Site Report: Cape Newenham LRRS - Air Force

Site Name:	Cape Newenham LRRS - Air Force
Address:	Cape Newenham peninsula, near Platinum, AK., Platinum, AK 99651
File Number:	2525.38.001
Hazard ID:	22874
Status:	Active
Staff:	Sarah Bernhardt, 9072697527 sarah.bernhardt@alaska.gov
Latitude:	58.647405
Longitude:	-162.172723
Horizontal Datum:	NAD83

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

10,000 UST near Composite Building was removed in 1991. Diesel contamination encountered during removal action; highest concentration exceeded 10,000 mg/kg. A bioventing system was installed at the site in 1995 to remediate the diesel contamination. This site is being used to track cleanups at all sites in the Cape Newenham LRRS, except SS08 and SS007.

Action Information

Action Date	Action	Description	DEC Staff
9/14/1993	Leaking Underground Storage Tank Release Confirmed - Petroleum	LUST Site created in CSP for source area ID 75824 Pollution Discharge Report (CDRL A034) and Tank Removal report (dated September 6, 1991) received on September 14, 1993. John Halverson, ADEC project manager.	Former Staff
9/14/1993	Site Added to Database		Former Staff
1/1/1994	Leaking Underground Storage Tank Corrective Action Underway	Corrective Action Design (Spill 92-251-330-1) Draft Remedial Action Decision report prepared by Martin Marietta Services; no final received. John Halverson, ADEC project manager.	Gretchen Pikul
9/25/1995	Leaking Underground Storage Tank Cleanup Initiated - Petroleum	ADEC sent a Closure of Compliance Advisory letter dated September 19, 1994, UST Facility # 569. Both sites within Lower Camp. Ray Burger, ADEC project manager.	Gretchen Pikul
7/1/1996	Document, Report, or Work plan Review - other	Revised Final Management Action Plan (dated June 1996) received on July 1, 1996. Ray Burger, ADEC project manager.	Gretchen Pikul
1/8/1997	Underground Storage Tank Site Characterization or Assessment	Final Site Assessment / Release Investigation (dated December 1996) prepared for 611th Civil Engineer Squadron and by ASRC Contracting Company, Inc.; received by ADEC on January 8, 1997. Gretchen Pikul, ADEC project manager.	Gretchen Pikul
12/15/1997	Leaking Underground Storage Tank Corrective Action Underway	Environmental Cleanup Plan and Quality Program Plan, Pipeline Removal (draft dated March 1997, received on May 7, 1997, final dated June 1997 and received on December 15, 1997); teleconference on June 6, 1997; ADEC comment letter dated June 25, 1997. Gretchen Pikul, ADEC project manager.	Gretchen Pikul
1/9/1998	Document, Report, or Work plan Review - other	Management Action Plan (draft dated July 25, 1997, final dated January 9, 1998); ADEC comment letter dated December 4, 1997. Gretchen Pikul, ADEC project manager.	Gretchen Pikul
11/12/1998	Document, Report, or Work plan Review - other	Technical Report - Study/Services, Pipeline Removal (draft dated October 1997; final dated October 1998; received on November 12, 1998); ADEC comment letter dated December 24, 1997; December 17, 1998 telephone call with Air Force on future cleanup actions necessary to close site; note - interim removal action under 611th compliance section. Gretchen Pikul, ADEC project manager.	Gretchen Pikul
9/6/2000	Document, Report, or Work plan Review - other	Environmental Work and Quality Plans, Follow-on Environmental Compliance (UST Removal) - draft dated August 2000; ADEC comment letter dated September 2000. Both sites within Lower Camp. Gretchen Pikul, ADEC project manager.	Gretchen Pikul
4/20/2001	Document, Report, or Work plan Review - other	Technical Report - Follow-on Environmental Compliance (UST Removal) draft dated December 2000, received on January 2, 2001, ADEC comment letter dated April 20, 2001. Both sites within Lower Camp. Gretchen Pikul, ADEC project manager.	Gretchen Pikul
6/30/2004	Update or Other Action	RECKEY has automatically been generated.	Former Staff
