Site Report: Barter Island LRRS Refueling Area (CG002)

Site Name:	Barter Island LRRS Refueling Area (CG002)
Address:	West of Hangar, Barter Island Runway, Kaktovik, AK 99747
File Number:	350.38.009
Hazard ID:	4222
Status:	Cleanup Complete
Staff:	No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude:	70.135797
Longitude:	-143.591262
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

Aircraft fueling and maintenance occurs on the south side of the Refueling Area. It contains numerous ASTs, drums, conexes, and sheds. The southside of the Refueling area is also used as a third party fuel storage area. The majority of samples in 2005 contained GRO and DRO above Method One soil cleanup levels; two samples had GRO above Method Two cleanup levels. In addition, benzene and total xylenes exceeded Method Two cleanup levels in one sample.

Action Information

Action Date	Action	Description	DEC Staff
4/14/2006	Site Added to Database	GRO, DRO, benzene, and total xylenes are documented above cleanup levels.	Bill Petrik
4/14/2006	Site Ranked Using the AHRM	Initial site ranking.	Bill Petrik
4/14/2006	GIS Position Updated	Coordinates approximate. Used TopoZone Pro in conjunction with site maps and "Figure 1-1, Barter Island LRRS 2005 Investigation Sites, Photo Date 2000," from a report titled "U.S. Air Force, Barter Island LRRS, Alaska, Environmental Restoration Program, Investigation Report for Six Sites, Draft," February 2006. Low to moderate confidence in accuracy because no aerial photography for the area available in TopoZone Pro. Recommend GPSing the site to improve accuracy. Scale=1:48K.	Bill Petrik
4/24/2006	Update or Other Action	File number issued 350.38.009.	Aggie Blandford
6/22/2006	Site Characterization Report Approved	Refueling Area This area is west of the hangar building in the air terminal area. The Beaufort Sea is approximately 150 feet north of the area; most of the site is unvegetated gravel pad. The site was divided into two areas for the purposes of reporting. The northern site had maximum detections of 594 mg/Kg GRO, 3900 mg/Kg DRO and 11,000 mg/Kg RRO. BTEX and PAHs were below 1/10th of the Method Two cleanup levels. The southern site had maximum detections of 1820 mg/Kg GRO, 3730 mg/Kg DRO, benzene 36.6 mg/Kg, ethylbenzene 31.5, toluene 146 mg/Kg and xylenes 143 mg/Kg. PAHs were below 1/10th of the Method Two cleanup levels. The report recommends additional soil sampling to determine the lateral and vertical extent of the contamination. DEC concurs.	Debra Caillouet
2/27/2007	Interim Removal Action Approved	Petroleum contamination, primarily from aviation gasoline, was prevalent throughout the Refueling Area north of the runway. Approximately 1,353 yd3 of petroleum-contaminated soil was removed from three excavations. The interim removal action was effective in removing the most significantly contaminated soils. There are still small areas with GRO above Method Two cleanup levels and large areas with GRO and DRO above Method One cleanup levels in the vicinity of the former fuel containment cells. In addition, BTEX concentrations are elevated in the pore water in proximity to the beach.	Debra Caillouet
5/18/2007	Cleanup Level(s) Approved	Petroleum contamination, primarily from aviation gasoline, was prevalent throughout the Refueling Area north of the runway. Approximately 1,353 cubic yards of petroleum-contaminated soil was removed from three excavations. The interim removal action was effective in removing the most significantly contaminated soils. There are still small areas with GRO above Method 2 cleanup levels and large areas with GRO and DRO above Method 1 cleanup levels near the former fuel containment cells. In addition, benzene, toluene, ethylbenzene, and xylenes (BTEX) concentrations are elevated in the pore water in proximity to the beach. TAH/TAqH in the pore water was measured at 255/255 ìg/l near the northwest limit of the excavation and at 135/147 ìg/l further downgradient. The report recommends in-situ landfarming to remediate the soil to 750 mg/kg GRO, 2000 mg/kg DRO, 13 mg/kg benzene, 89 mg/kg ethylbenzene, 180 mg/kg toluene, and 81 mg/kg xylenes. This would remove the majority of the source and be followed with monitored natural attenuation to reach the most stringent soil cleanup levels and achieve closure of the site. Pore water would be monitored until it was below the TAH/TAqH standard of 10/15 ìg/l at the groundwater/surface water interface with the Beaufort Sea. Well points would be used as sentinel wells and would be placed as close as practical to the shoreline, approximately five feet from the mean high tide line. DEC concurs with the proposed cleanup plan and cleanup levels for the Refueling Area.	Debra Caillouet
5/18/2007	Site Characterization Report Approved	The Final, 2006 Remedial Action and EBS Sampling Report, Barter Island LRRS, April 2007 was approved.	Debra Caillouet
