Site Report: Eareckson Air Station FT03

Site Name:	Eareckson Air Station FT03
Address:	Fire Dept Foam Training, Amchitka, AK 99546
File Number:	2649.38.001, 2649.38.004
Hazard ID:	2844
Status:	Active
Staff:	Erica Blake, 9074512182 erica.blake@alaska.gov
Latitude:	52.723083
Longitude:	174.088553
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

Eareckson AS is situated on Shemya Island, approximately 1,500 miles southwest of Anchorage, Alaska at the westernmost tip of the Aleutian Islands. Shemya Island is part of the Near Islands group of the Aleutian Archipelago. The U.S. Army first developed facilities on Shemya Island in 1943 to support operations against the Japanese occupation forces on the nearby islands of Attu, Agattu, and Kiska. In 1954, the site was deactivated, and was turned over to the Civil Aeronautics Authority in 1955. In 1958, the Air Force returned to Shemya Island to support various Air Force and Army strategic intelligence gathering activities. It has remained active in this capacity to the present. In 1995, the station was downsized and reverted to caretaker status and a private operation and maintenance contractor took control of the facility under contract to the Air Force. Shemya Island is owned by the U.S. Government and is under the jurisdiction of the United States Fish and Wildlife Service (USFWS) as part of the Alaska Maritime National Wildlife Refuge. FT003, the Fire Department Foam Training Area is located in the west central area of the island. Materials disposed of include combustibles, JP-4, waste oil, and POLs at site. Fire training discontinued in late 1980s. Surface water drainages are within the site boundary. Groundwater at 40' below ground surface.

