California Code, Public Resources Code - PRC § 3317

This article applies only to lands, referred to in Section 3315, overlying or immediately adjacent to a producing pool or pools, when such lands are subsiding, portions of which lands are subject to threat of inundation from the sea and which subsidence is endangering the life, health and safety of persons or which is damaging or is threatening to cause damage to, any surface or underground improvements located on such lands overlying or immediately adjacent to such pool or pools. The area within the exterior boundaries established pursuant to Section 3336 shall be known as a “subsidence area.”