ARCHIVED REPORTS_XR0008093 CASE 1

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Table 1 Groundwater Monitoring and A1la"cal Data BP Oil No 11194 2375 Tracy Boulevard,Tracy,California Well Date Well Depth to Product 3roundwatei TPHg B T E X IMBE DO Number Sampled Elevation Water Thickness Elevation (p9IL) (u9rL) (pg/L) (-9l1.) (,ug/L) (P91L) (mg7L) (Feet) (Feet) (Feet) (Feet) — - --_ — < < c < < "7<-T-07-- AMW 6 6!711994 26 68 623 20 45 ND<50 ND<O 5 N0<0 5 ND<0 5 ND<O 5 - 34 (Cont d) 9/13/1994 2668 639 — 2029 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<0 5 ND<5 0 82 1/10/1995 2668 540 2128 ND<50 10 ND<O 5 30 20 6 4 3/23/1995 2668 550 2118 ND<50 ND<O 50 ND<0 50 ND<0 50 ND<l 0 84 10!4/1995 2668 6 1 B - 2050 ND<50 ND<0 50 ND<0 50 ND<O 50 ND<1 0 ND<5 0 66 1/4/1996 2668 568 — 2100 ND<50 ND<O 50 ND<0 50 ND<0 50 ND<1 0 68 1 4 3/29/1996 2668 546 21 22 60 ND<0 5 ND<l ND<1 ND<1 26 35 711!1996 2668 601 - 2067 ND<50 ND<O 5 ND 10/15/1996 2668 621 -- 2047 ND<50 ND<0 5 ND<l 0 ND<l 0 ND<l 0 ND<10 56 4/16/1997 2668 497 2181 - - - — — 10/15/1997 2668 B 60 18 08 - - - 3/17/1998 26 68 8 13 — t B 55 — — - — - 1/6/1999 2668 511 21,57 - - - — 9/13/1999 26 6B 523 -- 2145 - - - - 111912wu 1b bt3 4/B -- 11 90 - 4/12/2000 2668 501 2167 - — - - — 7/22/2000 2668 522 — 21 46 - — — — 10/26/2000 2668 408 — 2260 - - - - - — 1/17/2001 2668 541 2127 - - - - — 4/12/2001 2668 502 2166 — - - — 5/23/2001 2668 486 - 21 82 710 ND<0 5 ND<O 5 151 ND<l 5 840 — 7/31/2001 2668 463 2205 140 ND<O 5 1 44 ND<0 5 176 113 — 10/30/2001 26 68 478 -- 2190 ND<250 ND<2 5 ND<2 5 ND<2 5 ND<7 5 ND<2 5 — 1/29/2002 26 6B 456 2212 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<1 0 431 4/30/2002 2668 471 21 97 ND<250 ND<2 5 ND<2 5 ND<2 5 ND<5 0 763 — 7/30/2002 P 2668 472 -- 21 96 ND<500 ND<5 ND<5 ND<5 ND<10 465 -- 10l31/2002 P 2668 440 - 2228 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<O 5 19 — 1/30/2003 P 2668 466 2202 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<O 5 41 — 4/30/2003 P 2668 476 -- 21 92 <50 <0 5 <0 5 <0 5 <0 5 23 — 7/30/2003 P 2668 520 21 48 260 R 16 <2 5 <2 5 <25 16 10/29/2003 P 2668 449 — 2219 <50 <0 5 <0 5 <0 5 <0 5 27 -- AM4V 6 3/10/1993 ND<50 ND<0 5 ND<0 5 NDc0 5 ND<0 5 6/16/1993 - — 1\10<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 10/22/1993 — ND<50 ND<O 5 ND<0 5 ND<O 5 ND<0 5 ND<5 0 — 1/24/1994 — ND<50 ND<O 5 ND<0 5 ND<O 5 ND<0 5 — 6,711994 - ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 --- - 9/13/1994 - - ND<50 ND<O 5 ND<0 5 ND<O 5 ND<O 5 - - 1/10/1995 - — ND<50 ND<0 5 ND<O 5 ND<O 5 ND<1 — 3/23/1995 - — — ND<50 ND<O 50 ND<0 50 ND<0 50 ND<1 0 — — 10/4/1995 - ND<50 ND<0 50 ND<O 50 ND<O 50 ND<t 0 ND<5 0 1/4/1996 - ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 ND<5 0 — 3/29/1996 » - — »- ND<50 ND<0 5 ND<l ND<1 ND<l ND<10 - 7/111996 — — — ND<50 ND<05 ND<1 ND<1 ND<1 ND<10 Notes -- Not anatyzed/applrcable/measurable B Benzene T Toluene E Ethylbenzene X Total xylenes DO Dissolved oxygen mg/L Milligrams per liter M1B6 Melhyl tart butyl ether TPHg Total petroleum hydrocarbons as gasoline(reported as gasoline range organics) pg/L Micrograms per liter Data Qualifier Definitions U The analyte was analyzed for but was not detected above the sample reporting limit J The analyte was positively identified the associated numerical value is the approximate concentration of the analyte m the sample N The analysis indicates the presence of an analyte for which there is presumptive evidence to make a"tentative identification" NJ The analysis indicates the presence of an analyte that has been"tentatively identified'"and the associated numerical value represents its approxin concent rat ion UJ The analyte was not detected above the reported sample reporting limit However the reported reporting limit is approximate and may or may not represeril the actual limit of quantrtation necessary to accurately and precisely measure the analyte in the sample R The sample results are rejected due to ideritdicalIon or other analytical issues ND Not detected above reported detection limit k 1W process�J5 BP ARCO111 1941Quartertyl4 QTR 03/11194 GW MR 4Q03 Page l l of 11