Site Report: Collinson Point DEW Line POL Pipeline Corridor

Site Name:	Collinson Point DEW Line POL Pipeline Corridor
Address:	Simpson Cove; Camden Bay, ~30 Miles SW of Kaktovik, Kaktovik, AK 99747
File Number:	380.38.002
Hazard ID:	25328
Status:	Cleanup Complete
Staff:	No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude:	69.979167
Longitude:	-144.834444
Horizontal Datum:	WGS84

We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.

Site Chronology
IC / Closure Details
Documents
Associated Sites

Problems/Comments

This is about 3,000 feet from Camden Bay consisting of about 3,000 feet of of 6.5-inch pipe , parallel to the beach of Camden Bay to the pumphouse and AST pad. Two removal actions decommissioned the pipeline in 1996 and 2000. Contaminated soil was identified and removed only to the extent necessary to remove pipeline. Analytical results at the limits of the excavations showed DRO remaining up to 5700 mg/kg, with no delineation to determine extent. Target action levels were initially 200 mg/kg, aligning with Method 1 or migration to groundwater, likely due to proximity to Simpson Cove.

Action Information

Action Date	Action	Description	DEC Staff
7/1/1985	Site Added to Database	A new site has been added to the database (Date adjusted from 1/12/2009 for report/query consistency. (Reese))	Mitzi Read
7/1/1985	Preliminary Assessment Approved	(Old R:Base Action Code = SI - Site Investigation). Alaska District conducted site investigations in July 1985 and September 1987. Water, soil, and POL samples were collected in 1985. Environmental and archaeological studies were conducted during both visits.	Former Staff
4/3/1992	Site Added to Database	Multiple contaminants.	Former Staff
4/3/1992	Site Ranked Using the AHRM	Initial ranking.	Former Staff
6/22/1992	Update or Other Action	(Old R:Base Action Code = SI - Site Investigation). Staff reviewed Pre-Design Final Report dated March, 1992. Report contains previous sampling data and defines regulatory levels for site contaminants.	Laura Noland
6/24/1992	Meeting or Teleconference Held	Met with Corps of Engineers and USF&WS to establish cleanup levels and cleanup methods for summer of 1993 work. The Corps plan to conduct remediation as they continue to define extend of contamination.	Laura Noland
9/8/1992	Update or Other Action	(Old R:Base Action Code = RPL2 - Site Information Request Letter). ADEC staff sent PRP-CS Database Notification letter to RP requesting update and more environmental information concerning contaminated site. Jim Levine\COE called 10-5-92 and responded by returning updated DECRPTs.	Jeff Peterson
4/28/1993	Update or Other Action	(Old R:Base Action Code = CORR - Correspondence (General)). Staff sent ADEC proposed action levels for cleanup at site to E&E's Brian Miskel.	Marcus Ortelee
5/13/1993	Cleanup Level(s) Approved	(Old R:Base Action Code = CORR - Correspondence (General)). ADEC staff sent a letter to Gail Braten of COE, on action levels for soil and gravel pad cleanup levels. ADEC and USFWS worked together to establish levels based on health and ecological criteria.	Marcus Ortelee
8/27/1993	Update or Other Action	Proposal document received.	Bob Couch
3/1/1994	Cleanup Plan Approved	(Old R:Base Action Code = RDRA - Remedial Design / Remedial Action). A removal action awarded for BD/DR and HTRW (DACA85-94-C-0010) and is still underway.	Former Staff
5/5/1995	Update or Other Action	Field report for the Removal Action at Collinson Point Intermed. DEW Line Station indicate that the contractor removed 14.78 tons of the POL pipeline, along with ~700 gallons of product during decommissioning. This may have equated to 820 lineal feet of 6-inch pipe from the northern beach end.	John Carnahan
3/18/1997	Update or Other Action	Site updated by Shannon and Wilson, based on FUDS Site Summary dated 2/21/96.	Former Staff