2/17/2009	Cleanup Level(s) Approved	Contaminated Sites staff reviewed and approved a request for an alternative cleanup level for DRO impacted soil at the Cape Newenham Long Range Radar Station. About 300-cubic yards of soil were stockpiled in biocells originating from underground storage tank removals in the late 1990’s. Total organic carbon in the area is over 6%, with the average DRO concentration in the piles at around 800 mg/kg. The responsible party is coordinating with the Solid Waste Section to see about using the contaminated soil as landfill cover	Jeff Brownlee
3/3/2010	Exposure Tracking Model Ranking	Initial ranking with ETM completed for source area id: 75824 name: autogenerated pm edit - Cape Newenham LRRS - Air Force	Curtis Dunkin
8/29/2017	Document, Report, or Work plan Review - other	Staff reviewed draft supplemental long term monitoring work plan titled 2017-2018 Remedial Action Operations, Land Use/Institutional Control Cape Newenham Long Range Radar Station Sites CS545, SS007, and TA001 dated August 2017 and received electronically by the ADEC on August 18, 2017 for an expedited review, and provided comments to the Air Force.	Wendy Hansen
9/7/2017	Document, Report, or Work plan Review - other	ADEC provided comments on Draft Site Characterization Report for petroleum Sites CS545 and TA001, dated March 2017 and received by the ADEC on April 3, 2017. The report documented results of investigation activities that occurred in 2016.	Wendy Hansen
9/8/2017	Document, Report, or Work plan Review - other	Staff approved supplemental long term monitoring work plan titled 2017-2018 Remedial Action Operations, Land Use/Institutional Control Cape Newenham Long Range Radar Station Sites CS545, SS007, and TA001 dated August 2017.	Wendy Hansen
1/2/2018	Document, Report, or Work plan Review - other	Staff reviewed and provided comments for the Draft 2017 Technical Project Report Remedial Action Operations, Land Use/Institutional Control Report dated December 2017 and submitted on December 22, 2017.	Wendy Hansen
1/17/2018	Document, Report, or Work plan Review - other	ADEC reviewed the Air Forces responses to comment on the Draft Site Characterization Report for petroleum Sites CS545 and TA001, and associated Draft Final document dated November 2017. Additional comments were provided. The report documented results of investigation activities that occurred in 2016, and recommended Cleanup Complete with Institutional Controls (CC w/ICs) for each Site CS545 and TA001. For CS545, further evaluation of potential non-petroleum sources is needed. For TA001, site characterization is not complete and petroleum remains above maximum allowable concentrations.	Wendy Hansen
5/2/2018	Update or Other Action	ADEC sent a response letter to USAF regarding an April 18, 2018 request for approval to trench in the vicinity of CS545. The ADEC did not object to the USAF proceeding without a soil management plan because the activities proposed are limited to a small area at a depth below ground surface not known to be contaminated, but recommended one due to concern that the Cape Newenham facility has not been fully characterized for non-petroleum COPCs.	Wendy Hansen
8/20/2018	Document, Report, or Work plan Review - other	DEC approved the Final 2016 Long Term Monitoring Report, Final Summary Report 2016 Remedial Action Operations, Land Use/ Institutional Control Cape Newenham LRRS, dated July 2018. DEC comments have been addressed.	Wendy Hansen
8/23/2018	Document, Report, or Work plan Review - other	DEC approved the Final 2017 Long Term Monitoring Report, Final 2017 Technical Project Report 2017 Remedial Action Operations, Land Use/Institutional Control Cape Newenham LRRS, dated August 2018. DEC comments have been addressed. This report was also applicable for CS545 and TA001 interim LUCs.	Wendy Hansen
10/22/2018	Site Characterization Report Approved	ADEC approved the Final Site Characterization Report for petroleum Sites CS545 and TA001 documenting results of investigation activities that occurred in 2016. The report recommended Cleanup Complete with Institutional Controls for CS545 and further investigation for TA001. For CS545, further evaluation of potential non-petroleum sources is needed.	Wendy Hansen
