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Richard Fimmel • • <br /> lv- Cherokee lane Burger King <br /> Laboratory analysis of the ground water grab sample <br /> ' collected from boring EB-2 detected 64 parts per <br /> billion (ppb) of a diesel range petroleum hydrocarbon. <br /> The concentrations of <br /> Petroleum hydrocarbons <br /> detected sporadically in several of the soil samples <br /> collected indicate that previous on-site activities have <br /> impacted the project site. However, it appears that the <br /> ' impacted soil is limited in extent, and, in our opinion, <br /> does not appear to represent a significant threat to <br /> human health or the environment. In addition, the <br /> highest concentration of petroleum hydrocarbons <br /> ' detected (460 ppm TRPH in boring EB-2) was present at <br /> a depth of 2.5 feet and ground water was encountered <br /> ' at an approximate depth of >j feet. The pockets of <br /> impacted soil therefore do not appear to pose a <br /> significant threat to ground water quality, in our <br /> opinion. <br /> ' The source of the low level of diesel range <br /> hydrocarbons in the ground water is unclear; it may be <br />' attributable to an on- or off-site source, or the turbid <br /> nature of the sample. The collection of turbid samples <br /> is inherent to the grab sampling method, as the <br /> borings are not developed to remove sediment, as is <br /> the case with monitoring well sampling. The diesel- <br /> ranged compound quantified, in our opinion, is not <br /> present at a concentration which would represent a <br />' significant threat to human health or the environment. <br />' Consideration should be given to contacting an <br /> environmental attorney regarding your obligation to <br /> report these findings to the appropriate regulatory <br /> agency. <br /> EmnanmanW S/X 1/"\S <br /> Page 4 <br />