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Phase I Ena�ironmental Site Assessment Septzmber 2, 2009 <br /> 9.0 REFERENCES <br /> For the purposes of this Phase I ESA, records were reviewed that were obtained from the following <br /> sources: <br /> • Environmental Data Resources, Inc (EDR) database report and lien report. <br /> • Historic Information Gatherers, Inc. (HIG) Sanborn fire insurance maps, historic city directory <br /> abstracts, historical aerial photographs, and topographic maps. <br /> • Minnesota Department of Health, County Well Index. <br /> • Minnesota Geological Survey, Universiry of Minnesota, Geologic Atlas Hennepin Counry, <br /> Counry Atlas Series, Atlas C-4> Plate 2 of 9, Bedrock Geology, compiled by Olsen and <br /> Bloomgren, 1989. <br /> • Minnesota Geolo�ical Survey, Universiry of Minnesota, Geolo�ic Atlas Hennepin County, <br /> County Atlas Series, Atlas C-4, Plate 3 of 9, Surficial Geology, compiled by Meyer and Hobbs, <br /> 1989. <br /> • Minnesota Pollution Control Agency website and internal files. <br /> • City of Orono correspondence letters, permits and photographs. <br /> Carl�son Professional Sera>ices, Inc. Page 19 <br />