905.817—Peformance standards—Underground mining activities.

(a) Part 817 of this chapter, Permanent Program Performance Standards—Underground Mining Activities, shall apply to any person who conducts underground mining activities, except for § 817.116(a)(1) regarding revegetation success standards, for which paragraph (c) of this section substitutes.
(c) Standards for success shall be those identified in § 817.116(a)(2) of this chapter. Statistically valid sampling techniques for measuring success shall be included in the mining and reclamation plan, and approved by the regulatory authority.