Site Report: King Salmon AS GWZ 5 FT004 Fire Training Area 4

Site Name:	King Salmon AS GWZ 5 FT004 Fire Training Area 4
Address:	Fire Training Area 4, Groundwater Zone 5 (OT31), King Salmon, AK 99613
File Number:	2569.38.019.05
Hazard ID:	2841
Status:	Active
Staff:	Ginna Quesada, 9074515960 ginna.quesada@alaska.gov
Latitude:	58.673056
Longitude:	-156.626111
Horizontal Datum:	NAD27

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

Site is within Groundwater Zone 5 (OT31). Fire Training Area No. 4, potential material disposed includes JP-4 and waste oil/solvents. Perfluorinated compounds (PFC) have been detected in sampling conducted by the Air Force. This site is located approximately 1600 feet northeast of the centerline of Runway 11/29. It was used for several years until 1980 for training in fighting aircraft fires. Old cars were used to simulate aircraft. Soil and groundwater are contaminated with petroleum and solvents (primarily TCE). The following investigation summary was taken from the Final 2014 Remedial Action Construction work plan. Surface and Subsurface Soil Soil samples were collected from FT004 in 1993 and 1996. In 1993 (USAF, 1995), three soil borings were drilled at FT004 and one of the borings was completed as a monitoring well. Two to three samples were collected from each boring at five-foot intervals for a total of eight samples (FT04A, B, and C). The samples were analyzed for diesel range organics (DRO), total petroleum hydrocarbons (TPH), volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs), pesticides, and polychlorinated biphenyls (PCBs). An additional surface sample was collected and analyzed for dioxins (FT04D). The VOC trichloroethene (TCE) was detected above the ADEC soil cleanup level in one sample (FT04B) at 10 feet below ground surface (bgs). Benzene was detected above the ADEC soil cleanup level in one sample (FT04A), also at 10 feet bgs. In addition, DRO was detected above the soil cleanup level in each borehole. The dioxin 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) was detected in one sample at 5.69 pg/g, below the 58 pg/g ADEC Method Two Migration to Groundwater cleanup level (ADEC, 2012). In 1996 (USAF, 1997), seven subsurface samples were collected from six borings. In addition, five surface samples were collected. DRO was detected above soil cleanup levels in two surface samples and one subsurface (10-feet bgs) sample. TCE was detected in the same samples; however, no TCE detections exceeded the ADEC soil cleanup level. In May of 2009, Paug-Vik conducted pre-excavation sampling to determine presence or absence of VOCs and dioxins. Four samples were collected at FT004. The VOC 1,3,5- Trimethylbenzene was detected in one sample at 26.6 mg/kg (33.5 mg/kg in the duplicate), above the 23 mg/kg ADEC Method Two Migration to Groundwater cleanup level. Dioxin levels were 1 pg/g or less in each sample. Since no dioxin has been found above cleanup levels in any sample collected in 1996 and in 2009, dioxin is no longer considered a contaminant of concern at this site. In fall 2009, an estimated 1,200 cubic yards of POL-contaminated soil were removed from Site FT004 (PVS, 2010). After the soil was excavated, samples were collected from the excavation walls (the bottom of the excavation reached the water table). Analysis of the samples, which varied in depth from 3 to 10 ft. bgs, indicated soil with various POL concentrations above the cleanup levels was still present at the site. Since TCE was not detected in any 8 of the samples, it is no longer considered a contaminant of concern at this site. The excavation was lined with reinforced plastic sheeting and backfilled with uncontaminated soil. In 2011, another 500 cubic yards of POL-contaminated soil were excavated from approximately half the circumference of the original excavation. All confirmation sample results from the 2011 excavation were below cleanup levels for all analytes. The contract limit was reached before the entire circumference could be assessed; soil with POL concentrations above the cleanup levels remains present in the remainder of the 2009 excavation boundary that was not extended in 2011. Groundwater A monitoring well was installed in 1993, and four additional wells were installed in 1996. In May 1997, all five wells (FT04-MW1 through MW5) were sampled (USAF, 2008b). Groundwater samples were analyzed for VOCs, DRO, and gasoline range organics (GRO). Well FT04-MW2 was found to have DRO, TCE, benzene, toluene, and ethylene dibromide (EDB) concentrations above their respective ADEC groundwater cleanup levels. In addition, well FT04-MW4 was found to have a concentration of EDB in exceedance of the ADEC ground water cleanup level. during the 2006 RPO activities (USAF, 2007), one new monitoring well was installed at a location downgradient from the contaminant plume (FT04-MW6). All six wells were sampled at this time; FT04-MW5 had concentrations of TCE, benzene, and toluene above the ADEC groundwater cleanup levels. No VOCs were detected in FT04-MW6, suggesting that this well is located downgradient of the plume. During the 2009 activities, the area around and including FT04-MW5 was excavated AF point of contact: Charley Peyton, Project Manager, 611th CES/CEV 10471 20th Street Suite 338, Elmendorf AFB, AK 99506-2270; Telephone 907-552-9765.

