Urban encroachment made military aviation nearly impossible at Marine Corps Air Station El Toro, and it, too, was closed.

However, unlike the bases in the Inland Empire, El Toro has several factors that prevent it from handling commercial aviation. For example:

• It is located in a densely populated urban area.
• It is surrounded on three sides by mountains.



1. Defense Base Closure and Reassignment Commission 1993 report to the President (pg 1-17) - PDF