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Devil’s Slide Tunnel Project: Home of the California red-legged frog

Devil’s Slide Tunnel Project: Home of the California red-legged frog. Richard Vonarb District 4 Office of Biological Science and Permitting California Department of Transportation. California red-legged frog Rana draytonii. Project Location. Project Overview. EXISTING HIGHWAY 1

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Devil’s Slide Tunnel Project: Home of the California red-legged frog

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  1. Devil’s Slide Tunnel Project:Home of the California red-legged frog Richard Vonarb District 4 Office of Biological Science and Permitting California Department of Transportation

  2. California red-legged frog Rana draytonii

  3. Project Location

  4. Project Overview EXISTING HIGHWAY 1 RIGHT-OF-WAY TO BE RELINQUISHED TO THE COUNTY OF SAN MATEO NEW ROADWAY SOUTH PORTAL NORTH PORTAL BRIDGE TUNNELS SOUTH ROCK CUT DISPOSAL AREA / OMC SITE

  5. EXISTING HIGHWAY 1 TO BE RELINQUISHED TO SAN MATEO COUNTY NEW ROADWAY NORTH PORTAL SOUTH PORTAL SOUTH PORTAL TUNNELS SOUTH ROCK CUT BRIDGES DISPOSAL SITE / OMC SITE BRIDGES MITIGATION SITE Project Summary • Dual Tunnels – 4,200 feet long • Tandem Bridges – 1,000 feet long • Disposal Site – 520,000 m3 capacity • Operations and Maintenance Center (OMC) • Wetland Mitigation Site – 5 ½ acres • Habitat Restoration of Construction Areas and Disposal Site

  6. Biological Issues On-going Biological Tasks: • Construction monitoring • Permit compliance • Attendance at project team meetings • Biological evaluation and permit amendments for CCO designs • Long-term mitigation monitoring • Evaluate public access impacts • Agency coordination: California red-legged frog 1 Photo Credits: 1-K. Wiseman; 2 – R. Wilming; 3 – R. Aramayo San Francisco dusky-footed woodrat house Anna’s hummingbird chicks 2 Vegetation monitoring Peregrine falcon 3

  7. Exclusion Fencing

  8. Bridge: September 2008

  9. Bridge Site Overview

  10. Bridge Site Overview

  11. South Portal, Disposal Site, OMC

  12. Peregrine Eyrie and South Portal South Portal State Route 1 Devil’s Promontory Approximate Location of Peregrine Falcon Nest Ledge

  13. Disposal Site and OMC Overview

  14. Charthouse Mitigation Site: September 2008

  15. Kevin Wiseman, GANDA • California red-legged frog (Rana draytonii) • Status: Federal threatened • Existing ponds at Shamrock Ranch were protected. • New breeding pond created at Shamrock Ranch. • Frogs excluded from the jobsite to the degree possible with fences and traps. • Biologists monitor the job site daily to capture any frogs that enter the site.

  16. Peregrine falcon (Falco peregrinus) • Status: State Endangered • Nests on Devil’s Promontory near the South Portal. • Caltrans coordinated with the California Department of Fish and Game. • Caltrans is monitoring the pair during the breeding season.

  17. USFWS DLS American robin Ross Wilming, GANDA Anna’s hummingbird • Nesting birds • Status: Migratory Bird Treaty Act • Prior to vegetation clearing, biologists survey the work area for active nests. • If active nests are found, buffer areas are implemented, and clearing is rescheduled until the young have left the nest.

  18. San Francisco dusky-footed woodrat (Neotoma fuscipes annectans) • Status: California Species of Special Concern • California Department of Fish and Game directed Caltrans to dismantle the • woodrat houses located within the project site during the non-breeding season. • Woodrat houses protected within Environmentally Sensitive Areas.

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