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Surface Watery:. The nearest surface.water bodis Beverly Lake,located approximately 25:0.feet . <br /> westof the.Site, and the SnohonSish.River,which is located approximately one mile northeast of the.. <br /> Site..: Also,Pigeon Creek is located approximately 150 feet east of the Site <br /> Ecological Setting: Little undeveloped land exists immediately around the Site There i� little <br /> terrestrial habitat in the immediate vicinity of the property."The.area is heavily developed.as : <br /> residential and commercial properties <br /> Geology: During site.investigations,it was found that the upper 4 feet of soil consists of dense,tan, <br /> silty overlying.very dense, gray,silty sandwith gravel(glacial till)to the:depth explored of <br /> 16.5.feet. Based on regional geology,the soils encountered are;likely weathered glacial till overlain <br /> by fill in the.upper 5 to 10.feet bgs. <br /> Ground Water:: ,Groundwater at the Site was encountered at depths rang ng from,1.6I feet below <br /> - ground surface (bgs)to 18.47 feet bgs during monitoring well sampling in August of 1959 and 2011: <br /> Ground water flow direction is toward the.north-northwest at.a gradient of approximately 0.04 to. . <br /> 0.07 feet per.foot <br /> Release and Extent of Contamination Soil A petroleum hydrocarbon in the form of TPR-O,bias <br /> the.known contaminant.present in soil at the Site.:Approximately 459:tons of: contaminated`soil were .. . <br /> excavated and transported off.-site for disposal,.but additional contaminated soil abov4MTCA <br /> Method A Cleanup Levels was leftin place:. Contaminated soils were observed in.contact _ <br /> groundwater prior to excavation, during times of high groundwater elevation. Impacted soilwas <br /> identified between 5 and 14 feet bgs.. <br /> Release and Extent of Contamination. Ground.water: A petroleum hydrocarbon in the form of <br /> TPH 0;.is the known contaminants present in groundwater at the Site 'Eight ground water <br /> monitoring wells were installed and sampled for diesel and:oil-range petroleum hydrocarbons No <br /> wells showed detections for diesel. However;oil-range petroleum hydrocarbons were found in <br /> - monitoring"well MWt-l,-aconcentrations exceeding MTCAMethod A cleanup levels..--Th:e:lateral <br /> of'1'PI-1-0 n — <br /> extent groundwater has been defined;bymonitoririg wells MW-2 throughW-8.'. <br /> • Impacted groundwater is limited to the area around monitoring well MW 1 <br /> a <br />