Alta Vista Fuelbreak; Project Number 5GG20156


SCH Number
Public Agency
California Department of Forestry and Fire Protection (CAL FIRE)
Document Title
Alta Vista Fuelbreak; Project Number 5GG20156
Document Type
NOE - Notice of Exemption
Document Description
The Alta Vista Fuelbreak occurs on both federal (BLM) and private lands. This NOE and associated ERRF cover the CEQA assessment on private lands. The Alta Vista Fuelbreak has an east-west orientation and will be ~6.5 miles long, averaging 400’ wide, and encompassing approximately 315 acres (221.44 acres on Private Lands and 93.80 acres on BLM Lands) between 2500-4200’ elevation. The fuelbreak will follow the Alta Vista Ridgeline, then travel through, and directly protect, the communications and broadcasting tower complex atop the Mt. Bullion Knob and terminate its western extent at the CYA Road adjacent to the CAL FIRE Mt. Bullion Conservation Camp. The project area includes 41 Assessor’s Parcels. The project area vegetation is primarily oak woodland, with some pine trees, shrubs, and grassland understory. The vegetation community is well adapted to fire activity and recovery. The vegetation community can recover quickly from mastication treatment; maintenance of the fuelbreak is then a high priority. While management goals on private lands vary, prevalent is the prevention of catastrophic wildfire. The silvicultural strategy is to retain healthy trees to create a shaded fuelbreak condition with tree crowns spaced for full utilization of available sunlight, water and nutrients. This treatment will significantly reduce the opportunity for a crown fire. The majority of dead and decadent stands of shrubs/brush and other ladder fuels will be removed. Resulting logs that are large/long enough to truck may be removed from the site and delivered to a biomass facility. Treatment methods include: Mechanical Mastication: A mechanical masticator would be utilized to grind, chip, and shred vegetation on site. Equipment selected to carry out this task is designed to minimize ground disturbance such as tracked rather than rubber-tired vehicles and articulating booms. Multiple cutting attachments will be used to adapt to the fuel type and terrain. Ladder fuels will be eliminated in the project area, minimizing the risk of crown fire. The average depth of masticated material will be 2-7 inches deep; this mulch layer will assist in erosion control, soil moisture retention and will also suppress vegetative resprouting. Manual Mastication: The project area contains some areas – particularly on slopes over 45% – that would be constructed by a hand crew (i.e., a California Department of Corrections and Rehabilitation (CDCR) inmate crew or a private contractor). In addition to using chainsaws and other hand tools, crews would feed cut vegetation into a rubber-tracked brush chipper or similar chipper staged on existing roads and trails. The chipped vegetation would be broadcast over the project area which will aid in the suppression of undesirable brush sprouting. As an alternative where access for a chipper is not attainable, fuels may be reduced manually via “lop and scatter” of the material (vegetation is cut into short strips and dispersed evenly over the treatment area).

Contact Information

Brian Mattos
Agency Name
California Department of Forestry and Fire Protection
Job Title
Contact Types
Lead/Public Agency


Total Acres
Other Location Info
Portions of T05S R17E Sec 1; T04S R18 Secs 31 & 32; T05S R18E Secs 3, 4, 5, 6, 10 & 11 MDB&M.
Other Information
Along Alta Vista Ridgeline

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 4 §15304 Minor Alterations to Land
Reasons for Exemption
This project fits under the description for a Class 4 Categorical Exemption to CEQA. An environmental review was conducted to confirm that no exceptions apply which would preclude the use of a Notice of Exemption for this project. This review included an on-the-ground field inspection by a Registered Professional Forester on various dates from February to June 2022. A full Archeological Survey Report was reviewed by Sonoma State University Archeologist Mark Walker, whose recommendations were incorporated into the associated Archeological Survey Report. In addition, consultation/correspondence was sent to representatives of the California Department of Fish and Wildlife and Regional Water Quality Control Board. Input proposed by RWQCB was incorporated into the associated ERRF. No input was received from CDFW. The Department has concluded that no significant environmental impact would occur to aesthetics, agriculture and forestland/timberland, air quality, biological resources, cultural resources, energy, geology and soils, greenhouse gas emissions, hazards and hazardous materials, hydrology and water quality, land use planning, mineral resources, noise, population and housing, public services, recreation, transportation/traffic, wildfire or to utilities and service systems. Documentation of the environmental review is kept on file at MMU Unit Headquarters in Mariposa, CA.


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