0088-0200_Task_710_Hazardous_Materials_Investigation_Report.pdf

PDF 6 MB Posted

Attached to
Replace Noise Barrier/Guardrail on Route 72 EB in the City of New Britain
Solicitation number
0088-0203
Issued by
Hartford County, Connecticut

About this file

Hazardous Materials Investigation Report Summary

This is a Hazardous Materials Investigation Report prepared by TRC Environmental Consultants for the Connecticut Department of Transportation (ConnDOT) regarding the Route 72 Noise Barrier Replacement project in New Britain, Connecticut (Project No. 88-200, ConnDOT Assignment No. 524-8381). The investigation was conducted on existing noise barriers located on Route 72 eastbound and westbound between mile markers 1.44 and 1.76, extending onto Exit 2 ramps at Corbin Avenue and terminating at the bridge over Route 555. The preliminary design report indicates the existing timber noise barriers, originally installed in 1989, are approximately 1,680 feet in length on the eastbound side and 1,010 feet on the westbound side, with an Average Daily Traffic count of 34,200 vehicles per day eastbound and 32,100 westbound. The project involves complete replacement of the deteriorated noise barriers and MASH-compliant guiderails with proposed barriers to remain largely in the same location as existing structures, except for a shift away from Hamilton Street on the eastbound side to accommodate future Beeline Trail construction.

The hazardous materials investigation identified RCRA hazardous waste in the form of arsenic (ranging from 5.0 mg/L to 9.4 mg/L) in pressure-treated wood support posts of the noise barrier wall based on TCLP testing performed by Complete Environmental Testing (CET) in January and March 2025. The pressure-treated slats of the noise barrier wall were found to be non-hazardous. Lead-based paint analysis using X-Ray Fluorescence (XRF) testing detected no lead in painted surfaces on wood panels or pillars. Asbestos bulk analysis using polarized light microscopy confirmed that black foam sound padding located between wood panels and pillars does not contain asbestos. Metal guiderails and concrete barriers, approximately 38 lamp posts on Route 72 Eastbound and 4 on Route 72 Westbound (all containing LED fixtures with no regulated/hazardous materials), and other site features showed no suspect hazardous materials. The investigation confirmed no bloodborne pathogen concerns, bird/pigeon guano accumulations, or other regulated hazardous waste requiring special handling during demolition and barrier replacement operations.

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Text version

21 Griffin Road North Windsor Connecticut 06095 • Phone. 860.298.9692 • Fax. 860.298.6399

May 14, 2025

Mr. Jason Coite, P.E.

Principal Engineer Division of Environmental Compliance Bureau of Engineering and Construction State of Connecticut Department of Transportation 2800 Berlin Turnpike, P.O. Box 317546 Newington, CT 06131-7546

Attention: Daniel Imig, P.E. / Benjamin Silverman

Subject: On-Call Asbestos, Lead, Air Quality & Demolition Compliance Agreement No. 10.04-02 (23) HazMat Inspection – Route 72 Noise Barrier Replacement. Westbound Exit 2 and Eastbound, New Britain, CT ConnDOT Assignment No. 524-8381 ConnDOT Project No. 88-200 TRC Project No. 501871.8381.0710

Dear Mr. Coite:

TRC conducted a limited hazardous materials site investigation associated with the noise barrier replacement project along Route 72 West, Exit 2 and Route 72 East in New Britain, Connecticut.

Results from TCLP hazardous waste characterization sampling for RCRA 8 metals identified hazardous leachable levels of arsenic (>5.0 mg/L) present in the pressure treated wood support posts of the wall, and therefore, they are characterized as CTDEEP/RCRA hazardous waste. The pressure treated slats of the noise barrier wall were also sampled for TCLP RCRA 8 metals and were found to be non-hazardous. The black foam sound padding found between wood panels and pillars was sampled and does not contain asbestos. On-site XRF testing indicates no lead present in painted surfaces on the wood noise barrier panels or pillars. No suspect hazardous materials were identified associated with the metal guiderails or concrete barriers projected to be impacted by the noise barrier replacement project. Approximately 38 lamp posts were identified along Route 72 Eastbound and 4 lamp posts along Route 72 Westbound. Each of them appeared to contain LED light fixtures, which do not contain regulated/hazardous materials. No other regulated or hazardous waste, bloodborne pathogen (BBP) concerns, or bird/pigeon guano accumulations were identified near the noise barriers.

