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Tinkham Garage NPL Site Administrative Record

Explanation of Significant Differences (ESD)

Operable Unit 2

Index

ESD Dated: March 2016 Released: March 2016

Prepared by EPA New England

Office of Site Remediation & Restoration

Introduction to the Collection

This is the Administrative Record for the Explanation of Significant Differences (ESD) for Operable Unit 2, for the Tinkham Garage Superfund Site, located in Londonderry, New Hampshire. This ESD was released March 2016. The file contains site-specific documents and a list of guidance documents used by EPA staff in selecting a response action at the site. This Administrative Record replaces the Administrative Record File for the Draft Explanation of Significant Differences (ESD) for Operable Unit 2 for public comment, released in October 2015. This Administrative Record Index includes, by reference, the following Administrative Records issued on the dates indicated: Operable Unit (OU) 1 Record of Decision (ROD), issued in March 1989; OU1 Explanation of Significant Differences (ESD), issued in January 1992; OU1 ESD, issued in March 2003. The Administrative Record is available for public review: Online: http://semspub.epa.gov/src/collection/01/AR63963 For general information on the site visit: www.epa.gov/superfund/tinkham For assistance with access or for questions, contact:

Leach Library 276 Mammoth Road Londonderry, NH 03053 Tel. (603) 432-1132 Hours: Monday - Thursday 9:00 a.m. - 8:00 p.m.

Friday 10:00 a.m. - 2:00 p.m. Saturday 9:00 a.m. - 5:00 p.m.

Website: http://londonderrynh.org/Pages/LondonderryNH_Library/index U.S. Environmental Protection Agency

Office of Site Remediation and Restoration Records Center 5 Post Office Square, Suite 100 Boston, MA 02109-3912 Tel. (617)918-1440 Hours: Monday - Friday 9:00 a.m. to 5:00 p.m.

An administrative record file is required by the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended by the Superfund Amendments and Reauthorization Act (SARA).

Questions about this administrative record file should be directed to the EPA New England site manager: Cheryl Sprague via telephone at (617) 918-1244, or via e-mail at [email protected].

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AR Collection 63963 Explanation of Significant Differences (ESD), 03‐09‐2016

AR Collection Index Report

***For External Use***

Phase 01: SITE ASSESSMENT

571648 MEMO CONCERNING ALTERNATE WATER SUPPLY EVALUATION (02/17/1983 TRANSMITTAL

LETTER ATTACHED) # of Pages: 4 Date:

02/16/1983 Author: Threlfall, Daniel (NUS CORP SUPERFUND DIVISION)

Addressee: Falvey, Patrick, C (NUS CORP) Document Type: Memo

File Break: 01.05

Access Type: Uncontrolled

571636 HAZARD RANKING SYSTEM (HRS) PACKAGE # of Pages: 82

Date: 07/31/1995

Author: (US EPA) Addressee: Document Type: Report

File Break: 01.06


Phase 02: REMOVAL RESPONSE

571648 ALTERNATE WATER SUPPLY EVALUATION (TRANSMITTAL LETTER ATTACHED) # of Pages: 26

Date: 03/01/1983

Author: (NUS CORP) Addressee: (US EPA REGION 1) Document Type: Report

File Break: 02.02


Phase 05: RECORD OF DECISION (ROD)

583913 EMAIL REGARDING MEETING AND CONFERENCE CALL TO DISCUSS NEXT STEPS IN ADDRESSING GROUNDWATER CONTAMINATION AT SITE (EMAIL HISTORY ATTACHED)

# of Pages: 4 Date: 04/02/2015

Author: Sherman, Ruthann (US EPA REGION 1)

Addressee: Sanoff, Robert S (FOLEY HOAG & ELIOT LLP)

Document Type: Email

File Break: 05.01


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583912 EMAIL REGARDING CONFERENCE CALL ON RESIDENTIAL DRINKING WATER CONTAMINATION AT SITE (EMAIL HISTORY ATTACHED)