Action Information

Action Date	Action	Description	DEC Staff
6/15/1996	Update or Other Action	Treatability Study workplan for Fire Training Areas FT01 and FT04 (dated September 1995). Excavation and off site bioremediation of soil, instrinsic remediation of groundwater, and managed wetlands were recommended for FT01 and vicinity (RAPCON). Intrinsic remediation for soil and groundwater was recommended for FT04.	Louis Howard
11/15/1996	Update or Other Action	Aerial Photographic Analysis, King Salmon Airport Study Area. Prepared by EPA Region 10, Research and Development, Characterization, Research Division, TS-PIC-9710003S, dated November 1996.	Gretchen Pikul
3/15/1997	Update or Other Action	Feasibility Report (final revised) - dated March 1997. Preferred alternatives were identified for groundwater, wetlands, and soil in each 5 groundwater monitoring zones associated with the main base.	Gretchen Pikul
5/6/1997	Update or Other Action	Final Treatability Study Report for FT04 (draft dated January 1997, final dated May 1997) and Feasibility Study Screening Assessment (dated May 1997).	Gretchen Pikul
10/21/1997	Update or Other Action	RAPCON Excavation Activities and Summary of Findings, Fire Training Areas Numbers 1, 2, 3 and 4, King Salmon Airport (memorandum dated October 15, 1997).	Gretchen Pikul
10/21/1997	Update or Other Action	Technical Memorandum for Fire Training Areas 1 and 4, Summary of Findings and Recommendations May 1997 Groundwater Sampling Event (dated September 3, 1997).	Gretchen Pikul
11/28/2001	Update or Other Action	Remedial Process Optimization Scoping Visit Report - June 26-28, 2001 (no draft received; final received September 26, 2001 - many comments and issues to be resolved; comment resolution meeting during EPA Seattle meetings November 28, 2001).	Gretchen Pikul
11/29/2001	Meeting or Teleconference Held	Meeting with Air Force, ADEC, and EPA at EPA Seattle office - November 26-29, 2001.	Gretchen Pikul
1/28/2003	GIS Position Updated	Updated Quadrangle, Latitude, Longitude, Section, Township, and Range fields using TopoZone.com and site maps.	Former Staff
3/25/2004	Proposed Plan	Proposed Plan for Final Remedial Actions at Landfills and Fire Training Areas in Groundwater Zone 5; ADEC received electronic version via e-mail on November 12, 2003; general direction meeting on November 13; ADEC management briefing meeting on November 21; comment resolution meetings on November 24 and 25; draft final received December 12, 2003; PACAF and Air Staff comments received January 9, 2004; comment resolution meeting/teleconfernce with PACAF and Air Staff on January 22, 2004; comment resolution meeting with project managers on February 4, 2004; 2nd comment resolution teleconference / meeting with PACAF and Air Staff on March 11; ADEC received final Proposed Plan on March 25 and posted on ADEC webpage on March 30; Public comment period from March 27 to May 7, and public meeting on April 27.	Gretchen Pikul
7/20/2004	Update or Other Action	Implementation of Remedial Process Optimization (RPO) Recommendations Work Plan; draft dated and received in June 2004; ADEC comment letter dated June 28, 2004; Comment Response on July 9; comment resolution meeting on July 19; final received on July 20 (some errors are present – see Comment Response in work plan jacket for details).	Gretchen Pikul
10/7/2004	Update or Other Action	Record of Decision for Zone 5; preliminary meeting held on August 24, 2004; draft ROD received October 7 via e-mail.	Gretchen Pikul
11/15/2004	Meeting or Teleconference Held	Remedial Process Optimization (RPO) team met with Air Force, ADEC, and EPA at at contractor's office in San Antonio TX - November 8-12, 2004. The primary purpose of this meeting was to evaluate the current status of cleanup efforts at the King Salmon AS and draft the RPO report due in March 2005.	Jeff Norberg