7/12/2007	Cleanup Plan Approved	The work plan for landfarming the soil at the refueling area in-situ was approved. The plan also included ex-situ landfarming for the soil that was excavated during clean sweep activities that could not be disposed in the local landfill or shipped off-site. This soil was stockpiled in front of the A train and will be relocated to the former tank farm for landfarming.	Debra Caillouet
10/1/2007	Update or Other Action	The Status Report Number One, Barter Island Landfarming was reviewed. Comments were sent to the Air Force as shown below: 1. In the next status report, please provide a description of the MI sample collection locations, methods, screening and subsampling. 2. DEC is concerned that when the soil was removed from the stockpile to the Western landfarm, the confirmation sampling of its footprint shows contamination remaining. Please make arrangements to have the contaminated soil transferred to the Western landfarm so that it can be treated with the other soil or make arrangements to have it tilled in place. A short memo should be prepared for this action and include sampling to demonstrate that no further contamination remains at the former location of the stockpiled soil.	Debra Caillouet
10/9/2007	Exposure Tracking Model Ranking		Debra Caillouet
3/24/2008	Update or Other Action	The 2007 Landfarm Status report confirms the footprint of the former stockpile location in front of the A train contains DRO at 550 mg/Kg. The report speculates that the DRO is from an overfill or leak in the past associated with the B train that was previously in this location. The area that contains the DRO is within the proposed location for the new landfill that will be used to contain the contents of the eroding LF001. The Air Force will need to screen the area as it is excavated to receive the waste.	Debra Caillouet
3/24/2008	Update or Other Action	Staff sent comment on the 2007 Landfarming report to the Air Force.	Debra Caillouet
6/19/2008	Cleanup Plan Approved	Staff approved the addendum for landfarming.	Debra Caillouet
12/12/2008	Document, Report, or Work plan Review - other	Comments were sent to the Air Force on the 2008 Landfarm Status Report and Former Refueling Area and Cleanup Complete Request to the Alaska Department of Environmental Conservation Draft December 2008. DEC does not concur that the site is eligible for a cleanup complete determination.	Debra Caillouet
9/8/2009	Long Term Monitoring Established		Debra Caillouet
9/8/2009	Update or Other Action	Staff approved the work plan for long-term monitoring.	Debra Caillouet
12/3/2009	Document, Report, or Work plan Review - other	Long Term Monitoring Report, Former Refueling Area, Barter Island LRRS, November 2009. The report describes the sampling of four monitoring points at the point of compliance for the former refueling area. Total Aqueous Hydrocarbons and compliance with the Alaska Water Quality Standards are being monitored at the point the suprapermafrost groundwater discharges to the Beaufort Sea. Benzene was detected up to 10 µg/l above the 5 µg/l standard. A trend has not been established and monitoring is recommended to continue.	Debra Caillouet
12/15/2010	Document, Report, or Work plan Review - other	2010 ERP Activities at Four Sites, Barter Island LRRS, Draft December, 2010 The report documents the installation of signage for the new landfill and to identify the restrictions on SS013 and SS014. Sampling results from the former refueling area show that there is a continuing exceedance of benzene at the groundwater surface water interface. It also documents the conditions of the landfill cap and the current conditions at the former landfill LF001. The report makes several recommendations for future actions. ADEC concurs with these and requests the Air Force make the arrangements for the actions to occur. The recommendations are listed specifically below. 1. Former Refueling Area, sample again in the fall of 2011 and replace WP-11 with a new well point (WP-15) to be located east of WP-14. 2. SS-013, Former Heated Storage, a minimum of one more surface water sampling event to meet the requirement of two consecutive sampling events showing the surface water below the Alaska Water Quality Standards. 3. New landfill, grading for areas of minor subsidence and erosion and seeding of the north side to minimize future erosion. 4. Former landfill LF-001, grading to fill subsidence cracks and seeding to minimize premature erosion and insulate the remaining permafrost. This report does document that part of the institutional controls (ICs)for SS-013 and SS-014 have been implemented. The other part of the ICs for these sites required by the Record of Decision is the recording of the land use restrictions in the Base Master Plan. When the Air Force supplies documentation that this has happened, ADEC will be able to issue a determination that the cleanup is complete with institutional controls. These sites (SS013 and SS014) will require a Five Year Review. This should be scheduled to be complete by September 4, 2014.	Debra Caillouet
