[en] This Environmental Assessment (EA) addresses the proposed transportation, receipt, and storage of up to 1482 blocks of spent nuclear fuel from the Fort St. Vrain (FSV) reactor, located in Platteville, Colorado, to the Idaho National Engineering Laboratory (INEL). The purpose of this EA is to analyze the impacts which may result from this proposed action. Decommissioning of the FSV reactor necessitates the storage of irradiated reactor fuel until final disposition can be accomplished. In accordance with existing agreements between DOE and Public Service Company of Colorado (PSC), the spent fuel would be transported to the INEL by PSC in compliance with applicable transportation requirements and using shipping casks certified by the Nuclear Regulatory Commission (NRC). The spent fuel blocks would be removed from the shipping casks and transferred to the storage area of the Irradiated Fuel Storage Facility (IFSF) which was specifically designed for interim storage of this fuel. 56 refs., 11 figs., 9 tabs