De Devils Slide Coastal T vils Slide Coastal Trail Improvements - PowerPoint PPT Presentation

De Devil’s Slide Coastal T vil’s Slide Coastal Trail Improvements Project ail Improvements Project County of San Mateo

Project History  Measure T Nov.1996  Plans and Permits  Task Force meetings  Hired a team  Board support  Budget Devil’s Slide Coastal Trail Improvements Project

Project Overview Devil’s Slide Coastal Trail Improvements Project

Programming and Linkages  Park hours  Multi use trail  Pedestrians  Equestrian  Bicycle  Dogs on leash  Future trail linkages  Caltrans parking lot Devil’s Slide Coastal Trail Improvements Project

Public Comment Process  Received comments in the following topic areas on 30% drawings  Programming and trail linkages  Paving surface durability and safety  Equestrian access  K-rail improvements  Trail safety  Bird protection fencing aesthetics  Today’s presentation of 90% drawings will attempt to address these comments Devil’s Slide Coastal Trail Improvements Project

Next Steps  Transfer title to County (August 2013)  Board of Supervisors approval ( October 1st)  Construction (Winter 2013/ 2014)  Trail opening (March 2014) Devil’s Slide Coastal Trail Improvements Project

Presentation Overview  Pavement, Striping, Roland Haga, P.E, LEED AP Signage & K-rail, and BKF Engineers Other Improvements  Environmental Review Sarah Sutton, ASLA, LEED AP, The Planning Center | DC&E & Overlooks  Maintenance, Schedule Gary Lockman County of San Mateo & Next Steps  Questions Project Team Devil’s Slide Coastal Trail Improvements Project

Overview of Trail Improvements  1.3 Mile Trail  Accessibility  Paving and Striping  K-Rail Improvements  Signage/Interpretation  Overlooks  Accessibility Devil’s Slide Coastal Trail Improvements Project

Paving/ Striping  6’ bike lanes each way  10-12’ pedestrian/ equestrian  Repair and resurface existing asphalt pavement (microsurfacing) Devil’s Slide Coastal Trail Improvements Project

Before K-Rail simulation Devil’s Slide Coastal Trail Improvements Project

 Devil’s Slide Coastal Trail Improvements Project

Microsurfacing  Prevents pavement degradation- seals underlying surface from water and air intrusion  More skid resistant than slurry (micro 0.8 vs. slurry 0.5 friction coefficient)  Longer lifespan than slurry (5-7 years vs. 3-5 years)  Widely used throughout Bay Area and California Devil’s Slide Coastal Trail Improvements Project

Paving and Striping Devil’s Slide Coastal Trail Improvements Project

User Safety  Signage  Speed limit paint on trail pavement and posted on each end  Horse signs posted at each trailhead  K-rails and cable fencing keeping people back from cliff edge  2’ buffer between bike lane and K-rail  Ambassadors- verbal warnings Devil’s Slide Coastal Trail Improvements Project

Signage  Remove existing roadway signage  New regulatory signage (minimize number, and location to protect views)  Interpretive panels Devil’s Slide Coastal Trail Improvements Project

Accessibility Improvements  Bathroom & drinking fountains (north and south trailheads)  Interpretive panels  Overlooks  Observation scopes  ADA access provided to overlooks from parking per County trail standards Devil’s Slide Coastal Trail Improvements Project

K-Rail Improvements  Moving K-rail for smooth trail edge  Removing limited K-rail to expose old rock wall  Power wash and paint tan  Clear debris and weeds along K-rail  Future opportunities artistic teaming/ fundraising Devil’s Slide Coastal Trail Improvements Project

Environmental Review  May 2002 EIS/EIR supplement to 1986 certified by Caltrans  Sept. 2004 California Coastal Commission upheld July 2004 approved CDP  Trail improvements are consistent with CDP  Project will provide memorandum including detailed analysis of biological resources Devil’s Slide Coastal Trail Improvements Project

Potential Wetlands  Four potential Wetlands  Two require K-rail relocation  Supervision of a qualified wetland biologist Devil’s Slide Coastal Trail Improvements Project

