; and (3) $4,470 per inspection for non-rig units operating in water depths of less than 500 feet. (e) The Secretary shall bill designated operators under subsection (b) quarterly, with payment required within 30 days of billing. The Secretary shall bill designated operators under subsections (c) and (d) within 30 days of the end of the month in which the inspection occurred, with payment required within 30 days of billing. disclosure of waivers 108. (a) Subject to subsection (b), in any case in which the Bureau of Safety and Environmental Enforcement or the Bureau of Ocean Energy Management issues any waiver, departure, deviation, variance, or any other alternative compliance authorization from any law, rule, regulation, or other directive, the head of such bureau shall post a copy of such waiver, departure, deviation, variance, or other alternative compliance authorization on such bureau’s publically available website not more than 3 business days after such issuance. (b) The head of each bureau may redact confidential business information. contracts and agreements for wild horse and burro holding facilities 109. Notwithstanding any other provision of this Act, the Secretary of the Interior may enter into multiyear cooperative agreements with nonprofit organizations and other appropriate entities, and may enter into multiyear contracts in accordance with the provisions of section 3903 of title 41, United States Code (except that the 5-year term restriction in subsection (a) shall not apply), for the long-term care and maintenance of excess wild free roaming horses and burros by such organizations or entities on private land. Such cooperative agreements and contracts may not exceed 10 years, subject to renewal at the discretion of the Secretary. mass marking of salmonids 110. The United States Fish and Wildlife Service shall, in carrying out its responsibilities to protect threatened and endangered species of salmon, implement a system of mass marking of salmonid stocks, intended for harvest, that are released