Action Information

Action Date	Action	Description	DEC Staff
9/1/1984	Preliminary Assessment Approved	Installation Restoration Program, Phase I Records Search, 5073rd Air Base Group, Shemya Air Force Base, Alaska (dated September 1984) prepared by JRB Associates	Former Staff
12/30/1985	Interim Removal Action Approved	(Undated) Alaska Cleanup Effort, Shemya History 1975 - 1985. Internal Report. Prepared by 5099th CEOS.	Former Staff
8/10/1990	Update or Other Action	Installation Restoration Program, Stage I Final Technical Report for Shemya Air Force Base, prepared by CH2M Hill	Former Staff
2/1/1993	Update or Other Action	Shemya Air Force Base, Alaska 1992 Installation Restoration Program Field Investigation Report, prepared by CH2M Hill; report finalized in February 1993	Ray Burger
1/15/1996	Site Characterization Report Approved	Final Remedial Investigation / Feasibility Study Report, Volume III, Eareckson Air Station, Alaska (Formerly Shemya Air Force Base Alaska).	Ray Burger
3/15/1996	Update or Other Action	Final Remedial Investigation / Feasibility Study Report, Volume IV, Eareckson Air Station, Alaska (Formerly Shemya Air Force Base Alaska).	Ray Burger
2/5/1999	Update or Other Action	Remedial Investigation Basewide Groundwater Monitoring Report, August - September 1998, Basewide Monitoring Activities and Findings (dated January 1999)	Gretchen Pikul
7/3/2001	Update or Other Action	Technical Memorandum - Risk Assessment Assumptions for Decision Documents (draft final dated January 8, 2001, ADEC comment letter dated March 19, 2001, comment resolution meeting on May 18, 2001, final received June 11, 2001, ADEC e-mail comments after reviewing final document dated July 3, 2001).	Gretchen Pikul
12/10/2001	Update or Other Action	Decision Document Report Volumes III and IV (draft dated March 1996; draft final dated April 1997 and received May 1997; ADEC comment letter dated October 1, 1997 with extensive comments; related meetings in 1998 on October 30, November 23, November 24, and December 30; related meetings in 1999 on January 20 and 26, February 2 and 25, June 22-25 during site visit, August 24 during FY00 project scoping meeting, and October 1; received Review Draft Decision Documents on November 30, 1999 ADEC comment letters in February 2000; related meetings in 2000 on January 4; related meetings in 2001 on January 4 and 16; ADEC comment letter on Draft Final Technical Memorandum - Risk Assessment Assumptions for Decision Documents (dated March 19) with comment resolution meeting on May 18, final memorandum dated June 2001; draft Proposed Plan for 6 sites received August 24, ADEC comment letter dated September 19, 'response to comments' received December 10, 2001).	Gretchen Pikul
8/31/2004	Update or Other Action	Proposed Plan for Remedial Action; 1st draft dated July 2003 and received on July 16; received 1st draft of updated risk assessments on July 30; ADEC commented on August 4 and 5; comment resolution meeting August 22 and 27; internal briefing August 26; final Proposed Plan delayed due to funding issues and changes in Air Force guidance and policy; Proposed Plan comment resolution meeting on March 15, 2004; ADEC participated in calls and e-mails with Air Force contractor regarding Proposed Plan status and wording in April and May 2004; 2nd draft Proposed Plan submitted on June 1, 2004 and ADEC sent comments via e-mail on June 3; 2nd draft of updated risk assessments for FT01 and FT03, and FT02 and SS07 received June 7 and 14, respectively; ADEC comments (Lindsay Smith, ADEC Risk Assessor) were sent on July 1; July 22 ADEC call to Air Force on status of Updated Risk Assessments and comment resolution meeting date; Updated Risk Assessments comment resolution teleconference on July 26 – updated and final Air Force Comment Response, cumulative risk calculation spreadsheets, and information on outstanding issues to be submitted by early 1st week of August; ADEC sent e-mails on status of outstanding deliverables on August 6 and 13, e-mails and calls regarding this information occurred in August and information will not be available before September 1 for ADEC Risk Assessor to review (ADEC Risk Assessor to be back in office in October 2004).	Gretchen Pikul
11/1/2004	Update or Other Action	2004 Supplemental Field Investigations at Sites LF18, FT01, FT02, and FT03 (sampling to address data gaps prior to ROD for referenced sites); draft report dated October 2004 received November 1, 2004; ADEC issued comment letter dated December 10, 2004; comment resolution meeting held on December 20; based on findings additional groundwater sample collected from MW-01 at Site LF18 for DRO/PAH in January 2005; final report received January 20, 2005; ADEC issued approval letter on January 25, 2005.	Jeff Norberg
8/5/2005	Proposed Plan	Proposed Plan for Eareckson AS Sites FT01, FT02, FT03, and SS07; revised draft dated February 2005 received on February 11 (see related entry on August 31, 2004); ADEC comment letter issued on March 10, 2005; comment resolution meeting during site visit on March 15, 2005; ADEC participated in calls and e-mails with Air Force contractor regarding Proposed Plan status and outstanding issues related to updated risk assessment data from May through July 2005; Risk assessment data approved by State Risk Assessor Aug 2005; Final Proposed Plan submitted and approved on August 5, 2005	Jeff Norberg
8/25/2005	Meeting or Teleconference Held	Public meeting held August 24, 2005 1900 – 2100 hrs at the Loussac Library to discuss Proposed Plan for Eareckson AS Sites FT01, FT02, FT03, and SS07	Jeff Norberg
10/21/2010	CERCLA ROD Approved	ADEC and USAF representatives have signed the Record of Decision for three Fire Training Grounds at Eareckson Air Station. Based on the results of environmental investigations conducted at the three Fire Training Grounds addressed in this Record of Decision, no CERCLA hazardous substances are considered COCs or COECs and the USAF has determined that no action is necessary under CERCLA to protect public health or welfare of the environment at any of the three Environmental Restoration Sites. ADEC Contaminated Sites Staff concurred that the slelcted remedy complies with state law. Investigations conducted at the FT001, FT002, and FT003 have shown that the contamination is from discharges of petroleum products and, therefore, there is no action necessary under CERCLA and no remedy is being selected under CERCLA. Metals were detected at these three sites; however, there are no antthropogenic sources for these metals at the three fire training sites and these sites will contain a requirement for confirmation sampling for metals to verify that the conclusion that they are not antropogenic in origin. Additionally groundwater and surface water monitoring will be conducted for petroleum products under the State Decision Document.	Jonathan Schick
10/21/2010	Update or Other Action	The Final Non-CERCLA Decision Document was signed by USAF and ADEC representatives for three Fire Training Grounds at Eareckson Air Station. As lead agent under CERCLA, the USAF has issued a no action ROD under separate cover for these sites - in part because petorleum ius not considered a hazardous substance under the CERCLA petroleum exclusion. Because petroleum is a hazardous substance under state law, these sites need to be addressed under state regulations. At the Fire Department Foam Training Area (FT003) the risks to human health and the environment identified were due to metals (aluminum and chromium) that are believed to be naturally occurring. However, petroleum hydrocarbon levels in the subsurface soils and groundwater exceed ADEC cleanup levels. The selected reemedy at FT003 includes ICs to restrict subsurface activities and monitored natural attenuation of groundwater. Additional sampling and analysis for metals in the site groundwater will also be conducted to substantiate that the metals are naturally occurring.	Jonathan Schick
6/25/2011	Update or Other Action	This site was included in the 2010 Record of Decision but was not included in the contract for groundwater sampling with the other Fire Training Ground Sites as it was not initially anticipated to be part of the Long Term Monitoring Projects. The ROD determined that the groundwater will be sampled every 2 years to determine if the metals are naturally occurring and to monitor the concentrations of the petroleum constituents.	Jonathan Schick
6/25/2012	Update or Other Action	No sampling has been conducted at this site but it should be included in the next round of sampling for the Fire Training Ground Sites as determined in the September 2010 Record of Decision.	Jonathan Schick
12/1/2012	Update or Other Action	The USAF submitted the 2012 Land Use Control Management Plan, which included land use controls for FT03 at Eareckson Air Station.	Jessica Morris
