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NPL Site

Administrative Record

Addendum I

Index

Compiled: April 7, 1994

BSD Signed: July 11, 1994

Region I

Waste Management Division

U.S. Environmental Protection Agency
INTRODUCTION

This document is the Index to the Administrative Record

Addendum I for the Explanation of Significant Differences for the

O'Connor National Priorities List (NPL) site. Section I of the

Index cites site-specific documents, and Section II cites

guidance documents used by EPA staff in selecting a response

action for this site.

This Administrative Record is available for public review

at EPA Region I, 90 Canal Street, Boston, Massachusetts, and at

the Lithgow Public Library, Winthrop Street, Augusta, Maine.

Questions concerning the Administrative Record should be

addressed to the EPA Region I site manager. Additional volumes

may be added to this Administrative Record.

The Administrative Record is required by the Comprehensive

Environmental Response Compensation, and Liability Act (CERCLA),

as amended by the Superfund Amendments and Reauthorization Act

(SARA).
Section I

Site-Specific Documents
ADMINISTRATIVE RECORD ADDENDUM INDEX

for the

O'Connor Superfund NPL Site

Explanation of Significant Differences

4.0 Feasibility Study

4.1 Interim Deliverables

1. Memorandum from Ann Marie Burke, EPA Region I

Toxicologist, to Ross Gilleland, EPA Remedial

Project Manager, dated April 5, 1994 concerning

risk calculations.

5.0 Record of Decision

5.1 Correspondence

1. Letter from Charles R. Nickerson, P.E., Central

Maine Power, to Ross L. Gilleland, EPA Region I,

dated November 9, 1992 concerning New Site

Information with attached Figure I, and Appendices

A, B, and C.

2. Letter from Alan M. Prysunka, Director, Bureau of

Hazardous Material and Solid Waste Control, Maine

Department of Envrionmental Protection dated June

20, 1994 concerning Explanation of Significant

Differences.

5.2 Applicable or Relevant and Appropriate Requirements

1. Letter from Ross L. Gilleland, EPA Region I, to

Allen Bingham, Maine Department of Environmental

Protection, dated January 18, 1993 concerning

Applicable or Relevant and Appropriate

Requirements.

2. Letter from Allen J. Bingham, Maine Department of

Environmental Protection, to Ross Gilleland, EPA

Region I, dated February 10, 1993 concerning

Applicable or Relevant and Appropriate

Requirements.

3. Letter from Joanne O. Morin, GEI Consultants,

Inc., to Charlie Nickerson, Central Maine Power

Company dated April 7, 1994 concerning the PCB

disposal Requirements promulgated under the Toxic

Substances Control Act (TSCA).
5.4 Record Decision

1. Draft "Explanation of Significant Differences,"

EPA Region I (April 1994).

2. "Explanation of Significant Differences," EPA

Region I (July 11, 1994) .

6.0 Remedial Design

6.4 Remedial Pre-Design Documents

Oversized Attachments associated with entry number 1

may be reviewed, by appointed only, at EPA Region I

Waste Management Division Records Center in Boston,

Massachusetts.

1. "Source Control Sampling Report," prepared by GEI

Consultants, Inc. for Central Maine Power (October

22, 1991) .

Oversized Attachments associated with entry number 2

may be reviewed, by appointed only, at EPA Region I

Waste Management Division Records Center in Boston,

Massachusetts.

2. "Source Control Summary Report Bench-scale

Treatability Study Volume I" (Report, Tables, and

Figures), prepared by GEI Consultants, Inc. for

Central Maine Power (January 14, 1992) .

3. "Source Control Summary Report Bench-scale

Treatability Study Volume II" (Appendices A, B, &

C), prepared by GEI Consultants, Inc. for Central

Maine Power (January 14, 1992).

4. "Source Control Summary Report Bench-scale

Treatability Study Volume III" (Appendices D, & E

only), prepared by GEI Consultants, Inc. for

Central Maine Power (January 14, 1992) .

