0 50 <0 50 <0 50 <0 50 1 2* 090 <br /> 06/09/2003 -- 4935 1162 3773 -- — -- — -- — -- -- Not Sampled <br /> 09/18/2003 P 4935 1210 3725 <50 <0 50 <0 50 <0 50 <0 50 11. 11 <br /> 12/24/2003 -- 4935 11 93 3742 — -- _ _- __ <br /> 03/12/2004 P 2116 1141 975 <50 -- <0 50 <0 50 <0 50 <0 50 1 1* 1 3 <br /> ATR-7 3/10/1989 4965 -- -- <200 - <0 5 <0 5 <0 5 17 -- — <br /> 6/21/1989 — 4965 1190 3775 <50 1 <0 3 06 0 5 -- — <br /> 9/18/1989 - 4965 1198 3767 <50 04 <0 3 <0 3 1 1 — <br /> 12/27/1989 -- 4965 1194 3771 90 — 10 09 27 7 9 -- — <br /> Report Date May 6, 2004 Page 12 of 25 <br />