shall establish flood risk zones known as AL Zones on the National Flood Insurance Program rate map. (C) Actuarial rates (i) In general The Administrator shall make available flood insurance to properties in AL Zones at actuarial rates based upon the risk associated with structures within the applicable AL zone. (ii) Temporary rates Until the Administrator promulgates actuarial rates for the various AL zones, a structure within a portion of a community located within a levee-impacted area described in subparagraph (A) shall be eligible for rates associated with areas of moderate flood hazards (also known as Standard X zone rates). . 505. Coastal flood models Section 100216(b) of the Biggert-Waters Flood Insurance Reform Act of 2012 ( 42 U.S.C. 4101b(b) ), as amended by section 504, is amended by adding at the end the following: (5) Coastal flood models In updating maps under this section, the Administrator shall use coastal flood models that ensure technically and scientifically accurate modeling to represent and communicate flood risk. . VI Enhancing National Flood Insurance Program transparency and accountability 601. Deadline for approval of claims (a) In general Section 1312 of the National Flood Insurance Act of 1968 ( 42 U.S.C. 4019 ), as amended by section 205, is amended by adding at the end the following: (e) Deadline for approval of claims (1) In general Not later than 30 days after the submission of a proof of loss, the Administrator shall notify the insured regarding the approval or disapproval of the claim. (2) Extension of claim determination deadline The Administrator may extend the deadline under paragraph (1) by a single additional 15-day period under extraordinary circumstances, as determined according to criteria adopted by the Administrator. (3) Payment of claims The Administrator shall make payment for an approved claim as soon as possible after approval of the claim. (f) Notification and proofs of loss (1) In general A flood insurance claim filed under this title for damage to or loss of