6/16/2006	Update or Other Action	Implementation of Remedial Process Optimization (RPO) Recommendations Report; draft dated March 2005 received March 30, 2005; ADEC comment letter dated May 16, 2005; Air Force Comment Response and ADEC approval letter issued on May 20, 2005; final dated June 2006 received on June 16, 2006.	Jeff Norberg
1/31/2007	Update or Other Action	File number issued 2569.38.019.05.	Aggie Blandford
1/29/2008	Exposure Tracking Model Ranking	Initial ranking with ETM completed.	Jonathan Schick
10/21/2008	Site Visit	ADEC staff took part in a site visit to a number of pertinent sites at King Salmon Air Station over a 2 day visit. Sites, especially the pending Multi Site Inspection sites, were inspected for any visible evidence of contamination and potential sampling locations as the work plans are still being formulated. ADEC staff was accompanied to all of the sites by the Project managers from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, a discussion of the Multi-SIte inspection project, an update on the status of the Groundwater Zone 5 Records of Decision, and a brief discussion concerning the TCE treatibility Study in Groundwater Zone 1. The next RAB meeting has been tentatively scheduled for April 21, 2009.	Jonathan Schick
4/21/2009	Update or Other Action	ADEC staff conducted a site visit to pertinent sites at King Salmon Air Station over a 2 day visit. Sites were inspected for any visible evidence of contamination and to become more familiar with the layout and topography of the area. ADEC staff was accompanied to all of the sites by the Project manager from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, a discussion of the Multi-Site inspection project which is entering Phase II this summer, an update on the status of the Groundwater Zone 5 Records of Decision, and a brief discussion concerning the TCE treatibility Study in Groundwater Zone 1. The next RAB meeting has been tentatively scheduled for October, 2009.	Jonathan Schick
7/28/2010	Update or Other Action	Contaminated Sites Staff recieved a Draft version of the Report for Remedial Action Projects for LF006, FT004, OT010, Lake Camp and the Biocells.	Jonathan Schick
8/26/2010	Update or Other Action	Contaminated Sites Staff recieved a draft version of the work plan for additional remedial action at several sites including FT004, LF006, DA037 and SA039 where some batteries and lead impacted soil remain as well as additional POL contamination and drums are slated to be removed and also serveral stockpiles of pesticide contaminated soil will be containerized and shipped off-site. The plan's review is on a hold due to contracting issues with the Air Force.	Jonathan Schick
9/22/2010	Update or Other Action	Contaminated Sites Staff reviewed the work plans for battery, drum, and pesticide soil removal for various sites at King Salmon including FT004, LF006, DA037, and SA039. Comments were submitted to the Air Force Project Manager and they were regarding the need for additional detail about storage and shipment of impacted soils and also some questions about the figure depicting the pesticide impacted soil stockpiles that are slated to be shipped off-site for disposal. Additionally some text errors were corrected.	Jonathan Schick
9/24/2010	Update or Other Action	Contaminated Sites Staff recieved responses to our comments and concur with the changes made to the Draft version of the Battery, Drum and stockpile removal action work plan. Staff sent a letter to the USAF project manager approving the plan for implementation in the field.	Jonathan Schick
9/29/2010	Update or Other Action	Contaminated Sites Staff submitted a letter containing comments on the Draft Report for Remedial Action Projects for LF006, FT004, OT010, Lake Camp and the Biocells. The comments were regarding the use of propper Personal Protective Equipment at the PCB impacted sites and the inclusion of the Laboratory Data Review Checklist with the Final Report.	Jonathan Schick