Laboratory results, XRF data, TRC Mobile Data Solutions Field Report, and related project information are attached.

If you have any questions, please contact TRC at (860) 298-9692.

Yours Truly, TRC

Stephen R. Arienti, CHMM Erik R. Plimpton, P.E., CHMM, CMC Office Practice Leader – Program Manager Vice President – Engineer in Charge

Lead Based Paint Measurement Summary Table

Device(s):Niton XLP301-A (Serial #22323) X Ray Fluorescence (XRF) Spectrum Analyzer

Site: Route 72 Noise Barrier, New Britain, CT

Project #:501871.8381.0710

Date(s):January 16th, 2025

Inspector:Hugh Crundwell, Alex LeMay

Number Room Side StructureFeature Material Color Condition ReadingPrecision Depth Duration Date/Time

(mg/cm2)(mg/cm2) Index (sec)

1 ShutterCal 110.19 1/16/2025 11:04

2 0.0 Calibration < LOD 0.03 1 5.07 1/16/2025 11:09

3 3.7 Calibration 3.7 0.6 1.33 3.2 1/16/2025 11:09

4 1.5 Calibration 1.5 0.4 1.11 1.88 1/16/2025 11:09

5 1.5 Calibration 1.6 0.2 1.19 5.88 1/16/2025 11:10

6 Sound Barrier 72W Wall -- Wood Green DEFECTIVE < LOD 0.03 1 5.33 1/16/2025 11:12

7 Sound Barrier 72W Wall -- Wood Green DEFECTIVE < LOD 0.03 1 5.88 1/16/2025 11:13

8 Sound Barrier 72W Wall -- Wood Green DEFECTIVE < LOD 0.03 1 4.26 1/16/2025 11:13

9 Sound Barrier 72W Wall Post Wood Green DEFECTIVE < LOD 0.03 1 4.01 1/16/2025 11:14

10 Sound Barrier 72W Wall Post Wood Green DEFECTIVE < LOD 0.03 1 7.47 1/16/2025 11:14

11 Sound Barrier 72E Wall Wall Wood Black DEFECTIVE < LOD 0.03 1 5.04 1/16/2025 11:34

12 Sound Barrier 72E Wall Wall Wood Black DEFECTIVE < LOD 0.03 1 4.56 1/16/2025 11:34

13 Sound Barrier 72E Wall Wall Wood Pink DEFECTIVE < LOD 0.03 1 5.33 1/16/2025 11:35

14 Sound Barrier 72E Wall Wall Wood Green DEFECTIVE < LOD 0.03 1 4.28 1/16/2025 11:35

15 Sound Barrier 72E Wall Wall Wood Green DEFECTIVE < LOD 0.03 1 3.99 1/16/2025 11:37

16 0.0 Calibration < LOD 0.03 1 5.88 1/16/2025 11:42

17 3.7 Calibration 3.6 0.4 1.29 3.99 1/16/2025 11:42

18 1.5 Calibration 1.6 0.1 1.19 6.94 1/16/2025 11:42

80 Lupes Drive

Stratford, CT 06615

Tel: (203) 377-9984

Fax: (203) 377-9952 e-mail: cet1@cetlabs.com

Client: Mr. Stephen Arienti

TRC Environmental Consultants

21 Griffin Rd., North

Windsor, CT 06095

Analytical Report

CET# 25C0189

Report Date:March 13, 2025

Project: Route 72, New Britain, Sound Barrier

Project Number: 501871.8381.0710

Pennsylvania Certificate: 68-02927Massachusetts Laboratory Certificate: M-CT903

Connecticut Laboratory Certificate: PH 0116 New York NELAP Accreditation: 11982

Rhode Island Laboratory Certificate: 199

CET # : 25C0189

Sample ID Laboratory ID Matrix Collection Date/Time Receipt Date

SAMPLE SUMMARY

The sample(s) were received at 25.0 C.

