Amphitheater Unauthorized Bike Trail


SCH Number
Public Agency
California Department of Parks and Recreation
Document Title
Amphitheater Unauthorized Bike Trail
Document Type
NOE - Notice of Exemption
Document Description
Remove and rehabilitate unauthorized, user-constructed trails in a remote area of Riggs Canyon in Mount Diablo State Park to prevent erosion, reduce the spread of invasive species and protect natural and cultural resources in the area. Prompt action is necessary to prevent further resource damage and to discourage this type of illegal activity in the future.

Contact Information

Gina Benigno
Agency Name
California State Parks, Diablo Range District
Job Title
District Environmental Coordinator
Contact Types
Lead/Public Agency


Contra Costa
Northern California
Other Location Info
Mount Diablo State Park

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15301, 15303 & 15304
Reasons for Exemption
Project consists of the repair, maintenance or minor alteration of existing public or private structures, facilities, or topographical features involving negligible or no expansion of use beyond current levels; construction and location of limited numbers of new, small facilities; and minor public or private alterations in the condition of land, water, and/or vegetation which do not involve removal of healthy, mature, scenic trees except for forestry or agricultural purposes, and is included as “Construction or installation of park facilities such as signs” and “trail removal” in the Department of Parks and Recreation’s list of exempt activities in accordance with CCR §15300.4.


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