3/20/2019	Document, Report, or Work plan Review - other	Staff reviewed draft supplemental long term monitoring work plan titled Draft Supplemental Work Plan: 2019 Remedial Action Operations, Land Use/Institutional Control Cape Newenham Long Range Radar Station Sites CS545, SS007, and TA001 dated February 2019, and provided comments to the Air Force. The plan includes IC signage and site inspection at all three sites, collection of 17 surface soil samples downgradient of the SS007 cap, the collection of one groundwater monitoring sample at CS545, and installation of 4 soil borings at each TA001 Tank area and TA001 pumphouse to provide further delineation of contamination.	Wendy Hansen
6/27/2019	Document, Report, or Work plan Review - other	Staff approved the 2019 Supplemental Work Plan for CS545, TA001, and SS007 which included the Final Supplemental Work Plan 2019 Remedial Action Operations, Land Use/Institutional Control Cape Newenham Long Range Radar Station Sites CS545, SS007, and TA001 Contract Number: W911KB-14-D-0007-0008 dated June 2019 and Proposed Deviations to the Final 2019 Supplemental Work Plan Cape Newenham LRRS Sites CS545, SS007, and TA001; Contract #W911KB-14-D-0007-0008, dated June 26, 2019. The proposed deviations were submitted to provide for resolution regarding comments to the draft work plan that were not incorporated into the final document. Eight borings were scoped in 2019 at sites TA001. Further investigation may be needed in the future to complete site characterization.	Wendy Hansen
2/7/2020	Document, Report, or Work plan Review - other	Staff reviewed the draft long term monitoring report titled Draft 2019 Technical Project Report, 2019 Remedial Action Operations, Land Use/Institutional Control Cape Newenham LRRS dated January 2020, and provided comments to the Air Force. The report documented IC signage and site inspection at three sites (CS545, TA001, and SS007), collection of 17 surface soil samples downgradient of the SS007 cap, the collection of one groundwater monitoring sample at CS545, and installation of 10 soil borings at TA001.	Wendy Hansen
2/20/2020	CERCLA PA	Staff reviewed a draft Preliminary Assessment (PA) Report for Aqueous Film Forming Foam, and provided comments. Historical records indicated that foam was used for fire suppression and response at the Cape Newenham installation and that it could have been AFFF. The PA did not confirm that a fire training area existed but that records indicate fire training activities likely occurred and that associated records no longer exist. A fire engine and foam tank were present at Cape Newenham. The PA recommended a Site Investigation, and identified drinking water groundwater, surface water, sediment, surface soil, and subsurface soil as potentially impacted media.	Wendy Hansen
4/30/2020	Document, Report, or Work plan Review - other	Staff approved the 2019 LTM Report for CS545, TA001, and SS007 titled: Final 2019 Technical Project Report 2019 Remedial Action Operations, Land Use/Institutional Control Cape Newenham LRRS Contract Number: W911KB-14-D-0007-0008 which is dated April 2020. All comments were satisfactorily addressed. Additional site characterization may be needed at TA001 and CS545 then what is recommended in the report, as noted in the responses to comment.	Wendy Hansen
5/19/2020	Update or Other Action	Draft Supplemental LTM Workplan submitted.	Janice Wiegers
6/16/2020	Document, Report, or Work plan Review - other	DEC provide comments for the Draft PFOA, PFOS, and PFBS site inspections, UFP-QAPP Work Plan, Six Remote Long Range Radar Stations, Alaska, May 2020. The UFP-QAPP work plan was prepared for the U.S. Air Force (USAF) to support the Perfluorooctanoic Acid (PFOA), Perfluorooctane Sulfonate (PFOS), and Perfluorobutane Sulfonate (PFBS) Site Inspections (SIs) at six remote radar sites in Alaska including: Tatalina LRRS, Point Barrow LRRS, Indian Mountain LRRS, Sparrevohn LRRS, Cape Newenham LRRS, and Cape Romanzof LRRS.	Dennis Shepard
7/15/2020	CERCLA PA	DEC provided evaluation via email of the U.S. Air Force's response to comments on the "DRAFT PRELIMINARY ASSESSMENT REPORT FOR AQUEOUS FILM FORMING FOAM AT CAPE NEWENHAM LONG RANGE RADAR STATION, ALASKA" dated January 2020.	Melinda Brunner
