; and (B) shall be related to disaster relief, long-term recovery, restoration of housing and infrastructure, economic revitalization, and mitigation in the most impacted and distressed areas resulting from the major disaster for which the grant was awarded. (2) Prohibition Grant funds under this section may not be used for costs reimbursable by, or for which funds have been made available by, the Federal Emergency Management Agency, or the United States Army Corps of Engineers. (3) Administrative costs, technical assistance and planning (A) In general The Secretary shall establish in regulation the maximum grant amounts a grantee may use for administrative costs, technical assistance and planning activities, taking into consideration size of grant, complexity of recovery, and other factors as determined by the Secretary, but not to exceed 10 percent for administration and 20 percent in total. (B) Availability Amounts available for administrative costs for a grant under this section shall be available for eligible administrative costs of the grantee for any grant made under this section, without regard to a particular disaster. (4) Program income Notwithstanding any other provision of law, any grantee under this section may retain program income that is realized from grants made by the Secretary under this section if the grantee agrees that the grantee will utilize the program income in accordance with the requirements for grants under this section, except that the Secretary may— (A) by regulation, exclude from consideration as program income any amounts determined to be so small that compliance with this paragraph creates an unreasonable administrative burden on the grantee