BEACONS BEACH IMPROVEMENTS 18-185 Design Review October 15, 2018 1 - - PowerPoint PPT Presentation

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BEACONS BEACH IMPROVEMENTS 18-185 Design Review October 15, 2018 1 - - PowerPoint PPT Presentation

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BEACONS BEACH IMPROVEMENTS 18-185 Design Review October 15, 2018 1 WELCOME WEL COME AND AND INTR INTRODUC ODUCTIO TIONS Facilitator Jerry Harmon City of Encinitas Brenda Wisneski, Development Services Director Ed

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BEACON’S BEACH IMPROVEMENTS

18-185 Design Review

October 15, 2018

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Facilitator

  • Jerry Harmon

City of Encinitas

  • Brenda Wisneski, Development Services Director
  • Ed Wimmer, Interim City Engineer
  • Stephanie Kellar, Senior CIP Engineer
  • Jennifer Campbell, Director of Parks, Recreation & Cultural Arts
  • Annette Saul, Parks Operations Manager
  • Michael Stein, Fire Chief
  • Larry Giles, Lifeguard Captain
  • Andrew Maynard, Associate Planner

AECOM

  • Dan Lee, Project Manager
  • David Schug, Principal Geologist
  • Steven Fitzwilliam, Geotechnical Engineer

Schmidt Design Group, Inc.

  • Glen Schmidt, Principal
  • Chris Tiffany, Project Manager

Legal Counsel - CEQA

  • Mike Hogan

WEL WELCOME COME AND AND INTR INTRODUC ODUCTIO TIONS

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AGEND GENDA

I. Project history and previous alternatives II. What we have heard

  • III. Parking

IV. Current alternatives V. Break-out Group Discussions:

  • Geology and Previous Concepts
  • Design Alternatives

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Leucadia St Leucadia State te Beac Beach Gen h Gener eral al Plan, Plan, 1984 1984

  • Acknowledges that a

landslide exists at Beacon’s Beach

  • The landslide has been

active since November 1982

PR PROJE OJECT CT HI HIST STOR ORY

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Concrete Stairway at Beacon’s Beach, 1972

PR PROJE OJECT CT HI HIST STOR ORY

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BEACON’S ACTIVE LANDSLIDE

Mapped limits of Active Landslide

7ft 27ft

Approximate Depth

  • f Landslide

Estimated Failure Plane

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BEACON’S CR CROSS SS SEC SECTIO TIONS

Landslide Depth 27 ft. Landslide Depth 7 ft.

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  • Landslide shallowest on south end
  • Minimizes remediation necessary for

long-term access

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AL ALTER TERNATIV TIVES ES EV EVAL ALUATED TED SIN SINCE CE 2003 2003

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Schmidt Design Group 2003 Beacons Beach Improvements Alternative - 2003

  • Buttress seawall solution with slope re-grading and trail
  • Approved by Encinitas City Council
  • Rejected by State Parks

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PRE PREVI VIOU OUS S AL ALTER TERNATIV TIVES ES: : 2003 SEAWALL 2003 SEAWALL

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Leucadia St Leucadia State te Beac Beach Gen h Gener eral al Plan, Plan, 1984 1984

Page 14, Bluff Fortification “Policy: The state-owned cliff face at Leucadia State Beach shall not be fortified with retaining walls. ..... Seawalls shall not be constructed at the state beach.”

PRE PREVI VIOU OUS S AL ALTER TERNATIV TIVES ES: : 2003 SEAWALL 2003 SEAWALL

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PRE PREVI VIOU OUS S AL ALTER TERNATIV TIVES ES- UR URS S STU STUDY Y (2014) (2014)

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Alternative 4C, URS 2015

  • Approx. location of 2003 seawall design
  • Approx. location of erodible

buttress in Alternative 4C, 2015 (sand at approx. 12’ MSL)

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PRE PREVI VIOU OUS S AL ALTER TERNATIV TIVES ES: : 2015 A 2015 ALTER TERNATIV TIVE E 4C 4C ER EROD ODIB IBLE LE BUT UTTRE TRESS SS

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PREVIO PREVIOUS A US ALTE TERN RNATIVES: TIVES: 2015 2015 AL ALTERN TERNATIV TIVE 4C E 4C E EROD ODIB IBLE LE BUTTR UTTRESS ESS

Steepened Erodible Toe

  • Stabilizes Landslide - Stabilizes Upper Bluff

From “Alternative 4C- Slope Rebuilding with Erodible Toe” URS September 4, 2015

FS= 1.6

Soil Cement Compacted Fill Soil

FS= 1.48

Soil Cement Compacted Fill Soil

1:1 (H:V) Erodible Toe 0.5:1 (H:V) Erodible Toe

Raised top of soil cement to +24 MSL

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PR PREV EVIO IOUS S AL ALTER TERNATIV TIVES: ES: CO COSTS STS OF F BL BLUFF FF AR ARMOR MORIN ING

2015 California Coastal Armoring Report

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Coastal Commission Briefing August 2, 2018

Shoreline protective devices (SPDs) can adversely affect:

  • public access,
  • recreation, and
  • shoreline ecology

SPD’s:

  • take up usable space on

beaches,

  • reduce sand supply
  • limit the natural adaptive

capacity of beaches to adjust to sea level rise, storms events, and other perturbations

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PRE PREVI VIOU OUS S AL ALTER TERNATIV TIVES ES AL ALTER TERNATIV TIVE E 4C 4C ER EROD ODIB IBLE LE BUT UTTRE TRESS SS

Agency Review Comments in 2017:

  • Requires General Plan Amendment from State Parks
  • Not supported by State Parks Staff
  • Not supported by Coastal Commission Staff
  • Not supported by Environmental organizations

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Existing Trail

  • The trail is a cherished part of Beacon’s history and

character and it should remain. Maintenance of Trail

  • Concern over current level of trail maintenance.

