Toyon Fire Road Upgrade Project (Notification of Lake or Streambed Alteration, No. EPIMS-MAN- 31234-R3)
Summary
SCH Number
2023100804
Public Agency
California Department of Fish and Wildlife, Bay Delta Region 3
(CDFW)
Document Title
Toyon Fire Road Upgrade Project (Notification of Lake or Streambed Alteration, No. EPIMS-MAN- 31234-R3)
Document Type
NOE - Notice of Exemption
Received
Posted
10/27/2023
Document Description
The Project is limited to installing three new culverts with rip-rap energy dissipators at their outfalls and placement of rip-rap at the outfall of one existing culvert. At Site 156, an 18-inch diameter by 40-foot-long corrugated metal culvert will be installed across Toyon Fire Road. Approximately 16 cubic yards will be excavated and backfilled during installation. Rip-rap will be placed at the outfall in an area 8 feet long parallel to the stream flow and three feet wide. At Site 158, rip-rap will be placed at the outfall of an existing 18-inch diameter by 40-foot-long corrugated metal culvert installed across Toyon Fire Road. Rip-rap will be placed at the outfall in an area six feet long parallel to the stream flow. Work at this location will use equipment staged on Toyon Fire Road therefore no temporary impact to the stream from equipment staging is anticipated. At Site 162, an 18-inch diameter by 30-foot-long corrugated metal culvert will be installed across Toyon Fire Road. Approximately 12 cubic yards will be excavated and backfilled during installation. Rip-rap will be placed at the outfall in an area 7 feet long parallel to the stream flow and three feet wide. At Site 193, an 18-inch diameter by 30-foot-long corrugated metal culvert will be installed across Toyon Fire Road. Approximately 12 cubic yards will be excavated and backfilled during installation. Rip-rap will be placed at the outfall in an area 8 feet long parallel to the stream flow and three feet wide. At all sites, rip-rap will consist of 12-inch to 18-inch diameter rock. A hole will excavated to a minimum of two feet below grade to hold the rock, and the base layer of rock will be keyed into the soil. When complete, rip-rap installed in the hole will meet existing surface grade. The Project will result in 118 square feet and 34 linear feet of temporary impacts to stream and riparian habitat, and 96 square feet and 35 linear feet of permanent impacts to stream and riparian habitat. The Project will not remove trees and will not include stream dewatering or in-water work.
Contact Information
Name
Alex Single
Agency Name
CDFW
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency
Phone
Location
Cities
Fairfax
Counties
Marin
Regions
Northern California, San Francisco Bay Area
Other Location Info
Site 156: unnamed tributary to San Anselmo Creek, on Toyon Fire Road and approximately 820 feet north of the intersection of Toyon Fire Road and Toyon Drive in the Town of Fairfax; Latitude 37.982042 °N, Longitude - 122.604299 °W.
Site 158: unnamed tributary to San Anselmo Creek, on Toyon Fire Road and approximately 950 feet north of the intersection of Toyon Fire Road and Toyon Drive in the Town of Fairfax; Latitude 37.982388 °N, Longitude -122.603635 °W.
Site 162: unnamed tributary to San Anselmo Creek, on Toyon Fire Road and approximately 1,810 feet northnorthwest of the intersection of Toyon Fire Road and Toyon Drive in the Town of Fairfax; Latitude 37.984590 °N,Longitude -122.605715 °W.
Site 193: unnamed tributary to San Anselmo Creek, on Toyon Fire Road and approximately 2,430 feet northnorthwest of the intersection of Toyon Fire Road and Toyon Drive in the Town of Fairfax; Latitude 37.986250 °N, Longitude -122.606167 °W.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15301
Reasons for Exemption
The Project consists of the operation, repair, maintenance, permitting, leasing,
licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographical features, involving negligible or no expansion of existing or former use.
County Clerk
Marin
Attachments
Notice of Exemption
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