10/5/2010	Update or Other Action	ADEC contaminated sites staff recieved a draft copy of a work plan for continuted excavation of petroleum impacted soil at the Fire Training Ground, FT004. The plan detailed the Air Force's plan to remove an additional 500 cubic yards of impacted soil this season.	Jonathan Schick
10/11/2010	Update or Other Action	ADEC Contaminated sites staff submitted a letter to the US Air Force with comments on the recently submitted excavation work plan for Fire Training Ground FT004. The plan detailed the previous confrimation sample results and depicted them on a figure. The plan proposed to removal an additional 500 cubic yards of impacted soils from the site. ADEC is concerned that an additional 500 cubic yards may not be adequate to achieve the remedial action objectives proposed for the site. The plan also proposed an elevated PID screening level for segregating soils on-site. ADEC staff stated in the letter that adjusting the PID action level for this site would not be appropriate.	Jonathan Schick
10/20/2010	Update or Other Action	ADEC staff conducted a site visit to pertinent sites at King Salmon Air Station over a 2 day visit. Sites were inspected for any visible evidence of contamination and to observe some of the work that is being conducted to remove POL impacted soils and PCB impacted soils at OT010. ADEC staff was accompanied to all of the sites by the Project manager from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, remedial action cleanup programs, and management of the IDW and soil in the biocells set up to add oxygen to the soil matrix to aid the degradation of the petroleum hydrocarbons. The next RAB meeting is scheduled for April 2011.	Jonathan Schick
1/5/2011	Update or Other Action	Contaminated Sites Staff recieved a copy of the Final Work Plans for Remedial Action Projects that were conducted in the summer and fall of 2010. The Remedial Actions included excavation and removal of PCB impacted soils at OT010, POL soils at FT004, Pesticides, POL and Lead impacted soils at the Circle Landfill, and on-going work at the Bioremediation Cells.	Jonathan Schick
4/8/2011	Update or Other Action	Contaminated Sites Staff recieved the Final Version of the 2009 Remedial Action Projects Report for LF006, FT004, OT010, Lake Camp, and the Biocells. The report was dated March 2011 and the comments submitted in September 2010 were incorporated into the Final Report.	Jonathan Schick
5/10/2011	Update or Other Action	Contaminated Sites Staff submitted an approval letter for the final version of the Report on the 2009 Remedial Action Projects for LF006, FT004, OT010, Lake Camp and the Biocells. ALl of the comments submitted were addressed and incorporated into the Final Report.	Jonathan Schick
1/11/2012	Document, Report, or Work plan Review - other	Contamianted Sites Staff recieved the Draft 2010 Removal Action Projects Report detailing the work completed at OT010, FT004, LF006, Lake Camp, and the Biocells. The report is dated January 2012.	Jonathan Schick
2/8/2012	Document, Report, or Work plan Review - other	Contaminated Sites Staff submitted a letter to the US Air Force Remedial Project Manager with commments on the Draft Remedial Action Projects Report that detailed the cleanup efforts at FT004, OT010, LF006, Lake Camp, and the Biocells. The comments were focused on clarification that many of the sites under this contract specifically in Groundwater Zone 5 were being cleaned up to levels proposed in a Draft Record of Decision that was never agreed to by ADEC.	Jonathan Schick
2/8/2012	Document, Report, or Work plan Review - other	Contaminated Sites Staff submitted a letter to the US Air Force Remedial Project Manager with commments on the Draft Remedial Action Projects Report that detailed the cleanup efforts at FT004, OT010, LF006, Lake Camp, and the Biocells. The comments were focused on clarification that many of the sites under this contract specifically in Groundwater ZOne 5 were being cleaned up to levels proposed in a Draft Record of Decision that was neve agreed to by ADEC.	Jonathan Schick
