3.0 Transportation and Off-Site Disposal - MBTA.com

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Section 2 presents background information on the Site and the proposed remediation ... car movement designed to minimize off-site noise and traffic impacts.


Transportation Management Plan Readville 5-Yard Remediation Project Release Tracking Number 3-2856

Massachusetts Bay Transportation Authority Readville 5-Yard Facility Industrial Drive Dedham & Readville, Massachusetts

Transportation Management Plan Readville 5-Yard Remediation Project Release Tracking Number 3-2856

Massachusetts Bay Transportation Authority Readville 5-Yard Facility Industrial Drive Dedham & Readville, Massachusetts







_________________________________ Prepared By



_________________________________ Reviewed By



Contents

1.0 Introduction 1-1

2.0 Background 2-1

3.0 Transportation and Off-Site Disposal 3-1

4.0 Vehicle Decontamination Procedures 4-1

5.0 Work Day Limitations 5-1

6.0 Reporting 6-1

7.0 References 7-1



List of Attachments

Attachment A Transportation Management Plan Amendment Form

Attachment B Truck Route



Introduction

On behalf of the Massachusetts Bay Transportation Authority (MBTA) of Boston, Massachusetts, AECOM Environment (AECOM) is conducting a remediation program at the Readville 5 Yard facility (“the Site”) located on Industrial Drive at the border between Dedham and Boston, Massachusetts. The Site is a 42-acre property contaminated with metals (primarily lead and arsenic), polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs) and petroleum hydrocarbons. The Site is abutted by residential properties to the north and west and by industrial properties to the south and east. Vehicular access to the Site is via a locked gate on Industrial Drive to the south. Rail access is available via tracks to the east but may require infrastructure improvements or rail switch rehabilitation before being usable.

Under the Massachusetts Contingency Plan (310 CMR 40.0000 – the MCP) the Site is identified by the Massachusetts Department of Environmental Protection (MassDEP) as Release Tracking Number (RTN) 3-2856.

The preferred remedial alternative involves the excavation, stabilization, and off-site transportation and disposal of over 10,000 tons of soil contaminated (primarily) with lead and arsenic. To mitigate impacts to the adjacent community, the MBTA has developed a Transportation Management Plan (TMP) to minimize the potential impacts due to noise, dust and traffic associated with the off-site disposal of the contaminated soil. This document outlines the plan to be implemented during the remediation activities.

Section 2 presents background information on the Site and the proposed remediation process.

Section 3 presents the procedure for the two alternatives for off-site soil transport; truck and rail.

Section 4 describes required vehicle decontamination procedures.

Section 5 describes work day limitations on truck/rail car movement designed to minimize off-site noise and traffic impacts.

Section 6 provides references and citations.

Changes to the TMP will be documented using the Amendment Form presented in Attachment A. Attachment B provides a figure depicting the required truck route.

Background

AECOM is overseeing the remediation of the Site, including removal of soil, in order to insure that the residual soil concentrations meet the risk- based commercial /industrial worker standards developed to achieve a Permanent Solution at the Site. Soil removal activities are expected to be conducted for approximately six months starting in August 2011, as described in the Phase III and Phase IV (AECOM, 2009).

Highly contaminated soil stockpiles, hotspots, and below grade soils will be excavated and subsequently transported off-site for disposal. The soils will be excavated with an excavator/backhoe, screened to removed debris, stabilized on-site (as necessary), and then loaded onto containers for off- site disposal.

The stabilization process will consist of spraying a chemical stabilizing agent (e.g., a phosphate-based chelating compound), then working the soil with an excavator/backhoe to stabilize the leachable contaminants and reduce Toxicity Characteristic Leaching Procedure (TCLP) concentrations to below applicable hazardous waste thresholds. The chemical stabilizing agent binds the contaminant (i.e., lead) to the soil and forms an insoluble compound, thereby rendering it unleachable. Stabilization is performed by spraying the stabilizing agency into the stockpile, mixing the stockpile thoroughly with an excavator, and re-spraying as necessary for covereage. Post-stabilization testing will be performed where applicable to assess resulting TCLP concentrations.

Excavation and screening activities will be focused in the Exclusion Zone in the western and west-central portions of the Site. Loading activities will occur on or near the concrete pad, in the southern portion of the Site near Industrial Way.

