The issue in this case is whether the Endangered Species Act requires the United States Fish and Wildlife Service to complete formal designation of critical habitat for an endangered fish species , the threespine stickleback ("stickleback"), a small, scaleless freshwater fish, as an endangered species in 1970 under the Endangered Species Act ("ESA"), listed over thirty-five years ago. In 1990, the Bureau of Land Management ("BLM") awarded CEMEX, Inc., a contract to mine fifty-six million tons of sand and gravel from a location in Los Angeles County's Soledad Canyon. Although the mining would not take place within the stickleback's habitat, the project involves pumping water from the Santa Clara River and could cause portions of the river to run dry periodically. Parts of the Santa Clara River commonly dry out during the summer season, trapping stickleback in isolated pools. The Center for Biological Diversity ("CBD") filed suit in 2002, claiming that the Service violated the ESA by failing to complete the designation of critical habitat for the stickleback. In affirming the lower court's decision, the Ninth Circuit, held that it was not arbitrary and capricious for the Service to decide not to designate critical habitat for the stickleback. The Service was not required to ensure compliance with federal and state laws before issuing an ITS (incidental take statement) to CEMEX, and the district court did not abuse its discretion in striking extra-record exhibits offered to establish a new rationale for attacking the Service's decision.