Open Space District's Road and Trail Management Plan

8 Documents in Project

Summary

SCH Number
2011012080
Lead Agency
Marin County
Document Title
Open Space District's Road and Trail Management Plan
Document Type
FIN - Final Document
Received
Present Land Use
Applies to 34 preserves with zoning and plan designations mostly for open space, with some areas zoned for residential

Document Description
MCOSD proposes to implement trail and drainage improvements to the Bob Middagh and Gas Line Trails in the Alto Bowl Open Space Preserve. The proposed realignments, drain dips, new culverts, change of use, and other actions to protect the environment and improve the user experience would increase the sustainability of the trail consistent with the Road and Trail Management Plan (RTMP) policies, best management practices (BMPs), and trail design standards. These measures would substantially reduce, over the existing trails, impacts from erosion and runoff into nearby drainages, thereby reducing sedimentation into the Richardson Bay watershed. Modifications to the Bob Middagh Trail include realignment of 1,952 feet of new trail, decommissioning of 938 feet of existing trail, installation of four sloped climbing turns, installation of three rock retention walls, construction of one rock armor swale 20 feet wide by ten feet long, replacement of two failing culverts, and changing the use designation to allow bicycles. Improvements to the Gas Line Trail include constructing 1,610 feet of new contoured trail at an average seven percent grade, installing appropriate dewatering measures for a more sustainable design and reduce potential sediment loading to streams, realigning 480 feet of the existing Horse Hill Trail, decommissioning 1,554.2 feet of existing social trails, and incorporating other actions to protect the environment and improve the user experience. MCOSD would build the new trail using the RTMP's policies, design standards, and BMPs.

Contact Information
James Raives
Marin County Open Space District
3501 Civic Center Drive, Room 260
San Rafael, CA 94903

Phone : (415) 473-3745

Location

Cities
San Rafael
Counties
Marin
Regions
Countywide
Cross Streets
County Wide
Total Acres
15113.28
State Highways
Hwy 101, 1, I-580
Airports
Marin County & San Rafaels
Waterways
Novato, Miller, Corte Madera, San Geronimo Creeks

Notice of Completion

Development Type
Recreational (Open Space areas available for outdoor rec.)
Local Action
Master Plan
Project Issues
Drainage/Absorption Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Minerals Noise Population/Housing Balance Public Services Recreation/Parks Soil Erosion/Compaction/Grading Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Land Use Cumulative Effects Other Other Issues: Utilities & service

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

Download CSV New Search Print