This report contains analytical data associated with following samples only.

1 25C0189-01 Solid 03/10/20253/07/2025

2 25C0189-02 Solid 03/10/20253/07/2025

Client Sample ID 1

Lab ID: 25C0189-01

Notes

Date/Time

AnalyzedPreparedBatchDilution

RL

(mg/L)

Result

(mg/L)Analyte Prep Method

Method: EPA 6020B-1311 Matrix: Extract

Analyst: EASTCLP Metals

Lead ND 1 BC51214 03/12/2025 03/12/2025 17:240.013 EPA 3015A

Selenium ND 1 BC51214 03/12/2025 03/12/2025 17:240.050 EPA 3015A

Cadmium ND 1 BC51214 03/12/2025 03/12/2025 17:240.0050 EPA 3015A

Chromium 0.30 1 BC51214 03/12/2025 03/12/2025 17:240.050 EPA 3015A

Arsenic 0.85 1 BC51214 03/12/2025 03/12/2025 17:240.050 EPA 3015A

Barium ND 1 BC51214 03/12/2025 03/12/2025 17:240.050 EPA 3015A

Silver ND 1 BC51214 03/12/2025 03/12/2025 17:240.020 EPA 3015A

Mercury ND 1 BC51214 03/12/2025 03/12/2025 17:240.0020 EPA 3015A

80 Lupes Drive, Stratford, CT 06615 � Tel: 203-377-9984 � Fax: 203-377-9952 � www.cetlabs.com

Complete Environmental Testing, Inc.

CET # : 25C0189

Client Sample ID 2

Lab ID: 25C0189-02

Notes

Date/Time

AnalyzedPreparedBatchDilution

RL

(mg/L)

Result

(mg/L)Analyte Prep Method

Method: EPA 6020B-1311 Matrix: Extract

Analyst: EASTCLP Metals

Lead ND 1 BC51214 03/12/2025 03/12/2025 17:470.013 EPA 3015A

Selenium ND 1 BC51214 03/12/2025 03/12/2025 17:470.050 EPA 3015A

Cadmium ND 1 BC51214 03/12/2025 03/12/2025 17:470.0050 EPA 3015A

Chromium 3.1 1 BC51214 03/12/2025 03/12/2025 17:470.050 EPA 3015A

Arsenic 5.0 1 BC51214 03/12/2025 03/12/2025 17:470.050 EPA 3015A

Barium ND 1 BC51214 03/12/2025 03/12/2025 17:470.050 EPA 3015A

Silver ND 1 BC51214 03/12/2025 03/12/2025 17:470.020 EPA 3015A

Mercury ND 1 BC51214 03/12/2025 03/12/2025 17:470.0020 EPA 3015A

CET # : 25C0189

Sincerely, David Ditta

Laboratory Director

Report Comments:

Sample Result Flags:

E- The result is estimated, above the calibration range.

H- The surrogate recovery is above the control limits.

L- The surrogate recovery is below the control limits.

B- The compound was detected in the laboratory blank.

P- The Relative Percent Difference (RPD) of dual column analyses exceeds 40%.

D- The RPD between the sample and the sample duplicate is high. Sample Homogeneity may be a problem.

+- The Surrogate was diluted out.

*C1- The Continuing Calibration did not meet method specifications and was biased low for this analyte. Increased uncertainty is associated with the reported value which is likely to be biased low.

*C2- The Continuing Calibration did not meet method specifications and was biased high for this analyte. Increased uncertainty is associated with the reported value which is likely to be biased high.

*F1- The Laboratory Control Sample recovery is outside of control limits. Reported value for this analyte is likely to be biased on the low side.

*F2- The Laboratory Control Sample recovery is outside of control limits. Reported value for this analyte is likely to be biased on the high side.

*I- Analyte exceeds method limits from second source standard in Initial Calibration Verification (ICV). No directional bias.

All results met standard operating procedures unless indicated by a data qualifier next to a sample result, or a narration in the QC report.

