Unless otherwise stated, these provisions apply in addition to the requirements of chapter X of title 36 of the Code of Federal Regulations, and terms used in these provisions shall have the same meaning as those in chapter X of title 36 of the Code of Federal Regulations. Written determinations explaining the reasoning behind certain of these provisions are provided in italicized passages. This Compendium is complete and accurate as of the date last written below. It is not possible to supervise the public in these areas, and damage to the resources of the area administered by the Presidio Trust would result. In addition, these areas provide vital habitat for birds and sealife, and the vegetated areas contain native and historical vegetation that is sensitive to trampling.
Restrictions are for the protection of significant natural and cultural resources.
In addition, the Endangered Species Act requires special protection for the threatened and endangered species found in the area administered by the Presidio Trust. Feral animals have an adverse impact on wildlife and conflict with resource preservation. In the area administered by the Presidio Trust, the idling of bus or commercial vehicle engines while loading, unloading or waiting for passengers to reboard is prohibited. Bus engines must remain off until all passengers have reboarded and the bus is ready for departure. This area receives a great deal of traffic and this regulation intends to reduce the amount of pollutants and audio disturbances affecting visitors.