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Tsl 7'2 ANALYTICAL RESULTS: GROUNDWATER MOORE PI TROLEUM 5491 F STREET, BANTA,CALIFORNIA (Ail results in parts-per-million) Monitoring Date Total Petroleum Hydrocarbons Aromatic Volatile Organics Well Collected Gasoline Diesel Motor Benzene Toluene Ethyl- =Xylenes Oil benzene MW-1 08/22/88 0.93 < --- < < < 0.0110 05/12/89 < < --- 0.1300 0.0300 0.0900 0.0900 06/27/89 0.60 < --- 0.1500 < 0.0720 0.0300 07/06/90 0.41 < --- 0,0110 < 0.0034 0.8016 02/01/91* 0.11 < --- 0.0060 < 0.0063 0.0030 04/23/91* 0.07 0.260 --- 0.0057 < < 0.0027 05/29/91 --- 6.200 --- --- --- --- 07/22/91* 0.40 1.308 --- 0.0098 0.0006 0.0029 0.0330 10/21/91 2.0 3.4 «0.5 0.140 < 0.094 0.0240 01/17/92 0.76 1.70 --- 0.021 < 0.021 0.0064 04/16/92 0.36 0.44 --- 0.026 < 0.020 0.0065 07/27/92 2.6 6.4 --- 0.038 «0.005 0.037 0.014 10/20/92 Sheen Sheen Sheen Sheen Sheen Sheen Sheen 01/22/93 FLH FLH FLH FLH FLH FLH FLH MW-2 05/12/89 < < -- 0.0005 < < 0.0020 07/06/90 0.065 < --- 0.0009 < < 0.0013 02/01/91* < < --- < < < < t 04/23/91* < < -- 0.0005 < < < 87/22/91* < 0.075 - < < < 0.0011 10/21/91 0.10 0.12 «0.5 0.0016 < < < 01/17/92 < < --- < < < < 04/16/92 < < --- < < < < 07/27/92 0.27 0.24 - 0.0006 < 0.0007 0.0007 10/20/92 0.38 0.34 --- < < 0.0024 < 01/22/93 < < --- < < < < NOTES: --- = Not sampled/not analyzed. < = Below Practical Quantitation Reporting Limits(PQL) per"Tri-Regional Board Staff Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sites"(August 10, 1990), (POL for BTEX=0.0005 ppm, TPH,as gasoline and diesel= 0.05 ppm) or as indicated in laboratory reports. << - Below indicated detection limit, = Gasoline and diesel were reported as total purgeable petroleum hydrocarbons. FLH = Floating liquid hydrocarbons The groundwater analytical results prior to February 1, 1991, are summarized from work conducted by previous consultants. Aegis Environmental,Inc. 90-099/March 9,1993