8/28/2014	Document, Report, or Work plan Review - other	Submit comments to US Air Force on the Draft "Work Plans for 2014 Remedial Action Construction at King Salmon Divert". Comments were minor. Work is scheduled for 2014 and should complete the remedial action for this site.	Guy Warren
9/2/2014	CERCLA Remedial Design/Remedial Action Plan Approved	Received Final Work Plan for 2014 Remedial Action Construction. Approval letter submitted 8/28/14 based on electronic submittal.	Guy Warren
6/27/2016	Document, Report, or Work plan Review - other	Approved the Final 2014 RA – Construction report. PFCs remain at this site above ADEC proposed cleanup levels. Down gradient wells FT04-MW3, FR04-MW4, and FT04-MW6 should be added to the groundwater monitoring program for PFCs.	Holly Weiss-Racine
6/29/2016	Document, Report, or Work plan Review - other	Approved the Final 2014 RA - LF006 and FT004 Well Install & Sampling report. In 2014, 3 new monitoring wells were installed (MW5R (a replacement for MW5), MW07 and MW08. Groundwater at MW5R and MW07 exceeded cleanup levels for DRO, GRO, and TCE. Groundwater at MW07 also exceeded the cleanup levels for benzene and toluene. Groundwater at all three monitoring wells exceeded the proposed cleanup levels for PFCs. All three new wells, as well as, groundwater monitoring wells MW1 and MW2 should be added to the groundwater monitoring program and sampled for DRO, GRO, VOCs, PFC, and EDB.	Holly Weiss-Racine
11/8/2016	Update or Other Action	PFOS and PFOA are suspected at this site. The current Zone 5 ROD being drafted by the AF will not cover these emerging contaminants. A base-wide approach to managing PFOS and PFOA is currently in development.	Holly Weiss-Racine
12/7/2016	Document, Report, or Work plan Review - other	ADEC reviewed and provided comments on the draft Preliminary Assessment for PFCs at the King Salmon Divert. All Fire Training Areas are included in the report.	Holly Weiss-Racine
5/15/2018	Document, Report, or Work plan Review - other	ADEC approves the 'Final 2017 Five-Year Review, King Salmon Divert, Naknek Recreation Camp I, Naknek Recreation Camp II, Alaska, November 2017' in a letter dated May 15, 2018. Land Use Controls have not been fully implemented at any groundwater zones at King Salmon Divert. Recommendations include: finalizing the decision document for Zone 7, determine the extent of drinking water wells at Lake Camp (number of wells, depth of wells, and groundwater gradient), and fully implement LUCs by updating public land records for non-USAF owned properties. The next five-year review will be completed in 2022.	Sammi Castle
4/29/2019	Document, Report, or Work plan Review - other	ADEC received the Draft Uniform Federal Policy - Quality Assurance Project Plan for Site Inspections of Aqueous Film-Forming Foam Areas, dated April 2019. The purpose of the SI for King Salmon Divert is to evaluate whether a release of AFFF-derived PFAS has occurred to groundwater, soil (shallow and subsurface), surface water, and sediment as a result of historical AFFF use at 11 of the KSD AFFF areas: Building 160, Former Building 152, Building 300, Spray Test Area, Building 617, Eskimo Creek, Red Fox Creek, the Fire Training Areas (FT001, FT002, FT004), and the Former Landfarm and Holding Ponds. ADEC submitted comments on the draft work plan in a letter to the Air Force dated May 17, 2019.	Sammi Castle
8/2/2019	Document, Report, or Work plan Review - other	ADEC approved the Final Uniform Federal Policy - Quality Assurance Project Plan for Site Inspections of Aqueous Film-Forming Foam Areas, King Salmon Divert, dated July 2019, in a letter to the Air Force on this date.	Sammi Castle
