based on relevant scientific information and land use planning studies, and after holding at least one public hearing in the area that would be affected by a revision of the boundaries of the Rim of the Valley Trail Corridor, that a boundary revision in the vicinity of the City of Santa Clarita, including Whitney Canyon, Elsmere Canyon, and their adjacent watersheds, is necessary, the executive director shall prepare and file with the Secretary of State, the Assembly Committee on Natural Resources and the Senate Committee on Natural Resources and Water, a revised map showing the changes in the boundaries of the Rim of the Valley Trail Corridor.

in Elsmere Canyon, at any time, may request of the conservancy, in writing, that his or her property be included within the boundaries of the Rim of the Valley Trail Corridor. Upon receipt of the request, the conservancy may, in accordance with the procedures prescribed in paragraphs (1) and (2), revise the map showing the boundaries of the Rim of the Valley Trail Corridor to include within the corridor the property in Elsmere Canyon that is the subject of the request.