7/25/2020	CERCLA SI	DEC approved the “Final Perfluorooctanoic Acid, Perfluoroctane Sulfonate, and Perfluorobutane Sulfonate Site Inspections, Uniform Federal Policy-Quality Assurance Project Plan Work Plan, Six Remote Radar Stations, Alaska” dated July 2020. This work plan was prepared by United States Air Force to guide investigation of the potential presence of perfluorooctanoic acid (PFOA), perfluorooctane sulfonate (PFOS), and perfluorobutane sulfonate (PFBS) at six remote radar sites in Alaska through the sampling of surface water, groundwater, soil and sediment. Sampling is planned for Cape Newenham, Cape Romanzof, Indian Mountain, Point Barrow, Sparrevohn and Tatalina,	Melinda Brunner
4/7/2022	Document, Report, or Work plan Review - other	Report regarding sampling of the drinking water well, dated 9/20/2021, submitted. The report documents site inspection and sampling of the drinking water system for PFAS by the Air Force Bioenvironmental staff. Water is provided through an infiltration gallery from a vertical pit, then filtered and chlorinated. Samples were collected from three taps and from the distribution piping. All samples were collected after treatment and filtration had occurred. PFAS were not detected in the samples. The samples were collected on 7/23/2021.	Janice Wiegers
5/20/2022	Document, Report, or Work plan Review - other	ADEC provided comments on Draft Site Inspection and No Further Response Action Planned Report for Perfluorooctane Sulfonate, Perfluorooctanoic Acid, and Perfluorobutanesulfonic Acid at Cape Newenham Long Range Radar Site, Alaska dated March 2022. The report documented results of investigation activities that occurred in 2021/2022.	Brandi Tolsma
7/7/2023	Document, Report, or Work plan Review - other	DEC approved the Draft Final Supplemental Site Characterization Work Plan/ UFP-QAPP Cape Newenham Long Range Radar Site Site TA001, dated June 2023. The work plan describes the planned site characterization activities at the TA001 site located on the Cape Newenham Long Range Radar Site, Alaska. The goal of this work is to address data gaps from previous site characterization efforts and to define the lateral and vertical extent of petroleum-related soil contamination at TA001, investigate groundwater and surface water impacts at TA001, and further investigate the extent of lead soil contamination at the former Tank 2 footprint within the Tank Area. The focus of this investigation will be on the Tank Area, Pipeline B, and Pumphouse. The related sites within the database are Cape Newenham LRRS POI 1 (File Number 2525.38.001) – includes only the Tank Area, and the Cape Newenham LRRS – Air Force (File Number 2525.38.001) – includes and tracks cleanups at all sites, except SS008 and SS007.	Ginna Quesada
2/1/2024	Offsite Soil or Groundwater Disposal Approved	DEC provided approval via a Contaminated Media Transport and Treatment or Disposal Approval Form for disposal of 30 gallons of POL-contaminated groundwater generated during site characterization from Cape Newenham LRSS, Site TAOO1. The purge water generated as investigation-derived waste during this project was stored in a 30-gallon poly drum, transported to Anchorage, and stored in a Brice Warehouse pending analytical sample results. The results were received and submitted to US Ecology for waste profiling. The waste has been verified, and the drum will be delivered to US Ecology for disposal.	Sarah Bernhardt
2/16/2024	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conservation (DEC) has completed a review of the U.S. Army Corps of Engineers’ draft report for 2022 Remedial Action Operations, Land Use / Institutional Control Report, Cape Newenham LRSS, Alaska, Sites CS545, SS007, and TA001, dated January 2024 on February 15, 2024. The Remedial Action Operations, Land Use / Institutional Control Report (Report) presents the results of the 2022 Long-Term Management (LTM) performed at the Cape Newenham Long Range Radar Station (LRRS) in Cape Newenham, Alaska.	Sarah Bernhardt

