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5608 N PERSHING AVE <br /> PAGE 2 <br /> approximately 34' BGS. Depth to water is approximately 27'-28' BGS. <br /> 02-04-88 Monitoring wells MW#1 through MW#7 sampled this date. Depth to groundwater was <br /> approximately 27' BGS. Flow direction was to the north northeast. <br /> MW#1 showed TPH as gasoline and BTEX at less than 0.001 ppb,21 ppb, 1.9 ppb,less than <br /> 0.5 ppb and 13 ppb, respectively. <br /> MW#4 showed TPH as gasoline and BTEX at less than 1000 ppb, 1.8 ppb,0.6 ppb,less than <br /> 0.5 ppb and 0.5 ppb, respectively. <br /> All other wells showed nondetect at detection limits of 1000 ppb, and 0.5 ppb for TPH as <br /> gasoline and BTEX, respectively. <br /> 06-28-88 Monitoring wells MW#1, MW#2, and MW#3 sampled this date. Depth to water is <br /> approximately 28' BGS. Flow direction was to the north northeast. <br /> All wells show nondetect for TPH as gasoline and BTEX at detection limits of 1000 ppb,and <br /> 0.5 ppb, respectively. <br /> 09-01-88 PHS/EHD approves tank removal plans this date. <br /> 09-07-88 The four tanks were removed this date. <br /> FUEL TANK PIT <br /> Two soil samples collected from under each of the three product tanks from approx. 15'BGS. <br /> The soil type was noted as clay/loam and also noted to be discolored and odorous. Extensive <br /> contamination was noted at Tank #1 located southernmost near the southwest corner (the <br /> area where the piping connects to the tanks and leaves westerly towards the dispenser islands. <br /> WASTE OIL TANK PTT <br /> One soil sample was obtained from the waste oil tank at approx. 9.5' BGS. The soil type is <br /> noted as clay/loam and heavy contamination and petroleum odors are noted. <br /> PIPING <br /> Five soil samples are obtained from the piping trenches at approx. 5' BGS. Soil type was <br /> noted as clay/loam and no indication was made as to the soil condition. <br /> 09-12-88 PHS/EHD receives soil results from the tank removals. <br /> FUEL TANK PIT <br /> The 5,000 gallon super unleaded tank,located northernmost in the tank pit, showed TPH as <br /> gasoline at 1.8 ppm and was nondetect for BTEX at detection limits of 0.05 ppm, 0.1 ppm, <br /> 0.1 ppm, 0.1 Qpm and 0.1 ppm, respectively, for both the east and west soil samples. <br /> The 10,000 gallon unleaded tank, located in the middle of the tank pit area, showed TPH as <br /> gasoline at 4.0 ppm and BTEX at less than 0.05 ppm, 0.14 ppm, less than 0.1,ppm, and 0.26 <br /> ppm,respectively,for the western sample and showed TPH as gasoline and BTEX at 2.6 ppm, <br /> less than 0.05 ppm, 0.1 ppm, 0.1 ppm,and 0.1 ppm, respectively, for the eastern sample. <br />