10/10/2013	Update or Other Action	The ADEC Contaminated Sites Program approved the Environmental Long Term Management Report for several sites. Continued long term monitoring was recommended for FT003.	Jessica Morris
1/9/2014	Update or Other Action	The ADEC Contaminated Site Program approved the Final Eareckson Air Station Five Year Review Report. The report recommended removing surface metals debris at FT003. Recommedations also included conducting sampling to determine the presence/absence of PFOS/PFOAs.	Jessica Morris
8/8/2014	Institutional Control Record Established	Institutional Controls established and entered into the database. The ICs include the following 1) The Eareckson AS Base General Base will contain a map indicating restrictions for groundwater use and excavation of soil. Dig permits are issued by the Base Operating Contractor prior to any excavation or well installation at the Base. 2) The USAF will obtain prior concurrence from ADEC to terminate the ICs, modify land use, or allow other actions that might disrupt the protectiveness of the ICs. 3) The ICs will remain in effect until the petroleum hydrocarbons, VOCs, and SVOCs in soil are found to be less that the applicable cleanup levels.	Jessica Morris
8/8/2014	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 73820 POL soils from Fire Training Activities.	Jessica Morris
8/27/2014	Long Term Monitoring Established	The ADEC Contaminated Sites Program approved the Final Work Plan for Environmental Long Term Monitoring and Site Inspections ((FT001, FT002, FT003, OT048, SS007, LF015, LF018, LF024, LF026, SS010, SS023, ST035, SS025, ST009, ST044, ST046, ST050, ST051) and Limited Site Characterization (Building 3055 Area) at Eareckson Air Station, Alaska. This scope of work is not sufficient to meet the long term monitoring objectives outlined in the most recently established RODs. The USAF will hold a scoping meeting with ADEC to plan additional well installation to meet these long term monitoring requirements.	Jessica Morris
5/12/2015	Meeting or Teleconference Held	The ADEC Contaminated Sites Program participated in a project scoping meeting with the US Air Force regarding various sites at Eareckson Air Station. A remedial investigation/feasibility study for multiple compliance and LUST sites is scheduled to occur in 2015/2016. Additional groundwater wells will also be installed for long term monitoring at several IRP sites.	Jessica Morris
5/20/2015	Institutional Control Periodic Reporting	The ADEC Contaminated Sites Program approved the Final Report for Environmental Long Term Monitoring and Site Inspections ((FT001, FT002, FT003, OT048, SS007, LF015, LF018, LF024, LF026, SS010, SS023, ST035, SS025, ST009, ST044, ST046, ST050, ST051) at Eareckson Air Station, Alaska.	Jessica Morris
7/9/2015	Institutional Control Update	ADEC approved the July 2015 U.S. Air Force Land Use Control Management Plan, Pacific Air Forces Regional Support Center Installations. The plan includes land use controls for FT003 at Eareckson Air Station.	Jessica Morris
10/22/2015	Update or Other Action	The ADEC Contaminated Sites Program reviewed and commented on a draft scope of work for investigation, remedial process optimization, and long term management studies at several sites for Eareckson Air Station.	Jessica Morris
11/14/2016	Site Visit	ADEC staff travelled to Eareckson Air Station for 4 days to conduct site visits and become familiar with the ecology and topography of the island. Site visits were conducted to all pertinent sites and meetings were held to with ADEC and USAF to discuss a path forward for the sites.	Jessica Morris
3/31/2017	Document, Report, or Work plan Review - other	The ADEC Contaminated Sites Program approved the Final UFP-QAPP Site Investigation for Perfluorinated Compounds and Long Term Management Studies, Eareckson Air Station. The work plan was approved with the condition that the monitoring program proposed was not sufficient to meet the requirements in the RODs. ADEC requires a work plan for remedy implementation to establish an adequate monitoring program.	Jessica Morris
11/27/2017	Site Visit	ADEC staff travelled to Eareckson Air Station for 3 days to conduct site visits and institutional control inspections. Site visits were conducted to all pertinent sites and meetings were held to with ADEC and USAF to discuss a path forward for the sites.	Jessica Morris
5/2/2018	Document, Report, or Work plan Review - other	The ADEC Contaminated Sites Program submitted comments on the Draft Remedial Process Optimization Report for Eareckson Air Station. The purpose of the report was to present an evaluation of the effectiveness of the current selected site remedies and make recommendations for optimization of an island-wide monitoring and management program for contaminated sites at Eareckson. ADEC had numerous comments on the document, and requested a project team meeting to further discuss a more effective and efficient program at Eareckson.	Jessica Morris
5/8/2018	Site Characterization Report Approved	The ADEC Contaminated Sites Program approved the Final Perflourinated Compounds Investigation Report for Eareckson Air Station.	Jessica Morris
1/8/2019	Institutional Control Compliance Review	The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program received a copy of the Final Long Term Monitoring and Institutional Controls Inspection Report for Eareckson Air Station. The report is accepted as final documentation of the field activities. The report is approved with the conditions noted in the ADEC’s comments 1/8/19 letter. The field efforts completed are not considered sufficient to meet the overall long term monitoring requirements outlined in the site records of decision and regulations for closure end point criteria. ADEC is working with the USAF to develop a more efficient island-wide long term monitoring strategy for Eareckson Air Station.	Jessica Morris
2/21/2019	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 73820 POL soils from Fire Training Activities.	Jessica Morris
5/8/2019	CERCLA PA	DEC reviewed the "Draft Preliminary Assessment Report for Aqueous Film Forming Foam at Eareckson Air Station, Alaska” (the PA) dated October 2017, and provided comments to the U.S. Air Force on the document. DEC disagrees with the recommendations in the PA for no further action at the following sites: Hangars 2, 3, 4, 6, and 7; the Fire Station; the Vehicle Maintenance Facility; AFFF Release Area; and the POL Facility. Additionally, DEC asserts that the following potential sources areas should be included in the PA, and should be investigated during site inspection efforts in the future: 1) The wastewater treatment settling pond(s) and wastewater discharge point, since the drinking water gallery is known to be contaminated with PFAS; 2) any areas where biosolids were spread or disposed of on the island, since the water gallery is known to be contaminated with PFAS; and 3) any landfills/disposal sites on the island where materials used during AFFF release cleanups, such as the cleanup after the release in Hangar 8, were placed.	Melinda Brunner
6/13/2019	CERCLA SI	ADEC approved the 2019 Eareckson AS PFOA and PFOS SI QAPP. The purpose of this SI is to gain an understanding of project site conditions and to determine if a release of PFOA or PFOS has occurred in the vicinity of the island's drinking water gallery and nearby hangers, where data gaps related to the presence of PFOA and PFOS have been identified.	Darren Mulkey
7/5/2019	CERCLA ROD Periodic Review	DEC provided comments to the U.S. Air Force on the "Five-Year Review Report and Period Review for Eareckson Air Station, Shemya Island, Alaska, Draft” dated November 2018 on July 5, 2019.	Melinda Brunner
7/29/2019	CERCLA PA	DEC acknowledged receipt to the U.S. Air Force of the "Final Preliminary Assessment Report for Aqueous Film Forming Foam at Eareckson Air Station, Alaska” (the PA) dated June 2019 by sending a letter dated July 29, 2019. DEC disagrees with the recommendations in the PA for no further action at the following sites: Hangars 2, 3, 4, 6, and 7; the Fire Station; the Vehicle Maintenance Facility; AFFF Release Area; and the POL Facility. Additionally, DEC asserts that the following potential sources areas should be investigated during future site inspection efforts: 1) The wastewater treatment settling pond(s) and wastewater discharge point, since the drinking water gallery is known to be contaminated with PFAS; 2) any areas where biosolids were spread or disposed of on the island, since the water gallery is known to be contaminated with PFAS; and 3) any landfills/disposal sites on the island where materials used during AFFF release cleanups, such as the cleanup after the release in Hangar 8, were placed.	Melinda Brunner
