|
i
<br /> characterized by low to moderately low pore pressure in the clay and silt, generally moderate
<br /> pressures for the clayey silt to silty clay,and variable pore pressure, from moderately low to high, in
<br /> the stiff, fine-grained soil Hydraulic conductivities based on SBT should range between 1 x 10-10 to
<br /> 1 x 10'm/s for clay to silt, and between 1 x 10' to 1 x 10'm/s for stiff, fine-grained soil
<br /> ANALYTICAL RESULTS
<br /> A total of seventeen `grab' ground water samples and two soil samples were collected from on-and
<br /> off-site and submitted for laboratory analysis The concentrations of TPH-g,TPH-d and benzene were
<br /> non-detect in the soil sample collected from CPT1 at 55 feet bsg,however,ethylbenzene and xylene
<br /> and were detected at maximum concentrations of 0 025 mg/kg
<br /> TPH-g was detect in soil sample collected from CPT1 at 78 feet bsg at a concentration of
<br /> 4,800 mg/kg, in addition, toluene, ethylbenzene and xylene and were detected at maximum
<br /> Iconcentrations of 350 mg/kg TPH-d and benzene were not detected in the sample from 78 feet bsg
<br /> HUI One sample (CPT5-60) was collected from off-site CPT5, target analytes were not detected
<br /> in this sample
<br /> I HU2 One sample(CPT3-60)was collected from westernmost boring CPT3,target analytes were not
<br /> detected in this sample
<br /> HU4 Samples CPT 1-100,CPT2-97,CPT3-108,CPT4-105 and CPT5-108 were collected from this
<br /> HU !PH-gg was detected at concentrations of 1,5d210
<br /> µg/l in CPT2-97 The BTEX compounds toluene, ethylbenzene and xylenes were detected at
<br /> maximum concentrations of 14 µg/1 (CPT2-97), 13 µg/1 (CPT 1-100) and 80 µg/1 (CPT I-100),
<br /> respectively No other analytes were detected in the samples analyzed
<br /> HU5 One sample(CPT3-124) was collected from westernmost boring CPT3, target analytes were
<br /> not detected in this sample
<br /> HU6 Samples CPT 1-124, CPT2-124 and CPT4-124 were collected from this HU TPH-g was
<br /> I detected in samples CPT1-124 and CPT2-124 at a maximum concentration of 14,000 µg/1
<br /> (CPT2-124),in addition,TPH-d was detected in sample CPT2-124 at 5,200µg/1 BTEX compounds
<br /> were detected at maximum concentrations of 55 µg/1 benzene, 840 µg/1 toluene, 460 µg/1
<br /> ethylbenzene and 2,000µg/1 xylenes,in sample CPT2-124 In addition,the fuel additive 1,2-DCA was
<br /> detected in sample CPT 1-124 at 2 1 µg/1 No other analytes were detected in the samples analyzed
<br /> HU7 One sample(CPT3-150)was collected from westernmost boring CPT3, target analytes were
<br /> Inot detected in this sample
<br /> HUS Samples CPT1-150, CPT2-150, CPT4-145 and CPT5-150 were collected from this HU
<br /> TPH-g was detected in samples CPT 1-150, CPT2-150 and CPT5-150 at a maximum concentration
<br /> of 11,000 gg/1 (CPT2-150), in addition, TPH was detected m samples CPT1-150 and CPT2-150
<br /> • at a maximum concentration of 5,300 µ 1 (CPT1-150) BTEX compounds were detected in
<br /> I CPT1-150, CPT2-150 and CPT5-150 at maximum concentrations of 35 µg/1 benzene, 590 µg/1
<br /> toluene, 360 µg/1 ethylbenzene and 1,700 µg/1 xylenes, in sample CPT2-150 In addition, the fuel
<br /> additive 1,2-DCA was detected in sample CPT2-150 at 2 8 µg/1 No other analytes were detected in
<br /> Ithe samples analyzed
<br />
|