4.4 EAW Attachment - Laserfiche WebLink

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4.0 RECORDS REVIEW The purpose of the records review was to obtain and review records that may assist in identifying RECs in connection with the Property.Some of the records reviewed pertain to the Property as well as to properties within an additional ASTM specified search distance.These records were reviewed in an effort to evaluate the potential for migrating hazardous substances or petroleum products to impact the Property.Unless otherwise stated, the approximate minimum search distances used were specified in ASTM Standard E 1527-21. 4.1 Physical Setting Source(s) 4.1.1 Regional Geologic and Hydrogeologic Setting The following information has been summarized from geologic information provided in the University of Minnesota Geological Survey Sherburne County Atlas Series, Surficial Geology, compiled by Barbara Lusardi and Roberta Adams, 2013.Surficial geology at the Property is classified as sand, sandy loam to silt loam. It is described as generally coarse-grained sediment (sand and gravel) in the channels, and finer-grained sediment (fine-grained sand and silt) on floodplains. The following information has been summarized from geologic information provided in the University of Minnesota Geological Survey Sherburne County Atlas Series, Bedrock Geology, compiled by John Mossler and V.W. Chandler, 2013 and the USGS Elk River, MN 7.5 minute topographic quadrangle.Bedrock beneath the Property is categorized as Tunnel City Group, formerly the Franconia Formation, and is divided into two formations: the upper Mazomanie Formation and the lower Lone Rock Formation.The uppermost formation is dominantly white to yellowish-gray, fine to medium grained, cross-stratified, generally friable, quartz sandstone.The Lone Rock Formation is described as pale yellowish-green, very fine to fine-grained, glauconitic, feldspathic sandstone with thin, greenish-gray shale partings. It is presumed that regional groundwater flow is to the west towards the Mississippi River in this area, and is based on the assumption that groundwater flow closely parallels ground surface topography and/or follows natural drainage.This does not take into account any historic cut and fill activity, shallow bedrock or unobserved artificial conditions.The anticipated depth to groundwater, based on the Quaternary Hydrogeology Water-Table System Map in the County Atlas Series for Sherburne County, is 10 - 50 feet below grade. 4.1.2 Site Topography Information about the Site topography has been obtained and summarized from the USGS maps and observations made during the site reconnaissance.The approximate elevation of the Property is 894 feet national geodetic vertical datum (NGVD).The topography of the Property itself is fairly level. 4.2 Standard Environmental Record Sources At the request of Historical Information Gatherers, Inc., (HIG), Envirosite was contacted to conduct a limited search of accessible State and Federal database files to determine if properties within the vicinity of the Property have had a release or threatened release of a hazardous substance, pollutant Phase I Environmental Site Assessment 16330 US Highway 10 NW, Elk River, Minnesota September 4, 2024 Carlson McCain, Inc.Page 6