5/29/2001	Site Characterization Report Approved	Sent comment letter today on draft removal action report. The report described demolition and site characterization work completed during July 2000. All of the structures were removed and disposed of off-site, surface stained soil was excavated, miscellaneous debris removed. Remaining contamination in sediments and soil. PCBs above 1 mg/kg is of concern along with cumulative risk from multiple VOCs. Comment letter indicated CSM should be completed and cumulative risk calculation should be completed. Concerns exist about a potential dump site at the DEW Line. (Carnahan Amendment - 11/2/18: It is unclear what the cleanup goals were for the Pipeline Corridor. They initial targeted action level was 200 mg/kg in 2002, but no official CUL was established for this site that ran along a beach in close proximity to Simpson Cove.)	Ann Farris
11/1/2001	Document, Report, or Work plan Review - other	Final Remedial Action Report - Collinson Point (EMCON). This report documented the 2000 missioning of the pipeline and the collection of 42 samples at the limits of excavation. Benzene and BTEX were below soil action levels of 0.5 and 10 mg/kg respectively. GRO exceeded 100 mg/kg at one location at 150 mg/kg (911SL). Ten samples for DRO exceeded the soil action level of 200 mg/kg with concentrations ranging between 490 mg/kg to 4,100 mg/kg. Where pipelines were located within the gravel pad, excavation was limited to the depth required to free the line and did not extend into the tundra.	John Carnahan
1/17/2003	Update or Other Action	Staff received Draft No DOD Action Indicated Report today. Review is pending.	Ann Farris
8/1/2003	Update or Other Action	Staff changed from Farris to Caillouet	Debra Caillouet
8/27/2003	Update or Other Action	Staff sent a letter to the Corp requesting additional information. Public comment had been recieved indicating that there may be risk remaining at the site. Until this is resolved DEC can not concur with the NDAI.	Debra Caillouet
4/12/2004	Site Characterization Workplan Approved	Sampling and Analysis Plan, Post-Remedial Action/Site Restoration Investigation, Collinson Point DEW Line Site was reviewed. (Carnahan amendment - 11/2/18: There was no apparent work conducted specific to the Pipeline Corridor Site.)	Debra Caillouet
10/14/2004	Meeting or Teleconference Held	Staff attended RAB meeting in Kaktovik	Debra Caillouet
1/25/2005	Meeting or Teleconference Held	Staff attended RAB meeting in Kaktovik	Debra Caillouet
3/23/2005	Site Characterization Report Approved	Final Chemical Data Report was received and it incorporated response to comments. The analytical results from this sampling event show bottom sediments from both the Debris Pond and the AST pond are contaminated, as is the surface water in the AST Pond. Additionally, elevated levels of PCBs were found in concrete samples collected from the former Composite Building garage slab. The analytical results for samples collected from the Southwest Pond, Quonset Hut #3, and the surface soils surrounding the former Composite Building garage did not exceed ADEC cleanup criteria. The majority of the debris at Marsh Creek appeared benign, and was likely deposited by storm or ice action. Bottom sediment samples collected from the Debris Pond contained POL above the ADEC soil cleanup levels, as well as PCBs above the NOAA Probable Effects Level; due to the persistent nature of PCBs, it is unlikely that the concentrations of this contaminate will decrease significantly over time. The contaminated sediment in the Debris Pond is covered with a variety of metallic and wooden debris, which will need to be addressed is a removal action is determined to be required to close this site. Bottom sediment samples collected from the AST Pond contained POL above soil cleanup levels as well as low molecular weight PAH above the NOAA Upper Effects Threshold. Analytical results from this pond exceeded groundwater criteria, but no sheen was noted and TAH and TAqH were below 18 AAC 70 levels. Concrete samples from the surface of the former Composite building garage slab continued PCBs above 25 ppm. PCBs in surface soil samples collected from around the slab were below cleanup level, however previous results were above. Additional remedial/removal efforts may be required for this site, specifically at the Debris Pond, the AST Pond, and the former Composite Building garage slab. Although the landscape may appear blemished due to the presence of rusted 55-gallon drums and drum carcasses littered across the tundra the debris is not eligible for cleanup under FUDS.	Debra Caillouet
