(a) A project located in Los Angeles County that is approved by a public agency before the effective date of the act adding this section is not in violation of any requirement of this division by reason of the failure to construct a roadway across the property transferred to the state pursuant to subdivision (c) of Section 21080.29 of the Public Resources Code and to construct a bridge over the adjacent Ballona Channel in Los Angeles County, otherwise required as a condition of approval of a vesting tentative map or a tentative map, if all of the following conditions apply:

1. (1) The improvements specified in subdivision (a) are not constructed, due in whole or in part, to the project owner’s or developer’s relinquishment of easement rights to construct the improvements.
2. (2) The easement rights specified in paragraph (1) are relinquished in connection with the acquisition by the State of California, acting by and through the Wildlife Conservation Board of the Department of Fish and Game, of a wetlands project that is a minimum of 400 acres in size and located in the coastal zone.