OVERVIEW
Forest Guardians, Southwest Center for Biological Diversity, and Dr. Robin Silver (collectively “Forest Guardians”), filed suit against Mike Dombeck in his official capacity as Chief of the United States Forest Service seeking a declaratory judgment and injunc-tive relief for alleged violations of the National Forest Management Act (“NFMA”), 16 U.S.C. §§ 1600 et seq. Forest Guardians appeal from the district court’s summary judgment in favor of the Forest Service. We have jurisdiction under 28 U.S.C. § 1291, and we affirm.
FACTS AND PROCEDURAL HISTORY
Enacted in 1976, the NFMA provides a statutory framework for the management of National Forest lands. See 16 U.S.C. §§ 1600 et seq. The NFMA directs the Secretary of Agriculture (“Secretary”) to develop Land and Resource Management Plans (“LRMPs”) for units of the National Forest System in order to provide for multiple uses and sustained yield of the various forest resources on a coordinated basis. See 16 U.S.C. § 1604(e). The National Forest System, administered by the Forest Service, consists of some 154 national forests in forty states. The Forest Service functions through a regional system composed of nine regions, each under the supervision of a regional forester.
Region 3, the Southwestern Region at issue in this appeal, encompasses six national forests in Arizona and five national forests in New Mexico. Forest plans for those eleven forests were completed between 1985 and 1988. In June 1996, the Forest Service
On October 1,1996, Forest Guardians filed a complaint for declaratory judgment and injunctive relief against the Forest Service in the Arizona District Court. Forest Guardians alleged that the Forest Service was violating the NFMA because the Forest Service’s ROD stated that decisions made prior to the 1996 Plan Amendments, which were still being implemented, would not have to conform to the new standards and guidelines. Forest Guardians sought to enjoin implementation of all forest management activities not consistent with the newly amended forest plans, and to enjoin all future authorizations for the use and occupancy of national forest lands not consistent with those plans. Forest Guardians moved for a preliminary injunction and both parties filed cross-motions for summary judgment.
Pending the district court’s resolution of those motions, this court temporarily enjoined certain Forest Service activities in the Southwestern Region. On June 26,1997, the district court held that the Forest Service’s implementation of the 1996 Plan Amendments did not violate the NFMA, and granted summary judgment for the Forest Service. The district court also disposed of a number of motions filed by individual timber harvesting companies. Stone Container Corporation’s motion to intervene was granted. La Compañía Ocho, Inc.’s motion to participate as amicus curiae was granted. Precision Pine & Timber, Inc.’s (“Precision Pine”) motion to participate as amicus curiae was granted but its motion to intervene was denied.
Forest Guardians timely appealed, and sought emergency injunctive relief from this court. Precision Pine appealed the denial of its motion to intervene. Pending resolution of this appeal, this court enjoined certain forest management activities within the Southwestern Region inconsistent with the new standards and guidelines established by the 1996 Plan Amendments.
This case presents an issue of first impression. The question before us is whether the Forest Service’s decision to implement the 1996 Plan Amendments prospectively, but not retroactively, violates the NFMA. We hold that it does not.