8/8/2011	Document, Report, or Work plan Review - other	Final Work Plan for 2011 Environmental Restoration Program Activities at Five Sites, Draft, Barter Island Long Range Radar Station, August 2011 The work plan incorporates acceptable responses to previously supplied comment, ADEC has no objection to the implementation of the work.	Debra Caillouet
8/22/2011	Document, Report, or Work plan Review - other	Final Work Plan for 2011 Environmental Restoration Program Activities at Five Sites, Barter Island Long Range Radar Station, August 2011 The document incoporoates acceptable response to previously supplied comment. ADEC has no objection to the implementation of the described work.	Debra Caillouet
4/20/2012	Document, Report, or Work plan Review - other	Technical Project Report, Final, Environmental Long Term Monitoring and Maintenance, Barter Island Long Range Radar Station, April 2012 Monitoring and Maintenance at Barter Island LRRS annual monitoring of the active zone groundwater should continue until it has been demonstrated that BTEX concentrations are decreasing, and that two consecutive sampling events have shown BTEX results below the AWQS and ADEC method two groundwater and surface water cleanup levels.	Debra Caillouet
6/14/2012	Document, Report, or Work plan Review - other	Environmental Restoration Program Activities at Five Sites, Barter Island Long Range Radar Station, Draft Work Plan June 2012. ADEC has no objection to the implementation of the plan.	Debra Caillouet
5/2/2013	Document, Report, or Work plan Review - other	Technical Project Report, Final Environmental Long Term Management, Barter Island Long Range Radar Station, April 2013	Debra Caillouet
9/12/2013	Document, Report, or Work plan Review - other	Final Work Plan Draft, Environmental Long Term Management Activities at Sites CG002, LF001, SS013, SS014 and New CERCLA Landfill, Barter Island Long Range Radar Station, September 2013	Debra Caillouet
12/26/2013	Institutional Control Periodic Reporting	First CERCLA Five-Year Review and First Non-CERCLA Periodic Review Report, Barter Island LRRS, Final November 2013 The report accurately describes the conditions at five sites associated with the Barter Island LRRS: • SITE LF001 (NEW CERCLA LANDFILL) • SITE SS013 (FORMER HEATED STORAGE BUILDING) • SITE SS014 (GARAGE) • SITE SS011 (AIR TERMINAL FUEL STORAGE) • SITE CG002 (FORMER REFUELING AREA). The CERCLA Five Year Review and the Non-CERCLA review conclude that the remedies are still functioning as designed and are protective. ADEC concurs with this conclusion.	Debra Caillouet
4/15/2014	Document, Report, or Work plan Review - other	The 2013 LTM final report shows the sampling to have occurred after freeze up. The results were below cleanup levels, but they are not accepted as the groundwater flow was minimal.	Debra Caillouet
12/29/2014	Document, Report, or Work plan Review - other	Technical Project Report, Draft, Environmental Long Tem Management, Barter Island Long Range Radar Station, December 20141. All VOC/BTEX results are to be qualified as biased low, due to the temperature exceedence and inability to determine which cooler the specific samples were in. As the BTEX results were above cleanup levels at CG002 ADEC will accept the results as qualified low.	Debra Caillouet
3/2/2015	Document, Report, or Work plan Review - other	Technical Project Report, Final, Environmental Long Tem Management, Barter Island Long Range Radar Station, February 2015	Debra Caillouet
4/5/2016	Document, Report, or Work plan Review - other	Technical Project Report, Final, Environmental Long Tem Management, Barter Island Long Range Radar Station, March 2016	John Carnahan
6/21/2016	Document, Report, or Work plan Review - other	Approve FINAL Supplemental Work Plan, Environmental Long Term Management Activities at Sites CG002, SS013, and SS014	John Carnahan
9/29/2016	Meeting or Teleconference Held	Barrow RAB Meeting held. Debenham in attendance.	John Carnahan
1/17/2017	Update or Other Action	Stephen Krause replaces Lori Roy as the AF RPM for Barter, Bullen, Wainwright, Lisburne, Point Lonely, Oliktok, Lake Louise, Big Mtn and Duncan Canal.	John Carnahan
6/9/2017	Update or Other Action	[UPDATE TO CLOSURE DETERMINATION[ Continued annual monitoring of active zone water for BTEX compounds was prescribed until two consecutive sampling events yielded concentrations below the water quality standards. Monitoring at CG002 was conducted at four temporary well points from 2011–2016. Well points were located as close to the original well point locations from 2008 and sampled at depths ranging 0.9–3 feet below ground surface, with the temporary points removed following each year’s annual sampling event. Results from the 2015–2016 active zone groundwater monitoring satisfied DEC’s annual monitoring requirements to demonstrate site cleanup with groundwater analytical results below water quality standards for two consecutive sampling events. Remaining benzene documented at the well points ranged 0.2–3.1 µg/L.	John Carnahan
6/9/2017	Cleanup Complete Determination Issued		John Carnahan