5. "Source Control Summary Report Bench-scale

Treatability Study: Supplemental Information

Volume I of II," prepared by GEI Consultants, Inc.

for Central Maine Power (January 14, 1992).
6. "Source Control Summary Report Bench-scale

Treacabillty Study: Supplemental Information

Volume II of II," prepared by GEI Consultants,

Inc. for Central Maine Power (January 14, 1992) .

7. "Comprehensive Draft Source Control Summary Report

Pilot-scale Treatability Study," prepared by GEI

Consultants, Inc. for Central Maine Power (January

21, 1993).

8. Comments dated May 18, 1993 from Allen J. Bingham,

State of Maine Department of Environmental

Protection, on the January 21, 1993 "Comprehensive

Draft Source Control Summary Report Pilot-scale

Treatability Study," prepared by GEI Consultants,

Inc. for Central Maine Power Company.

9. Comments dated June 3, 1993 from Mark C. Meckes,

EPA Office of Research and Development, on the

January 21, 1993 "Comprehensive Draft Source

Control Summary Report Pilot-scale Treatability

Study," prepared by GEI Consultants, Inc. for

Central Maine Power Company.

10. Comments dated August 27, 1993 from Mary Jane

O'Donnell, EPA Region I, on the January 21, 1993

"Comprehensive Draft Source Control Summary Report'

Pilot-scale Treatability Study," prepared by GEI

Consultants, Inc. for Central Maine Power Company.

11. "Response to the U.S. Environmental Protection

Agency's (EPA) Comments on the Comprehensive Draft

Source Control Summary Report Pilot-scale

. Treatability Study," prepared by GEI Consultants,

Inc. for Central Maine Power (October 29, 1993) .

Oversized Attachments associated with entry number 12

may be reviewed, by appointed only, at EPA Region I

Waste Management Division Records Center in Boston,

Massachusetts.

12. "Revision 1, Comprehensive Draft Source Control

Summary Report Pilot-scale Treatability Study,"

prepared by GEI Consultants, Inc. for Central

Maine Power (November 1, 1993) .
6.6 Work Plans and Progress Reports

1. "Source Control Sampling and Analysis Plan,

Volume I - Quality Assurance Project Plan,"

prepared by GEI Consultants, Inc. for Central •

Maine Power (March 28, 1991).

Oversized Attachments associated with entry number 2

may be reviewed, by appointed only, at EPA Region I

Waste Management Division Records Center in Boston,

Massachusetts.

2. "Source Control Sampling and Analysis Plan,

Volume II - Field Sampling Plan," prepared by GEI

Consultants, Inc. for Central Maine Power (March

28, 1991).

3. "Source Control Pre-design Work Plan," (for benchscale treatability studies) prepared by GEI

Consultants, Inc. for Central Maine Power (August

7, 1991).

4. "Trip Report for Oversight Activities" (Pre-design

sampling and analysis) prepared by CDM Federal

Programs Corporation, for the U.S. EPA (November

4, 1991).

5. "Trip Report for Oversight Activities" (VLF

survey) prepared by CDM Federal Programs

Corporation, for the U.S. EPA (March 22, 1992) .

Oversized Attachments associated with entry number 6

may be reviewed, by appointed only, at EPA Region I

Waste Management Division Records Center in Boston,

Massachusetts.

6. "Source Control Pilot-scale Treatability Study

Work Plan," GEI Consultants, Inc. for Central

Maine Power (June 19, 1992) .

Oversized Attachments associated with entry number 7

may be reviewed, by appointed only, at EPA Region I

Waste Management Division Records Center in Boston,

Massachusetts.

7. "Source Control Pilot-scale Project Operations

Plan, Volume I - Site Management Plan and

Community Support Plan," GEI Consultants, Inc. for

Central Maine Power (June 19, 1992).
Oversized Attachments associated with entry number 8

may be reviewed, by appointed only, at EPA Region I

Waste Management Division Records Center in Boston,

Massachusetts.