To minimize fugitive dust, dust control measures will be implemented during all Site activities likely to generate dust. Such activities are anticipated to include soil excavation, on-site soil movement, screening, stabilization, and loading. During daily operations, dust abatement measures (i.e., water spraying or misting) will be employed to minimize the spread of dust contaminants, and to reduce the potential for exposure to Site workers and the adjacent community in accordance with the remediation Air Monitoring Plan (AECOM, 2009).

Transportation and Off-Site Disposal

Contaminated soil and debris will be transported off-Site by truck or rail. The rail disposal option may not be viable due to required infrastructure improvements to the track on-Site.

Trucks leaving the Site will be decontaminated as described below and will conform to the truck route shown on the figure included in Attachment B. This route is as follows:

• Start out going EAST on INDUSTRIAL WAY toward INDUSTRIAL DRIVE (0.0 mi)

• INDUSTRIAL WAY toward INDUSTRIAL DRIVE (0.5 mi)

• Turn RIGHT onto MILTON ST (0.1 mi)

• Turn RIGHT onto MILTON ST/NEPONSET VALLEY PKWY (0.1 mi)

• Turn RIGHT onto HYDE PARK AVE/NEPONSET VALLEY PKWY. Continue to follow NEPONSET VALLEY PKWY (0.7 mi)

• Turn SLIGHT RIGHT to stay on NEPONSET VALLEY PKWY (0.6 mi)

• Turn RIGHT onto BLUE HILL AVE/MA-138. Continue to follow MA-138 S. (1.9 mi) to Interstate 93

All containers will be covered and decontaminated prior to leaving the Site.

It is estimated that, using 30-ton trucks, approximately 714 truckloads will need to be transported from the Site and that due to the likely disposal location(s) in New Hampshire for Maine or soil transported via truck, that this will be accomplished in 9 to 10 weeks, working from Monday to Friday only.

Should rail cars be used, we estimate that approximately 214 100-ton gondolas will be brought off-Site in batches of approximately 13 rail cars each. All rail cars will be covered and decontaminated prior to leaving the Site. It is anticipated that rail cars will be shipped to a landfill(s) in Virginia or Michigan, over a period of 3 to 4 weeks, working from Monday to Friday only.

Vehicle Decontamination Procedures

Prior to exiting the Site, transport vehicles will be decontaminated via washing. This washing activity will take place on a decontamination pad (decon pad) located adjacent to the concrete pad, or as close to it as feasible. Heavy equipment may be dry decontaminated, if possible. It should be noted that, if possible, clean areas/corridors that either eliminate or minimize any decontamination washing will be utilized. Efforts will be made to unload, use and load transport equipment in a manner that prevents contact of the vehicles with impacted materials and, therefore, decontamination will not be necessary.

4.1 Decon Pad Design

A decon pad will be constructed to decontaminate equipment and vehicles exiting the Site, such as excavators, or support trucks that may have come into contact with contaminated soil. At a minimum, equipment and/or vehicles that contact potentially contaminated soil will be washed down (or dry decontaminated) prior to exiting the Site. A typical decon pad design is as follows:

• The decon pad dimensions will be 50 feet (length) by 15 feet (width);

• The pad will slope toward a center low point sump to allow for collection of decontamination water;

• The pad will be constructed of 60 mil high density polyethylene (HDPE) liner material overlain by a geotextile, and a minimum of 12 inches of clean sub-angular stone will be back filled over the HDPE liner and geotextile;

• A 12-inch high containment berm constructed of clean sub-angular stone will be placed around the perimeter of the decon pad; and

• The pad will be equipped with 3-feet high splash guards dropped inside the bermed pad to prevent over spray.

4.2 Decon Water

Equipment and vehicles exiting established the Site during contaminated soils remediation activities will be washed down, as required, using a high pressure water and steam system.

Decon water will drain toward the center of the decon pad. A 6-inch diameter perforated HDPE pipe (SDR 17 or equal) will be located at the low point of the pad which will collect and drain decon water into a 55-gallon sump or equivalent.

Water collected in the sump will be pumped into a 5,000-gallon storage (poly) tank or equivalent. Flexible hose and/or piping will serve as the connection between the decon pad sump and the poly tank.