10/9/2019	Update or Other Action	Approved 2019 Remedial Action Operations, land Use/Institutional Control Supplemental Work Plan.	William Schmaltz
6/25/2020	Document, Report, or Work plan Review - other	The purpose of this project is to continue environmental long-term management at multiple sites at Eareckson AS, Alaska. The objectives of this project were to conduct groundwater sampling at eight sites, surface water sampling at four sites, sediment sampling at three sites, conduct IC inspections at 19 sites, and conduct an assessment of necessary repairs at LF026. The assessment of LF026 is documented in a separate technical memorandum; this LTM report presents the findings of the IC inspections and the results of groundwater, surface water, and sediment sampling.	Darren Mulkey
6/25/2020	Document, Report, or Work plan Review - other	"Draft Technical Project Report, 2019 Environmental Long Term Management Activities, Eaceckson Air Station, Sites FT001, FT002, FT003, OT048, SS007, SS010, SS023, SS025, ST009, ST035, ST039, ST044, ST046, ST050, ST051, LF015, LF018, LF024, and LF026, May 2020". The purpose of this project is to continue environmental long-term management at multiple sites at Eareckson AS, Alaska. The objectives of this project were to conduct groundwater sampling at eight sites, surface water sampling at four sites, sediment sampling at three sites, conduct IC inspections at 19 sites, and conduct an assessment of necessary repairs at LF026. The assessment of LF026 is documented in a separate technical memorandum; this LTM report presents the findings of the IC inspections and the results of groundwater, surface water, and sediment sampling.	Darren Mulkey
6/25/2020	Institutional Control Periodic Reporting	2019 Technical Project Report. The purpose of this project is to continue environmental long-term management at multiple sites at Eareckson AS, Alaska. The objectives of this project were to conduct groundwater sampling at eight sites, surface water sampling at four sites, sediment sampling at three sites, conduct IC inspections at 19 sites, and conduct an assessment of necessary repairs at LF026. The assessment of LF026 is documented in a separate technical memorandum; this LTM report presents the findings of the IC inspections and the results of groundwater, surface water, and sediment sampling.	Darren Mulkey
6/16/2021	Update or Other Action	On 6/16/2021 ADEC approved the Final Uniform Federal Policy-Quality Assurance Project Plan, Remedial Investigations for Per-and Polyfluoroalkyl Substances at Various Sites (FT002, FT003, OT048, and SS060P) at Eareckson Air Force Station dated June 2021. ADEC accepted the document without the update to work plan for the Stage II sampling design optimized after the Stage I field work and sampling results review. ADEC recognizes, that due to short field season, there is not enough time to finalize the revisions of the document to address the changes. ADEC, Air Force and Terra tech attended a meeting on June 10, 2021, where Terra Tech presented the Stage I results and the proposed optimized work plan for Stage II.. ADEC agreed with the optimized approach field work changes for the Stage II site investigation, and accepted the presentation materials as a sufficient documentation for the revision of the Stage II field work plan for the document referenced above.	Daniela Fawcett
4/27/2022	Update or Other Action	On 4/27/2022 ADEC approved the Eareckson Air Station, Alaska, REMEDIAL PROCESS OPTIMIZATION REPORT dated April 2022. This Remedial Process Optimization (RPO) Report presents an evaluation of the effectiveness of current selected site remedies and makes recommendations for optimization of the IWM Program, as appropriate to establish a more integrated groundwater monitoring program at Eareckson AS. RPO is a systematic approach for evaluating and improving the effectiveness of site remediation without increasing site risk. This RPO Report presents a site-by-site evaluation of effectiveness of the sites selected remedy and provides recommendations to: • Streamline groundwater monitoring. • Develop a holistic approach to site management. • Maintain the remedial action objectives (RAOs) set forth in established Record of Decisions (RODs) and Decision Documents (DDs).	Daniela Fawcett
6/5/2023	Document, Report, or Work plan Review - other	DEC provided review comments for the "Draft Uniform Federal Policy-Quality Assurance Project Plan (UFP-QAPP) Addendum for Supplemental Remedial Investigations (RI) for Per- and Polyfluoroalkyl Substances (PFAS) at Sites FT002P-SUB, FT003P-SUB, SS060P, and SS064P at Eareckson Air Force Station (AS), Alaska (dated May 26, 2023)." The document is an addendum to the two previous work plans, one dated June 2021, and the other dated March 2023 (both describing PFAS work). The objectives outlined for this next stage of work are to conduct additional PFAS sampling to characterize the vertical and lateral extents of PFAS in the soil, groundwater, sediment and surface water.	Erica Blake
6/27/2023	Document, Report, or Work plan Review - other	DEC provided comments for the Draft Final 2021 Long Term Management, Land Use and Institutional Controls Report Eareckson Air Station, Shemya, Alaska Sites CS566, DA002/DA002A, DA003, FT001, FT002, FT003, LF015, LF018, LF024, LF026, ML001, MU001, OD001, OT048, OT617, PL560, PL575, SS005, SS007, SS010, SS012, SS023, SS025, ST009, ST035, ST039, ST044, ST046, ST050, ST051, TA555, TA556, TA616, TU553, TU554, TU558, TU559, TU567, TU568, XU912, ZZ001, dated June 2023.The report describes the institutional control inspections and sampling efforts conducted during November 15 through November 30th, 2021. Forty-two different sites were investigated at the Eareckson Air Station located on Shemya Island, Alaska. Groundwater was sampled at nine sites, surface water was sampled at five sites, and sediment sampling was conducted at two sites. Contaminants above cleanup levels remain present at most sites with stable or non-discernable trends. Most land use controls appear to be in good condition and Monitoring and continued inspections were recommended for all sites.	Ginna Quesada
6/29/2023	Document, Report, or Work plan Review - other	DEC provided approval for the "Final Uniform Federal Policy-Quality Assurance Project Plan (UFP-QAPP) Addendum for Supplemental Remedial Investigations (RI) for Per- and Polyfluoroalkyl Substances (PFAS) at Sites FT002P-SUB, FT003P-SUB, SS060P, and SS064P at Eareckson Air Force Station (AS), Alaska, dated June 22, 2023" to the U.S. Air Force. The document described additional activities to characterize the lateral and vertical extents of per-and polyfluoroalkyl substance (PFAS) contamination at four sites (FT002P-SUB, FT003P-SUB, SS060P and SS064P). The work is planned to be conducted during the summer 2023 field season.	Erica Blake
7/3/2023	Document, Report, or Work plan Review - other	DEC submitted responses to comments for the Draft Final 2021 Long Term Management, Land Use and Institutional Controls Report Eareckson Air Station, Shemya, Alaska Sites CS566, DA002/DA002A, DA003, FT001, FT002, FT003, LF015, LF018, LF024, LF026, ML001, MU001, OD001, OT048, OT617, PL560, PL575, SS005, SS007, SS010, SS012, SS023, SS025, ST009, ST035, ST039, ST044, ST046, ST050, ST051, TA555, TA556, TA616, TU553, TU554, TU558, TU559, TU567, TU568, XU912, ZZ001, dated June 2023.	Ginna Quesada
7/6/2023	Document, Report, or Work plan Review - other	DEC provided comments for the Technical Memorandum: Granulated activated carbon breakthrough calculation/analysis for on-site treatment of Per- and Polyfluoroalkyl Substances -impacted aqueous investigation-derived waste for the Eareckson Air Station 2023 Per- and Polyfluoroalkyl Substances Site Inspection and Remedial Investigation Fieldwork, dated May 25, 2023.	Ginna Quesada
7/21/2023	Document, Report, or Work plan Review - other	DEC approved the Technical Memorandum: Granulated activated carbon breakthrough calculation/analysis for on-site treatment of Per- and Polyfluoroalkyl Substances -impacted aqueous investigation-derived waste for the Eareckson Air Station 2023 Per- and Polyfluoroalkyl Substances Site Inspection and Remedial Investigation Fieldwork, dated July 21, 2023	Ginna Quesada
8/3/2023	Long Term Monitoring Workplan or Report Review	DEC approved the "Final 2021 Long Term Management, Land Use and Institutional Controls Report Eareckson Air Station, Shemya, Alaska Sites CS566, DA002/DA002A, DA003, FT001, FT002, FT003, LF015, LF018, LF024, LF026, ML001, MU001, OD001, OT048, OT617, PL560, PL575, SS005, SS007, SS010, SS012, SS023, SS025, ST009, ST035, ST039, ST044, ST046, ST050, ST051, TA555, TA556, TA616, TU553, TU554, TU558, TU559, TU567, TU568, XU912, ZZ001, dated July 2023." The report recommends continuing with land-use control site inspections and monitoring the groundwater until all remedial objectives are met.	Erica Blake