# of Pages: 2 Date: 04/09/2015


Addressee: Sprague, Cheryl L (US EPA REGION 1), Sanoff, Robert S (FOLEY HOAG & ELIOT LLP), Phillips, Ian (ROUX ASSOCIATES INC), Lucic, Robert R (SHEEHAN PHINNEY), Guarnaccia, Joseph (NEWBURYPORT (MA) DAILY NEWS), (WALTERS CONSULTING)


File Break: 05.01


583917 LETTER REGARDING IDENTIFICATION OF PRESENCE OF CONTAMINANTS, CHLORINATED VOLATILE ORGANIC COMPOUNDS (CVOC) AND 1,4‐DIOXANE IN FIVE BEDROCK SUPPLY WELLS LOCATED ON BOSTON AND CHARLESTON AVENUES IN LONDONDERRY (NH) (CONCEPTUAL SCOPE OF WORK ATTACHED)

# of Pages: 4 Date: 04/27/2015

Author: Lucic, Robert R (SHEEHAN PHINNEY BASS & GREEN), Sanoff, Robert S (SHEEHAN PHINNEY BASS & GREEN)

Addressee: Sherman, Ruthann (US EPA REGION 1)

Document Type: Letter

File Break: 05.01


583914 EMAIL REGARDING PROPOSAL TO CONSTRUCT CONNECTIONS TO EXISTING WATERLINE FOR FIVE RESIDENCES

# of Pages: 1 Date: 08/08/2015


Addressee: Sanoff, Robert S (FOLEY HOAG & ELIOT LLP), Jaffe, Seth D (FOLEY HOAG LLP), Lucic, Robert R (SHEEHAN PHINNEY), Tinkham, Judy M (TINKHAM REALTY)


File Break: 05.01


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579045 TRANSMITTAL EMAIL FOR PROPOSAL LETTER ON PUBLIC WATER SUPPLY CONNECTIONS AND SUPPLY WELL DECOMMISSIONING (EMAIL HISTORY ATTACHED)

# of Pages: 2 Date: 07/13/2015

Author: Phillips, Ian M (HALEY & ALDRICH INC)

Addressee: Sprague, Cheryl (US EPA REGION 1), Sherman, Ruthann (US EPA REGION 1)


File Break: 05.01


579046 LETTER REGARDING PUBLIC WATER SUPPLY CONNECTIONS AND SUPPLY WELL DECOMMISSIONING

# of Pages: 5 Date: 07/13/2015


Addressee: Sherman, Ruthann (US EPA REGION 1)


File Break: 05.01


580723 LETTER APPROVING INITIATION OF WATERLINE ACTIONS, WATER SUPPLY CONNECTIONS AND WELL DECOMMISSIONING

# of Pages: 2 Date: 07/23/2015

Author: Sprague, Cheryl L (US EPA REGION 1), Sherman, Ruthann (US EPA REGION 1)

Addressee: Phillips, Ian M (HALEY & ALDRICH INC), Sanoff, Robert S (FOLEY HOAG LLP)


File Break: 05.01


583905 TRANSMITTAL EMAIL FOR APPROVAL SIGNATURES FOR RESIDENTIAL WELL SAMPLING STANDARD OPERATING PROCEDURE (SOP) (EMAIL HISTORY ATTACHED)

# of Pages: 8 Date: 09/15/2015

Author: Sprague, Cheryl (US EPA REGION 1) Addressee: Richards, Ken (NH DEPT OF ENVIRONMENTAL SERVICES (NHDES))


File Break: 05.01


583906 STANDARD OPERATING PROCEDURE (SOP) FOR RESIDENTIAL WELL SAMPLING [MARGINALIA] # of Pages: 8 Date: 09/15/2015

Author: (HALEY & ALDRICH INC) Addressee: Document Type: Report

File Break: 05.01


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583724 DRAFT THIRD EXPLANATION OF SIGNIFICANT DIFFERENCES (ESD) FOR PUBLIC COMMENT ‐ OPERABLE UNIT (OU) 2