Action Date

Action

Description

DEC Staff

9/14/1993

Leaking Underground Storage Tank Release Confirmed - Petroleum

LUST Site created in CSP for source area ID 75824 Pollution Discharge Report (CDRL A034) and Tank Removal report (dated September 6, 1991) received on September 14, 1993. John Halverson, ADEC project manager.

Former Staff

9/14/1993

Site Added to Database

Former Staff

1/1/1994

Leaking Underground Storage Tank Corrective Action Underway

Corrective Action Design (Spill 92-251-330-1) Draft Remedial Action Decision report prepared by Martin Marietta Services; no final received. John Halverson, ADEC project manager.

Gretchen Pikul

9/25/1995

Leaking Underground Storage Tank Cleanup Initiated - Petroleum

ADEC sent a Closure of Compliance Advisory letter dated September 19, 1994, UST Facility # 569. Both sites within Lower Camp. Ray Burger, ADEC project manager.

Gretchen Pikul

7/1/1996

Document, Report, or Work plan Review - other

Revised Final Management Action Plan (dated June 1996) received on July 1, 1996. Ray Burger, ADEC project manager.

Gretchen Pikul

1/8/1997

Underground Storage Tank Site Characterization or Assessment

Final Site Assessment / Release Investigation (dated December 1996) prepared for 611th Civil Engineer Squadron and by ASRC Contracting Company, Inc.; received by ADEC on January 8, 1997. Gretchen Pikul, ADEC project manager.

Gretchen Pikul

12/15/1997

Leaking Underground Storage Tank Corrective Action Underway

Environmental Cleanup Plan and Quality Program Plan, Pipeline Removal (draft dated March 1997, received on May 7, 1997, final dated June 1997 and received on December 15, 1997); teleconference on June 6, 1997; ADEC comment letter dated June 25, 1997. Gretchen Pikul, ADEC project manager.

Gretchen Pikul

1/9/1998

Document, Report, or Work plan Review - other

Management Action Plan (draft dated July 25, 1997, final dated January 9, 1998); ADEC comment letter dated December 4, 1997. Gretchen Pikul, ADEC project manager.

Gretchen Pikul

11/12/1998

Document, Report, or Work plan Review - other

Technical Report - Study/Services, Pipeline Removal (draft dated October 1997; final dated October 1998; received on November 12, 1998); ADEC comment letter dated December 24, 1997; December 17, 1998 telephone call with Air Force on future cleanup actions necessary to close site; note - interim removal action under 611th compliance section. Gretchen Pikul, ADEC project manager.

Gretchen Pikul

9/6/2000

Document, Report, or Work plan Review - other

Environmental Work and Quality Plans, Follow-on Environmental Compliance (UST Removal) - draft dated August 2000; ADEC comment letter dated September 2000. Both sites within Lower Camp. Gretchen Pikul, ADEC project manager.

Gretchen Pikul

4/20/2001

Document, Report, or Work plan Review - other

Technical Report - Follow-on Environmental Compliance (UST Removal) draft dated December 2000, received on January 2, 2001, ADEC comment letter dated April 20, 2001. Both sites within Lower Camp. Gretchen Pikul, ADEC project manager.

Gretchen Pikul

6/30/2004

Update or Other Action

RECKEY has automatically been generated.