Action Date

Action

Description

DEC Staff

9/1/1984

Preliminary Assessment Approved

Installation Restoration Program, Phase I Records Search, 5073rd Air Base Group, Shemya Air Force Base, Alaska (dated September 1984) prepared by JRB Associates

Former Staff

12/30/1985

Interim Removal Action Approved

(Undated) Alaska Cleanup Effort, Shemya History 1975 - 1985. Internal Report. Prepared by 5099th CEOS.

Former Staff

8/10/1990

Update or Other Action

Installation Restoration Program, Stage I Final Technical Report for Shemya Air Force Base, prepared by CH2M Hill

Former Staff

2/1/1993

Update or Other Action

Shemya Air Force Base, Alaska 1992 Installation Restoration Program Field Investigation Report, prepared by CH2M Hill; report finalized in February 1993

Ray Burger

1/15/1996

Site Characterization Report Approved

Final Remedial Investigation / Feasibility Study Report, Volume III, Eareckson Air Station, Alaska (Formerly Shemya Air Force Base Alaska).

Ray Burger

3/15/1996

Update or Other Action

Final Remedial Investigation / Feasibility Study Report, Volume IV, Eareckson Air Station, Alaska (Formerly Shemya Air Force Base Alaska).

Ray Burger

2/5/1999

Update or Other Action

Remedial Investigation Basewide Groundwater Monitoring Report, August - September 1998, Basewide Monitoring Activities and Findings (dated January 1999)

Gretchen Pikul

7/3/2001

Update or Other Action

Technical Memorandum - Risk Assessment Assumptions for Decision Documents (draft final dated January 8, 2001, ADEC comment letter dated March 19, 2001, comment resolution meeting on May 18, 2001, final received June 11, 2001, ADEC e-mail comments after reviewing final document dated July 3, 2001).

Gretchen Pikul

12/10/2001

Update or Other Action

Decision Document Report Volumes III and IV (draft dated March 1996; draft final dated April 1997 and received May 1997; ADEC comment letter dated October 1, 1997 with extensive comments; related meetings in 1998 on October 30, November 23, November 24, and December 30; related meetings in 1999 on January 20 and 26, February 2 and 25, June 22-25 during site visit, August 24 during FY00 project scoping meeting, and October 1; received Review Draft Decision Documents on November 30, 1999 ADEC comment letters in February 2000; related meetings in 2000 on January 4; related meetings in 2001 on January 4 and 16; ADEC comment letter on Draft Final Technical Memorandum - Risk Assessment Assumptions for Decision Documents (dated March 19) with comment resolution meeting on May 18, final memorandum dated June 2001; draft Proposed Plan for 6 sites received August 24, ADEC comment letter dated September 19, 'response to comments' received December 10, 2001).

Gretchen Pikul

8/31/2004

Update or Other Action

Proposed Plan for Remedial Action; 1st draft dated July 2003 and received on July 16; received 1st draft of updated risk assessments on July 30; ADEC commented on August 4 and 5; comment resolution meeting August 22 and 27; internal briefing August 26; final Proposed Plan delayed due to funding issues and changes in Air Force guidance and policy; Proposed Plan comment resolution meeting on March 15, 2004; ADEC participated in calls and e-mails with Air Force contractor regarding Proposed Plan status and wording in April and May 2004; 2nd draft Proposed Plan submitted on June 1, 2004 and ADEC sent comments via e-mail on June 3; 2nd draft of updated risk assessments for FT01 and FT03, and FT02 and SS07 received June 7 and 14, respectively; ADEC comments (Lindsay Smith, ADEC Risk Assessor) were sent on July 1; July 22 ADEC call to Air Force on status of Updated Risk Assessments and comment resolution meeting date; Updated Risk Assessments comment resolution teleconference on July 26 – updated and final Air Force Comment Response, cumulative risk calculation spreadsheets, and information on outstanding issues to be submitted by early 1st week of August; ADEC sent e-mails on status of outstanding deliverables on August 6 and 13, e-mails and calls regarding this information occurred in August and information will not be available before September 1 for ADEC Risk Assessor to review (ADEC Risk Assessor to be back in office in October 2004).

Gretchen Pikul

11/1/2004

Update or Other Action

2004 Supplemental Field Investigations at Sites LF18, FT01, FT02, and FT03 (sampling to address data gaps prior to ROD for referenced sites); draft report dated October 2004 received November 1, 2004; ADEC issued comment letter dated December 10, 2004; comment resolution meeting held on December 20; based on findings additional groundwater sample collected from MW-01 at Site LF18 for DRO/PAH in January 2005; final report received January 20, 2005; ADEC issued approval letter on January 25, 2005.

Jeff Norberg

8/5/2005

Proposed Plan

Proposed Plan for Eareckson AS Sites FT01, FT02, FT03, and SS07; revised draft dated February 2005 received on February 11 (see related entry on August 31, 2004); ADEC comment letter issued on March 10, 2005; comment resolution meeting during site visit on March 15, 2005; ADEC participated in calls and e-mails with Air Force contractor regarding Proposed Plan status and outstanding issues related to updated risk assessment data from May through July 2005; Risk assessment data approved by State Risk Assessor Aug 2005; Final Proposed Plan submitted and approved on August 5, 2005

Jeff Norberg

8/25/2005

Meeting or Teleconference Held

Public meeting held August 24, 2005 1900 – 2100 hrs at the Loussac Library to discuss Proposed Plan for Eareckson AS Sites FT01, FT02, FT03, and SS07

Jeff Norberg

10/21/2010

CERCLA ROD Approved

ADEC and USAF representatives have signed the Record of Decision for three Fire Training Grounds at Eareckson Air Station. Based on the results of environmental investigations conducted at the three Fire Training Grounds addressed in this Record of Decision, no CERCLA hazardous substances are considered COCs or COECs and the USAF has determined that no action is necessary under CERCLA to protect public health or welfare of the environment at any of the three Environmental Restoration Sites. ADEC Contaminated Sites Staff concurred that the slelcted remedy complies with state law. Investigations conducted at the FT001, FT002, and FT003 have shown that the contamination is from discharges of petroleum products and, therefore, there is no action necessary under CERCLA and no remedy is being selected under CERCLA. Metals were detected at these three sites; however, there are no antthropogenic sources for these metals at the three fire training sites and these sites will contain a requirement for confirmation sampling for metals to verify that the conclusion that they are not antropogenic in origin. Additionally groundwater and surface water monitoring will be conducted for petroleum products under the State Decision Document.