Bird Nesting Protection  Trail is directly adjacent to philseu.blogspot.com/2011/ important bird nesting locations  Birds are acclimated to vehicular traffic only  Views of pedestrians may cause nests to be abandoned Bird species include: Peregrine Falcon, Murres,  Bird nest protection is Brandt’s, Pelagic Cormorants, Western Gulls, Pigeon Guillemots, Brown Pelicans critical Devil’s Slide Coastal Trail Improvements Project

Bird Nesting Protection  2011 Common Murre Report recommends Visual visual barrier Barrier  Nesting season January- Sensitive September Nests/ Breeding  Year round Areas fencing option is preferred Devil’s Slide Coastal Trail Improvements Project

Bird Nesting Protection  Movable blinds- view & maintenance concerns, not required due to line of sight  6’ Chain-link fencing- aesthetic concerns sierrafencetx.com  Clear fencing- maintenance concerns www.crl-arch.com  Cable fencing- climbing concerns  Preferred Option- 4’ Tall mesh with vegetation www.yaboofence.com behind Devil’s Slide Coastal Trail Improvements Project

Bird Nesting Similar fence example showing transparency Devil’s Slide Coastal Trail Improvements Project

Bird Nesting Protection Devil’s Slide Coastal Trail Improvements Project

Bird Nesting Protection  4’ tall mesh fencing  Durable vandal proof wire  Small mesh openings and top spikes difficult to climb  See-through transparent panels  Galvanized steel with black powder coating 4’ Omega Secur Fence finish 10 year warranty Devil’s Slide Coastal Trail Improvements Project

Before photo of trail Devil’s Slide Coastal Trail Improvements Project

After photo simulation of trail (BKF) Devil’s Slide Coastal Trail Improvements Project

Bunker  Historic value  Site protection fencing  6’ high mesh fencing and gate Devil’s Slide Coastal Trail Improvements Project

Northern Overlook Devil’s Slide Coastal Trail Improvements Project

Northern Overlook Plan view color Devil’s Slide Coastal Trail Improvements Project

Northern Overlook Plan view color  Added 2 benches and included in wall design Similar approach Devil’s Slide Coastal Trail Improvements Project

Northern Overlook  Replaced chain-link with relocated K-rail for aesthetics Devil’s Slide Coastal Trail Improvements Project

Devil’s Slide Coastal Trail Improvements Project

Northern Overlook Devil’s Slide Coastal Trail Improvements Project

Northern Overlook Devil’s Slide Coastal Trail Improvements Project

Northern Overlook Devil’s Slide Coastal Trail Improvements Project

Material Palette Devil’s Slide Coastal Trail Improvements Project

Material Palette Devil’s Slide Coastal Trail Improvements Project

Interpretive Area Devil’s Slide Coastal Trail Improvements Project

Interpretive Area Devil’s Slide Coastal Trail Improvements Project

Interpretive Area Plan color Devil’s Slide Coastal Trail Improvements Project

Interpretive Area Plan color  Added 3 benches  Added 1 interpretive sign Devil’s Slide Coastal Trail Improvements Project

Interpretive Area Section color Devil’s Slide Coastal Trail Improvements Project

Interpretive Area Devil’s Slide Coastal Trail Improvements Project

Southern Overlook Devil’s Slide Coastal Trail Improvements Project

Southern Overlook Devil’s Slide Coastal Trail Improvements Project

Southern Overlook Plan color Devil’s Slide Coastal Trail Improvements Project

Southern Overlook Plan color  Moved observation scopes  Added 2 interpretive signs Devil’s Slide Coastal Trail Improvements Project

Southern Overlook Devil’s Slide Coastal Trail Improvements Project

Southern Overlook Devil’s Slide Coastal Trail Improvements Project

Future Maintenance  Bird monitoring  Wetland monitoring  Pampas grass removal  Rock removal  Rock slide repair (funding and expectations) Devil’s Slide Coastal Trail Improvements Project

Questions/ Comments  Gary Lockman County of San Mateo  Roland Haga, P.E, LEED AP BKF Engineers  Sarah Sutton, ASLA, LEED AP, The Planning Center | DC&E Devil’s Slide Coastal Trail Improvements Project

De Devil’s Slide Coastal T vil’s Slide Coastal Trail Improvements Project ail Improvements Project County of San Mateo