5 U.S.C. § 808 — Effective date of certain rules

any rule^* that establishes, modifies, opens, closes, or conducts a regulatory program for a commercial, recreational, or subsistence activity related to hunting, fishing, or camping, or

any rule which an agency for good cause finds (and incorporates the finding and a brief statement of reasons therefor in the rule issued) that notice and public procedure thereon are impracticable, unnecessary, or contrary to the public interest,