Jonathan Schick

10/21/2010

Update or Other Action

The Final Non-CERCLA Decision Document was signed by USAF and ADEC representatives for three Fire Training Grounds at Eareckson Air Station. As lead agent under CERCLA, the USAF has issued a no action ROD under separate cover for these sites - in part because petorleum ius not considered a hazardous substance under the CERCLA petroleum exclusion. Because petroleum is a hazardous substance under state law, these sites need to be addressed under state regulations. At the Fire Department Foam Training Area (FT003) the risks to human health and the environment identified were due to metals (aluminum and chromium) that are believed to be naturally occurring. However, petroleum hydrocarbon levels in the subsurface soils and groundwater exceed ADEC cleanup levels. The selected reemedy at FT003 includes ICs to restrict subsurface activities and monitored natural attenuation of groundwater. Additional sampling and analysis for metals in the site groundwater will also be conducted to substantiate that the metals are naturally occurring.

Jonathan Schick

6/25/2011

Update or Other Action

This site was included in the 2010 Record of Decision but was not included in the contract for groundwater sampling with the other Fire Training Ground Sites as it was not initially anticipated to be part of the Long Term Monitoring Projects. The ROD determined that the groundwater will be sampled every 2 years to determine if the metals are naturally occurring and to monitor the concentrations of the petroleum constituents.

Jonathan Schick

6/25/2012

Update or Other Action

No sampling has been conducted at this site but it should be included in the next round of sampling for the Fire Training Ground Sites as determined in the September 2010 Record of Decision.

Jonathan Schick

12/1/2012

Update or Other Action

The USAF submitted the 2012 Land Use Control Management Plan, which included land use controls for FT03 at Eareckson Air Station.

Jessica Morris

10/10/2013

Update or Other Action

The ADEC Contaminated Sites Program approved the Environmental Long Term Management Report for several sites. Continued long term monitoring was recommended for FT003.

Jessica Morris

1/9/2014

Update or Other Action

The ADEC Contaminated Site Program approved the Final Eareckson Air Station Five Year Review Report. The report recommended removing surface metals debris at FT003. Recommedations also included conducting sampling to determine the presence/absence of PFOS/PFOAs.

Jessica Morris

8/8/2014

Institutional Control Record Established

Institutional Controls established and entered into the database. The ICs include the following 1) The Eareckson AS Base General Base will contain a map indicating restrictions for groundwater use and excavation of soil. Dig permits are issued by the Base Operating Contractor prior to any excavation or well installation at the Base. 2) The USAF will obtain prior concurrence from ADEC to terminate the ICs, modify land use, or allow other actions that might disrupt the protectiveness of the ICs. 3) The ICs will remain in effect until the petroleum hydrocarbons, VOCs, and SVOCs in soil are found to be less that the applicable cleanup levels.

Jessica Morris

8/8/2014

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 73820 POL soils from Fire Training Activities.

Jessica Morris

8/27/2014

Long Term Monitoring Established

The ADEC Contaminated Sites Program approved the Final Work Plan for Environmental Long Term Monitoring and Site Inspections ((FT001, FT002, FT003, OT048, SS007, LF015, LF018, LF024, LF026, SS010, SS023, ST035, SS025, ST009, ST044, ST046, ST050, ST051) and Limited Site Characterization (Building 3055 Area) at Eareckson Air Station, Alaska. This scope of work is not sufficient to meet the long term monitoring objectives outlined in the most recently established RODs. The USAF will hold a scoping meeting with ADEC to plan additional well installation to meet these long term monitoring requirements.

Jessica Morris

5/12/2015

Meeting or Teleconference Held

The ADEC Contaminated Sites Program participated in a project scoping meeting with the US Air Force regarding various sites at Eareckson Air Station. A remedial investigation/feasibility study for multiple compliance and LUST sites is scheduled to occur in 2015/2016. Additional groundwater wells will also be installed for long term monitoring at several IRP sites.

Jessica Morris

5/20/2015

Institutional Control Periodic Reporting

The ADEC Contaminated Sites Program approved the Final Report for Environmental Long Term Monitoring and Site Inspections ((FT001, FT002, FT003, OT048, SS007, LF015, LF018, LF024, LF026, SS010, SS023, ST035, SS025, ST009, ST044, ST046, ST050, ST051) at Eareckson Air Station, Alaska.

Jessica Morris

7/9/2015

Institutional Control Update

ADEC approved the July 2015 U.S. Air Force Land Use Control Management Plan, Pacific Air Forces Regional Support Center Installations. The plan includes land use controls for FT003 at Eareckson Air Station.

Jessica Morris

10/22/2015

Update or Other Action

The ADEC Contaminated Sites Program reviewed and commented on a draft scope of work for investigation, remedial process optimization, and long term management studies at several sites for Eareckson Air Station.

Jessica Morris

11/14/2016

Site Visit

ADEC staff travelled to Eareckson Air Station for 4 days to conduct site visits and become familiar with the ecology and topography of the island. Site visits were conducted to all pertinent sites and meetings were held to with ADEC and USAF to discuss a path forward for the sites.

Jessica Morris

3/31/2017

Document, Report, or Work plan Review - other

The ADEC Contaminated Sites Program approved the Final UFP-QAPP Site Investigation for Perfluorinated Compounds and Long Term Management Studies, Eareckson Air Station. The work plan was approved with the condition that the monitoring program proposed was not sufficient to meet the requirements in the RODs. ADEC requires a work plan for remedy implementation to establish an adequate monitoring program.

Jessica Morris

11/27/2017

Site Visit

ADEC staff travelled to Eareckson Air Station for 3 days to conduct site visits and institutional control inspections. Site visits were conducted to all pertinent sites and meetings were held to with ADEC and USAF to discuss a path forward for the sites.

Jessica Morris

5/2/2018

Document, Report, or Work plan Review - other

The ADEC Contaminated Sites Program submitted comments on the Draft Remedial Process Optimization Report for Eareckson Air Station. The purpose of the report was to present an evaluation of the effectiveness of the current selected site remedies and make recommendations for optimization of an island-wide monitoring and management program for contaminated sites at Eareckson. ADEC had numerous comments on the document, and requested a project team meeting to further discuss a more effective and efficient program at Eareckson.

Jessica Morris

5/8/2018

Site Characterization Report Approved

The ADEC Contaminated Sites Program approved the Final Perflourinated Compounds Investigation Report for Eareckson Air Station.

Jessica Morris

1/8/2019

Institutional Control Compliance Review

The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program received a copy of the Final Long Term Monitoring and Institutional Controls Inspection Report for Eareckson Air Station. The report is accepted as final documentation of the field activities. The report is approved with the conditions noted in the ADEC’s comments 1/8/19 letter. The field efforts completed are not considered sufficient to meet the overall long term monitoring requirements outlined in the site records of decision and regulations for closure end point criteria. ADEC is working with the USAF to develop a more efficient island-wide long term monitoring strategy for Eareckson Air Station.