Action Date

Action

Description

DEC Staff

4/14/2006

Site Added to Database

GRO, DRO, benzene, and total xylenes are documented above cleanup levels.

Bill Petrik

4/14/2006

Site Ranked Using the AHRM

Initial site ranking.

Bill Petrik

4/14/2006

GIS Position Updated

Coordinates approximate. Used TopoZone Pro in conjunction with site maps and "Figure 1-1, Barter Island LRRS 2005 Investigation Sites, Photo Date 2000," from a report titled "U.S. Air Force, Barter Island LRRS, Alaska, Environmental Restoration Program, Investigation Report for Six Sites, Draft," February 2006. Low to moderate confidence in accuracy because no aerial photography for the area available in TopoZone Pro. Recommend GPSing the site to improve accuracy. Scale=1:48K.

Bill Petrik

4/24/2006

Update or Other Action

File number issued 350.38.009.

Aggie Blandford

6/22/2006

Site Characterization Report Approved

Refueling Area This area is west of the hangar building in the air terminal area. The Beaufort Sea is approximately 150 feet north of the area; most of the site is unvegetated gravel pad. The site was divided into two areas for the purposes of reporting. The northern site had maximum detections of 594 mg/Kg GRO, 3900 mg/Kg DRO and 11,000 mg/Kg RRO. BTEX and PAHs were below 1/10th of the Method Two cleanup levels. The southern site had maximum detections of 1820 mg/Kg GRO, 3730 mg/Kg DRO, benzene 36.6 mg/Kg, ethylbenzene 31.5, toluene 146 mg/Kg and xylenes 143 mg/Kg. PAHs were below 1/10th of the Method Two cleanup levels. The report recommends additional soil sampling to determine the lateral and vertical extent of the contamination. DEC concurs.