5/3/2005	Meeting or Teleconference Held	Staff attended RAB meeting in Kaktovik	Debra Caillouet
7/20/2007	Update or Other Action	Staff reviewed and sent comments to the USACE on the draft remedial investigation work plan.	Debra Caillouet
9/27/2007	Update or Other Action	Staff sent the USACE comment on Rev 1 of the RI work plan	Debra Caillouet
10/11/2007	Exposure Tracking Model Ranking		Debra Caillouet
10/26/2007	Site Characterization Workplan Approved	final comments were addressed	Debra Caillouet
12/26/2007	Update or Other Action	Staff reviewed the draft remedial investigation report and prepared significant comments.	Debra Caillouet
6/6/2008	Site Characterization Report Approved	The final remedial investigation report for 2007 was approved. The report documents the use of silica gel cleanup that biased all DR) and RRO results low. The data can be used qualitatively to determine the remedial actions needed.	Debra Caillouet
12/11/2008	Document, Report, or Work plan Review - other	Staff reviewed and sent major comment to the Corps on the draft RI/FS.	Debra Caillouet
1/13/2009	Exposure Tracking Model Ranking	Initial ranking with ETM completed for source area id: 78684 name: POL Pipeline Corridor	Debra Caillouet
2/22/2010	Update or Other Action	The Final Ecoscoping Forms and Ecological Conceptual Site Models, Collinson Point and Nuvagapak Point, DEW Line Stations, February 2010 were received. The ecoscoping indicates the need for a screening level risk assessment.	Debra Caillouet
7/28/2010	Risk Assessment Report Approved	The Final Preliminary Screening Evaluation and Ecological Conceptual Site Models, Collinson Point and Nuvagapak Point, DEW Line Stations July 2010 were approved. Based on the information in these documents ADEC does not believe there is a need to proceed to an ecological risk assessment. While some of the exceedances if the ecological screening levels are significant, if the sites are cleaned up to Method II levels these will be minimized. It is believed that if a full risk assessment was done, the size of the impacts and the quality of the habitat would demonstrate that there is no significant ecological risk.	Debra Caillouet
10/29/2010	Document, Report, or Work plan Review - other	Comments were sent on the Collinson Point Distant Early Warning Line Station, Revised Draft Remedial Investigation/Feasibility Study Report, October 2010	Debra Caillouet
7/28/2011	CERCLA FS	Final Remedial Investigation/Feasibility Study Report Collinson Point Distant Early Warning Line Station, Collinson Point Alaska, May 2011	Debra Caillouet
11/18/2014	CERCLA Remedial Design/Remedial Action Plan Approved	Final Work Plan, Collinson Point and Nuvagapak Point Remedial Action	Debra Caillouet
11/23/2015	Update or Other Action	Site management transferred to Carnahan.	John Carnahan
8/21/2016	Update or Other Action	DEC approves (via email) modifications to workplan to extend the use of the available pad area to within 10 feet of the edge (with adequate berms), and increasing thickness of soil to be treated to 12 inches. DEC also will allow the use of fertilizers to enhance the nutrient viability of the soil if determined appropriate.	John Carnahan
2/17/2017	Document, Report, or Work plan Review - other	Provided comments on Draft RI Report for multiple sites.	John Carnahan
11/16/2018	Document, Report, or Work plan Review - other	Provide comments on FUDS Closeout Report; however, the Closeout Report had no reference to this site.	John Carnahan
1/7/2019	Update or Other Action	DEC sent letter to COE requesting action to clarify site information. The site established contaminant levels as high as 5,000 mg/kg in soil, but the site dropped from further assessment following a No DOD Action Indicated determination.	John Carnahan
11/7/2019	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 78684 POL Pipeline Corridor.	Sammi Castle
1/15/2020	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 78684 POL Pipeline Corridor.	Melinda Brunner
3/20/2020	Cleanup Complete Determination Issued	DEC issued a cleanup complete determination for this site on 20 March 2020.	Melinda Brunner