Jessica Morris

2/21/2019

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 73820 POL soils from Fire Training Activities.

Jessica Morris

5/8/2019

CERCLA PA

DEC reviewed the "Draft Preliminary Assessment Report for Aqueous Film Forming Foam at Eareckson Air Station, Alaska” (the PA) dated October 2017, and provided comments to the U.S. Air Force on the document. DEC disagrees with the recommendations in the PA for no further action at the following sites: Hangars 2, 3, 4, 6, and 7; the Fire Station; the Vehicle Maintenance Facility; AFFF Release Area; and the POL Facility. Additionally, DEC asserts that the following potential sources areas should be included in the PA, and should be investigated during site inspection efforts in the future: 1) The wastewater treatment settling pond(s) and wastewater discharge point, since the drinking water gallery is known to be contaminated with PFAS; 2) any areas where biosolids were spread or disposed of on the island, since the water gallery is known to be contaminated with PFAS; and 3) any landfills/disposal sites on the island where materials used during AFFF release cleanups, such as the cleanup after the release in Hangar 8, were placed.

Melinda Brunner

6/13/2019

CERCLA SI

ADEC approved the 2019 Eareckson AS PFOA and PFOS SI QAPP. The purpose of this SI is to gain an understanding of project site conditions and to determine if a release of PFOA or PFOS has occurred in the vicinity of the island's drinking water gallery and nearby hangers, where data gaps related to the presence of PFOA and PFOS have been identified.

Darren Mulkey

7/5/2019

CERCLA ROD Periodic Review

DEC provided comments to the U.S. Air Force on the "Five-Year Review Report and Period Review for Eareckson Air Station, Shemya Island, Alaska, Draft” dated November 2018 on July 5, 2019.

Melinda Brunner

7/29/2019

CERCLA PA

DEC acknowledged receipt to the U.S. Air Force of the "Final Preliminary Assessment Report for Aqueous Film Forming Foam at Eareckson Air Station, Alaska” (the PA) dated June 2019 by sending a letter dated July 29, 2019. DEC disagrees with the recommendations in the PA for no further action at the following sites: Hangars 2, 3, 4, 6, and 7; the Fire Station; the Vehicle Maintenance Facility; AFFF Release Area; and the POL Facility. Additionally, DEC asserts that the following potential sources areas should be investigated during future site inspection efforts: 1) The wastewater treatment settling pond(s) and wastewater discharge point, since the drinking water gallery is known to be contaminated with PFAS; 2) any areas where biosolids were spread or disposed of on the island, since the water gallery is known to be contaminated with PFAS; and 3) any landfills/disposal sites on the island where materials used during AFFF release cleanups, such as the cleanup after the release in Hangar 8, were placed.

Melinda Brunner

10/9/2019

Update or Other Action

Approved 2019 Remedial Action Operations, land Use/Institutional Control Supplemental Work Plan.

William Schmaltz

6/25/2020

Document, Report, or Work plan Review - other

The purpose of this project is to continue environmental long-term management at multiple sites at Eareckson AS, Alaska. The objectives of this project were to conduct groundwater sampling at eight sites, surface water sampling at four sites, sediment sampling at three sites, conduct IC inspections at 19 sites, and conduct an assessment of necessary repairs at LF026. The assessment of LF026 is documented in a separate technical memorandum; this LTM report presents the findings of the IC inspections and the results of groundwater, surface water, and sediment sampling.

Darren Mulkey

6/25/2020

Document, Report, or Work plan Review - other

"Draft Technical Project Report, 2019 Environmental Long Term Management Activities, Eaceckson Air Station, Sites FT001, FT002, FT003, OT048, SS007, SS010, SS023, SS025, ST009, ST035, ST039, ST044, ST046, ST050, ST051, LF015, LF018, LF024, and LF026, May 2020". The purpose of this project is to continue environmental long-term management at multiple sites at Eareckson AS, Alaska. The objectives of this project were to conduct groundwater sampling at eight sites, surface water sampling at four sites, sediment sampling at three sites, conduct IC inspections at 19 sites, and conduct an assessment of necessary repairs at LF026. The assessment of LF026 is documented in a separate technical memorandum; this LTM report presents the findings of the IC inspections and the results of groundwater, surface water, and sediment sampling.

Darren Mulkey

6/25/2020

Institutional Control Periodic Reporting

2019 Technical Project Report. The purpose of this project is to continue environmental long-term management at multiple sites at Eareckson AS, Alaska. The objectives of this project were to conduct groundwater sampling at eight sites, surface water sampling at four sites, sediment sampling at three sites, conduct IC inspections at 19 sites, and conduct an assessment of necessary repairs at LF026. The assessment of LF026 is documented in a separate technical memorandum; this LTM report presents the findings of the IC inspections and the results of groundwater, surface water, and sediment sampling.

Darren Mulkey

6/16/2021

Update or Other Action

On 6/16/2021 ADEC approved the Final Uniform Federal Policy-Quality Assurance Project Plan, Remedial Investigations for Per-and Polyfluoroalkyl Substances at Various Sites (FT002, FT003, OT048, and SS060P) at Eareckson Air Force Station dated June 2021. ADEC accepted the document without the update to work plan for the Stage II sampling design optimized after the Stage I field work and sampling results review. ADEC recognizes, that due to short field season, there is not enough time to finalize the revisions of the document to address the changes. ADEC, Air Force and Terra tech attended a meeting on June 10, 2021, where Terra Tech presented the Stage I results and the proposed optimized work plan for Stage II.. ADEC agreed with the optimized approach field work changes for the Stage II site investigation, and accepted the presentation materials as a sufficient documentation for the revision of the Stage II field work plan for the document referenced above.

Daniela Fawcett

4/27/2022

Update or Other Action

On 4/27/2022 ADEC approved the Eareckson Air Station, Alaska, REMEDIAL PROCESS OPTIMIZATION REPORT dated April 2022. This Remedial Process Optimization (RPO) Report presents an evaluation of the effectiveness of current selected site remedies and makes recommendations for optimization of the IWM Program, as appropriate to establish a more integrated groundwater monitoring program at Eareckson AS. RPO is a systematic approach for evaluating and improving the effectiveness of site remediation without increasing site risk. This RPO Report presents a site-by-site evaluation of effectiveness of the sites selected remedy and provides recommendations to: • Streamline groundwater monitoring. • Develop a holistic approach to site management. • Maintain the remedial action objectives (RAOs) set forth in established Record of Decisions (RODs) and Decision Documents (DDs).

