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• i • <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2130 <br /> 7906 N EL Dorado Street, Stockton, 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) (pglL) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> MW-10 9/28/1994 -- 1438 5811 4367 NA — NA NA NA NA NA — No FP, No S <br /> 9/29/1994 -- -- — — 1 100 — <0 5 <05 36 4 NA — No FP,No S <br /> 12/1/1994 - 1438 5715 4277 800 <0 5 23 0 8 13 NA -- No FP,No S <br /> 2/28/1995 - 1438 5424 -3986 300 — 0 9 <05 <0 5 <0 5 NA - No FP,No S <br /> 5/19/1995 — 1438 5232 -3794 370 0 9 <05 <0 5 <0 5 NA -- No FP, No S <br /> 8/28/1995 — 1438 5370 -3932 420 -- 1 2 <05 <0 5 <0 5 NA — No FP, No S <br /> 12/7/1995 — 1438 5261 -3823 490 -- 07 <0 5 <0 5 <0 5 NA -- No FP, No S <br /> 2/5/1996 1438 5013 -3575 350 - 07 <0 5 <0 5 <0 5 NA — No FP No S <br /> 5/30/1996 -- 1438 4709 -3271 350'*' -- <6'* <0 5 <05 <0 5 <6** - No FP,No S <br /> 9/18/1996 -- 1438 5084 -3646 510 -- <15** 1 <05 <0 5 <9** — No FP No S <br /> 11/26/1996 -- 1438 4872 -3434 <600*'* <0 5 <0 5 <0 5 <0 5 <10** — No FP,No S <br /> 3/24/1997 1438 4377 -2939 <500*** -- <5** <0 8** <05 <0 5 <7*' — No FP,No S <br /> 5/20/1997 1438 4420 -2982 460 -- <5** <0 5 <0 5 <0 5 <7** — No FP No S <br /> 8/19/1997 -- 1438 4766 -3328 440 <0 5 <05 <0 5 <0 5 <5 - No FP No S <br /> 11/19/1997 - 1438 4595 -31 57 510 -- 22 22 093 31 <5 <br /> 3/4/1998 -- 1438 4143 -2705 110 — 066 <0 5 <0 5 <0 5 <5 — No FP,No S <br /> 6/26/1998 - 1438 3911 -2473 329 -- 475 <0 5 <0 5 <0 5 <5 <br /> 911/1998 1438 4078 -2640 295 -- <05 j <0 5 <0 5 <05 <5 -- <br /> 12/2/1998 - 1438 3823 -2385 407 -- 689 <0 5 <0 5 0 873 195 -- <br /> 3/31/1999 — 1438 3471 -2033 217 -- 641 0 948 0 763 269 748 -- <br /> 6/4/1999 — 1438 3586 -2148 288 <0 5 <05 <0 5 <0 5 653 - <br /> 9/2/1999 - 1438 4026 -2588 152 -- <0 5 <05 <0 5 <0 5 <5 - <br /> 11/29/1999 — 1438 3858 -2420 198 358 <05 <0 5 061 9 08 <br /> 3/16/2000 -- 1438 3469 -2031 270 — 0 741 <05 <0 5 <0 5 595 — <br /> 6/26/2000 -- 1438 3705 -2267 389 — <0 5 <0 5 <0 5 <0 5 <2[2] - <br /> 9/28/2000 — 1438 4128 -2690 <50 — 087 <0 5 <0 5 <0 5 <2[2] — <br /> 12/19/2000 — 1438 3720 -2282 <50 - <05 <0 5 <0 5 <0 5 <25 <br /> 3/15/2001 — -- — — -- - -- -- -- -- -- -- Well Covered <br /> 6/20/2001 — 3698 - 11 000[5] -- <2[4] <2(4] <2[4] <2(4] <2[2] -- <br /> 9/12/2001 — __ — __ __ — _ — _ _ — Well Covered <br /> 12/1212001 — — — - — — — — — — — Well Covered <br /> 3/13/2002 - — — — — — — — — - Well Covered <br /> 6/18/2002 — — — — — — -- Well Covered <br /> Report Date May i2,2004 Page 14 of 19 <br />