to public housing agencies to evaluate and reduce lead-based paint hazards and other housing-related hazards including carbon monoxide (including for activities supporting the installation and replacement of carbon monoxide alarms or of combination smoke detector-carbon monoxide alarm devices) and mold in public housing: Provided further , That of the amounts available under the preceding proviso, not less than $25,000,000 shall be for competitive grants to public housing agencies to evaluate and reduce lead-based paint hazards in public housing by carrying out the activities of risk assessments, abatement, and interim controls (as those terms are defined in section 1004 of the Residential Lead-Based Paint Hazard Reduction Act of 1992 ( 42 U.S.C. 4851b )): Provided further , That of the total amount made available under this heading, up to $30,000,000 shall be available until September 30, 2023 for competitive grants to public housing agencies (in this title PHAs ), including agencies participating in the MTW demonstration, for full lead service line replacement, with eligibility limited to PHAs where the relevant public water system will undergo or has recently undertaken a comprehensive water main replacement program: Provided further , That for purposes of environmental review, a grant under the preceding three provisos shall be considered funds for projects or activities under title I of the United States Housing Act of 1937 ( 42 U.S.C. 1437 et seq.) for purposes of section 26 of such Act ( 42 U.S.C. 1437x ) and shall be subject to the regulations implementing such section: Provided further , That for funds made available under the preceding four provisos, the Secretary shall allow a PHA to apply for up to 20 percent of the funds made available under the first two of such provisos and prioritize need when awarding grants: Provided further , That $5,000,000 (increased by $3,000,000) of the amounts made available under this heading shall be for a radon testing and mitigation resident safety demonstration