Debra Caillouet

2/27/2007

Interim Removal Action Approved

Petroleum contamination, primarily from aviation gasoline, was prevalent throughout the Refueling Area north of the runway. Approximately 1,353 yd3 of petroleum-contaminated soil was removed from three excavations. The interim removal action was effective in removing the most significantly contaminated soils. There are still small areas with GRO above Method Two cleanup levels and large areas with GRO and DRO above Method One cleanup levels in the vicinity of the former fuel containment cells. In addition, BTEX concentrations are elevated in the pore water in proximity to the beach.

Debra Caillouet

5/18/2007

Cleanup Level(s) Approved

Petroleum contamination, primarily from aviation gasoline, was prevalent throughout the Refueling Area north of the runway. Approximately 1,353 cubic yards of petroleum-contaminated soil was removed from three excavations. The interim removal action was effective in removing the most significantly contaminated soils. There are still small areas with GRO above Method 2 cleanup levels and large areas with GRO and DRO above Method 1 cleanup levels near the former fuel containment cells. In addition, benzene, toluene, ethylbenzene, and xylenes (BTEX) concentrations are elevated in the pore water in proximity to the beach. TAH/TAqH in the pore water was measured at 255/255 ìg/l near the northwest limit of the excavation and at 135/147 ìg/l further downgradient. The report recommends in-situ landfarming to remediate the soil to 750 mg/kg GRO, 2000 mg/kg DRO, 13 mg/kg benzene, 89 mg/kg ethylbenzene, 180 mg/kg toluene, and 81 mg/kg xylenes. This would remove the majority of the source and be followed with monitored natural attenuation to reach the most stringent soil cleanup levels and achieve closure of the site. Pore water would be monitored until it was below the TAH/TAqH standard of 10/15 ìg/l at the groundwater/surface water interface with the Beaufort Sea. Well points would be used as sentinel wells and would be placed as close as practical to the shoreline, approximately five feet from the mean high tide line. DEC concurs with the proposed cleanup plan and cleanup levels for the Refueling Area.

Debra Caillouet

5/18/2007

Site Characterization Report Approved

The Final, 2006 Remedial Action and EBS Sampling Report, Barter Island LRRS, April 2007 was approved.

Debra Caillouet

7/12/2007

Cleanup Plan Approved

The work plan for landfarming the soil at the refueling area in-situ was approved. The plan also included ex-situ landfarming for the soil that was excavated during clean sweep activities that could not be disposed in the local landfill or shipped off-site. This soil was stockpiled in front of the A train and will be relocated to the former tank farm for landfarming.

Debra Caillouet

10/1/2007

Update or Other Action

The Status Report Number One, Barter Island Landfarming was reviewed. Comments were sent to the Air Force as shown below: 1. In the next status report, please provide a description of the MI sample collection locations, methods, screening and subsampling. 2. DEC is concerned that when the soil was removed from the stockpile to the Western landfarm, the confirmation sampling of its footprint shows contamination remaining. Please make arrangements to have the contaminated soil transferred to the Western landfarm so that it can be treated with the other soil or make arrangements to have it tilled in place. A short memo should be prepared for this action and include sampling to demonstrate that no further contamination remains at the former location of the stockpiled soil.

Debra Caillouet

10/9/2007

Exposure Tracking Model Ranking

Debra Caillouet

3/24/2008

Update or Other Action

The 2007 Landfarm Status report confirms the footprint of the former stockpile location in front of the A train contains DRO at 550 mg/Kg. The report speculates that the DRO is from an overfill or leak in the past associated with the B train that was previously in this location. The area that contains the DRO is within the proposed location for the new landfill that will be used to contain the contents of the eroding LF001. The Air Force will need to screen the area as it is excavated to receive the waste.

Debra Caillouet

3/24/2008

Update or Other Action

Staff sent comment on the 2007 Landfarming report to the Air Force.

Debra Caillouet

6/19/2008

Cleanup Plan Approved

Staff approved the addendum for landfarming.