Former Staff

2/17/2009

Cleanup Level(s) Approved

Contaminated Sites staff reviewed and approved a request for an alternative cleanup level for DRO impacted soil at the Cape Newenham Long Range Radar Station. About 300-cubic yards of soil were stockpiled in biocells originating from underground storage tank removals in the late 1990’s. Total organic carbon in the area is over 6%, with the average DRO concentration in the piles at around 800 mg/kg. The responsible party is coordinating with the Solid Waste Section to see about using the contaminated soil as landfill cover

Jeff Brownlee

3/3/2010

Exposure Tracking Model Ranking

Initial ranking with ETM completed for source area id: 75824 name: autogenerated pm edit - Cape Newenham LRRS - Air Force

Curtis Dunkin

8/29/2017

Document, Report, or Work plan Review - other

Staff reviewed draft supplemental long term monitoring work plan titled 2017-2018 Remedial Action Operations, Land Use/Institutional Control Cape Newenham Long Range Radar Station Sites CS545, SS007, and TA001 dated August 2017 and received electronically by the ADEC on August 18, 2017 for an expedited review, and provided comments to the Air Force.

Wendy Hansen

9/7/2017

Document, Report, or Work plan Review - other

ADEC provided comments on Draft Site Characterization Report for petroleum Sites CS545 and TA001, dated March 2017 and received by the ADEC on April 3, 2017. The report documented results of investigation activities that occurred in 2016.

Wendy Hansen

9/8/2017

Document, Report, or Work plan Review - other

Staff approved supplemental long term monitoring work plan titled 2017-2018 Remedial Action Operations, Land Use/Institutional Control Cape Newenham Long Range Radar Station Sites CS545, SS007, and TA001 dated August 2017.

Wendy Hansen

1/2/2018

Document, Report, or Work plan Review - other

Staff reviewed and provided comments for the Draft 2017 Technical Project Report Remedial Action Operations, Land Use/Institutional Control Report dated December 2017 and submitted on December 22, 2017.

Wendy Hansen

1/17/2018

Document, Report, or Work plan Review - other

ADEC reviewed the Air Forces responses to comment on the Draft Site Characterization Report for petroleum Sites CS545 and TA001, and associated Draft Final document dated November 2017. Additional comments were provided. The report documented results of investigation activities that occurred in 2016, and recommended Cleanup Complete with Institutional Controls (CC w/ICs) for each Site CS545 and TA001. For CS545, further evaluation of potential non-petroleum sources is needed. For TA001, site characterization is not complete and petroleum remains above maximum allowable concentrations.

Wendy Hansen

5/2/2018

Update or Other Action

ADEC sent a response letter to USAF regarding an April 18, 2018 request for approval to trench in the vicinity of CS545. The ADEC did not object to the USAF proceeding without a soil management plan because the activities proposed are limited to a small area at a depth below ground surface not known to be contaminated, but recommended one due to concern that the Cape Newenham facility has not been fully characterized for non-petroleum COPCs.

Wendy Hansen

8/20/2018

Document, Report, or Work plan Review - other

DEC approved the Final 2016 Long Term Monitoring Report, Final Summary Report 2016 Remedial Action Operations, Land Use/ Institutional Control Cape Newenham LRRS, dated July 2018. DEC comments have been addressed.

Wendy Hansen

8/23/2018

Document, Report, or Work plan Review - other

DEC approved the Final 2017 Long Term Monitoring Report, Final 2017 Technical Project Report 2017 Remedial Action Operations, Land Use/Institutional Control Cape Newenham LRRS, dated August 2018. DEC comments have been addressed. This report was also applicable for CS545 and TA001 interim LUCs.

Wendy Hansen

10/22/2018

Site Characterization Report Approved

ADEC approved the Final Site Characterization Report for petroleum Sites CS545 and TA001 documenting results of investigation activities that occurred in 2016. The report recommended Cleanup Complete with Institutional Controls for CS545 and further investigation for TA001. For CS545, further evaluation of potential non-petroleum sources is needed.

Wendy Hansen

3/20/2019

Document, Report, or Work plan Review - other

Staff reviewed draft supplemental long term monitoring work plan titled Draft Supplemental Work Plan: 2019 Remedial Action Operations, Land Use/Institutional Control Cape Newenham Long Range Radar Station Sites CS545, SS007, and TA001 dated February 2019, and provided comments to the Air Force. The plan includes IC signage and site inspection at all three sites, collection of 17 surface soil samples downgradient of the SS007 cap, the collection of one groundwater monitoring sample at CS545, and installation of 4 soil borings at each TA001 Tank area and TA001 pumphouse to provide further delineation of contamination.

