1

AECOM

January 15, 2010

The Honorable Thomas M. Menino

City of Boston, Mayor's Office

One City Hall Plaza

Boston, Massachusetts 02201-2102

Re: Supplemental Phase II Comprehensive Site Assessment, Revised Phase III Remedial
Alternatives Analysis, and Phase IV Remedy Implementation Plan
MBTA Readville 5-Yard Site
Release Tracking Number 3-2856

Dear Mayor Menino:

AECOM, on behalf of the Massachusetts Bay Transportation Authority (MBTA), is herebynotifying your office that a Supplemental Phase II Comprehensive Site Assessment (Phase II), aRevised Phase III Remedial Alternatives Analysis (Phase III), and a Phase IV Remedy ImplementationPlan (Phase IV RIP) have been submitted to the Massachusetts Department of Environmental Protection(DEP) for the Readville 5-Yard Site located on Industrial Drive, in Dedham and Boston, Massachusetts(the Site). Thls notification is provided in accordance with the public involvement requirements of theMassachusetts Contingency Plan (MCP), 310 CMR 40.1403.

The purpose of this Phase IV RIP is to document engineering concepts and design criteria to be used forthe design and construction for the Comprehensive Remedial Action based on commercial/industrialproperty end use. Secondary goals of this document are to present and analyze supplemental Site datain support of an updated risk characterization and Supplemental Phase II report, as well as to present aRevised Phase III report.

The Phase IV RIP report containing the Supplemental Phase II and Revised Phase III reports andsupporting documentation are on file and available for public review at DEP's Northeast RegionalOffice in Wilmington, Massachusetts, and at the two public repositories established in Dedham(Dedham Public Library, 45 Church Street) and Boston (Hyde Park Branch Library, 35 HarvardAvenue).

Should you have any question, please contact our office at (978) 589-3000.

Very truly yours,
AECOM

Elissa Brown, CPG, CHMM, LSP
Senior Program Director

cc:Debra M. Darby, Site Remediation Specialist, MBTA
MA DEP Bureau of Waste Site Cleanup North East Regional Office
Public Involvement Program (PIP) Repositories

To enhance and sustain the world’s built, natural and social environments

\\Uswesf001.ensr.net\jobs\Concord\105627 - MBTA\PROJ\TO-1 Readville\January 2010 Phase II_III_IV FINAL\Appendices\Appendix I - Letters to Municipal Officers and PIP Participants.docx

1

AECOM

January 15, 2010

The Honorable Barbara Ferrer

Board of Health, Executive Director

1010 Massachusetts Ave, 2nd Floor

Boston, Massachusetts 02118

Re: Supplemental Phase II Comprehensive Site Assessment, Revised Phase III Remedial
Alternatives Analysis, and Phase IV Remedy Implementation Plan
MBTA Readville 5-Yard Site
Release Tracking Number 3-2856

Dear Dr. Ferrer:

AECOM, on behalf of the Massachusetts Bay Transportation Authority (MBTA), is herebynotifying your office that a Supplemental Phase II Comprehensive Site Assessment (Phase II), aRevised Phase III Remedial Alternatives Analysis (Phase III), and a Phase IV Remedy ImplementationPlan (Phase IV RIP) have been submitted to the Massachusetts Department of Environmental Protection(DEP) for the Readville 5-Yard Site located on Industrial Drive, in Dedham and Boston, Massachusetts(the Site). Thls notification is provided in accordance with the public involvement requirements of theMassachusetts Contingency Plan (MCP), 310 CMR 40.1403.

The purpose of this Phase IV RIP is to document engineering concepts and design criteria to be used forthe design and construction for the Comprehensive Remedial Action based on commercial/industrialproperty end use. Secondary goals of this document are to present and analyze supplemental Site datain support of an updated risk characterization and Supplemental Phase II report, as well as to present aRevised Phase III report.

