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• <br /> TABLE 1- SUMMARY OF RESULTS OF GROUNDWATER MONITORING AND SAMPLING <br /> BP OIL COMPANY SERVICE STATION NO 11194 <br /> 2375 TRACY BOULEVARD,TRACY,CALIFORNIA <br /> ALISTO PROJECT NO 10-085 <br /> WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G B T E X LAB <br /> ID SAMPLING! ELEVATION(a) WATER THICKNESS ELEVATION (b) (ppb) (ppb) (ppb) (Ppb) (Ppb) <br /> MONITORING (Feet) (Feet) (Feet) (Feet) <br /> AMW-4 98/10/90 2536 483 000 2053 ND<50 06 07 29 42 SLIP <br /> AMW-4 08/27/90 2536 463 000 2053 — — -'-' — ---- <br /> AMW-4 11/02/90 2536 489 000 2047 — — — <br /> AMW-4 11/05190 2536 488 000 20 48 ND<50 03. ND<0 3 ND<O 3 NDA 3 SUP <br /> AMW-4 02125!91 2536 408 000 2128 ND<50 ND<0 3 ND<0 3 ND<O 3 ND<0 3 SUP <br /> AMW-4 06/27/91 2536 501 000 20 35 ND<50 ND<O 5 NDA 5 ND<O 5 ND<0 5 CHR <br /> AMW-4 09/25/91 2536 545 000 1991 ND<30 ND<O 30 NDA 30 NDN 30 NDN 30 SEQ <br /> AMW-4 12/10191 2536 479 000 2057 ND<30 NDN 30 ND<0 30 ND<O 30 NDA 30 SEQ <br /> AMWA 03,x25191 2536 426 000 2110 N131<30 ND<0 30 ND<0 30 ND<0 30 ND<0 30 SEQ <br /> AMW-4 06/25/92 2536 616 000 1920 ND<30 NDN 30 Niko 30 ND<O 30 ND<0 30 SEQ <br /> AMW-4 12146192 2536 474 000 2062 ND<50 ND<O 5 ND<0 5 ND<0 5 NDN 5 ANA <br /> AMW-4 03110M 2536 428 000 2108 ND<50 NDN 5 NDN 5 ND<O 5 ND<O 5 PACE <br /> AMW 5 12/10/91 2619 595 000 2024 ND<30 NDN 30 ND<o 30 NDN 30 NDA 30 SEQ <br /> AMW-5 03/25/32 2619 539 000 2080 72 48 NDN 30 NDA 30 ND4 30 SEQ <br /> AMW 5 06/25/92 2619 727 000 1892 ND40 ND<0 30 NDN 30 ND<0 30 NDA 30 SEQ <br /> AMW 5 12/08/92 2619 578 000 2041 56 (c) NDN 5 NDA 5 NDN 5 NDN 5 ANA <br /> AMW 5 03i0193 2619 550 000 2069 ND<50 32 06 20 51 PACE <br /> AMW-0 12!10191 2633 585 000 2048 ND<W NDA 30 ND<0 30 NDN 30 NDA 30 SEQ <br /> AMW-0 03125/92 2633 486 000 2147 97 43 ND<0 30 74 61 SEQ <br /> AMW-6 06/25192 2633 700 000 1933 ND<30 NDN 30 ND<O 30 ND<O 30 ND<O 30 SEQ <br /> AMW-6 12/08192 2633 582 000 2051 ND<50 NDA 5 ND<0 5 ND<O 5 ND<O 5 ANA <br /> AMW-6 03110M 2633 547 000 2086 ND<50 ND<0 5 NDN 5 NDN 5 NDA 5 PACE <br /> OC-2 (f) 12/08/92 _ - _ ND<50 ND<O 5 NDA 5 ND<0 5 NDA 5 ANA <br /> QC-2 (f) 0310/93 ND<50 NDN 5 NDA 5 NDN 5 NDN 5 PACE <br /> ABBREVIATIONS NOTES <br /> TPH-G Total petroleum hydrocarbons as gasoline (a) Casing elevations surveyed to the most southwesterly anchor bolt of the signal standard <br /> B Benzene located at the most southerly return of the southwest comer of the intersection of <br /> T Toluene Grant Line Road and Tracy Boulevard(elevation 26 13) <br /> E Ethylbenzene <br /> X Total xylenes (b) Groundwater elevation adjusted assuming a specific gravity of 0 75 for free product. <br /> Not analyzed/applicable <br /> NO Not detected above reported detection tirnrts (c) Concentrations reported as gasoline are primarily due to <br /> SUP Superior Ana{ytical Laboratories the presence of a discrete hydrocarbon peak not indicative of gasoline <br /> CHR Chromalab,Inc <br /> SEQ Sequoia Anelytical (d) Recovery well not sampled <br /> ANA Anametnx,Inc <br /> PACE Pace,Inc (e) Blind dupicata of sample collected from MW-8 <br /> (f) Travel blank <br /> 12-May 93 PAGE 6 OF 6 <br />