; for environmental studies, as authorized by law; for implementing other laws and to the extent provided by Presidential or Secretarial delegation; and for matching grants or cooperative agreements, $171,000,000, of which $114,166,000 is to remain available until September 30, 2019, and of which $56,834,000 is to remain available until expended: Provided , That this total appropriation shall be reduced by amounts collected by the Secretary and credited to this appropriation from additions to receipts resulting from increases to lease rental rates in effect on August 5, 1993, and from cost recovery fees from activities conducted by the Bureau of Ocean Energy Management pursuant to the Outer Continental Shelf Lands Act, including studies, assessments, analysis, and miscellaneous administrative activities: Provided further , That the sum herein appropriated shall be reduced as such collections are received during the fiscal year, so as to result in a final fiscal year 2018 appropriation estimated at not more than $114,166,000: Provided further , That not to exceed $3,000 shall be available for reasonable expenses related to promoting volunteer beach and marine cleanup activities. Of the unobligated balances available for this account, $25,000,000 are permanently rescinded. Bureau of safety and environmental enforcement Offshore safety and environmental enforcement (including rescission of funds) For expenses necessary for the regulation of operations related to leases, easements, rights-of-way and agreements for use for oil and gas, other minerals, energy, and marine-related purposes on the Outer Continental Shelf, as authorized by law; for enforcing and implementing laws and regulations as authorized by law and to the extent provided by Presidential or Secretarial delegation