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<br />Former Lexington School <br />STS Project #95 192- X F <br /> <br />screening was performed in general conformance with the Minnesota Pollution Control <br />Agency's (MPCA) "Jar Head Space Analytical Screening Procedure". <br /> <br />One soil sample was collected and submitted for chemical analysis. The sample, identified <br />as S-I, was analyzed for benzene, ethylbenzene, toluene, xylene (BETX) and total hydro- <br />carbons (TPH) as fuel oil. The sample was collected at a depth approximately 2 feet below <br />the center of the underground storage tank location. The soil sample was placed in glass <br />containers provided by the laboratory. Samples were placed in a cooler with ice and trans- <br />ported to Interpoll Laboratories in Circle Pines, Minnesota. An STS sample identification <br />field chain of custody record accompanied the sample to the laboratory. <br /> <br />Soil in the vicinity of the underground storage tank was a sandy clay fill generally cor- <br />responding to the Unified Soil Classification CL. No groundwater was encountered in the <br />excavation. HNU meter readings were taken at 3, 5 and 6 foot depths in the excavation. No <br />HNU meter deflections were noted. <br /> <br />Chemical Test Results <br /> <br />Soil sample S-I obtained from 2 feet below the bottom of the tank showed no BETX or TPH as <br />fuel oil above detection limits. Table 1 summarizes the results of the soil chemical <br />analysis. Copies copy of the laboratory results and chain of custody form are included in <br />the Appendix. <br /> <br />- 4 - <br />