Wendy Hansen

6/27/2019

Document, Report, or Work plan Review - other

Staff approved the 2019 Supplemental Work Plan for CS545, TA001, and SS007 which included the Final Supplemental Work Plan 2019 Remedial Action Operations, Land Use/Institutional Control Cape Newenham Long Range Radar Station Sites CS545, SS007, and TA001 Contract Number: W911KB-14-D-0007-0008 dated June 2019 and Proposed Deviations to the Final 2019 Supplemental Work Plan Cape Newenham LRRS Sites CS545, SS007, and TA001; Contract #W911KB-14-D-0007-0008, dated June 26, 2019. The proposed deviations were submitted to provide for resolution regarding comments to the draft work plan that were not incorporated into the final document. Eight borings were scoped in 2019 at sites TA001. Further investigation may be needed in the future to complete site characterization.

Wendy Hansen

2/7/2020

Document, Report, or Work plan Review - other

Staff reviewed the draft long term monitoring report titled Draft 2019 Technical Project Report, 2019 Remedial Action Operations, Land Use/Institutional Control Cape Newenham LRRS dated January 2020, and provided comments to the Air Force. The report documented IC signage and site inspection at three sites (CS545, TA001, and SS007), collection of 17 surface soil samples downgradient of the SS007 cap, the collection of one groundwater monitoring sample at CS545, and installation of 10 soil borings at TA001.

Wendy Hansen

2/20/2020

CERCLA PA

Staff reviewed a draft Preliminary Assessment (PA) Report for Aqueous Film Forming Foam, and provided comments. Historical records indicated that foam was used for fire suppression and response at the Cape Newenham installation and that it could have been AFFF. The PA did not confirm that a fire training area existed but that records indicate fire training activities likely occurred and that associated records no longer exist. A fire engine and foam tank were present at Cape Newenham. The PA recommended a Site Investigation, and identified drinking water groundwater, surface water, sediment, surface soil, and subsurface soil as potentially impacted media.

Wendy Hansen

4/30/2020

Document, Report, or Work plan Review - other

Staff approved the 2019 LTM Report for CS545, TA001, and SS007 titled: Final 2019 Technical Project Report 2019 Remedial Action Operations, Land Use/Institutional Control Cape Newenham LRRS Contract Number: W911KB-14-D-0007-0008 which is dated April 2020. All comments were satisfactorily addressed. Additional site characterization may be needed at TA001 and CS545 then what is recommended in the report, as noted in the responses to comment.

Wendy Hansen

5/19/2020

Update or Other Action

Draft Supplemental LTM Workplan submitted.

Janice Wiegers

6/16/2020

Document, Report, or Work plan Review - other

DEC provide comments for the Draft PFOA, PFOS, and PFBS site inspections, UFP-QAPP Work Plan, Six Remote Long Range Radar Stations, Alaska, May 2020. The UFP-QAPP work plan was prepared for the U.S. Air Force (USAF) to support the Perfluorooctanoic Acid (PFOA), Perfluorooctane Sulfonate (PFOS), and Perfluorobutane Sulfonate (PFBS) Site Inspections (SIs) at six remote radar sites in Alaska including: Tatalina LRRS, Point Barrow LRRS, Indian Mountain LRRS, Sparrevohn LRRS, Cape Newenham LRRS, and Cape Romanzof LRRS.

Dennis Shepard

7/15/2020

CERCLA PA

DEC provided evaluation via email of the U.S. Air Force's response to comments on the "DRAFT PRELIMINARY ASSESSMENT REPORT FOR AQUEOUS FILM FORMING FOAM AT CAPE NEWENHAM LONG RANGE RADAR STATION, ALASKA" dated January 2020.

