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C) <br /> RPM,Inc.,25049 E.Alder Dr.,Aurora,CO 80016 Phone:(303)854-74" Email:h1humphries2ncomeast.net <br /> ESD: Salt Meadow—R067BY031 CO: <br /> United States Department of Agriculture <br /> Natural Resources Conservation Service <br /> Ecological Site Description <br /> Section I: Ecological Site Characteristics <br /> Ecological Site Identification and Concept <br /> Site stage: - <br /> . :+i an ESD at the provisional status represents the lowest tier of documentation that is releasable to the public.11 Contains a grouping c'sod <br /> units that respond similarly to ecological processes The ESD contains 1)enough information to distinguish it from similar ano associated ecological <br /> sites and 2)a draft state and transition model capturing the ecological processes and vegetative states and community phases as they are currently <br /> conceptualized_The provisional ESQ has undergone both quality control and quality assurance protocols.It is expected that the provisional ESD wail <br /> continue refinement towards an approved status. <br /> Site name:Sandy Bottomiand <br /> t Arfemisia fillifohe/Andropogon haNii-CalamoviHa long(lolia <br /> (r sand sagebrush!sand biuestam-prame sandreed) <br /> Site type:Rangeland <br /> Site 1D'R067BY031CO <br /> M4*land resource area(MLRA):067B-Central High Plains,Southern Part <br /> IMLRA ale,Earaem Cdwada <br /> MLRA 67B-Central High Plains,Southern Part is located in eastern Colorado.It is comprised of rolling plains and river valleys.Some <br /> cartyoniands occur in the southeast portion.The major rivers are the South Platte and Arkansas which flow from the Rocky Mountains to <br /> Nebraska and Kansas.Other rivers in the MLRA include the Cache la Poudre and Republican.The rivers have many tributaries.This <br /> ecological site is traversed by 1-25.1-70 and 1-76,and U.S.Highways 50 and 287,Major land uses include 54%rangeland,35%cropland, <br /> and 2%pasture and hayland Urban and developed open space.and miscellaneous land occupy approximately 9%of the remainder.Cities <br /> in this area include Fort Collins,Greeley,Sterling,and Denver.Other cities include Limon,Cheyenne Wells,and Springfield-Land <br /> ownership is mostly private.Federal lands include Pawnee and Comanche National Grasslands(U.S Forest Service),Sand Creek <br /> Massacre National Historic Site(National Park Service),and Rocky Mountain Arsenal National Wildlife Refuge(U.S.Fish&Wildlife <br /> Service).State Parks include Cherry Creek and Chatfield Reservoirs,and Barr and Jackson Lakes. <br /> This region is periodically affected by severe drought,including the historic"Dust Bowl'of the 1930s.Dust storms may form during drought <br /> years,in windy periods.Elevations range from <br /> 3,400 to 6.000 feet.The Average annual precipitation ranges from 14-17 inches per year,and ranges from 13 inches to over 18 inches, <br /> depending on location Precipitation occurs mostly during the growing season,often during rapidly developing thunderstorms.Mean annual <br /> air temperature(MAAT)is 48-52°F.Summer temperatures may exceed 1 oo°r.Winter temperatures may be sub-zero,and snowfall varies <br /> 27 <br />