housing agencies participating in the MTW demonstration shall be funded pursuant to their MTW agreements, and shall be subject to the same uniform percentage decrease as under the previous proviso: Provided further , That the Secretary may make temporary adjustments to the administrative fee eligibility determinations for public housing agencies in an area for which the President declared a disaster under title IV of the Robert T. Stafford Disaster Relief and Emergency Assistance Act ( 41 U.S.C. 5170 et seq.), to avoid significant funding reductions that would otherwise result from the disaster, upon request by a public housing agency and supported by documentation as required by the Secretary that demonstrates that the need for the adjustment is due to the disaster: Provided further , That amounts provided under this paragraph shall be only for activities related to the provision of tenant-based rental assistance authorized under section 8, including related development activities