For the purpose of carrying out this subchapter, there are authorized to be appropriated $30,000,000 for the fiscal year ending September 30, 1982, $30,000,000 for the fiscal year ending September 30, 1983, $30,000,000 for the fiscal year ending September 30, 1984, and $30,000,000 for the fiscal year ending September 30, 1985.

At least two-thirds of the amounts appropriated to carry out this subchapter shall be used to make grants for demonstration projects for services.

Not more than one-third of the amounts specified under subsection (b) for use for grants for demonstration projects for services shall be used for grants for demonstration projects for prevention services.