For Percent Solids, if any of the following prep methods (3050B, 3540C, 3545A, 3550C, 5035 and 9013A) were used for samples pertaining to this report, the percent solids procedure is within that prep method.

Complete Environmental Testing is only responsible for the certified testing and is not directly responsible for the integrity of the sample before laboratory receipt.

ND is None Detected at or above the specified reporting limit

Reporting Limit (RL) is the limit of detection for an analyte after any adjustment made for dilution or percent moisture.

All analyses were performed in house unless a Reference Laboratory is listed.

Samples will be disposed of 30 days after the report date.

All questions related to this report should be directed to David Ditta, Timothy Fusco, or Jeffrey Smith at 203-377-9984.

Project Manager

This technical report was reviewed by Ashley Mestuzzi

This report shall not be reproduced except in full, without the written approval of the laboratory

CET # : 25C0189

CertificationsAnalyte

CERTIFICATIONS

Certified Analyses included in this Report

EPA 6020B in Water

CTLead

CTSelenium

CTCadmium

CTChromium

CTArsenic

CTBarium

CTSilver

CTMercury

Complete Environmental Testing operates under the following certifications and accreditations :

Code Description Number Expires

Connecticut Public Health 09/30/2026CT PH0116

80 Lupes Drive

Stratford, CT 06615

Tel: (203) 377-9984

Fax: (203) 377-9952 e-mail: cet1@cetlabs.com

Client: Mr. Stephen Arienti

TRC Environmental Consultants

21 Griffin Rd., North

Windsor, CT 06095

Analytical Report

CET# 25A0377

Report Date:January 22, 2025

Project: ConnDOT, Rt 72 Sound Barrier, New Britain

Pennsylvania Certificate: 68-02927Massachusetts Laboratory Certificate: M-CT903

Connecticut Laboratory Certificate: PH 0116 New York NELAP Accreditation: 11982

Rhode Island Laboratory Certificate: 199

CET # : 25A0377

Sample ID Laboratory ID Matrix Collection Date/Time Receipt Date

SAMPLE SUMMARY

The sample(s) were received at 4.0 C.

This report contains analytical data associated with following samples only.

1 25A0377-01 Solid 01/17/202510:301/16/2025

Client Sample ID 1

Lab ID: 25A0377-01

Notes

Date/Time

AnalyzedPreparedBatchDilution

RL

(mg/L)

Result

(mg/L)Analyte Prep Method

Method: EPA 6020B-1311 Matrix: Extract

Analyst: EASTCLP Metals

Lead ND 1 BA52115 01/21/2025 01/21/2025 17:330.013 EPA 3015A

Selenium ND 1 BA52115 01/21/2025 01/21/2025 17:330.050 EPA 3015A

Cadmium ND 1 BA52115 01/21/2025 01/21/2025 17:330.0050 EPA 3015A

Chromium 4.0 1 BA52115 01/21/2025 01/21/2025 17:330.050 EPA 3015A

Arsenic 9.4 1 BA52115 01/21/2025 01/21/2025 17:330.050 EPA 3015A

Barium 0.055 1 BA52115 01/21/2025 01/21/2025 17:330.050 EPA 3015A

Silver ND 1 BA52115 01/21/2025 01/21/2025 17:330.020 EPA 3015A

Mercury ND 1 BA52115 01/21/2025 01/21/2025 17:330.0020 EPA 3015A

CET # : 25A0377

Sincerely, David Ditta

Laboratory Director

Report Comments:

Sample Result Flags:

E- The result is estimated, above the calibration range.

H- The surrogate recovery is above the control limits.

L- The surrogate recovery is below the control limits.

B- The compound was detected in the laboratory blank.

P- The Relative Percent Difference (RPD) of dual column analyses exceeds 40%.

D- The RPD between the sample and the sample duplicate is high. Sample Homogeneity may be a problem.

+- The Surrogate was diluted out.

*C1- The Continuing Calibration did not meet method specifications and was biased low for this analyte. Increased uncertainty is associated with the reported value which is likely to be biased low.

*C2- The Continuing Calibration did not meet method specifications and was biased high for this analyte. Increased uncertainty is associated with the reported value which is likely to be biased high.

