spy pond 30% design 171114 - Arlington, Massachusetts

Spy Pond Edge & Erosion Control 30% DesignTown of Arlington November 14, 2017

Spy Pond Edge & Erosion Control 30% DesignTown of Arlington

Agenda1. Introductions

2. Project Schedule

3. Project Goals

4. Key Plan

5. Restoration Strategy and Zones

6. Existing Conditions and Proposed Design• Spy Pond Park• Scannell Field• Boys and Girls Club• Spring Valley Street

6. Your Questions and Comments

Tonight’s Agenda

Spy Pond Edge & Erosion Control 30% DesignTown of Arlington Project Team

Spy Pond Project Team:

Town of Arlington Working Group:

Lela Shepherd, Conservation Agent, [email protected]

Bill Copithorne, Assistant Town Engineer, [email protected]

Jon Marshall, Director of Recreation, [email protected]

Cathy Garnett, Conservation Commission

Leslie Mayer, Park and Recreation Commission

Don Vitters, Park and Recreation Commission

Karen L. Grossman, Friends of Spy Pond Park

Hatch Chester:Duke Bitsko, Principal‐in‐Charge, [email protected]

Hilary Holmes, Project Manager, [email protected]

Ginna Johnson, Landscape Architect, [email protected]

Spy Pond Edge & Erosion Control 30% DesignTown of Arlington Project Schedule

Tonight’s MeetingNovember 14, 2017

Spy Pond Edge & Erosion Control 30% DesignTown of Arlington Project Goals

Phase 1 (2016)1. Existing Shoreline Categorization Report2. Public Meetings3. Working Group Meetings4. Preferred Concept Plans5. CPA Funding Approved for Design and Construction


Phase 2Site Evaluation1. Resource Area Delineation

– Bank, BVW2. Botanical Survey

– Engelmann’s Umbrella Sedge3. Invasive Species Identification4. Updated Existing Conditions Plan

Working Group Meeting1. Review Site Evaluation2. Revised Design Concepts for Access at Spy Pond, Scannell

Field, Boys & Girls Club, and Spring Valley Street


Project Goals1. Preserve, stabilize & strengthen the pond’s banks2. Control bank erosion 3. Protect & enhance wildlife habitat 4. Control access to prevent unauthorized paths5. Encourage commitment from constituency groups6. Increase quality of water & opportunity for water use7. Promote stormwater infiltration along the shoreline8. Implement environmental education

Spy Pond Edge & Erosion Control 30% DesignTown of Arlington Location Plan

BOYS AND GIRLS CLUB

SPRINGVALLEY STREET

SPY POND PARK

SCANNELL FIELD


Restoration Strategy

Invasive RemovalsSoil and Planting Restoration:

• Zone 1: Shoreline Stabilization• Zone 2: Bordering Vegetated Wetland Enhancement Planting• Zone 3: Riparian Buffer Zone Enhancement Planting• Zone 4: Riparian Woodland Enhancement Planting

FencingSignage

Restoration Strategy


Invasive Plant Management Strategy1. Coordinate Conservation Commission approval for removal method and

species.2. Woody Trees, Shrubs and Vines:

• Saplings (up to 1”) – mechanical removal with Weed Wrench• Mature Plants ‐ cut flush to ground and dispose legally off‐site

(landfill).• Suckering Varieties – cut flush and apply approved herbicide.*

3. Herbaceous Plants:• Pull plants and roots by hand and dispose legally off‐site (landfill).• Seed and stabilize with native mix appropriate for plant community.

4. Japanese Knotweed Colonies (Manual vs. Chemical Method):• Cut stems to ground twice/year and dispose legally off‐site (3‐7 years).• Cut stem herbicide treatment once/year (repeat second year).

5. Establish native plant communities.6. Monitor and manage all removal areas for 3 years (minimum).* Requires Licensed MA applicator

Restoration Strategy: Invasive Species


Zone 1: Shoreline Stabilization

Restoration Strategy: Zone 1

1. Install turbidity curtain2. Install coir fascines3. Place soil and regrade behind coir fascines4. Install planting



4 Treatments:


1. 2. 3.




