Laserfiche WebLink
p W 1i cy <br /> ty�[ j11 E <br /> ry <br /> ' Site Background Information West Clay Properties <br /> ,,Page 6 of 6 <br /> t <br /> CPT02/137-141 BTEX constituents were detected at concentrations as high as 186 µg/1 <br />' benzene(CPT01/93 5-97 5), 2,300 µg/1 toluene(CPT02/137-141), 1,200 µg/l ethylbenzene <br /> (CPT02/137-141) and 6,600 µg11 total xylenes (CPT02/137-141) <br /> • HU-5 TPH-g and TPH-d were detected in the ground water sample CPT03/176-180 <br />' collected from HU-5 at concentrations of 5,400 µg/1 and 3,000 gg/l, respectively BTEX <br /> constituents were detected at concentrations of 23 µg11 (benzene), 330 µg11 (toluene), 200 <br /> gg/l (ethylbenzene) and 1,180 µg/l (total xylenes) <br /> Former UST Cluster <br /> Analytes of concern were not detected in ground water samples collected from the soil borings <br /> advanced,near the former UST cluster area <br /> i <br /> IMPLICATIONS FROM VERTICAL ASSESSMENT <br />' Grab ground water les collected from soil borings advanced near the former UST No 3 location <br /> f �' samples <br /> contained detectable concentrations of TPH-g, TPH-d and BTEX constituents at depths as great as <br /> 10 180 feet bsg Due to refusal, additional samples could not be collected from greater depths In <br /> addition, detectible concentrations of target analytes were reported by the laboratory in grab ground <br />' water samples collected from soil borings advanced down-gradient of the former UST No 3 location <br /> at depths ranging from 74 to 78 feet bsg and 178 to 182 feet bsg Neither the vertical nor the deep 4 <br /> lateral extent of petroleum hydrocarbon-impacted ground water has been defined around the former ^' <br /> UST No 3 location <br /> Target,analytes were not detected above laboratory reporting limits in grab ground water samples <br /> collected from the former UST cluster area to depths as great as 182 feet bsg In addition, target <br />' analytes were not detected above laboratory reporting limits in grab ground water samples collected <br /> from boring CHB-01; located dawn-gradient from the former UST cluster location The vertical ' <br /> extent of impacted ground water appears to be defined at the UST cluster location,the lateral extent <br /> is not defined to the north and southwest , <br /> f <br /> i Y v <br /> t �5 <br /> k <br /> t � <br /> r + <br /> ti <br /> j <br />''0 1 <br /> j <br /> 'I 'Advanced GeoEnvironmental,Inc <br /> s <br /> s <br />