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ofI NIcf-�-[IIVR <br /> Mr. Charles Leubner <br /> 12 December 1990 <br /> I Page 4 <br /> Table 2, while the analysis for the 6,600 gallon tank is presented in Table 3. The 10,000 <br /> gallon tank site scored 37 points, and the 6,600 gallon tank site scored 36 points, due to the <br /> proximity of a monitoring well to the site. Based upon these evaluations, the reported <br /> maximum TPH concentrations of 38 ppm from the 10,000 gallon tank excavation and 84 <br /> ppm for the 6,600 gallon tank excavation are well below the recommended maximum <br /> allowable TPH as diesel of 100 ppm that may be left in the soil without degrading <br /> groundwater quality. On the basis of these results no further excavation of soil below the <br /> tanks appears warranted <br /> If you have any questions regarding these results, please do not hesitate to call us. <br /> Sincerely yours, <br /> HELMICK & LERNER, INC. <br /> I <br /> John S. Russell <br /> IProject Geologist <br /> Noel M. Lerner <br /> Project Manager <br /> C.E. #39708 <br /> enclosures: Figures 1, 2, and 3 <br /> Tables 1, 2 and 3 <br /> I Laboratory Analysis Reports <br /> Chain-of-Custody Forms <br /> IWP FRAHKLET 001 <br />