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4 <br /> 3 0 SOIL VAPOR SURVEY RESULTS <br /> The soil vapor survey was conducted in August of 1992 by Environmental Control <br /> Associates and was supervised by a Canonie site engineer A total of 13 soil vapor <br /> survey points were sampled, depending on soil conditions, either one or two samples <br /> were collected at each location it should be noted that a hardpan layer encountered <br /> beneath the surface limited the sampling depths The Soil Vapor Survey Report is <br /> contained in Appendix B, and the locations of the sampling points are shown on <br /> Figure 3 of the appendix None of the samples showed detectable concentrations of <br /> TPH-G These results indicate that potential source areas could be found at depths <br /> greater than the hardpan layer Proposed boring and weli locations were based on this <br /> information <br /> ' W 191 6341REP0RTSISFTE ASSILOCKEFORMLOCKEFORD RPT APO 26 19931 CanOntieL n Y iro 11 1 iej ltal <br />