There is authorized to be appropriated not to exceed $26 million to carry out the provisions of this section. Not to exceed $3 million shall be available for planning:
Provided, That any funds not used for planning shall be available for land acquisition;
Provided further, That $23,000,000 shall be made available for land acquisition, as authorized by this section. Such appropriations may be made from the general fund of the Treasury or from revenues due and payable to the United States under the Outer Continental Shelf Lands Act, as amended [
43 U.S.C. 1331 et seq.], which would otherwise be credited to miscellaneous receipts.