# of Pages: 26

Date: 10/01/2015

Author: (US EPA REGION 1) Addressee: Document Type: Report

File Break: 05.04


584047 LETTER PROVIDING COMMENTS ON DRAFT EXPLANATION OF SIGNIFICANT DIFFERENCES (ESD) # of Pages: 3 Date: 10/28/2015


Addressee: Sprague, Cheryl L (US EPA REGION 1)


File Break: 05.04


596769 EMAIL CONFIRMING AGREEMENT TO NOTE CONCURRENCE IN EXPLANATION OF SIGNIFICANT DIFFERENCES (ESD) RATHER THAN WITH FORMAL LETTER (EMAIL HISTORY ATTACHED)

# of Pages: 2 Date: 03/03/2016

Author: Richards, Kenneth (NH DEPT OF ENVIRONMENTAL SERVICES (NHDES))

Addressee: Sprague, Cheryl L (US EPA REGION 1), Jasinski, Michael (US EPA REGION 1), Mongeon, Robin (NONE)


File Break: 05.04


586297 THIRD EXPLANATION OF SIGNIFICANT DIFFERENCES (ESD) OPERABLE UNIT (OU) 2 # of Pages: 40

Date: 03/09/2016


File Break: 05.04


586298 RESPONSIVENESS SUMMARY FOR THIRD EXPLANATION OF SIGNIFICANT DIFFERENCES (ESD) # of Pages: 7 Date: 03/09/2016


File Break: 05.04


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Phase 06: REMEDIAL DESIGN (RD)

213048 REUSE ASSESSMENT # of Pages: 14

Date: 09/01/2004


File Break: 06.04


Phase 08: POST REMEDIAL ACTION

583908 MAP: SITE PLAN AND MONITORING LOCATIONS # of Pages: 1

Date: 03/16/2004

Author: (ROUX ASSOCIATES INC) Addressee: Document Type: Figure/Map/Drawing

File Break: 08.04


64915 SECOND FIVE‐YEAR REVIEW REPORT # of Pages: 25

Date: 03/30/2004

Author: (US EPA REGION 1) Addressee:

Document Type: Report

File Break: 08.03


583907 QUALITY ASSURANCE PROJECT PLAN (QAPP) MONITORED NATURAL ATTENUATION # of Pages: 290

Date: 05/11/2007

Author: (ROUX ASSOCIATES INC) Addressee: (CANNONS SITE GROUP) Document Type: Work Plan

File Break: 08.04


448615 THIRD FIVE‐YEAR REVIEW REPORT # of Pages: 169

Date: 03/24/2009


File Break: 08.03


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575104 AERIAL PHOTOGRAPH FROM BEDROCK WELL REPORT # of Pages: 1 Date: 01/01/2014

Author: Addressee: Document Type: Photograph

File Break: 08.03


583915 PROPOSED BEDROCK INVESTIGATION WORK PLAN # of Pages: 42

Date: 01/20/2014

Author: Phillips, Ian (ROUX ASSOCIATES INC)

Addressee: Lovely, William (US EPA REGION 1)


File Break: 08.05


579512 ANNUAL WATER QUALITY MONITORING REPORT FOR 2013 # of Pages: 188

Date: 01/24/2014

Author: (ROUX ASSOCIATES INC) Addressee: (CANNONS SITE GROUP) Document Type: Analytical Data Document

File Break: 08.04


583916 LETTER APPROVING PROPOSED BEDROCK INVESTIGATION WORK PLAN # of Pages: 1 Date: 02/13/2014

Author: Lovely, William (US EPA REGION 1) Addressee: Phillips, Ian M (HALEY & ALDRICH INC)


File Break: 08.05


583910 DRAFT REPORT ON FRACTURED‐BEDROCK EVALUATION # of Pages: 251

Date: 07/01/2014

Author: (HALEY & ALDRICH INC) Addressee: Lovely, William (US EPA REGION 1)

Document Type: Report

File Break: 08.04


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583909 LETTER PROVIDING COMMENTS ON 07/01/2014 DRAFT FRACTURED‐BEDROCK EVALUATION

