I'm sure there are more, but you can see I have played a fair amount of festival events.

Amador County Fair, Plymouth, CA
Anderson Marsh Bluegrass Festival, Lower Lake, CA
Battle Mountain Bluegrass Festival, Battle Mtn., NV
Berkeley Old Time Music Festival, Berkeley, CA
Bluegrass for the Greenbelt, Albany, CA
Bluegrass on the Comstock, Virginia City, NV
Bluegrassin' in the Foothills Festival, Plymouth, CA
Bower's Mansion Bluegrass Festival, Carson City, NV
Brookdale Bluegrass Festival, Brookdale, CA
Brown Barn Bluegrass Festival, San Martin, CA
CBA Father's Day Bluegrass Festival, Grass Valley, CA
Good Old Fashioned Bluegrass Festival, Hollister, CA
Loma Vista Farms Bluegrass Festival, Vallejo, CA
Manteca Bluegrass Festival, Manteca, CA
Martinez Fall Music Festival, Martinez, CA
Orinda Film Festival, Orinda, CA
President's Day Bluegrass Festival, Sebastopol, CA
SF Bluegrass & Old Time Festival, San Francisco, CA
Scott's Valley Bluegrass Festival, Etna, CA
Sonoma County Bluegrass Festival, Sebastopol, CA
Sutter Creek Arts Fair, Sutter Creek, CA
Two Day Town Music Festival, Livermore, CA
Wintergrass Bluegrass Festival, Tacoma, WA