*F1- The Laboratory Control Sample recovery is outside of control limits. Reported value for this analyte is likely to be biased on the low side.

*F2- The Laboratory Control Sample recovery is outside of control limits. Reported value for this analyte is likely to be biased on the high side.

*I- Analyte exceeds method limits from second source standard in Initial Calibration Verification (ICV). No directional bias.

All results met standard operating procedures unless indicated by a data qualifier next to a sample result, or a narration in the QC report.

For Percent Solids, if any of the following prep methods (3050B, 3540C, 3545A, 3550C, 5035 and 9013A) were used for samples pertaining to this report, the percent solids procedure is within that prep method.

Complete Environmental Testing is only responsible for the certified testing and is not directly responsible for the integrity of the sample before laboratory receipt.

ND is None Detected at or above the specified reporting limit

Reporting Limit (RL) is the limit of detection for an analyte after any adjustment made for dilution or percent moisture.

All analyses were performed in house unless a Reference Laboratory is listed.

Samples will be disposed of 30 days after the report date.

All questions related to this report should be directed to David Ditta, Timothy Fusco, or Jeffrey Smith at 203-377-9984.

Project Manager

This technical report was reviewed by Timothy Fusco

This report shall not be reproduced except in full, without the written approval of the laboratory

CET # : 25A0377

CertificationsAnalyte

CERTIFICATIONS

Certified Analyses included in this Report

EPA 6020B in Water

CTLead

CTSelenium

CTCadmium

CTChromium

CTArsenic

CTBarium

CTSilver

CTMercury

Complete Environmental Testing operates under the following certifications and accreditations :

Code Description Number Expires

Connecticut Public Health 09/30/2026CT PH0116

Industrial Hygiene Laboratory

21 Griffin Road North

Windsor, CT 06095

(860) 298-6308

66198.CT-DOT.doc

Lab Log #: 0066198

Rt. 72 Sound Barrier, New Britain, CT

CLIENT: CT Department of Transportation

Site:

Date Analyzed:

Date Received:

01/20/2025

01/17/2025

Project #: 501871.8381.0710

BULK ASBESTOS ANALYSIS REPORT

Asbestos

Type

Other Matrix

MaterialsSample No.

Asbestos

POLARIZED LIGHT MICROSCOPY by EPA 600/R-93/116

Sample Location

Homogeneous

Material Description

Rt 72 East bound - - - None1 NDBlack F1 - foam in between wood panels and wood pillars

Rt 72 Eastbound - - - None2 NDBlack F1 - foam in between wood panels and wood pillars

Trace - asbestos was observed at level of 1% or less - This is the reporting limit

NA/PS - Not Analyzed / Positive Stop

SNA - Sample Not Analyzed- See Chain of Custody for details

Notes: Asbestos-Containing Material (ACM) is any material containing more than 1% asbestos

The Laboratory at TRC follows 18/01A EPA -- 40 CFR Appendix E to subpart E of Part 763, Interim Method of the Determination of Asbestos in Bulk Insulation Samples and 18/A03 EPA 600/R-93/116: Method for the Determination of Asbestos in Bulk Building Materials which utilize polarized light microscopy (PLM). Our analysts have completed an accredited course in asbestos identification. TRC's Laboratory is accredited under the National Voluntary Laboratory Accreditation Program (NVLAP), for

Bulk Asbestos Fiber Analysis, NVLAP Code 101424-01. TRC is accredited by the AIHA Laboratory Accreditation Programs AIHA LAP (ID: LAP-100122) in the

Industrial Hygiene Program (IHLAP) for PLM. Asbestos content is determined by visual estimate unless otherwise indicated. Quality Control is performed in-house on at least 10% of samples and QC data related to the samples is available upon written request from client.

This report shall not be reproduced, except in full, without the written approval of TRC. This report must not be used by the client to claim product endorsement by

NVLAP or any agency of the U.S. Government. This report relates only to the items tested, as received by the laboratory.

