This bill also clarifies certain emergency actions that may be taken without a permit, if specified criteria are met, when the integrity of a seawall, bulkhead, retaining wall or similar structure in a coastal sand dune system is destroyed or threatened by specifying that protective materials may be left in place to shore up a structure no more than 18 months and by providing that actions taken to strengthen structures must be limited to those necessary to alleviate the imminent threat. Also, the list of those persons authorized to make determinations concerning the integrity of a structure is expanded.