v. Allen, 615 F.3d 1122, 1136 (9th Cir.2010) (emphasizing the parsimonious nature of an effective EA) (quoting 40 C.F.R. § 1500.1(b)). The DOE has more than met its burden here. Accordingly, we find that the DOE’s discussion of the 2005 anthrax shipping incident in the DREA and the FREA satisfies NEPA. b. The “Restricted” Experiments We do not reach the issue of whether the DOE’s decision not to include information about “restricted” experiments in the FREA was arbitrary or capricious because the district court properly found that this argument was waived. Here, Tri-Valley CAREs did not address the district court’s ruling that the argument was deemed waived in its opening appellate bricf. Thus, the issue is not properly before us. See Smith v. Marsh, 194 F.3d 1045, 1052 (9th Cir.1999) (<HOLDING>). Claims not made in an opening brief in a
holding that arguments not raised by a party in its open ing brief are deemed waived holding that arguments not raised in district court are waived holding that arguments not raised before the trial court are waived holding that arguments not raised in the opening brief are waived holding that arguments that are not raised or that are not accompanied by factual and legal support are deemed waived