; and (2) satisfies, for all such properties within the community, the mandatory purchase requirements under section 102 of the Flood Disaster Protection Act of 1973 ( 42 U.S.C. 4012a ). (b) Participation Participation by a community in the pilot program under this section shall be at the sole discretion of the community. (c) Requirements for Community-Wide Policies The Administrator shall ensure that a community-wide flood insurance policy made available under the pilot program under this section incorporates the following requirements: (1) A mapping requirement for properties covered by the policy. (2) A deductible. (3) Certification or accreditation of mitigation infrastructure when available and appropriate. (4) A community audit. (5) A method of preventing redundant claims payments by the National Flood Insurance Program in the case of a claim by an individual property owner who is covered by a community-wide flood insurance policy and an individual policy obtained through the Program. (6) Coverage for damage arising from flooding that complies with the standards under the National Flood Insurance Program appropriate to the nature and type of property covered. (d) Timing The Administrator may establish the demonstration program under this section not later than the expiration of the 180-day period beginning on the date of the enactment of this Act and the program shall terminate on September 30, 2022. (e) Definition of community For purposes of this section, the term community means any unit of local government, within the meaning given such term under the laws of the applicable State. 306. Mitigation funding For each of the first 5 fiscal years beginning after following the date of the enactment of this Act, there is authorized to be appropriated $200,000,000 to carry out the flood mitigation assistance grant program under section 1366 of the National Flood Insurance Act of 1968 ( 42 U.S.C. 4104c ). 307. Community Rating System Improvements (a) Provision of community rating system premium credits to maximum