# of Pages: 2 Date: 08/06/2014

Author: Lovely, William (US EPA REGION 1) Addressee: Phillips, Ian M (HALEY & ALDRICH INC)


File Break: 08.01


583193 FOURTH FIVE‐YEAR REVIEW REPORT # of Pages: 67

Date: 09/17/2014


File Break: 08.03


583911 WORK PLAN ON STANDPIPE INSTALLATION FOR DISCRETE‐ZONE MONITORING # of Pages: 11

Date: 10/22/2014

Author: (HALEY & ALDRICH INC), (CANNONS SITE GROUP)

Addressee: (US EPA REGION 1) Document Type: Work Plan

File Break: 08.05


585185 FRACTURED‐BEDROCK EVALUATION REPORT # of Pages: 251

Date: 10/24/2014

Author: (HALEY & ALDRICH INC), (CANNONS SITE GROUP)

Addressee: (US EPA REGION 1) Document Type: Report

File Break: 08.03


579513 ANNUAL WATER QUALITY MONITORING REPORT FOR 2014 # of Pages: 406

Date: 03/20/2015

Author: (HALEY & ALDRICH INC) Addressee: (CANNONS SITE GROUP) Document Type: Analytical Data Document

File Break: 08.04


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575106 [REDACTED] LETTER PROVIDING SUMMARY OF INFORMATION COLLECTED DURING WATER SUPPLY WELL SAMPLING CONDUCTED IN GILCREAST ROAD AREA OF LONDONDERRY, NH (SUPPORTING DOCUMENTATION ATTACHED)

# of Pages: 356

Date: 03/25/2015

Author: Mongeon, Robin (NH DEPT OF ENVIRONMENTAL SERVICES (NHDES))

Addressee: Jasinski, Michael (US EPA REGION 1)


File Break: 08.04


575146 [REDACTED] LETTER REGARDING SAMPLING OF IMPACTED WATER SUPPLY WELLS (02/23/2015 LABORATORY ANALYTICAL RESULTS ATTACHED)

# of Pages: 12

Date: 04/21/2015

Author: Fulton, Andrew C (NH DEPT OF ENVIRONMENTAL SERVICES (NHDES))

Addressee: (LONDONDERRY (NH) ‐ RESIDENT OF)


File Break: 08.04


Phase 09: STATE COORDINATION

571641 MEMO CONCERNING RESULTS OF WATER ANALYSES DONE ON SAMPLES FROM LONDONDERRY GREEN WELLS AND ONE PRIVATE WELL (02/14/1983 TRANSMITTAL LETTER ATTACHED)

# of Pages: 2 Date: 10/12/1982

Author: Allen, Dan H (NH WATER SUPPLY AND POLLUTION CONTROL COMMISSION)

Addressee: Strohm, Brian C (NH DIV OF PUBLIC HEALTH SERVICES)

Document Type: Memo

File Break: 09.10


571647 LETTER REGARDING SAMPLING OF APARTMENT COMPLEX WELL FOR PRESENCE OF VOLATILE ORGANIC CONTAMINANTS (10/29/1982 PRESS RELEASE AND 10/27/1982 ORGANICS/PRIORITY POLLUTANTS ANALYSIS ATTACHED)

# of Pages: 4 Date: 11/01/1982

Author: Donahue, Michael (NH WATER SUPPLY AND POLLUTION CONTROL COMMISSION)

Addressee: Sargent, Dennis (LONDONDERRY GREEN)


File Break: 09.10


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571646 LETTER REGARDING WATER TESTING AT LONDONDERRY GREEN APARTMENTS # of Pages: 2 Date: 11/16/1982

Author: Allen, Dan H (NH WATER SUPPLY AND POLLUTION CONTROL COMMISSION)

Addressee: Zipeto, John F (US EPA REGION 1)


File Break: 09.10


571637 PRELIMINARY ENGINEERING STUDY TO PROVIDE POTABLE WATER TO ROUTE 102 AREA IN LONDONDERRY (NH) FROM DERRY MUNICIPAL WATER SUPPLY SYSTEM FOR LONDONDERRY WATER COMMISSION