Daniela Fawcett

6/5/2023

Document, Report, or Work plan Review - other

DEC provided review comments for the "Draft Uniform Federal Policy-Quality Assurance Project Plan (UFP-QAPP) Addendum for Supplemental Remedial Investigations (RI) for Per- and Polyfluoroalkyl Substances (PFAS) at Sites FT002P-SUB, FT003P-SUB, SS060P, and SS064P at Eareckson Air Force Station (AS), Alaska (dated May 26, 2023)." The document is an addendum to the two previous work plans, one dated June 2021, and the other dated March 2023 (both describing PFAS work). The objectives outlined for this next stage of work are to conduct additional PFAS sampling to characterize the vertical and lateral extents of PFAS in the soil, groundwater, sediment and surface water.

Erica Blake

6/27/2023

Document, Report, or Work plan Review - other

DEC provided comments for the Draft Final 2021 Long Term Management, Land Use and Institutional Controls Report Eareckson Air Station, Shemya, Alaska Sites CS566, DA002/DA002A, DA003, FT001, FT002, FT003, LF015, LF018, LF024, LF026, ML001, MU001, OD001, OT048, OT617, PL560, PL575, SS005, SS007, SS010, SS012, SS023, SS025, ST009, ST035, ST039, ST044, ST046, ST050, ST051, TA555, TA556, TA616, TU553, TU554, TU558, TU559, TU567, TU568, XU912, ZZ001, dated June 2023.The report describes the institutional control inspections and sampling efforts conducted during November 15 through November 30th, 2021. Forty-two different sites were investigated at the Eareckson Air Station located on Shemya Island, Alaska. Groundwater was sampled at nine sites, surface water was sampled at five sites, and sediment sampling was conducted at two sites. Contaminants above cleanup levels remain present at most sites with stable or non-discernable trends. Most land use controls appear to be in good condition and Monitoring and continued inspections were recommended for all sites.

Ginna Quesada

6/29/2023

Document, Report, or Work plan Review - other

DEC provided approval for the "Final Uniform Federal Policy-Quality Assurance Project Plan (UFP-QAPP) Addendum for Supplemental Remedial Investigations (RI) for Per- and Polyfluoroalkyl Substances (PFAS) at Sites FT002P-SUB, FT003P-SUB, SS060P, and SS064P at Eareckson Air Force Station (AS), Alaska, dated June 22, 2023" to the U.S. Air Force. The document described additional activities to characterize the lateral and vertical extents of per-and polyfluoroalkyl substance (PFAS) contamination at four sites (FT002P-SUB, FT003P-SUB, SS060P and SS064P). The work is planned to be conducted during the summer 2023 field season.

Erica Blake

7/3/2023

Document, Report, or Work plan Review - other

DEC submitted responses to comments for the Draft Final 2021 Long Term Management, Land Use and Institutional Controls Report Eareckson Air Station, Shemya, Alaska Sites CS566, DA002/DA002A, DA003, FT001, FT002, FT003, LF015, LF018, LF024, LF026, ML001, MU001, OD001, OT048, OT617, PL560, PL575, SS005, SS007, SS010, SS012, SS023, SS025, ST009, ST035, ST039, ST044, ST046, ST050, ST051, TA555, TA556, TA616, TU553, TU554, TU558, TU559, TU567, TU568, XU912, ZZ001, dated June 2023.

Ginna Quesada

7/6/2023

Document, Report, or Work plan Review - other

DEC provided comments for the Technical Memorandum: Granulated activated carbon breakthrough calculation/analysis for on-site treatment of Per- and Polyfluoroalkyl Substances -impacted aqueous investigation-derived waste for the Eareckson Air Station 2023 Per- and Polyfluoroalkyl Substances Site Inspection and Remedial Investigation Fieldwork, dated May 25, 2023.

Ginna Quesada

7/21/2023

Document, Report, or Work plan Review - other

DEC approved the Technical Memorandum: Granulated activated carbon breakthrough calculation/analysis for on-site treatment of Per- and Polyfluoroalkyl Substances -impacted aqueous investigation-derived waste for the Eareckson Air Station 2023 Per- and Polyfluoroalkyl Substances Site Inspection and Remedial Investigation Fieldwork, dated July 21, 2023

Ginna Quesada

8/3/2023

Long Term Monitoring Workplan or Report Review

DEC approved the "Final 2021 Long Term Management, Land Use and Institutional Controls Report Eareckson Air Station, Shemya, Alaska Sites CS566, DA002/DA002A, DA003, FT001, FT002, FT003, LF015, LF018, LF024, LF026, ML001, MU001, OD001, OT048, OT617, PL560, PL575, SS005, SS007, SS010, SS012, SS023, SS025, ST009, ST035, ST039, ST044, ST046, ST050, ST051, TA555, TA556, TA616, TU553, TU554, TU558, TU559, TU567, TU568, XU912, ZZ001, dated July 2023." The report recommends continuing with land-use control site inspections and monitoring the groundwater until all remedial objectives are met.

Erica Blake

Contaminant Information

Name	Level Description	Media
DRO	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil
DRO	> Table C	Groundwater
GRO	> Table C	Groundwater

Name

Level Description

Media

Comments

DRO

Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation

Soil

DRO

> Table C

Groundwater

GRO

> Table C

Groundwater

Control Type

Type	Details
Signed CS Determination	ICs include: - updates to the Eareckson AS Base General Plan to include restriction areas for soil and groundwater - update USAF land records to include site boundaries and IC requirements. - conduct visual inspections in conjuction with MNA every 2 years - conduct MNA in groundwater at FT003 every two years.

Type

Details

Signed CS Determination

ICs include: - updates to the Eareckson AS Base General Plan to include restriction areas for soil and groundwater - update USAF land records to include site boundaries and IC requirements. - conduct visual inspections in conjuction with MNA every 2 years - conduct MNA in groundwater at FT003 every two years.

Requirements

Description	Details
Excavation / Soil Movement Restrictions
Groundwater Monitoring
Groundwater Use Restrictions
Periodic Review

Description

Details

Excavation / Soil Movement Restrictions

Groundwater Monitoring

Groundwater Use Restrictions

Periodic Review

2021 Remedial Investigation Report

Site Summary

2010 Decison Document FT003

No associated sites were found.

Missing Location Data

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Site Report: Eareckson Air Station FT03

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

2021 Remedial Investigation Report

Site Summary

2010 Decison Document FT003

Missing Location Data

State of Alaska Department of Environmental Conservation