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' <br /> ETS ENVIRONMENTAL PROJECT 301 <br /> / <br /> 3. 0 FINDINGS ! <br /> L ^ <br /> Based on field observations and laboratory data ETS <br /> LEnvironmental has made the following findings: <br /> 1. Soil samples from boring 7 indicate that no gasoline <br /> i <br /> or diesel leakage has occurred in its proximity. <br /> \ � <br /> �� <br /> ~- 2. No hydrocarbon odor was detected at any time during | <br /> the drilling operation and was confirmed by both a � <br /> Draeger tube analysis in the field and the ' <br /> L laboratory data contained in Appendix B. ` <br /> 3. Groundwater is in excess of 50 feet in depth bel <br /> ow> <br /> Lthe site. ' <br /> � <br /> 4. Lithologic characteristics of the subsurface ' <br /> material would tend to enhance contaminant migration / <br /> L both vertically and laterally to a depth ofJ <br /> approximately 30 or 35 feet. � However, no <br /> � contaminants are found within <br /> � 3 feet laterally from � <br /> L boring 6. <br /> L 4. 0 CONCLUSIONS <br /> ' <br /> Based upon field work conducted on the site and review <br /> of the laboratory data, ETS has made the following <br /> L conclusions; <br /> 1. The underground diesel tank and both underground <br /> L gasoline tanks are believed to be sound at this <br /> time. Evidence for this statement comes from <br /> laboratory data, a precision tank test conducted <br /> during the fall/winter of 1987, and daily inventory <br /> L monitoring of the tanks by sticking. <br /> 2. A limited amount of very heavily weathered gasoline <br /> L is present near the surface in the vicinity of boring number 6 below reportable limits. <br /> L <br /> 3. Boring 7 is located as close to tank "C" as <br /> practical, drilled on a convergent line with boring <br /> 6, and samples from all intervals returned non- <br /> detect values. <br /> L <br /> 4. Depth to groundwater in the area is in excess of 50 <br />/ feet. At this time, given the most current lab <br />� | results, ETS does not feel that the groundwater is <br />' "� threatened by contamination from this site. <br />^ L <br /> i - <br /> � <br />