4.3 Decon Water Disposal

Poly tanks that are at or near capacity will be transported to a fully operational, licensed facility that is in compliance with all Federal, State, and local regulations which is capable of decon water recycling or disposal.

AECOM will prepare all hazardous waste manifests and all other documentation in order to transport and dispose of decon water. MBTA will be designated as generator and will sign all manifests.

Documentation certifying that all decon water was transported to, accepted, and disposed of, will be submitted to MBTA. The documentation will include, but is not limited to the following:

• A record of each load from the Site to the disposal/recycling facility, including all manifests, Bills of Lading, and all other documentation as applicable.

• All documentation for each load shall be tracked by the original manifest document number that was assigned at the Site.

It should also be noted that decon water will not be transported off-site until all disposal/recycling facility documentation has been reviewed and approved by MBTA or their representative.

Transportation of the decon water from the Site to the disposal/recycling facility will be in accordance with all U.S. Department of Transportation (DOT), U.S. Environmental Protection Agency (EPA) and MassDEP regulations. Decon water hauler(s) will be licensed in all states affected by the transport.

Chemical analyses shall be performed on behalf of the MBTA, as necessary, to fulfill any disposal/recycling testing requirements of the approved facility. The decontamination water will be sampled at the frequency specified by the disposal facility and for the parameters required for waste acceptance at the facility. A copy of all chemical analyses results will be submitted to MBTA after receipt of the laboratory report.

4.4 Decon Pad Disposal

Once contaminated soils excavation activities at the Site have been completed, the decon pad will be disassembled and each component handled properly.

The stone base will be tested to determine the most appropriate end use or disposal method. The HDPE liner will be pressure washed. It is anticipated that both materials will be reused and/or disposed in a lined landfill. The geotextile will be properly disposed at a lined landfill.

4.5 Contamination Prevention

One of the most important aspects of decontamination is the prevention of contamination. Good contamination prevention should minimize worker/adjacent resident exposure and help ensure valid sample results by precluding cross-contamination. For heavy equipment, procedures for contamination avoidance include limiting the surface area of equipment that comes into contact with contamination.

4.6 Disposal Procedures

Discarded materials, waste materials, field equipment and supplies will be handled to preclude the potential for spreading contamination, creating a sanitary hazard, or causing litter to be left on site. Potentially contaminated materials, e.g., clothing, gloves, etc., will be bagged or drummed with appropriate labeling affixed as regulated, and disposed of and shipped with other hazardous materials. Non-contaminated materials shall be collected, bagged, and disposed of as simple non-hazardous solid waste.

Work Day Limitations

To minimize off-site noise impacts, all remediation activities including vehicular/rail car movement will be limited to weekdays between the hours of 7:00 am and 6:00 pm.



Reporting

After screening and stabilization of TCLP-lead exceedence soil, the soil will be loaded using an excavator/backhoe into DOT-approved covered trucks or rail cars for shipment and disposal at a licensed, out-of-state lined landfill. Truck and rail transportation will be performed by a licensed hazardous waste hauler. Soil will be shipped using Massachusetts Bills of Lading (BOLs), which will be stamped by the Licensed Site Professional. Certified weight slips and original BOLs will be obtained from the disposal facility for inclusion in the Phase IV Status Reports and/or Response Action Outcome (RAO) Statement.

Daily logs will be completed in which the time of shipment, estimated volume of material shipped, the vehicle registration number and the transporter name is recorded on a Bill of Lading Log Sheet (BWSC 012B). A summary report with the date of shipment, date of receipt at the facility, number of loads shipped, and total daily tonnage values recorded will be developed on a weekly basis on a Bill of Lading Summary Form (BWSC 012C) . This report will be available at the Site.

References

AECOM, 2009. Supplemental Phase II/III and Revised Phase IV Remedy Implementation Plan; MBTA Readville 5-Yard Site, Industrial Drive, Readville and Dedham, Massachusetts. AECOM.

MassDEP, 2008. Massachusetts Contingency Plan (MCP) 310 CMR 40.000.

Attachment A

Transportation Monitoring Plan Amendment

Transportation Management Plan Amendment Form

Amendment No.:

|Client: |Project Number: | |Location: |Date: | |Project Manager: |Site Monitor: | |Amendment: | | | |  | |Reason for Amendment: |

|Signature | |Date: |



Attachment B

Truck Route

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