A. Standard of Review
A grant of summary judgment is reviewed de novo. See Forest Conservation Council v. Rosboro Lumber Co.,
“We accord a high degree of deference to an agency’s interpretation of the statutory provisions and regulations it is charged with administering.” Natural Resources Defense v. United States Dep’t of Interior,
To ascertain the intent of Congress, we first must determine “whether Congress has directly spoken to the precise question at issue.” Conlan,
When construing statutory language, “we assume that the legislative purpose is expressed by the ordinary meaning of the words used.” Id. (quoting Buettner v. Kavilco, Inc.,
B. Amendments to LRMPs Under the NFMA
The statute at issue in this case, 16 U.S.C. § 1604, titled “National Forest System land and resource management plans,” requires the Secretary to “develop, maintain, and, as appropriate, revise land and resource management plans for units of the National Forest System.” See 16 U.S.C. § 1604(a). The NFMA provides for a two-stage approach to forest planning. See Inland Empire Public Lands v. United States Forest Service,
Forest Guardians contend that the Forest Service’s decision not to apply the 1996 Plan Amendments retroactively to projects that had already been authorized violates the NFMA because the plain language of the “consistency” provision, 16 U.S.C. § 1604(i), mandates that pre-amendment approved projects be updated so as to comply with the new standards and guidelines. Section 1604® reads:
Resource plans and permits, contracts, and other instruments for the use and occupancy of National Forest System lands shall be consistent with the land management plans. Those resource plans and permits, contracts, and other such instruments currently in existence shall be revised as soon as practicable to be made consistent with such plans. When land management plans are revised, resource plans and permits, contracts, and other instruments, when necessary, shall be revised as soon as practicable. Any revision in present or future permits, contracts, and other instruments made pursuant to this section shall be subject to valid existing rights.
16 U.S.C. § 1604®.
The Forest Service, however, argues that, in drafting the NFMA, Congress intended to grant the Secretary discretion in amending existing forest plans, including the discretion to determine how those amendments will be implemented. This argument is premised upon section 1604(f)(4), which requires that LRMP’s developed in accordance with section 1604 shall:
be amended in any manner whatsoever after final adoption after public notice, and, if such amendment would result in a significant change in such plan, in accordance with the provisions of subsections (e) and (f) of this section and public involvement comparable to that required by subsection (d) of this section
16 U.S.C. § 1604(f)(4).
We agree with the Forest Service. The plain language of section 1604(f)(4) permits the Secretary to amend existing LRMPs “in any manner whatsoever.” See id. Since Congress has spoken on this issue, we must give force to its expressed intent. See Conlan,
Significantly, our reading comports with the established legal principle that absent explicit legislative intent to the'contrary, “congressional enactments and administrative rules will not be construed to have retroactive effect unless their language requires this result.” Chenault v. United States Postal Service,
Any revision in present or future permits, contracts, and other instruments made pursuant to this section shall be subject to valid existing rights.
16 U.S.C. § 1604(i).
Legislative history indicates that this provision was “needed to make it clear that the government is not taking any private rights or other interest as part of [its] action in compliance with this section.” S.Rep. No. 94-893, at 47-48 (1976), reprinted in 1976 U.S.C.C.A.N. 6662, 6706.
In this case, the retroactive application of the 1996 Plan Amendments would impair the valid existing rights of parties who held authorizations, permits, or contracts for the use of Forest resources in the Southwestern regional forests prior to the Amendments’ adoption. The point is underscored by the losses that Precision Pine has already suffered as the result of this court’s temporary suspension of its timber sales contracts with the Forest Service because they do not comply with the new Amendments.
Because § 1604(i) does not prohibit prospective-only implementation of plan amendments, the Forest Service activities at issue here are not inconsistent with the newly amended forest plans. Through prospective-only application of the 1996 Plan Amendments, prior existing agreements are indirectly “grandfathered” into the new forest plans, leaving the new standards applicable only to future agreements. Thus, applying the old standards to prior existing agreements is consistent with the new plans, and does not violate § 1604(i).
Accordingly, we cannot say that the Forest Service illegally restricted the application of the 1996 Amendments to new authorizations, contracts, and permits.
C. Conclusion
We affirm the summary judgment in favor of the Forest Service. This court’s temporary injunction effecting Forest Service management activities approved prior to the adoption of the 1996 Plan Amendments, including the La Manga timber sale, is vacated.
PRECISION PINE & TIMBER, INC.
With regard to Precision Pine’s appeal, we agree that the district court should have granted intervention as of right. See Northwest Forest Resource Council v. Glickman,
AFFIRMED.
Notes
. Because we affirm the district court’s summary judgment on the merits, we need not and do not address whether the doctrine of res judicata applies in this case with regard to the La Manga timber sale. Accordingly, all related motions currently pending before this court are denied as moot.
