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i <br /> Historical Background - Chet's Automotive <br /> Page 3 of 3 <br /> STRATIGRAPHY <br /> Based on soil boring data,the subsurface soil consisted of tan,brown,or gray(apParentl depending <br /> g <br /> on hydrocarbon impact) silt encountered from a depth of approximately 5 feet to 35 feet bsg The <br /> coarsest material was silty sand, collected at a depth of 25 feet bsg in boring MW-2 Silty sand was <br /> generally encountered to a depth approximately of 40 feet to 45 feet bsg Generally,poorly-graded <br /> sand and silty sand was encountered between 60 feet and 75 feet bsg in boring MW-5 <br /> M <br /> 1 <br /> 1 <br />� 1 <br /> 1 <br /> 1 <br /> 1 <br /> i <br /> Advanced GeoEnwonmental,Inc <br />