WHA WHAT T WE’VE HEARD – BEACON’S MEE MEETINGS, TINGS, HEARING HEARINGS, S, AND AND CORR CORRESPON ESPONDE DENC NCE

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  • City is not proposing to remove the trail
  • Preparing a comprehensive plan for improved maintenance

WHAT WE’VE HEARD – MAIN MAINTEN TENANCE ANCE OF OF TRA TRAIL IL

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Parking

  • Concern over losing parking spaces and narrowing lanes.

WHAT WE’VE HEARD – PAR ARKI KING NG

Existing Condition:

  • 39 spaces (including 1 accessible space & emergency vehicle parking)
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WHAT WE’VE HEARD - PAR ARKI KING G

Previous design:

  • 27 spaces incl. 1 accessible space & emergency parking
  • Loss of 12 spaces

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Potential New Parking Design Proposal Following 9/17/18 Meeting

  • 33 spaces incl. 2 accessible spaces, 1 emergency parking & 1 turn around space
  • Striping to be incorporated to address bike circulation
  • Loss of 6 spaces
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  • Comment: Believe the landslide hazard has been
  • verstated and no stabilization is required for the trail

to remain.

  • Comment: Feel a trail solution is available that can

be permitted that addresses the geologic hazards.

  • Comment: If a stair access is necessary, it should:
  • Be soft aesthetically, not concrete
  • Follow the bluff landform, not span above it

WHAT WE’VE HEARD- BEA BEACH CH ACC CCESS ESS SO SOLUT UTIO ION

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WHAT WE’VE HEARD- THE TRAIL WILL REMAIN OPEN

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WHAT WE’VE HEARD- LOW PROFILE WOOD STAIRWAY

San Elijo State Beach Example Typical landing elevation view

Low profile Wood Stairway Wood Posts Concrete Foundations

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Plan View

BEACON’S BEACH IMPROVEMENTS NEW ALTERNATIVE A

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NEW ALTERNATIVE A

Simulation, North View

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NEW ALTERNATIVE A

Simulation, View from Parking Lot Proposed low profile staircase constructed of wood. Concrete foundations are below grade.

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NEW ALTERNATIVE A

Simulation, View from Parking Lot

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NEW ALTERNATIVE B

Plan View

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NEW ALTERNATIVE B

Simulation, North View

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NEW ALTERNATIVE B

Simulation, View from Parking Lot

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NEW ALTERNATIVE B

Soil Cement colored and textured to blend with adjacent bluff Upper portion of Soil Cement covered with soil and vegetated On grade steps in lower portion of Soil Cement

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BEACON’S BEACH IMPROVEMENTS DESIGN CHARACTER IDEAS

On Grade Steps (located on soil cement)

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BEACON’S BEACH IMPROVEMENTS DESIGN CHARACTER IDEAS

Wood Stairway

San Elijo State Beach Example

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BEACON’S BEACH IMPROVEMENTS DESIGN CHARACTER IDEAS

Handrail Detail

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BEACON’S BEACH IMPROVEMENTS DESIGN CHARACTER IDEAS

42” Railing

Wood only Wood and stainless steel cables

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BEACON’S BEACH IMPROVEMENTS DESIGN CHARACTER IDEAS

Bike Racks

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BEACON’S BEACH IMPROVEMENTS DESIGN CHARACTER IDEAS

Benches

Benches Created by local Artists Wood or Memorial Benches

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BEACON’S BEACH IMPROVEMENTS, DESIGN CHARACTER OPTIONS

Artful columns at entry

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BEACON’S BEACH IMPROVEMENTS

Alternative A Simulation, North View Alternative B Simulation, North View

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EN ENVI VIRON ONME MENT NTAL AL REV REVIEW IEW

CEQA Exemptions

  • Public Resources Code section 21080(b)(2) and

(4) and section 15269 (b) and (c) of the CEQA Guidelines- exempts emergency repairs to public facilities necessary to maintain service essential to public safety and actions necessary to prevent

  • r mitigate an emergency.
  • 15311(c)- exempts the placement of a seasonal or

temporary lifeguard tower.

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 Pop-Up Event Sept 15th  Community Meeting September 17, 2018

  • Tonight's Meeting: October

15, 2018

  • Permitting
  • Planning Commission - Design

Review Permit

  • Coastal Commission - Coastal

Development Permit

  • State Parks
  • Construction
  • November 2019 - May 2020

PR PROJECT OJECT SCHEDULE SCHEDULE

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WORKSHOP ORKSHOP BR BREAK EAK-OUT GR OUT GROUPS OUPS

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Shoreline protective devises and their effects on beaches and coastal

  • process. Coastal Commission Staff Report, August 2, 2108

“.” Coastal Act Section 30253, which covers new development and steps to avoid the need for future protection measures; and Section 30235, provides for the specific, limited situations in which shoreline protection must be permitted.

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BEACON’S BEACH IMPROVEMENTS, ALTERNATIVE B Approximate limits of Soil Cement

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ABOUT SOIL CEMENT “ARTIFICIAL SANDSTONE”

  • Used for slope protection in

wide range of environments

  • Mixture of silty/clayey sand

with small percentage Portland cement

  • Design strength to match

Ardath Shale

  • Placed and compacted in

thin layers

  • Colors would mimic natural

materials

Simulation of Soil Cement Shore Protection at Beacon’s Beach

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WHAT WE’VE HEARD- FOLLOW THE BLUFF LANDFORM

Simulation of previous July 2018 alternative, View from Parking Lot Larger structure, constructed mostly of concrete.