MEMORANDUM**

Clear precedent establishes that this court must first determine whether this appeal is moot, because mootness is a jurisdictional question. See Kescoli v. Babbitt, 101 F.3d 1304, 1308 (9th Cir. 1996) *355(quoting Friends of Payette v. Horseshoe Bend Hydroelectric, 988 F.2d 989, 996 (9th Cir. 1993)).

The district court found that the Coalitions’ NHPA claim was moot. We review the district court’s determination that the claim was moot de novo. See Cigna Property and Cas. Ins. Co. v. Polaris Pictures Corp., 159 F.3d 412, 418 (9th Cir. 1998).

We are aware that under Ninth Circuit law, completion of a project does not necessarily moot an environmental claim. See West v. Secretary of Department of Transportation, 206 F.3d 920, 925 (9th Cir. 2000); Tyler v. Cuomo, 236 F.3d 1124, 1137 (9th Cir. 2000); Cuddy Mountain v. Alexander, 303 F.3d 1059, 1066 (9th Cir. 2002). Orneases make clear that completion of activity is not the hallmark for mootness. Rather, a case is moot only where no effective relief for the alleged violation can be given. Id.

The Coalitions’ NHPA claim is moot because the harm that the Coalitions seek to prevent has already occurred and no effective relief for the alleged NHPA violation can be given. The power line is completely installed with power running through it to the telescopes and other means of electricity have been used for decades on Mount Graham.

AFFIRMED.