3/11/2021	Document, Report, or Work plan Review - other	ADEC approved the Final Fire Training Areas - (FT001, FT002, FT003, and FT004) Expanded Remedial Investigation Work Plan, dated February 2021, in a letter on this date. Goals of the study include delineating the vertical and lateral extent of contaminants, including PFOS and PFOA, in soil, groundwater, sediment and surface water at the four fire training areas, and identifying potential risks from contaminants to human and ecological receptors.	Sammi Castle
6/30/2022	Risk Assessment Workplan Approved	The ADEC approved the King Salmon Divert (Groundwater Zones 1, 2, and 5) and Naknek II Screening-Level Ecological Risk Assessment Work Plan, Final (dated June 2022). The work plan describes the approach to conduct a phased Screening-Level Ecological Risk Assessment across various sites within Naknek II and Groundwater Zones 1, 2, and 5 areas located in King Salmon, Alaska. The objectives of this work plan are to quantitatively and/or qualitatively evaluate baseline or existing exposure and risks to ecological receptors from chemicals released into the environment during site operations. The work plan aims to address a total of seventeen sites for contaminants such as metals, petroleum hydrocarbons, volatile organic compounds, semivolatile organic compounds, polychlorinated biphenyls, per- and polyfluoroalkyl substances, pesticides, dioxins and furans.	Ginna Quesada
6/30/2022	Risk Assessment Workplan Approved	The ADEC approved the King Salmon Divert (Groundwater Zones 1, 2, and 5) and Naknek II Screening-Level Ecological Risk Assessment Work Plan, Final (dated June 2022). The work plan describes the approach to conduct a phased Screening-Level Ecological Risk Assessment across various sites within Naknek II and Groundwater Zones 1, 2, and 5 areas located in King Salmon, Alaska. The objectives of this work plan are to quantitatively and/or qualitatively evaluate baseline or existing exposure and risks to ecological receptors from chemicals released into the environment during site operations. The work plan aims to address a total of seventeen sites for contaminants such as metals, petroleum hydrocarbons, volatile organic compounds, semivolatile organic compounds, polychlorinated biphenyls, per- and polyfluoroalkyl substances, pesticides, dioxins and furans.	Ginna Quesada
11/7/2022	Compliance Advisory Letter	ADEC issued compliance advisory letters to the USACE, USAF, and Jacobs to address violations of 18 AAC 75.325(i) and 18 AAC 75.370(b) by failing to obtain transport approval for investigation derived waste.	Ginna Quesada
5/18/2023	Site Visit	DEC conducted a site visit with the U.S. Air Force.	Ginna Quesada
2/22/2024	Document, Report, or Work plan Review - other	DEC reviewed the Remedial Investigation Report: Phase I AFFF Remedial Investigation (Groundwater Zones 1 and 2 Sites FFS, STA, CAC, CFS, WTP, and LHP) and Expanded Remedial Investigation (Groundwater Zone 5 Sites FT001/FT001P, FT002/FT002P, and FT004/FT004P) Draft, dated January 2024. The report describes the phase I remedial investigation efforts to delineate the extent of per and polyfluoroalkyl substances (PFAS) across nine sites in groundwater zones 1, 2, and 5 located in King Salmon, Alaska. PFAS exceedances of screening levels were encountered across all sites in groundwater, soil, sediment, and surface water. The report recommends a supplemental remedial investigation to further examine the risk and further characterize the extent of contamination for all nine sites.	Ginna Quesada
5/1/2024	Document, Report, or Work plan Review - other	DEC approved the Remedial Investigation Report: Phase I AFFF Remedial Investigation (Groundwater Zones 1 and 2 Sites FFS, STA, CAC, CFS, WTP, and LHP) and Expanded Remedial Investigation (Groundwater Zone 5 Sites FT001/FT001P, FT002/FT002P, and FT004/FT004P) Final, dated April 2024.	Ginna Quesada