# of Pages: 25

Date: 12/01/1982

Author: (HOYLE TANNER & ASSOCIATES INC)

Addressee: Document Type: Report

File Break: 09.10


571645 LETTER REGARDING WATER LINE EXTENSION TO DERRY WELLS IN LONDONDERRY (NH) (01/07/1983 MEMO ATTACHED)

# of Pages: 3 Date: 01/18/1983


Addressee: Zipeto, John F (US EPA REGION 1)


File Break: 09.10


571644 LETTER REGARDING PREAUTHORIZATION OF EXPENDITURES ELIGIBLE FOR REIMBURSEMENT UNDER CERCLA

# of Pages: 2 Date: 01/31/1983

Author: Picco, Frederick J (LONDONDERRY (NH) TOWN OF), Arnold, Gordon R (LONDONDERRY (NH) TOWN OF), Day, Robert H (LONDONDERRY (NH) TOWN OF)

Addressee: Sutton, Lester A (US EPA REGION 1)


File Break: 09.10


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571643 LETTER REGARDING REQUEST FOR ASSISTANCE TO DEAL WITH IMMINENT HEALTH HAZARD IN LONDONDERRY (NH)

# of Pages: 2 Date: 02/08/1983

Author: Healy, William A (NH WATER SUPPLY AND POLLUTION CONTROL COMMISSION)

Addressee: Sutton, Lester A (US EPA REGION 1)


File Break: 09.10


571642 LETTER REGARDING WATER SITUATION AT LONDONDERRY GREEN APARTMENTS (01/28/1983 LETTER ATTACHED)

# of Pages: 3 Date: 02/10/1983

Author: Sattler, Rosanna (POSTERNAK BLANKSTEIN & LUND LLP)

Addressee: Healy, William A (NH WATER SUPPLY AND POLLUTION CONTROL COMMISSION)


File Break: 09.10


571639 MEMO REGARDING POSSIBLE WATER SUPPLY SOURCE NORTH OF ROUTE 102 IN LONDONDERRY (NH) (MAPS ATTACHED)

# of Pages: 4 Date: 02/15/1983

Author: Lucey, Bernard (NH DEPT OF ENVIRONMENTAL SERVICES (NHDES))

Addressee: Donahue, Michael (NH WATER SUPPLY AND POLLUTION CONTROL COMMISSION)

Document Type: Memo

File Break: 09.10


571640 LETTER REGARDING WATER SUPPLY SITUATION AT LONDONDERRY GREEN APARTMENTS # of Pages: 2 Date: 02/15/1983

Author: Healy, William A (NH WATER SUPPLY AND POLLUTION CONTROL COMMISSION)

Addressee: Sargent, Dennis (LONDONDERRY GREEN)


File Break: 09.10


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571638 LETTER REGARDING PLANS TO PROVIDE EMERGENCY AND LONG‐TERM WATER SUPPLY FOR LONDONDERRY GREEN APARTMENTS AND RESIDENCES ON MERCURY AND MCALLISTER DRIVES

# of Pages: 2 Date: 02/25/1983


Addressee: Cox, William (LONDONDERRY (NH) TOWN OF)


File Break: 09.10


Phase 11: POTENTIALLY RESPONSIBLE PARTIES (PRPS)

575103 LETTER REGARDING RESIDENTIAL GROUNDWATER CONTAMINATION AT SITE

# of Pages: 2 Date: 03/03/2015


Addressee: Sanoff, Robert S (FOLEY HOAG LLP)


File Break: 11.09


575102 LETTER REGARDING RESIDENTIAL GROUNDWATER CONTAMINATION AT SITE

# of Pages: 2 Date: 03/23/2015


Addressee: Tinkham, Judy M (NONE), Lucic, Robert R (SHEEHAN PHINNEY)