1. 2. 3.


Zone 2: Bordering Vegetated Wetland Enhancement Planting


1. Protect resource and endangered species habitat2. Remove targeted invasives3. Scarify compacted areas (footpaths)4. Top‐dress with weed‐free topsoil5. Install seed and tackifier6. Install plugs and live stakes in hydric soils


Zone 2: Bordering Vegetated Wetland Enhancement Planting



Zone 3: Riparian Buffer Zone Enhancement Planting


1. Remove invasives2. Scarify compacted areas (footpaths)3. Top dress with weed‐free topsoil4. Install seed and tackifier5. Install plugs 6. In coordination with Working Group, install live stakes

in groups to frame views & improve habitat.


Zone 3: Riparian Buffer Zone Enhancement Planting



Zone 4: Riparian Woodland Enhancement Planting


1. Remove invasives2. Scarify compacted areas (footpaths)3. Top dress with weed‐free topsoil4. Install seed and tackifier5. Install native woodland groundcovers 6. Install live stakes to improve habitat7. Install tree tubelings to restore understory & canopy


Zone 4: Riparian Woodland Enhancement Planting


Spy Pond Edge & Erosion Control 30% DesignTown of Arlington Restoration Strategy: Fencing

North Beach Access Point


Goose Exclusion Fence Establishment Fence

Restoration Strategy: Fencing

Spy Pond Edge & Erosion Control 30% DesignTown of Arlington Restoration Strategy: Signage

Spy Pond Edge & Erosion Control 30% DesignTown of Arlington Existing Conditions

Spy Pond Park‐North

A.A. Reznicek

Boat Ramp

North Beach


Invasive Species

Invasive Species

Japanese knotweed colony

Spy Pond Park North

Ailanthus volunteers

3 to 8” DBH = 9>8 to 20” DBH = 1

>20” DBH = 0Total 10


Spy Pond Park‐South

South Beach

Invasive Species:3 to 8” DBH = 0

>8 to 20” DBH = 0>20” DBH = 0

Total 0


Scannell Field


Scannell FieldInvasive Species

oriental bittersweet at shoreline oriental bittersweet canopy Norway maple

Invasive Species

3 to 8” DBH = 19>8 to 20” DBH = 7




Proposed Design

Boat Ramp

North Beach



Proposed Design

Detail at Boat Ramp



Proposed Design

South BeachProposed Water Access



Proposed Design


Scannell Field

Proposed Design

Bioretention Basin

Water Access

OverlookIce House Interpretation

Loop PathL.O.W. this Phase


Scannell Field

Proposed Design

Biorentention Basin

Water Access OverlookPorous Path


Scannell Field

Proposed Design


Scannell Field

Proposed Design


Boys and Girls Club

Existing Conditions

Existing Footpath

Boys and Girls ClubExisting Parking


Invasive SpeciesBoys and Girls Club

oriental bittersweet sycamore maple & Norway maple

Invasive Species

3 to 8” DBH = 16>8 to 20” DBH = 7



Boys and Girls Club

Proposed Design

Loop Path

Boys and Girls Club

Loop Path

Upland Meadow

Guardrail withLawn Edge


Boys and Girls Club

Proposed Design


Boys and Girls Club

Proposed Design


Spring Valley Street

Existing Conditions


Invasive SpeciesSpring Valley Street

Ailanthus, multiflora rose, Euonymus sycamore maple, Norway maple, Ailanthus

Invasive Species

3 to 8” DBH = 8>8 to 20” DBH = 5



Spring Valley Street

Proposed Design

Upland MeadowBioretention Basin

PathCanoe Storage

Boulder Boat Launch

Woodland Restoration

Spy Pond Edge & Erosion Control 30% DesignTown of Arlington Your Vision for Spy Pond

spy pond 30% design 171114 - Arlington, Massachusetts

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