Action Date

Action

Description

DEC Staff

6/15/1996

Update or Other Action

Treatability Study workplan for Fire Training Areas FT01 and FT04 (dated September 1995). Excavation and off site bioremediation of soil, instrinsic remediation of groundwater, and managed wetlands were recommended for FT01 and vicinity (RAPCON). Intrinsic remediation for soil and groundwater was recommended for FT04.

Louis Howard

11/15/1996

Update or Other Action

Aerial Photographic Analysis, King Salmon Airport Study Area. Prepared by EPA Region 10, Research and Development, Characterization, Research Division, TS-PIC-9710003S, dated November 1996.

Gretchen Pikul

3/15/1997

Update or Other Action

Feasibility Report (final revised) - dated March 1997. Preferred alternatives were identified for groundwater, wetlands, and soil in each 5 groundwater monitoring zones associated with the main base.

Gretchen Pikul

5/6/1997

Update or Other Action

Final Treatability Study Report for FT04 (draft dated January 1997, final dated May 1997) and Feasibility Study Screening Assessment (dated May 1997).

Gretchen Pikul

10/21/1997

Update or Other Action

RAPCON Excavation Activities and Summary of Findings, Fire Training Areas Numbers 1, 2, 3 and 4, King Salmon Airport (memorandum dated October 15, 1997).

Gretchen Pikul

10/21/1997

Update or Other Action

Technical Memorandum for Fire Training Areas 1 and 4, Summary of Findings and Recommendations May 1997 Groundwater Sampling Event (dated September 3, 1997).

Gretchen Pikul

11/28/2001

Update or Other Action

Remedial Process Optimization Scoping Visit Report - June 26-28, 2001 (no draft received; final received September 26, 2001 - many comments and issues to be resolved; comment resolution meeting during EPA Seattle meetings November 28, 2001).

Gretchen Pikul

11/29/2001

Meeting or Teleconference Held

Meeting with Air Force, ADEC, and EPA at EPA Seattle office - November 26-29, 2001.

Gretchen Pikul

1/28/2003

GIS Position Updated

Updated Quadrangle, Latitude, Longitude, Section, Township, and Range fields using TopoZone.com and site maps.

Former Staff

3/25/2004

Proposed Plan

Proposed Plan for Final Remedial Actions at Landfills and Fire Training Areas in Groundwater Zone 5; ADEC received electronic version via e-mail on November 12, 2003; general direction meeting on November 13; ADEC management briefing meeting on November 21; comment resolution meetings on November 24 and 25; draft final received December 12, 2003; PACAF and Air Staff comments received January 9, 2004; comment resolution meeting/teleconfernce with PACAF and Air Staff on January 22, 2004; comment resolution meeting with project managers on February 4, 2004; 2nd comment resolution teleconference / meeting with PACAF and Air Staff on March 11; ADEC received final Proposed Plan on March 25 and posted on ADEC webpage on March 30; Public comment period from March 27 to May 7, and public meeting on April 27.

Gretchen Pikul

7/20/2004

Update or Other Action

Implementation of Remedial Process Optimization (RPO) Recommendations Work Plan; draft dated and received in June 2004; ADEC comment letter dated June 28, 2004; Comment Response on July 9; comment resolution meeting on July 19; final received on July 20 (some errors are present – see Comment Response in work plan jacket for details).

Gretchen Pikul

10/7/2004

Update or Other Action

Record of Decision for Zone 5; preliminary meeting held on August 24, 2004; draft ROD received October 7 via e-mail.

Gretchen Pikul

11/15/2004

Meeting or Teleconference Held

Remedial Process Optimization (RPO) team met with Air Force, ADEC, and EPA at at contractor's office in San Antonio TX - November 8-12, 2004. The primary purpose of this meeting was to evaluate the current status of cleanup efforts at the King Salmon AS and draft the RPO report due in March 2005.