Action Date

Action

Description

DEC Staff

7/1/1985

Site Added to Database

A new site has been added to the database (Date adjusted from 1/12/2009 for report/query consistency. (Reese))

Mitzi Read

7/1/1985

Preliminary Assessment Approved

(Old R:Base Action Code = SI - Site Investigation). Alaska District conducted site investigations in July 1985 and September 1987. Water, soil, and POL samples were collected in 1985. Environmental and archaeological studies were conducted during both visits.

Former Staff

4/3/1992

Site Added to Database

Multiple contaminants.

Former Staff

4/3/1992

Site Ranked Using the AHRM

Initial ranking.

Former Staff

6/22/1992

Update or Other Action

(Old R:Base Action Code = SI - Site Investigation). Staff reviewed Pre-Design Final Report dated March, 1992. Report contains previous sampling data and defines regulatory levels for site contaminants.

Laura Noland

6/24/1992

Meeting or Teleconference Held

Met with Corps of Engineers and USF&WS to establish cleanup levels and cleanup methods for summer of 1993 work. The Corps plan to conduct remediation as they continue to define extend of contamination.

Laura Noland

9/8/1992

Update or Other Action

(Old R:Base Action Code = RPL2 - Site Information Request Letter). ADEC staff sent PRP-CS Database Notification letter to RP requesting update and more environmental information concerning contaminated site. Jim Levine\COE called 10-5-92 and responded by returning updated DECRPTs.

Jeff Peterson

4/28/1993

Update or Other Action

(Old R:Base Action Code = CORR - Correspondence (General)). Staff sent ADEC proposed action levels for cleanup at site to E&E's Brian Miskel.

Marcus Ortelee

5/13/1993

Cleanup Level(s) Approved

(Old R:Base Action Code = CORR - Correspondence (General)). ADEC staff sent a letter to Gail Braten of COE, on action levels for soil and gravel pad cleanup levels. ADEC and USFWS worked together to establish levels based on health and ecological criteria.

Marcus Ortelee

8/27/1993

Update or Other Action

Proposal document received.

Bob Couch

3/1/1994

Cleanup Plan Approved

(Old R:Base Action Code = RDRA - Remedial Design / Remedial Action). A removal action awarded for BD/DR and HTRW (DACA85-94-C-0010) and is still underway.

Former Staff

5/5/1995

Update or Other Action

Field report for the Removal Action at Collinson Point Intermed. DEW Line Station indicate that the contractor removed 14.78 tons of the POL pipeline, along with ~700 gallons of product during decommissioning. This may have equated to 820 lineal feet of 6-inch pipe from the northern beach end.

John Carnahan

3/18/1997

Update or Other Action

Site updated by Shannon and Wilson, based on FUDS Site Summary dated 2/21/96.

Former Staff

5/29/2001

Site Characterization Report Approved

Sent comment letter today on draft removal action report. The report described demolition and site characterization work completed during July 2000. All of the structures were removed and disposed of off-site, surface stained soil was excavated, miscellaneous debris removed. Remaining contamination in sediments and soil. PCBs above 1 mg/kg is of concern along with cumulative risk from multiple VOCs. Comment letter indicated CSM should be completed and cumulative risk calculation should be completed. Concerns exist about a potential dump site at the DEW Line. (Carnahan Amendment - 11/2/18: It is unclear what the cleanup goals were for the Pipeline Corridor. They initial targeted action level was 200 mg/kg in 2002, but no official CUL was established for this site that ran along a beach in close proximity to Simpson Cove.)

Ann Farris

11/1/2001

Document, Report, or Work plan Review - other

Final Remedial Action Report - Collinson Point (EMCON). This report documented the 2000 missioning of the pipeline and the collection of 42 samples at the limits of excavation. Benzene and BTEX were below soil action levels of 0.5 and 10 mg/kg respectively. GRO exceeded 100 mg/kg at one location at 150 mg/kg (911SL). Ten samples for DRO exceeded the soil action level of 200 mg/kg with concentrations ranging between 490 mg/kg to 4,100 mg/kg. Where pipelines were located within the gravel pad, excavation was limited to the depth required to free the line and did not extend into the tundra.