File Break: 11.09


Phase 13: COMMUNITY RELATIONS

583725 LETTER TRANSMITTING DRAFT THIRD EXPLANATION OF SIGNIFICANT DIFFERENCES (ESD) FOR PUBLIC COMMENT TO RESIDENTS

# of Pages: 2 Date: 09/30/2015

Author: Sprague, Cheryl L (US EPA REGION 1), Richards, Ken (NH DEPT OF ENVIRONMENTAL SERVICES (NHDES))

Addressee: Document Type: Letter

File Break: 13.01


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Phase 13: COMMUNITY RELATIONS

583732 NEWS RELEASE: EPA PROPOSES ADDITIONAL WATER LINE CONNECTIONS FOR GROUNDWATER CONTAMINATION AT TINKHAM GARAGE SUPERFUND SITE IN LONDONDERRY, NH

# of Pages: 2 Date: 10/05/2015

Author: (US EPA REGION 1) Addressee: Document Type: Publication

File Break: 13.03


583734 FACEBOOK POST REGARDING PROPOSED ADDITIONAL WATER LINE CONNECTIONS FOR RESIDENTS WITH GROUNDWATER CONTAMINATION AND PUBLIC MEETING 10/8/2015

# of Pages: 1 Date: 10/06/2015

Author: (US EPA REGION 1) Addressee: Document Type: Publication

File Break: 13.03


583740 AGENDA FOR PUBLIC MEETING SITE INFORMATION SESSION # of Pages: 1 Date: 10/08/2015

Author: (US EPA REGION 1) Addressee: Document Type: Meeting Document

File Break: 13.04


583741 NEWS ARTICLE: NEW CONTAMINATION DISCOVERIES PROMPT PLANS FOR TINKHAM GARAGE SUPERFUND SITE

# of Pages: 3 Date: 10/09/2015

Author: Okun, Eli (UNION LEADER) Addressee: Document Type: Publication

File Break: 13.03


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Phase 17: SITE MANAGEMENT RECORDS

575107 TECHNICAL FACT SHEET ‐ 1,4‐DIOXANE # of Pages: 8 Date: 01/01/2014

Author: (US EPA) Addressee: Document Type: Publication

File Break: 17.07


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AR Collection 63964

Explanation of Significant Differences (ESD), 03‐09‐2016, Privileged Documents




575105 LETTER PROVIDING SUMMARY OF INFORMATION COLLECTED DURING WATER SUPPLY WELL SAMPLING CONDUCTED IN GILCREAST ROAD AREA OF LONDONDERRY, NH (SUPPORTING DOCUMENTATION ATTACHED)

# of Pages: 356

Date: 03/25/2015

Author: Mongeon, Robin (NH DEPT OF ENVIRONMENTAL SERVICES (NHDES))

Addressee: Jasinski, Michael (US EPA REGION 1)


File Break: 08.04

Access Type: Controlled/Privacy

575145 LETTER REGARDING SAMPLING OF IMPACTED WATER SUPPLY WELLS (02/23/2015 LABORATORY ANALYTICAL RESULTS ATTACHED)

# of Pages: 12

Date: 04/21/2015

Author: Fulton, Andrew C (NH DEPT OF ENVIRONMENTAL SERVICES (NHDES))

Addressee: Antonucci, James (LONDONDERRY (NH) ‐ RESIDENT OF)


File Break: 08.04

Access Type: Controlled/Privacy

DOCNUMBER DOCDATE TITLE OSWEREPAID4001 01‐Feb‐88 GUIDANCE DOCUMENT FOR PROVIDING ALTERNATE WATER SUPPLIES OSWER #9355.3‐03

C737 24‐Sep‐10UPDATE ON PROVIDING ALTERNATIVE WATER SUPPLY AS PART OF SUPERFUND RESPONSE ACTIONS OSWER 9355.3‐22

C875 20‐Sep‐10 REVISED GUIDANCE ON COMPILING ADMINISTRATIVE RECORDS FOR CERCLA RESPONSE

Selected Key Guidance DocumentsEPA Guidance Documents may be reviewed at the OSRR Records and Information Center in Boston, MA