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United States Bepartment of the Interior Ftsx Arm wanLlr~ sBRV1cE Ecological Services Colonuio Feld Office 755 Parfet Sweet, Suite 361 Lakewood, Colorado 80215 IN REPLY REFER TO: ES/CO: T&FJSpe~es list Mail Stop 65412 .fUL 14 2004 RECEIVE JUL 1 g 2004 Mr: Larry Oehiec Division of Mmetats and Geology Department of Natural Resources 1313 Sherman Street., Room 215 Denver, Colorado 80203 Dear Mr. Oehler. UGlhioo of tttmrab eiro Gsolopy The U.S. Fish and Wildlife Service (Service) received your memorandum dated July 2, 2004, regarding the notice of application for Aggregate Industries _ WCR, Iac., Tucson South Resource, File No. M 2004-Q44, in Adams County, CoIonrdo. For your convenience, we have enclosed a list of Colorado's threatened and endangered species, as welt as the counties in which they are kaown to occur. We cannot provide site- apeciflc details. If questions regarding the presence of an endangered species, the extent of its habitat, or the effects of a particular action need to be resolved, the Service recommends that a knowledgeable consultant be contacted to conduct habitat assessments, trapping studies, or to provide recommendations regarding options under the Endangered Species Act. Due to staffing constraints, the Colorado. Field Office cannot provide yon with these services. Since 1978, the Service has consistently taken the position in its section 7 consultations that Federal agency actions resulting in existing or new water depletions to the Platte River system may affect rho endangered whooping crane (Gros americans), endangered interior least rem (Sterna antiltarum), threatened piping plover (Charadrius melodus), endangered pallid sturgeon (Scaphirhync/urs albus), threatened bald eagle (Hsliaeetus leucocephalus}, endangered Eskimo curlew (Numenius borealis), threatened western prairie fringed orchid (FlatantkEra prseelara}, and deaigitated critical habitat for the whooping sane and piping plover in the central Platte River in Nebraska. In general, depletions include evaporative- losses andlor consumptive use less return flows. Project elements that could be associated with depletions to the Platte River system include, but are not limited to, ponds (detentionlrecreation/Irrigation storage), lakes (recreationlirrigation storagelmunicipal storagdpower generation), reservoirs (recreadonlirrigadon storagelmunicipal storagelpowcr generation), pipelines, wells, diversion structures, and water treatment facilities.