Community Advisory Group • Barrier Update • Haul Road Construction

Raymark Industries, Inc. Superfund Site Stratford, CT Jim DiLorenzo, EPA February 26, 2020

Barrier Update

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Ba

rriers

1 2

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Barriers 1 and 3

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Durisol® is the proprietary name of

a durable, lightweight and

cementitous

composition. It is made of

chemically neutralized and

mineralized organic

softwood shavings which are

specially processed to an

acoustically engineered size and

are bonded together under

pressure with Portland cement.

The material is sound-absorbent,

noncombustible, vermin and rot

proof.

Durisol® is self-draining and highly

resistant to weather exposure

including: freeze-thaw, road de-

icing chemicals and fungicides.

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Model UNC-XT-1

TAN

Outdoor Sound Curtain

UNC-XT-1 offers the benefits of both a noise barrier and

a sound absorber composite in one product. This UNC

product consists of an exterior grade, UV resistant heavy

duty faced quilted fiberglass absorber bonded to a one

pound per sq. ft. reinforced loaded vinyl barrier. The

heavy duty facing is a 10 oz. per sq. yd. vinyl coated

polyester (VCP) quilted to the sound absorber rather than

the standard 4 oz. facing.

• STC 29 Rating, NRC .65

Barrier 2

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Caissons

Wind Load

Depth

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Barrier #1 Entrance at Longbrook Ave

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Behind 44 Cottage Pl.

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Behind 54 Cottage Pl.

• Instantel Blastmate III

• Placed approximately 80

feet from active work area

• Trigger to stop work is 0.50

in/sec

• Measures at 0.20 in/sec or

greater

• All readings to date below

0.20 in/sec

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Drainage Between

Barriers #1 and #2

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Haul Road Update

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Ha

ul R

oa

d

Mulch Relocation

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• "clean" mulch/wood waste = 4,500 CY

• Soil/mulch interface to be segregated = 1,000 CY

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Excavation and Consolidation Schedule Update

• November – Resumed home inspections

• December 2 – Tantara re-mobilized to the Site

• Dec 2019 to March 2020 – Construct Barrier #1

• March to August 2020 – Construct Barriers #2 and #3

• April to August 2020 – Construct Haul Road

• June to September 2020 – Install plantings along barriers

• Summer 2020 - Excavate from four OU6 properties 1. Wooster Park

2. 380 E. Main Street

3. 200 Ferry Boulevard

4. Vacant Lots behind 326 Ferry Blvd

• 2020/2021/2022 – OU3/OU6 digging

• 2022/2023 – Consolidation and Landfill Cap Complete 22

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OU4 Parking Lot (across from DPW)

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DPW

OU4

Ballfiled

Contract Plating

Existing Aerial Image

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Conceptual Land Use Plan

Former

OU4

Ballfiled DPW

Former Contract Plating Site

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Stormwater System

Upgrades

DPW Ashcroft

OU4 Ball Field

• Vita Nuova 2015 Conceptual Land Use

Study for reuse of Contract Plating and

OU4 Ball Field

• Conceptual Land Use Plan incorporated

into 2016 ROD.

• Stormwater and OU4 design to support

reuse of consolidation area.

• Haul road relocated to abut railroad and

provide 4 ft cap over impacted soil.

• OU4 redevelopment limited by

consolidation area grading and

stormwater management

• Potential OU4 building for use by DPW

to store equipment.

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2015 Conceptual Land Use Plan

OU4 Ball Field

• 2016 ROD restricts height and grade of

consolidation area cover.

• Basis of Design prepared to determine

final surface conditions.

• Town to verify proposed building design

and foundation loading.

• Design retains outside vegetative

border and barrier wall along OU4

property line.

• Restricted access via Frog Pond Lane

and Longbrook Ave.

• OU4 geotechnical borings to bedrock

completed Jan 2020; foundation design

ongoing.

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OU4 Conceptual Design and Building

Footprint

Pre-Construction Sampling

• April-June 2020 Seed and OU3/OU6 Properties

• Define horizontal boundary of soil removal; 30-foot

spacing of samples (using historic data)

• Expedite soil removal and restoration

• Define final volume of soil consolidation at ballfield for

construction.

• 3 Properties require no sampling

• 16 Properties require limited sampling (avg of 6 per

site)

• 6 Properties require more extensive sampling:

– OU3 Upper Ferry Creek top of bank (I-95 to East

Broadway)

– Beacon Point and Lockwood Ave (tidal marsh)

– 250 East Main Street (Ashcroft Mfg – rear)

– Wooster Park

– Third Avenue (residential property - horizontal and

vertical per ROD)

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Property Rights of Entry

• Rights of Entry for Pre-Construction Sampling.

– Using existing Rights of Entry for investigation.

– 15 additional Rights of Entry required for limits of

waste extending on to abutting properties.

• Rights of Entry for Seed Project remediation.

– Required for 190/200 Ferry Blvd, Vacant Lot

behind 326 Ferry Blvd and 380 East Main St;

Wooster Park completed.

• Rights of Entry for OU3 and OU6 remediation

– Meeting with property owners individually to

review plans and any concerns (e.g., schedule,

restoration, etc.) to be addressed prior to

remediation.

• Will work with Town to coordinate meetings with

neighborhood groups prior to construction.

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