1030 See Mt. St. Helens Mining & Recovery Ltd. P’ship v. United States, 384 F.3d 721, 729 (9th Cir. 2004) (noting date of valuation for specific acquisitions set by statute).1031 Mt. St. Helens National Volcanic Monument Act, Pub. L. No. 97-243, 96 Stat. 301 (1982), 16 U.S.C. § 431 note (1982) (repealed 2014). 1032 Mt. St. Helens Mining, 384 F.3d at 729; Pub. L. No. 97-243, § 3(b); 36 C.F.R. § 254.9(b) (2015).