John Carnahan

1/17/2003

Update or Other Action

Staff received Draft No DOD Action Indicated Report today. Review is pending.

Ann Farris

8/1/2003

Update or Other Action

Staff changed from Farris to Caillouet

Debra Caillouet

8/27/2003

Update or Other Action

Staff sent a letter to the Corp requesting additional information. Public comment had been recieved indicating that there may be risk remaining at the site. Until this is resolved DEC can not concur with the NDAI.

Debra Caillouet

4/12/2004

Site Characterization Workplan Approved

Sampling and Analysis Plan, Post-Remedial Action/Site Restoration Investigation, Collinson Point DEW Line Site was reviewed. (Carnahan amendment - 11/2/18: There was no apparent work conducted specific to the Pipeline Corridor Site.)

Debra Caillouet

10/14/2004

Meeting or Teleconference Held

Staff attended RAB meeting in Kaktovik

Debra Caillouet

1/25/2005

Meeting or Teleconference Held

Staff attended RAB meeting in Kaktovik

Debra Caillouet

3/23/2005

Site Characterization Report Approved

Final Chemical Data Report was received and it incorporated response to comments. The analytical results from this sampling event show bottom sediments from both the Debris Pond and the AST pond are contaminated, as is the surface water in the AST Pond. Additionally, elevated levels of PCBs were found in concrete samples collected from the former Composite Building garage slab. The analytical results for samples collected from the Southwest Pond, Quonset Hut #3, and the surface soils surrounding the former Composite Building garage did not exceed ADEC cleanup criteria. The majority of the debris at Marsh Creek appeared benign, and was likely deposited by storm or ice action. Bottom sediment samples collected from the Debris Pond contained POL above the ADEC soil cleanup levels, as well as PCBs above the NOAA Probable Effects Level; due to the persistent nature of PCBs, it is unlikely that the concentrations of this contaminate will decrease significantly over time. The contaminated sediment in the Debris Pond is covered with a variety of metallic and wooden debris, which will need to be addressed is a removal action is determined to be required to close this site. Bottom sediment samples collected from the AST Pond contained POL above soil cleanup levels as well as low molecular weight PAH above the NOAA Upper Effects Threshold. Analytical results from this pond exceeded groundwater criteria, but no sheen was noted and TAH and TAqH were below 18 AAC 70 levels. Concrete samples from the surface of the former Composite building garage slab continued PCBs above 25 ppm. PCBs in surface soil samples collected from around the slab were below cleanup level, however previous results were above. Additional remedial/removal efforts may be required for this site, specifically at the Debris Pond, the AST Pond, and the former Composite Building garage slab. Although the landscape may appear blemished due to the presence of rusted 55-gallon drums and drum carcasses littered across the tundra the debris is not eligible for cleanup under FUDS.

Debra Caillouet

5/3/2005

Meeting or Teleconference Held

Staff attended RAB meeting in Kaktovik

Debra Caillouet

7/20/2007

Update or Other Action

Staff reviewed and sent comments to the USACE on the draft remedial investigation work plan.

Debra Caillouet

9/27/2007

Update or Other Action

Staff sent the USACE comment on Rev 1 of the RI work plan

Debra Caillouet

10/11/2007

Exposure Tracking Model Ranking

Debra Caillouet

10/26/2007

Site Characterization Workplan Approved

final comments were addressed

Debra Caillouet

12/26/2007

Update or Other Action

Staff reviewed the draft remedial investigation report and prepared significant comments.

Debra Caillouet

6/6/2008

Site Characterization Report Approved

The final remedial investigation report for 2007 was approved. The report documents the use of silica gel cleanup that biased all DR) and RRO results low. The data can be used qualitatively to determine the remedial actions needed.

Debra Caillouet

12/11/2008

Document, Report, or Work plan Review - other

Staff reviewed and sent major comment to the Corps on the draft RI/FS.

