Laserfiche WebLink
B-4 <br /> According to published geologic mapping,unconsolidated deposits at the site consist of Pleistocene Peoria <br /> loess and Holocene dunes (Tweto; 1979, and Braddock and Cole; 1978). The loess is composed of fine- <br /> grained particles of silt and clay and the dune sand consists of sand and silt. Surficial unconsolidated <br /> deposits up to 150 feet thick that included sand and gravel were logged in an oil and gas test well in Section <br /> 19, T2N,R63W, about one mile south of the site(COGCC; 2019). <br /> References: <br /> Braddock,W.A.and Cole,J.C.; 1978;Preliminary Geologic Map of the Greeley 1 degree by 2 degrees Quadrangle,Colorado and Wyoming,U.S. <br /> Geological Survey Open-File Report 78-532;Scale 1:250,000 <br /> Colorado Oil and Gas Conservation Commission(COGCC);2019;Online Data https://cogcc.state.co.us/data.hnnl#/cogis <br /> Kirkham,R.M.; 1978;Location Map of Drill Holes Used for Coal Evaluation in the Denver and Cheyenne Basins;Colorado Geological Survey, <br /> Open-File Report 78-08 <br /> Kirkham,R.M.and Ladwig,L.R.; 1979;Coal Resources of the Denver and Cheyenne Basins,Colorado;Colorado Geological Survey Resource <br /> Series RS-5 <br /> Dechesne,M.,Raynolds,R.G.,Barkmann,P.E.,and Johnson,K.R.;2011,Notes on the Denver Basin Geologic Maps:Bedrock Geology,Structure, <br /> and Isopach Maps of the Upper Cretaceous to Paleogene Strata between Greeley and Colorado Springs,Colorado;Colorado Geological Survey <br /> Tweto,O.; 1979;Geologic Map of Colorado;U.S.Geological Survey Special Map,Scale 1:500,000 <br /> Wray,L.L.and Koenig,N.V.;2001;The Coalbed Methane Potential in the Upper Cretaceous to Early Laramie and Denver Formations,Denver <br /> Basin,Colorado;Colorado Geological Survey Open-File Report 01-17 <br /> Climate <br /> The climate over the plains of eastern Colorado generally exhibits abundant sunshine, moderate to high <br /> wind, low relative humidity, a large daily range in temperature, and little precipitation. About 60 to 80 <br /> percent of the annual precipitation falls as rain during April to September, primarily from thunderstorms <br /> (USGS, 1995). <br /> The region surrounding the project area averages an annual high temperature of 68.87 and an annual low <br /> temperature of 36.77. Summer temperatures during July and August average 947 and 917,respectively. <br /> Winter temperatures during January and February average 467 and 50°F,respectively.The average annual <br /> temperature is 52.75°F. <br /> Keenesburg Project—Limited Impact 110 Application_May 24,2019 <br />