Center for Biological Diversity, et al. v. United States Bureau of Land Management, et al.

CourtDistrict Court, D. Arizona
DecidedMarch 31, 2026
Docket4:24-cv-00141
StatusUnknown

This text of Center for Biological Diversity, et al. v. United States Bureau of Land Management, et al. (Center for Biological Diversity, et al. v. United States Bureau of Land Management, et al.) is published on Counsel Stack Legal Research, covering District Court, D. Arizona primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Center for Biological Diversity, et al. v. United States Bureau of Land Management, et al., (D. Ariz. 2026).

Opinion

1 WO 2 3 4 5 6 IN THE UNITED STATES DISTRICT COURT 7 FOR THE DISTRICT OF ARIZONA

9 Center for Biological Diversity, et al., No. CV-24-00141-TUC-RM

10 Plaintiffs, ORDER

11 v.

12 United States Bureau of Land Management, et al., 13 Defendants. 14 15 Pending before the Court is Plaintiffs’ Motion for Summary Judgment on Claim 1 16 and Claim 2 of the Second Amended Complaint (Doc. 28), and Defendants’ Cross-Motion 17 for Summary Judgment on Claim 1 and Claim 2 of the Second Amended Complaint (Doc. 18 31). The Motions are fully briefed. (Docs. 32, 36, 43.) For the following reasons, the Court 19 will grant Plaintiffs’ Motion, and deny Defendants’ Motion. 20 In Claim 1, Plaintiffs challenge a 2018 Letter of Concurrence issued by the Fish and 21 Wildlife Service (“FWS”) finding that reauthorization of livestock grazing on the 22 Horseshoe Allotment of the Agua Fria National Monument was not likely to adversely 23 affect any threatened or endangered species, or adversely modify their critical habitat. 24 (Doc. 47 at 43.)1 In Claim 2, Plaintiffs challenge a 2024 Letter of Concurrence by the FWS 25 making the same finding. (Id. at 44.) Plaintiffs assert in both Claim 1 and Claim 2 that the 26 Bureau of Land Management independently violated the law by relying upon each deficient 27 Letter of Concurrence. (Doc. 47 at 43-44.)

28 1 All citations to the record herein refer to the page numbers generated by the Court’s electronic case management system. 1 I. Statutory Framework 2 The Endangered Species Act (“ESA”) “was enacted, in relevant part, to provide for 3 the conservation of endangered and threatened species, as well as the ecosystems upon 4 which such species depend.” Ctr. for Biological Diversity v. Jewell, 248 F. Supp. 3d 946, 5 950 (D. Ariz. 2017), amended in part, No. CV-14-02506-TUC-RM, 2017 WL 8788052 6 (D. Ariz. Oct. 25, 2017) (citing 16 U.S.C. § 1531(b)). The Secretary must designate 7 “critical habitat” for species designated as endangered or threatened (“listed species”), 8 consisting of the areas containing natural features that are “essential to the conservation of 9 the species” and which “may require special management considerations or protection.” 16 10 U.S.C. § 1532(5)(A). 11 The ESA requires “federal agencies authorizing, funding, or carrying out actions 12 that may affect listed species or their critical habitat—so-called ‘action agencies’—to 13 engage in consultation” with either the FWS, for terrestrial species, or the National Marine 14 Fisheries Service, for marine species. Pacificans for a Scenic Coast v. California Dep’t of 15 Transportation, 204 F. Supp. 3d 1075, 1083 (N.D. Cal. 2016) (citing 16 U.S.C. § 16 1536(a)(2)). Federal agencies must ensure that their action “is not likely to jeopardize the 17 continued existence” of any listed species “or result in the destruction or adverse 18 modification” of the critical habitat of any listed species. 16 U.S.C. § 1536(a)(2). 19 If critical habitat or listed species are present in an area of agency action, the agency 20 undertaking the action generally prepares a Biological Assessment to determine whether 21 the listed species or critical habitat is “likely to be affected” by the proposed action. Nat. 22 Res. Def. Council v. Haaland, 102 F.4th 1045, 1055 (9th Cir. 2024). If the action agency 23 determines—and the applicable wildlife management agency concurs—that the proposed 24 action is “not likely to adversely affect listed species or critical habitat, the consultation 25 process is terminated, and no further action is necessary.” Id. (citing 50 C.F.R. § 402.13(c)). 26 If the action agency determines that the proposed action is “likely to adversely affect listed 27 species or a critical habitat,” however, formal consultation is required. Id. (citing 50 C.F.R. 28 § 402.14(a)-(b)). Formal consultation requires the preparation of a Biological Opinion, 1 which determines whether the proposed action would likely jeopardize a listed species or 2 critical habitat. Id. (citing 16 U.S.C. § 1536(b)(3)(A)). If there is a finding that the proposed 3 action would jeopardize a listed species or critical habitat, the applicable wildlife 4 management agency must suggest “reasonable and prudent alternatives” that can be used 5 to avoid such jeopardization. Id. (citing 15 U.S.C. § 1536(b)(3)(A)). 6 After consultation has been completed, the action agency remains subject to an 7 obligation to reinitiate consultation with the applicable wildlife management agency 8 “where discretionary Federal involvement or control over the action has been retained or 9 is authorized by law and . . . new information reveals effects of the action that may affect 10 listed species or critical habitat in a manner or to an extent not previously considered.” Id. 11 (citing 50 C.F.R. § 402.16(a)). Therefore, even if the underlying agency action is complete, 12 an agency must still satisfy its obligations . . . including reinitiation of consultation, to the 13 extent it retains regulatory authority over the action.” Id. at 1055-56. 14 II. Factual Background 15 Claims 1 and 2 in this action arise from livestock grazing in the Horseshoe 16 Allotment of the Agua Fria National Monument in central Arizona undertaken by private 17 parties pursuant to permits issued by the Bureau of Land Management (“BLM”). (Doc. 47 18 at 43-44.) Plaintiffs are two organizations that focus on species conservation, and each have 19 members that regularly visit the Agua Fria National Monument to recreate, and to 20 photograph and study wildlife. (Docs. 28-6, 28-7, 28-8.) Plaintiffs argue that the livestock 21 grazing permitted by Defendants has caused serious damage to the critical habitat of two 22 species protected by the ESA—the Gila Chub, a native fish, and the western-yellow-billed 23 Cuckoo, a migratory bird that winters in South America. (Doc. 28 at 5, 9.) Pursuant to 24 Section 4 of the ESA,2 the Chub has been designated an endangered species, and the 25 Cuckoo has been designated a threatened species. (FWS03047, FWS04130.) As a result of 26 these designations, riparian areas along the Agua Fria River have been given the status of 27 critical habitat for the Cuckoo, and riparian areas along a tributary of the Agua Fria River,

28 2 Section 4 of the ESA directs the Secretary of the Interior to “determine whether any species is an endangered or a threatened species[.]” 16 U.S.C. § 1533(a)(1). 1 Silver Creek, contain critical habitat for both the Chub and the Cuckoo. (FWS01280.) 2 The Agua Fria National Monument was designated by Presidential proclamation in 3 2000. (FWS00035.) The Bureau of Land Management (“BLM”) is charged with managing 4 the Monument, including “issuing and administering grazing leases” on its lands.

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Center for Biological Diversity, et al. v. United States Bureau of Land Management, et al., Counsel Stack Legal Research, https://law.counselstack.com/opinion/center-for-biological-diversity-et-al-v-united-states-bureau-of-land-azd-2026.