Debra Caillouet

1/13/2009

Exposure Tracking Model Ranking

Initial ranking with ETM completed for source area id: 78684 name: POL Pipeline Corridor

Debra Caillouet

2/22/2010

Update or Other Action

The Final Ecoscoping Forms and Ecological Conceptual Site Models, Collinson Point and Nuvagapak Point, DEW Line Stations, February 2010 were received. The ecoscoping indicates the need for a screening level risk assessment.

Debra Caillouet

7/28/2010

Risk Assessment Report Approved

The Final Preliminary Screening Evaluation and Ecological Conceptual Site Models, Collinson Point and Nuvagapak Point, DEW Line Stations July 2010 were approved. Based on the information in these documents ADEC does not believe there is a need to proceed to an ecological risk assessment. While some of the exceedances if the ecological screening levels are significant, if the sites are cleaned up to Method II levels these will be minimized. It is believed that if a full risk assessment was done, the size of the impacts and the quality of the habitat would demonstrate that there is no significant ecological risk.

Debra Caillouet

10/29/2010

Document, Report, or Work plan Review - other

Comments were sent on the Collinson Point Distant Early Warning Line Station, Revised Draft Remedial Investigation/Feasibility Study Report, October 2010

Debra Caillouet

7/28/2011

CERCLA FS

Final Remedial Investigation/Feasibility Study Report Collinson Point Distant Early Warning Line Station, Collinson Point Alaska, May 2011

Debra Caillouet

11/18/2014

CERCLA Remedial Design/Remedial Action Plan Approved

Final Work Plan, Collinson Point and Nuvagapak Point Remedial Action

Debra Caillouet

11/23/2015

Update or Other Action

Site management transferred to Carnahan.

John Carnahan

8/21/2016

Update or Other Action

DEC approves (via email) modifications to workplan to extend the use of the available pad area to within 10 feet of the edge (with adequate berms), and increasing thickness of soil to be treated to 12 inches. DEC also will allow the use of fertilizers to enhance the nutrient viability of the soil if determined appropriate.

John Carnahan

2/17/2017

Document, Report, or Work plan Review - other

Provided comments on Draft RI Report for multiple sites.

John Carnahan

11/16/2018

Document, Report, or Work plan Review - other

Provide comments on FUDS Closeout Report; however, the Closeout Report had no reference to this site.

John Carnahan

1/7/2019

Update or Other Action

DEC sent letter to COE requesting action to clarify site information. The site established contaminant levels as high as 5,000 mg/kg in soil, but the site dropped from further assessment following a No DOD Action Indicated determination.

John Carnahan

11/7/2019

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 78684 POL Pipeline Corridor.

Sammi Castle

1/15/2020

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 78684 POL Pipeline Corridor.

Melinda Brunner

3/20/2020

Cleanup Complete Determination Issued

DEC issued a cleanup complete determination for this site on 20 March 2020.

Melinda Brunner

Contaminant Information

Name	Level Description	Media	Comments
DRO	< Method 2 Most Stringent	Soil	Compared against Method 2 cleanup levels for the Arctic zone.

Name

Level Description

Media

Comments

DRO

< Method 2 Most Stringent

Soil

Compared against Method 2 cleanup levels for the Arctic zone.

Control Type

Type	Details
No ICs Required

Type

Details

No ICs Required

Requirements

Description	Details
Advance approval required to transport soil or groundwater off-site.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)

Description

Details

Advance approval required to transport soil or groundwater off-site.

Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)

2019 Collinson Pt. DEW POL Pipeline Corridor Cleanup Complete Determination

No associated sites were found.

Missing Location Data

Because the GIS location data for this site has not been entered, we cannot direct you to its position on the map. Click "Continue" to proceed to the Contaminated Sites Web Map or "Close" to return to the site report.

Continue Close

Alaska Department of Environmental Conservation

Site Report: Collinson Point DEW Line POL Pipeline Corridor

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

2019 Collinson Pt. DEW POL Pipeline Corridor Cleanup Complete Determination

Missing Location Data

State of Alaska Department of Environmental Conservation