Laserfiche WebLink
Site Background Information West Clay Properties <br /> Page 6 of 6 <br /> 1 <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 pg/l and 3,000 pg/l, respectively BTEX <br /> constituents were detected at concentrations of 23 pg/1 (benzene), 330 gg/1 (toluene), 200 <br /> pg/l (ethylbenzene) and 1,180 µg/l (total xylenes) <br /> 1 <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 /> IMPLICATIONS FROM VERTICAL ASSESSMENT <br />' Grab ground water samples collected from soil borings advanced near the former UST No 3 <br /> location contained detectable concentrations of TPH-g, TPH-d and BTEX constituents at depths as <br />' great as 180 feet bsg Due to refusal, additional samples could not be collected from greater depths <br /> In addition, detectible concentrations of target analytes were reported by the laboratory in grab <br /> ground water samples collected from soil borings advanced down-gradient of the former UST No <br /> 3 location at depths ranging from 74 to 78 feet bsg and 178 to 182 feet bsg Neither the vertical nor <br /> the deep lateral extent of petroleum hydrocarbon-impacted ground water has been defined around <br /> the former 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 down-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 />' Advanced GeoEnviron mental,Inc <br />