The Phase IV RIP report containing the Supplemental Phase II and Revised Phase III reports andsupporting documentation are on file and available for public review at DEP's Northeast RegionalOffice in Wilmington, Massachusetts, and at the two public repositories established in Dedham(Dedham Public Library, 45 Church Street) and Boston (Hyde Park Branch Library, 35 HarvardAvenue).

Should you have any question, please contact our office at (978) 589-3000.

Very truly yours,
AECOM

Elissa Brown, CPG, CHMM, LSP
Senior Program Director

cc:Debra M. Darby, Site Remediation Specialist, MBTA
MA DEP Bureau of Waste Site Cleanup North East Regional Office
Public Involvement Program (PIP) Repositories

To enhance and sustain the world’s built, natural and social environments

\\Uswesf001.ensr.net\jobs\Concord\105627 - MBTA\PROJ\TO-1 Readville\January 2010 Phase II_III_IV FINAL\Appendices\Appendix I - Letters to Municipal Officers and PIP Participants.docx

1

AECOM

January 15, 2010

Mrs. Leanne Jasset

Chairman, Board of Health

Town Administration Building

26 Bryant Street

Dedham, Massachusetts 02026

Re: Supplemental Phase II Comprehensive Site Assessment, Revised Phase III Remedial
Alternatives Analysis, and Phase IV Remedy Implementation Plan
MBTA Readville 5-Yard Site
Release Tracking Number 3-2856

Dear Mrs. Jasset:

AECOM, on behalf of the Massachusetts Bay Transportation Authority (MBTA), is herebynotifying your office that a Supplemental Phase II Comprehensive Site Assessment (Phase II), aRevised Phase III Remedial Alternatives Analysis (Phase III), and a Phase IV Remedy ImplementationPlan (Phase IV RIP) have been submitted to the Massachusetts Department of Environmental Protection(DEP) for the Readville 5-Yard Site located on Industrial Drive, in Dedham and Boston, Massachusetts(the Site). Thls notification is provided in accordance with the public involvement requirements of theMassachusetts Contingency Plan (MCP), 310 CMR 40.1403.

The purpose of this Phase IV RIP is to document engineering concepts and design criteria to be used forthe design and construction for the Comprehensive Remedial Action based on commercial/industrialproperty end use. Secondary goals of this document are to present and analyze supplemental Site datain support of an updated risk characterization and Supplemental Phase II report, as well as to present aRevised Phase III report.

The Phase IV RIP report containing the Supplemental Phase II and Revised Phase III reports andsupporting documentation are on file and available for public review at DEP's Northeast RegionalOffice in Wilmington, Massachusetts, and at the two public repositories established in Dedham(Dedham Public Library, 45 Church Street) and Boston (Hyde Park Branch Library, 35 HarvardAvenue).

Should you have any question, please contact our office at (978) 589-3000.

Very truly yours,
AECOM

Elissa Brown, CPG, CHMM, LSP
Senior Program Director

cc:Debra M. Darby, Site Remediation Specialist, MBTA
MA DEP Bureau of Waste Site Cleanup North East Regional Office
Public Involvement Program (PIP) Repositories

To enhance and sustain the world’s built, natural and social environments

\\Uswesf001.ensr.net\jobs\Concord\105627 - MBTA\PROJ\TO-1 Readville\January 2010 Phase II_III_IV FINAL\Appendices\Appendix I - Letters to Municipal Officers and PIP Participants.docx

1

AECOM

January 15, 2010

Mr. James A. MacDonald

Chairman, Boardd of Selectmen

Town Administration Building

26 Bryant Street

Dedham, Massachusetts 02026

Re: Supplemental Phase II Comprehensive Site Assessment, Revised Phase III Remedial
Alternatives Analysis, and Phase IV Remedy Implementation Plan
MBTA Readville 5-Yard Site
Release Tracking Number 3-2856

Dear Mr. MacDonald:

