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05 December 2008 <br />' AGE-NC Project No. 04-1153 <br /> Page 3 of 5 <br /> 3.0. FINDINGS <br /> Stratigraphy and ground water hydrogeology underlying the site were characterized from field <br /> descriptions. Hydrocarbon impact to soil and ground water was assessed by laboratory analysis. <br /> Geomaps representing site location and site map were QA/QC checked and uploaded to the State <br /> Water Board GeoTracker site; confirmation numbers are 9125271022 and 16181621730, <br /> respectively. <br /> 3.1. STRATIGRAPHY <br /> In boring B 1,located within the former UST excavation area,brown silt was encountered between <br /> 5 feet and 15 feet bsg.No petroleum hydrocarbon(HQ odors were observed in any of the three soil <br /> samples collected from boring B1. Organic vapors were not detected utilizing an OVA in any of the <br /> three soil samples collected from boring Bl. <br /> In boring B2, immediately west of the former UST area, brown, dry silt was encountered between <br /> 15 feet and 28 feet bsg;brown fine-grained,poorly graded, silty sand was encountered between 28 <br /> feet and 33 feet bsg; brown silt was encountered between 33 and 38 feet bsg; silty clay was <br /> encountered between 38 feet and 55 feet bsg. HC odor was not observed in any of the nine soil <br /> samples collected from boring B2. Organic vapors were detected utilizing an OVA in sample <br /> collected from 15 feet and 20 feet in boring B2 at concentrations of 38.6 parts per million(ppm)and <br /> 420 ppm, respectively. Organic vapors were not observed in the remaining samples collected from <br /> boring B2. <br /> Ground water was encountered approximately at 45 feet bsg in boring B2. <br /> Boring logs are provided in Appendix C; Geobores for Bland B2 were QA/QC checked and <br /> uploaded to the State Water Board GeoTracker site; confirmation numbers are 8628310263 and <br /> 1373763144, respectively. <br /> 3.2. HYDROCARBON-IMPACTED SOIL, <br /> A total of 13 soil samples from the two soil borings were analyzed for the constituents listed in <br /> Section 2.2. No target analytes were detected at or above laboratory detection limits in any of the <br /> soil samples analyzed. <br /> Analytical results of soil samples are summarized on Table 1. Laboratory reports(CTELProject No. <br /> Advanced GeoEnvironmental,Inc. <br />