no evidence of federal discretionary involvement or control over the Lumber Companies’ proposed tree harvest. As a result, there is no serious question whether the federal defendants engaged in “agency action” under section 7 of the ESA or in a “major federal action” under NEPA. Without the predicate of a “serious question,” there is.no legal basis for the preliminary injunction issued by the district court.
I
BACKGROUND
A. Parties
The plaintiffs are the Environmental Protection Information Center, the Marbled Murrelet, and the Northern Spotted Owl (collectively EPIC). They filed suit for declaratory and injunctive relief against the federal defendants, Bruce Babbitt, Secretary of the United States Department of Interior, Mollie Beattie, Director of the United States Fish & Wildlife Service, Michael Spear, Director, Region 1, United Statés Fish & Wildlife Service, and against the USFWS; they also sued the Lumber Companies.
Although there are no state parties in this litigation, the California Department of Forestry and Fire Protection (CDF) was involved in the intended tree salvage pursuant to California’s Z’berg-Nejedly Forest Practice Act (FPA). This Act generally requires that before commencing any timber operations in California, a Timber Harvest Plan (THP) must be submitted and approved by the CDF. Cal. Pub. Res.Code §§ 4581-4582.75. Exemptions from these state requirements may be obtained. Id. § 4584. One of these exemptions is for the cutting and removal of “dead, dying and diseased trees” which amount to less than ten percent of the average volume per acre, subject to certain conditions. Id. § 4584(c); Cal-Code Regs. tit. 14, § 1038(b). This exemption, however, does not permit tree cutting or removal in key habitat areas of rare, endangered, or threatened species, or within the buffer zone of such areas. Cal.Code Regs, tit. 14, § 1038(b)(3), (7), & (8).
To obtain a permit to harvest dead, dying and diseased trees, a notice of such proposed timber operation must be submitted to the CDF. Cal.Code Regs. tit. 14, § 1038.1. Within ten days of receipt of the notice, the CDF must determine whether the notice is “complete and accurate.” Cal.Code Regs. tit. 14, § 1038(e). If it is complete and accurate, the CDF sends a notice of acceptance to the submitter. Id. If not, the CDF returns the notice to the submitter. Id. If the CDF fails to act within ten days of receipt of the notice, the timber operations may commence. Id.
B. Facts
In the fall of 1994, the Lumber Companies submitted and the CDF accepted two notices of proposed timber operations to salvage dead, dying, and diseased trees on two parcels of the Lumber Companies’ land. One parcel covered 179,103 acres, the other 12,-695 acres. Both parcels are in Humboldt County in Northern California; A few months later, the Lumber Companies submitted, but the CDF did not accept, a similar notice of proposed timber salvage for another 5,994 acre parcel in Humboldt County including Headwaters Forest. Headwaters Forest is a previously unentered, 3,000-acre old-, growth redwood stand. In a letter accompanying this notice, the Lumber Companies noted that some of the area might be important to threatened or endangered wildlife.
The CDF returned the notice on March 6, 1995, asking the Lumber Companies to provide the location and habitat of any rare, endangered, or threatened species.- Two days later, the Lumber Companies resubmitted the notice, with five additional pages of information designating particular areas as possibly important to protected species.
On March 15, 1995, the CDF accepted the Lumber Companies’ resubmitted notice. The CDF’s acceptance reiterated and clarified the conditions that the Lumber Companies consult with and inform the California Department of Fish and Game-(CDFG) and the USFWS before commencing timber operations. Two days later, the CDF again wrote to the Lumber Companies requiring an on-site inspection “whereby the agencies must approve the cutting of any standing trees.” On March 24, 1995, the Lumber