8. "Source Control Pilot-scale Project Operations

Plan, Volume II - Sampling & Analysis Plan - Field

Sampling Plan," GEI Consultants, Inc. for Central

Maine Power (June 19, 1992).

9. "Source Control Pilot-scale Project Operations

Plan, Volume III - Sampling & Analysis Plan -

Quality Assurance Project Plan," GEI Consultants,

Inc. for Central Maine Power (June 19, 1992) .

10. "Trip Report I for Oversight of the Source Control

Pilot-scale Treatability Study Activities,"

prepared by CDM Federal Programs Corporation for

the U.S. EPA (September 2, 1992) .

11. "Trip Report II for Oversight of the Source

Control Pilot-scale Treatability Study

Activities," prepared by CDM Federal Programs

Corporation for the U.S. EPA (September 15, 1992) .

12. "Trip Report III for Oversight of the Source

Control Pilot-scale Treatability Study

Activities," prepared by CDM Federal Programs

Corporation for the U.S. EPA (September 30, 1992).

13. "Trip Report IV for Oversight of the Source

Control Pilot-scale Treatability Study

Activities," prepared by CDM Federal Programs

Corporation for the U.S. EPA (September 30, 1992) .

14. "Trip Report V for Oversight of the Source Control

Pilot-scale Treatability Study Activities,"

prepared by CDM Federal Programs Corporation for

the U.S. EPA (September 30, 1992).

15. "Trip Report VI for Oversight of the Source

Control Pilot-scale Treatability Study

Activities," prepared by CDM Federal Programs

Corporation for the U.S. EPA (October 27, 1992).

16. "Trip Report VII for Oversight of the Source

Control Pilot-scale Treatability Study

Activities," prepared by CDM Federal Programs

Corporation for the U.S. EPA (October 27, 1992).

17. "Trip Report VIII for Oversight of the Source

Control Pilot-scale Treatability Study

Activities," prepared by CDM Federal Programs
Corporation for the U.S. EPA (October 27, 1992).

18. "Source Control Scope of Work for Supplemental

Treatability Testing," March 11, 1993.

13.0 Community Relations

13.5 Fact Sheets/Information Updates

1. "A Citizen's Guide to Innovative Treatment

Technologies," EPA Office of Solid Waste and

Emergency Response (March 1992) .

2. "A Citizen's Guide to Solvent Extraction," EPA

Office of Solid Waste and Emergency Response

(March 1992) .

3. . "A Citizen's Guide to How Innovative Treatment

Technologies Are Being Successfully Applied at

Superfund Sites," EPA Office of Solid Waste and

Emergency Response (March 1992) .

4. "PRPs to Test Cleanup Technologies for O'Connor

Site," EPA Region I (June-1992) .

-~

"Minor changes made to O'Connor cleanup plan," EPA

Region I (April 1994) .
Section II

Guidance Documents
GUIDANCE DOCUMENTS

EPA guidance documents may be reviewed at EPA Region I, Boston,

Massachusetts.

General EPA Guidance Documents

1. U.S. Environmental Protection Agency. Office of Solid Waste

and Emergency Response "Interim Guidance on Non-Liquid PCB

Disposal Methods to Be Used as Alternatives to a 40 CFR

761.75 Chemical Waste Landfill," (OSWER Directive No.

9355.4-01), July 3, 1990.

2. U.S. Environmental Protection Agency. Office of Emergency

and Remedial Response. Guidance on Remedial Actions for

Superfund Sites with PCB Contamination (OSWER Directive No.

9355.4-01), August 1990.

3. U.S. Environmental Protection Agency. Office of Research and ^~ , n //*-|

Development. Risk Assessment Guidance for Superfund; Volume L ' ' t_J

I - Human Health Evaluation Manual (EPA/540/R-92/003),

December 1991.

4. U.S. Environmental Protection Agency. Office of Research and

Development. Dermal Exposure Assessment: Principles and

Applications, Interim Report (EPA/600/8-91/011B), January

1992.