ARCHIVED REPORTS_XR0008639 CASE 1

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TABLE 2-SUMMARY OF RESULTS OF GROUNDWATER TREATMENT SYSTEM OPERATION BP OIL COMPANY SERVICE STATION NO 11194 2375 TRACY BOULEVARD TRACY CALIFORNIA . ALISTO PROJECT NO 10-085 '— Sample Date TPH-G TPH-0 B T E X Fish pH EC DO TEMP LAB ID (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) Toxicity (umhos/cm) Degree F LC-50 Survival) E-1 05713/92 53 ND<50 ND<0 30 NO<0 30 NO<0 30 NO<0 30 — 685 1310 — --- SEQ E-1 05/18192 NO NO NO ND NO NO — 690 1287 — — SEQ E-1 05127/92 NO NO NO ND NO ND 100 702 1255 — — SEQ E-1 06104/92 NO NO NO ND NO ND — — — — — SEQ E-1 0&11/92 NO NO NO NO ND ND — — -- - — SEQ E-1 06+17192 NO NO ND NO NO N6 — -- — — — SEQ E-1 06/25192 ND NO NO 068 NO NO — — — — — SEQ E 1 07/24/92 NO NO NO NO ND ND — — — — — SEQ E-1 08!24/92 - — — — — — — 775 2300 — — SEQ E 1 09/24/92 — — — — - — -- 767 1960 — — SEQ E-1 16122/92 ND<50 ND<50 ND<05 ND<05 NO<05 ND<O5 — — — — — ANA E 1 11/19/92 NO<50 NO<50 ND<O 5 ND<0 5 ND<O 5 ND<O5 — — — — — ANA E-1 12/17/92 ND<50 ND<50 ND<05 ND<05 NO<05 ND<O5 — - — — — ANA E-1 01/18193 ND<50 ND<50 ND<0 5 NO<0 5 NO<0 5 NMS — — — — — PACE E-1 01/24/93 — — — — — — 95 74 2000 -- - PACE E-1 02/11/93 ND<50 ND<50 ND<O 5 ND<O 5 NO<0 5 ND<O 5 -- 69 2000 — — PACE E-1 03/24/93 ND<50 ND<50 ND<0 5 ND<0 5 NO<0 5 ND<05 — — — — PACE E-1 04/12/93 ND<50 ND<50 NO<O5 NO<05 NO<05 ND<10 — 72 2100 — — PACE E-1 05118/93 ND<50 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<0 5 — 73 2000 44 79 PACE E-1 06115/93 ND<50 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<0 5 — 71 2000 16 79 PACE E-1 07/21/93 ND<50 ND<50 NIM 5 ND<0 5 ND<O 5 NO<0 5 100 72 2200 48 79 PACE E-1 08118/93 ND<50 ND<50 NIM 5 ND<O 5 ND<O 5 NO<0 5 — 73 2200 33 78 PACE E-1 09/22/93 ND<50 ND<50 ND<05 ND<O 5 ND<O 5 ND<O 5 — 70 2100 31 79 PACE E-1 14/21/93 N1<50 ND<50 ND<05 ND<05 ND<05 ND<05 100 67 2200 28 66 PACE E 1 11/19/93 ND<50 ND<50 ND<O 5 NO<0 5 ND<0 5 ND<O 5 — 70 2100 — --- PACE E 1 12/15/93 ND<50 ND<50 NO<O5 ND<05 NO<05 ND<O5 — 69 2400 25 57 PACE E 1 01124'94 ND<50 ND<50 ND<O5 NO<O5 NO<05 ND<O5 — 70 2300 42 68 PACE E 1 02/15/94 ND<50 ND<50 N0<0 5 NO<0 5 NO<0 5 ND<0 5 &6 2300 32 60 PACE 50 E-1 03/14/94 ND< NO<50 ND<05 ND<05 ND<O5 ND<05 68 2200 18 72 PACE — E-1 04/15/94 ND<50 NO<50 ND<O5 ND<05 ND<O5 ND<05 73 2600 77 PACE E-1 05113(94 ND<50 ND<50 ND<05 ND<05 ND<O5 ND<05 — 72 1711 2.1 82 PACE E-1 06/20/94 ND<50 NO<50 ND<O5 ND<O5 ND<05 ND<05 100 65 2640 2.7 86 PACE E-1 0711S/94 ND<50 330 (a) ND<O5 ND<O5 NO<O5 ND<05 — 65 2640 2.7 86 PACE E-1 08/23/94 NDc50 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<05 — 67 3110 53 724 PACE E-1 OW22!94 NO<50 ND<50 ND<05 ND<05 ND<05 ND<05 — 69 2750 42 28 PACE E-1 10/19/94 NO<100 ND<-% ND<O 5 ND<1 0 NO<1 0 ND<20 — 65 2820 SA 60 GTE- E-1 11/16/94 ND<10 NO<50 N04 3 ND<O 3 ND<0 3 ND<05 — 72 2600 5.4 50 GTEL E-1 12!15?94 ND<10 NO<50 NO<0 3 ND<0 3 NM 3 ND<05 — 72 2360 &7 67 GTEL ABBREVIATIONS NOTE. TPI+G Total petroleum hydrocarbons as gasoline (a) Sample does not match the TPH-D Fatal petroleum hydrocarbons as diesel standard diesel pattern B Benzene T Toluene E Ettylbenzene X Total xylenes ppb Parts per billion ND Not detected above reported detection Ilmrt — Not analyzed/availabie SEQ Sequoia Analytical Laboratory ANA Anametruc,Inc PACE Pace Inc. GTEL GTEL Environmental Laboratories Inc.