ND - asbestos was not detected

Note: Polarized-light microscopy is not consistently reliable in detecting asbestos in floor coverings and similar non-friable organically bound materials. In those cases, EPA recommends, and certain states (e.g. NY) require, that negative results be confirmed by quantitative transmission electron microscopy.

Analyzed by: Reviewed by Date Issued

01/20/2025Kathleen Williamson, Laboratory Manager Najaat Bhura, Approved Signatory

TRC LABORATORY ASBESTOS ANALYTICAL ACCREDITATIONS

NVLAP Lab Code 101424-0

RI #PLM00007 TX #300354

CO# AL-21772

AIHA LAP #100122

VT #An-000020

LA#05011

CT #PH-0426

VA #3333 000283

PA#68-03387

NY #10980

NV #CT00004

WA #C1071

WV #000622

CA #2907

ME LB-0071

AZ #AZ0944

PHIL#ALL-461

MA #AA000052

HI #L-09-004

SIH - WinSIH HBM Survey ConnDOT, Rt 72 Sound Barrier New Britain CT, Rt 72 W Exit 2 And Rt 72 East New Britain Connecticut

1/19/2025, 5:48:55 PM UTC

CREATED

1/16/2025, 4:41:58 PM UTC

by Hugh Crundwell

UPDATED

1/19/2025, 5:48:55 PM UTC

by Kathleen Williamson

STATUS

In Progress

ASSIGNED TO

No Assignment

NOTE: No site sketch detected!

Please be sure to add at least one.

JOB INFORMATION

Site Name Rt 72 Sound Barrier New Britain CT

Address Rt 72 W Exit 2 And Rt 72 East New Britain Connecticut

TRC Project Number 501871.8381.0710

Project Manager Stephen Arienti

Inspector(s) Hugh Crundwell,Alex LeMay

Client ConnDOT

Type of Asbestos Survey Reno/Demo

Site Sketch Diagrams

Additional Analysis for NOB Materials (Calc)

TEM NY NOB 198.4

PLM Turnaround Time (TAT)

TEM Turnaround Time (TAT) 5-day

Date January 16, 2025

General Notes

Overview Photo

Sound barrier on 72 E

Behind 72 E sound barrier

Close-up of 72 E sound barrier post. No foam.

Options & Other Settings

Use auto-numbering? No

Auto-fill gaps? Yes

Alert user about missing site sketch? Yes

SURVEYS PERFORMED Asbestos, XRF, TCLP Sampling

Asbestos Survey

Materials & Samples (1 Item)

Materials & Samples - 1. (2) Samples #1–2: F1–Black foam in between wood panels and wood pillars

Sample Information

Asbestos Samples (2 Items)

Sound barrier along 72 WFoam pad behind posts on 72 W barrier

Asbestos Samples - 1. Sample #1: F1…Rt 72 East bound

Sample Number 1

Sample Location Rt 72 East bound

Asbestos Bulk Analysis PLM EPA 600/R93/116

Grab or Composite Grab

Date January 16, 2025

Time 11:45

Sample Location Photo

Asbestos Samples - 2. Sample #2: F1…Rt 72 Eastbound

Sample Number 2

Sample Location Rt 72 Eastbound

Asbestos Bulk Analysis PLM EPA 600/R93/116

Grab or Composite Grab

Date January 16, 2025

Time 11:45

Sample Location Photo

Material Information

Sampled or Assumed? Sampled

Material Acronym F1

Material Description Black foam in between wood panels and wood pillars

Material Color Exterior green paint over black foam

Representative Photos

Analyze by layer? No

Is material non-friable organically bound (NOB)?

No

Homogeneous Area

Total Approximate Quantity

Notes

XRF Survey

Niton XRF Model No.

XRF Survey Completed Yes

XRF Data Downloaded Yes

XRF Shots >1.0 on non-metallic building materials

No

Date Data Downloaded

TCLP/SPLP/Total Lead Survey

Samples (1 Item)

Samples - 1. Composite samples

TCLP/SPLP/Total Lead Sample Description

Composite samples

TCLP/SPLP/Total Lead Components

Type of Analysis TCLP RCRA 8 Metals

Sample Number

Grab or Composite Composite

Date

Time

TCLP/SPLP/Total Lead Notes

TCLP/SPLP/Total Lead Photos

LAB & SAMPLE SUBMISSION INFO

Signature

Asbestos Bulk Samples

Remarks to be added to the CoC

Asbestos samples submitted to TRC lab?