Melinda Brunner

7/25/2020

CERCLA SI

DEC approved the “Final Perfluorooctanoic Acid, Perfluoroctane Sulfonate, and Perfluorobutane Sulfonate Site Inspections, Uniform Federal Policy-Quality Assurance Project Plan Work Plan, Six Remote Radar Stations, Alaska” dated July 2020. This work plan was prepared by United States Air Force to guide investigation of the potential presence of perfluorooctanoic acid (PFOA), perfluorooctane sulfonate (PFOS), and perfluorobutane sulfonate (PFBS) at six remote radar sites in Alaska through the sampling of surface water, groundwater, soil and sediment. Sampling is planned for Cape Newenham, Cape Romanzof, Indian Mountain, Point Barrow, Sparrevohn and Tatalina,

Melinda Brunner

4/7/2022

Document, Report, or Work plan Review - other

Report regarding sampling of the drinking water well, dated 9/20/2021, submitted. The report documents site inspection and sampling of the drinking water system for PFAS by the Air Force Bioenvironmental staff. Water is provided through an infiltration gallery from a vertical pit, then filtered and chlorinated. Samples were collected from three taps and from the distribution piping. All samples were collected after treatment and filtration had occurred. PFAS were not detected in the samples. The samples were collected on 7/23/2021.

Janice Wiegers

5/20/2022

Document, Report, or Work plan Review - other

ADEC provided comments on Draft Site Inspection and No Further Response Action Planned Report for Perfluorooctane Sulfonate, Perfluorooctanoic Acid, and Perfluorobutanesulfonic Acid at Cape Newenham Long Range Radar Site, Alaska dated March 2022. The report documented results of investigation activities that occurred in 2021/2022.

Brandi Tolsma

7/7/2023

Document, Report, or Work plan Review - other

DEC approved the Draft Final Supplemental Site Characterization Work Plan/ UFP-QAPP Cape Newenham Long Range Radar Site Site TA001, dated June 2023. The work plan describes the planned site characterization activities at the TA001 site located on the Cape Newenham Long Range Radar Site, Alaska. The goal of this work is to address data gaps from previous site characterization efforts and to define the lateral and vertical extent of petroleum-related soil contamination at TA001, investigate groundwater and surface water impacts at TA001, and further investigate the extent of lead soil contamination at the former Tank 2 footprint within the Tank Area. The focus of this investigation will be on the Tank Area, Pipeline B, and Pumphouse. The related sites within the database are Cape Newenham LRRS POI 1 (File Number 2525.38.001) – includes only the Tank Area, and the Cape Newenham LRRS – Air Force (File Number 2525.38.001) – includes and tracks cleanups at all sites, except SS008 and SS007.

Ginna Quesada

2/1/2024

Offsite Soil or Groundwater Disposal Approved

DEC provided approval via a Contaminated Media Transport and Treatment or Disposal Approval Form for disposal of 30 gallons of POL-contaminated groundwater generated during site characterization from Cape Newenham LRSS, Site TAOO1. The purge water generated as investigation-derived waste during this project was stored in a 30-gallon poly drum, transported to Anchorage, and stored in a Brice Warehouse pending analytical sample results. The results were received and submitted to US Ecology for waste profiling. The waste has been verified, and the drum will be delivered to US Ecology for disposal.

Sarah Bernhardt

2/16/2024

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conservation (DEC) has completed a review of the U.S. Army Corps of Engineers’ draft report for 2022 Remedial Action Operations, Land Use / Institutional Control Report, Cape Newenham LRSS, Alaska, Sites CS545, SS007, and TA001, dated January 2024 on February 15, 2024. The Remedial Action Operations, Land Use / Institutional Control Report (Report) presents the results of the 2022 Long-Term Management (LTM) performed at the Cape Newenham Long Range Radar Station (LRRS) in Cape Newenham, Alaska.

Sarah Bernhardt

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Site Report: Cape Newenham LRRS - Air Force

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Missing Location Data

State of Alaska Department of Environmental Conservation