US Forest Service permits: Each forest service has their own permits. A permit in one national forest does not transfer to others.
Eldorado National Forest (Morel mushroom forays) - Forest Products Permit guidelines: Mushroom collections of 1 gallon or less per person, per year, is considered incidental use and no permit is required. Mushrooms gathered under incidental use cannot be sold or exchanged in any form.
USFS Website: El Dorado Mushroom Permits
If you wish to purchase a $20 Forest Products Permit (to collect more than "incidental use" amounts of mushrooms), you must go in-person to the Placerville supervisor's office:
Jeff Marsolais, Forest Supervisor
100 Forni Road Placerville, CA 95667
California Relay: 711
Office Hours: 8:00 AM - 4:30PM
Schedule: Monday - Friday
Mapquest: Map and Directions
Recreational US Forest Service Passes and a good idea for camping. El Dorado forest allows 10 days of free camping in unimproved areas, as long as you're off the main roads and not blocking any fire roads or forest access roads. Fires are generally not allowed, but in some areas you can purchase a fire pit permit.