Yes

Date Submitted to Lab January 17, 2025

Asbestos bulk sample CoC data electronically sent to lab yet?

Yes

Asbestos bulk sample results reviewed?

No

TCLP Samples

TCLP/SPLP Samples Submitted to Lab

No

TCLP/SPLP Samples Submitted To:

Date Submitted to Lab

REPORT CREATION

Select one or more documents below to be generated. Once completed in the cloud, they will be sent to the listed email address.

NOTE: Asbestos bulk sample CoC data must now be sent electronically to the lab by selecting "Asbestos chain-of-custody - Send to Lab" from the list below.

What documents should be generated?

Asbestos chain-of-custody, Asbestos chain-of-custody - Send to Lab

Generate Documents

PROJECT STATUS TRACKING

Has this survey been completed? No

Has the report been written? No

Has the report been reviewed? No

Connecticut Department of Transportation PRELIMINARY DESIGN REPORT State Project No. 0088-0200 Route 72 Noise Barrier Replacement New Britain, CT

1 December 2024

1. Project Description

The proposed project involves the replacement of noise barriers on either side of Route 72 between mile markers 1.44 and 1.76. These noise barriers extend onto Exit 2 ramps at Corbin Avenue and terminate at the bridge over Route 555 in New Britain. The existing noise barrier is highly deteriorated, and the entire length will be replaced on the eastbound and westbound sides of Route

72. See Appendix A for a project location map.

McFarland Johnson (MJ) will develop replacement noise barriers to at least the elevation of the top of existing barrier. The proposed barrier will be largely in the same location as the existing barrier, other than a shift away from Hamilton Street on the eastbound side of Route 72 to accommodate future Beeline Trail construction. Also included is the project is the replacement of guiderails in front of the noise barrier, which will be replaced with a new MASH compliant guiderail.

2. Purpose and Need

The purpose of this project is to provide adequate noise protection along a section of eastbound and westbound Route 72 between Route 555 (West Main Street Overpass) and Exit 7 in the City of New Britain. The existing timber structure is badly weathered and rotted with missing panels and beyond its useful life, hence warranting complete replacement.

3. Existing and Proposed Conditions

Route 72 is a six-lane urban principal arterial with a posted speed limit of 55 mph. The noise barrier is on both the eastbound and westbound sides of Route 72, and it extends onto Exit 2 ramps.

The Average Daily Traffic (ADT) is 34,200 vehicles per day (2022 count) in the eastbound direction and 32,100 in the westbound direction. Route 72 consists of 12’ travel lanes, 4’ inside shoulders, and outside shoulders that are mostly 8’ wide.

No changes to the existing roadway and exit ramp configurations are included in this project, and any limited roadway work will match existing conditions. Relevant design criteria are included in Table 1 in Section 4 below.

The existing noise barriers are approximately 1,680’ in length on the eastbound side of Route 72 and 1,010’ on the westbound side. These noise barriers were originally installed in 1989 and have fallen into disrepair. The wood barriers are covered in vegetation and are falling apart along the entire length. The entire length of barrier is shielded by a combination of guiderail and barrier. On the eastbound side there is 240’ of barrier near Black Rock Avenue. There is also 360’ of barrier in front of the barrier at the Exit 2 westbound off ramp which acts as a retaining wall for an embankment. This exists to elevate the noise barrier foundation above ledge found in this area.

The proposed noise barrier layout is to remain largely the same as the existing barrier. The design is to have the same length as the existing barrier and will almost entirely follow the existing alignment. The only deviation is at the end of Hamilton Street on the eastbound side. This is to

Connecticut Department of Transportation PRELIMINARY DESIGN REPORT State Project No. 0088-0200 Route 72 Noise Barrier Replacement New Britain, CT

December 2024

Location Map

Project Location Project# 0088-0200

File details come from the government source that posted it. Updated .