Debra Caillouet

12/12/2008

Document, Report, or Work plan Review - other

Comments were sent to the Air Force on the 2008 Landfarm Status Report and Former Refueling Area and Cleanup Complete Request to the Alaska Department of Environmental Conservation Draft December 2008. DEC does not concur that the site is eligible for a cleanup complete determination.

Debra Caillouet

9/8/2009

Long Term Monitoring Established

Debra Caillouet

9/8/2009

Update or Other Action

Staff approved the work plan for long-term monitoring.

Debra Caillouet

12/3/2009

Document, Report, or Work plan Review - other

Long Term Monitoring Report, Former Refueling Area, Barter Island LRRS, November 2009. The report describes the sampling of four monitoring points at the point of compliance for the former refueling area. Total Aqueous Hydrocarbons and compliance with the Alaska Water Quality Standards are being monitored at the point the suprapermafrost groundwater discharges to the Beaufort Sea. Benzene was detected up to 10 µg/l above the 5 µg/l standard. A trend has not been established and monitoring is recommended to continue.

Debra Caillouet

12/15/2010

Document, Report, or Work plan Review - other

2010 ERP Activities at Four Sites, Barter Island LRRS, Draft December, 2010 The report documents the installation of signage for the new landfill and to identify the restrictions on SS013 and SS014. Sampling results from the former refueling area show that there is a continuing exceedance of benzene at the groundwater surface water interface. It also documents the conditions of the landfill cap and the current conditions at the former landfill LF001. The report makes several recommendations for future actions. ADEC concurs with these and requests the Air Force make the arrangements for the actions to occur. The recommendations are listed specifically below. 1. Former Refueling Area, sample again in the fall of 2011 and replace WP-11 with a new well point (WP-15) to be located east of WP-14. 2. SS-013, Former Heated Storage, a minimum of one more surface water sampling event to meet the requirement of two consecutive sampling events showing the surface water below the Alaska Water Quality Standards. 3. New landfill, grading for areas of minor subsidence and erosion and seeding of the north side to minimize future erosion. 4. Former landfill LF-001, grading to fill subsidence cracks and seeding to minimize premature erosion and insulate the remaining permafrost. This report does document that part of the institutional controls (ICs)for SS-013 and SS-014 have been implemented. The other part of the ICs for these sites required by the Record of Decision is the recording of the land use restrictions in the Base Master Plan. When the Air Force supplies documentation that this has happened, ADEC will be able to issue a determination that the cleanup is complete with institutional controls. These sites (SS013 and SS014) will require a Five Year Review. This should be scheduled to be complete by September 4, 2014.

Debra Caillouet

8/8/2011

Document, Report, or Work plan Review - other

Final Work Plan for 2011 Environmental Restoration Program Activities at Five Sites, Draft, Barter Island Long Range Radar Station, August 2011 The work plan incorporates acceptable responses to previously supplied comment, ADEC has no objection to the implementation of the work.

Debra Caillouet

8/22/2011

Document, Report, or Work plan Review - other

Final Work Plan for 2011 Environmental Restoration Program Activities at Five Sites, Barter Island Long Range Radar Station, August 2011 The document incoporoates acceptable response to previously supplied comment. ADEC has no objection to the implementation of the described work.

Debra Caillouet

4/20/2012

Document, Report, or Work plan Review - other

Technical Project Report, Final, Environmental Long Term Monitoring and Maintenance, Barter Island Long Range Radar Station, April 2012 Monitoring and Maintenance at Barter Island LRRS annual monitoring of the active zone groundwater should continue until it has been demonstrated that BTEX concentrations are decreasing, and that two consecutive sampling events have shown BTEX results below the AWQS and ADEC method two groundwater and surface water cleanup levels.

Debra Caillouet

6/14/2012

Document, Report, or Work plan Review - other

Environmental Restoration Program Activities at Five Sites, Barter Island Long Range Radar Station, Draft Work Plan June 2012. ADEC has no objection to the implementation of the plan.