AECOM, on behalf of the Massachusetts Bay Transportation Authority (MBTA), is herebynotifying your office that a Supplemental Phase II Comprehensive Site Assessment (Phase II), aRevised Phase III Remedial Alternatives Analysis (Phase III), and a Phase IV Remedy ImplementationPlan (Phase IV RIP) have been submitted to the Massachusetts Department of Environmental Protection(DEP) for the Readville 5-Yard Site located on Industrial Drive, in Dedham and Boston, Massachusetts(the Site). Thls notification is provided in accordance with the public involvement requirements of theMassachusetts Contingency Plan (MCP), 310 CMR 40.1403.

The purpose of this Phase IV RIP is to document engineering concepts and design criteria to be used forthe design and construction for the Comprehensive Remedial Action based on commercial/industrialproperty end use. Secondary goals of this document are to present and analyze supplemental Site datain support of an updated risk characterization and Supplemental Phase II report, as well as to present aRevised Phase III report.

The Phase IV RIP report containing the Supplemental Phase II and Revised Phase III reports andsupporting documentation are on file and available for public review at DEP's Northeast RegionalOffice in Wilmington, Massachusetts, and at the two public repositories established in Dedham(Dedham Public Library, 45 Church Street) and Boston (Hyde Park Branch Library, 35 HarvardAvenue).

Should you have any question, please contact our office at (978) 589-3000.

Very truly yours,
AECOM

Elissa Brown, CPG, CHMM, LSP
Senior Program Director

cc:Debra M. Darby, Site Remediation Specialist, MBTA
MA DEP Bureau of Waste Site Cleanup North East Regional Office
Public Involvement Program (PIP) Repositories

To enhance and sustain the world’s built, natural and social environments

\\Uswesf001.ensr.net\jobs\Concord\105627 - MBTA\PROJ\TO-1 Readville\January 2010 Phase II_III_IV FINAL\Appendices\Appendix I - Letters to Municipal Officers and PIP Participants.docx

NOTICE OF PUBLIC INVOLVEMENT PLAN MEETING

READVILLE RAIL 5-YARD FACILITY

INDUSTRIAL DRIVE, DEDHAM, MA

3-2856

A release of oil and/or hazardous materials has occurred at this location, which isa disposal site as defined by M.G.L. c. 21E, 5 2 and the MassachusettsContingency Plan, 310 CMR 40.0000. On July 13, 2001, the MBTA received apetition from residents in Dedham and Boston requesting that this disposal sitebe designated a Public lnvolvement Plan site, in accordance with M.G.L. c. 21E§14(a) and 310 CMR 40.1404.

In response to Massachusetts Contingency Plan requirements, the MBTA hasprepared a Phase IV Remedy lmplementation Plan. The Remedylmplementation Plan can be reviewed at the Massachusetts Department ofEnvironmental Protection Northeast Regional Office, 205B Lowell Street,Wilmington, MA and at the following Public lnvolvement Plan repositories inDedham and Boston.

Dedham Public Library

43 Church Street

Dedham, MA 02026

(781 ) 326-0583

Hyde Park Branch Library

35 Harvard Avenue

Hyde Park, MA 02136

(61 7) 361-2524

As a result, a public meeting will be held atBoston Police Department, District 18 Police Station, 1249 Hyde Park Avenueon Wednesday, May 26, 2010at 7pm to present the Remedy lmplementation Plan and to provideinformation about disposal site conditions. Copies of the Remedylmplementation Plan will be made available at the meeting.

Any questions regarding this meeting or the Public lnvolvement Plan shouldbe directed to Debra Darby, Site Remediation Specialist, MBTA (617 222-3169).

To enhance and sustain the world’s built, natural and social environments

\\Uswesf001.ensr.net\jobs\Concord\105627 - MBTA\PROJ\TO-1 Readville\January 2010 Phase II_III_IV FINAL\Appendices\Appendix I - Letters to Municipal Officers and PIP Participants.docx