Debra Caillouet

5/2/2013

Document, Report, or Work plan Review - other

Technical Project Report, Final Environmental Long Term Management, Barter Island Long Range Radar Station, April 2013

Debra Caillouet

9/12/2013

Document, Report, or Work plan Review - other

Final Work Plan Draft, Environmental Long Term Management Activities at Sites CG002, LF001, SS013, SS014 and New CERCLA Landfill, Barter Island Long Range Radar Station, September 2013

Debra Caillouet

12/26/2013

Institutional Control Periodic Reporting

First CERCLA Five-Year Review and First Non-CERCLA Periodic Review Report, Barter Island LRRS, Final November 2013 The report accurately describes the conditions at five sites associated with the Barter Island LRRS: • SITE LF001 (NEW CERCLA LANDFILL) • SITE SS013 (FORMER HEATED STORAGE BUILDING) • SITE SS014 (GARAGE) • SITE SS011 (AIR TERMINAL FUEL STORAGE) • SITE CG002 (FORMER REFUELING AREA). The CERCLA Five Year Review and the Non-CERCLA review conclude that the remedies are still functioning as designed and are protective. ADEC concurs with this conclusion.

Debra Caillouet

4/15/2014

Document, Report, or Work plan Review - other

The 2013 LTM final report shows the sampling to have occurred after freeze up. The results were below cleanup levels, but they are not accepted as the groundwater flow was minimal.

Debra Caillouet

12/29/2014

Document, Report, or Work plan Review - other

Technical Project Report, Draft, Environmental Long Tem Management, Barter Island Long Range Radar Station, December 20141. All VOC/BTEX results are to be qualified as biased low, due to the temperature exceedence and inability to determine which cooler the specific samples were in. As the BTEX results were above cleanup levels at CG002 ADEC will accept the results as qualified low.

Debra Caillouet

3/2/2015

Document, Report, or Work plan Review - other

Technical Project Report, Final, Environmental Long Tem Management, Barter Island Long Range Radar Station, February 2015

Debra Caillouet

4/5/2016

Document, Report, or Work plan Review - other

Technical Project Report, Final, Environmental Long Tem Management, Barter Island Long Range Radar Station, March 2016

John Carnahan

6/21/2016

Document, Report, or Work plan Review - other

Approve FINAL Supplemental Work Plan, Environmental Long Term Management Activities at Sites CG002, SS013, and SS014

John Carnahan

9/29/2016

Meeting or Teleconference Held

Barrow RAB Meeting held. Debenham in attendance.

John Carnahan

1/17/2017

Update or Other Action

Stephen Krause replaces Lori Roy as the AF RPM for Barter, Bullen, Wainwright, Lisburne, Point Lonely, Oliktok, Lake Louise, Big Mtn and Duncan Canal.

John Carnahan

6/9/2017

Update or Other Action

[UPDATE TO CLOSURE DETERMINATION[ Continued annual monitoring of active zone water for BTEX compounds was prescribed until two consecutive sampling events yielded concentrations below the water quality standards. Monitoring at CG002 was conducted at four temporary well points from 2011–2016. Well points were located as close to the original well point locations from 2008 and sampled at depths ranging 0.9–3 feet below ground surface, with the temporary points removed following each year’s annual sampling event. Results from the 2015–2016 active zone groundwater monitoring satisfied DEC’s annual monitoring requirements to demonstrate site cleanup with groundwater analytical results below water quality standards for two consecutive sampling events. Remaining benzene documented at the well points ranged 0.2–3.1 µg/L.

John Carnahan

6/9/2017

Cleanup Complete Determination Issued

John Carnahan

Contaminant Information

Name	Level Description	Media	Comments
DRO	< Table C	GroundwaterGroundwater	Two consecutive sampling events below Table C.

Name

Level Description

Media

Comments

DRO

< Table C

GroundwaterGroundwater

Two consecutive sampling events below Table C.

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)

Cleanup Complete Determination for Site CG002

No associated sites were found.

Missing Location Data

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Site Report: Barter Island LRRS Refueling Area (CG002)

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Cleanup Complete Determination for Site CG002

Missing Location Data

State of Alaska Department of Environmental Conservation