Jeff Norberg

6/16/2006

Update or Other Action

Implementation of Remedial Process Optimization (RPO) Recommendations Report; draft dated March 2005 received March 30, 2005; ADEC comment letter dated May 16, 2005; Air Force Comment Response and ADEC approval letter issued on May 20, 2005; final dated June 2006 received on June 16, 2006.

Jeff Norberg

1/31/2007

Update or Other Action

File number issued 2569.38.019.05.

Aggie Blandford

1/29/2008

Exposure Tracking Model Ranking

Initial ranking with ETM completed.

Jonathan Schick

10/21/2008

Site Visit

ADEC staff took part in a site visit to a number of pertinent sites at King Salmon Air Station over a 2 day visit. Sites, especially the pending Multi Site Inspection sites, were inspected for any visible evidence of contamination and potential sampling locations as the work plans are still being formulated. ADEC staff was accompanied to all of the sites by the Project managers from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, a discussion of the Multi-SIte inspection project, an update on the status of the Groundwater Zone 5 Records of Decision, and a brief discussion concerning the TCE treatibility Study in Groundwater Zone 1. The next RAB meeting has been tentatively scheduled for April 21, 2009.

Jonathan Schick

4/21/2009

Update or Other Action

ADEC staff conducted a site visit to pertinent sites at King Salmon Air Station over a 2 day visit. Sites were inspected for any visible evidence of contamination and to become more familiar with the layout and topography of the area. ADEC staff was accompanied to all of the sites by the Project manager from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, a discussion of the Multi-Site inspection project which is entering Phase II this summer, an update on the status of the Groundwater Zone 5 Records of Decision, and a brief discussion concerning the TCE treatibility Study in Groundwater Zone 1. The next RAB meeting has been tentatively scheduled for October, 2009.

Jonathan Schick

7/28/2010

Update or Other Action

Contaminated Sites Staff recieved a Draft version of the Report for Remedial Action Projects for LF006, FT004, OT010, Lake Camp and the Biocells.

Jonathan Schick

8/26/2010

Update or Other Action

Contaminated Sites Staff recieved a draft version of the work plan for additional remedial action at several sites including FT004, LF006, DA037 and SA039 where some batteries and lead impacted soil remain as well as additional POL contamination and drums are slated to be removed and also serveral stockpiles of pesticide contaminated soil will be containerized and shipped off-site. The plan's review is on a hold due to contracting issues with the Air Force.

Jonathan Schick

9/22/2010

Update or Other Action

Contaminated Sites Staff reviewed the work plans for battery, drum, and pesticide soil removal for various sites at King Salmon including FT004, LF006, DA037, and SA039. Comments were submitted to the Air Force Project Manager and they were regarding the need for additional detail about storage and shipment of impacted soils and also some questions about the figure depicting the pesticide impacted soil stockpiles that are slated to be shipped off-site for disposal. Additionally some text errors were corrected.

Jonathan Schick

9/24/2010

Update or Other Action

Contaminated Sites Staff recieved responses to our comments and concur with the changes made to the Draft version of the Battery, Drum and stockpile removal action work plan. Staff sent a letter to the USAF project manager approving the plan for implementation in the field.

Jonathan Schick

9/29/2010

Update or Other Action

Contaminated Sites Staff submitted a letter containing comments on the Draft Report for Remedial Action Projects for LF006, FT004, OT010, Lake Camp and the Biocells. The comments were regarding the use of propper Personal Protective Equipment at the PCB impacted sites and the inclusion of the Laboratory Data Review Checklist with the Final Report.

Jonathan Schick

10/5/2010

Update or Other Action

ADEC contaminated sites staff recieved a draft copy of a work plan for continuted excavation of petroleum impacted soil at the Fire Training Ground, FT004. The plan detailed the Air Force's plan to remove an additional 500 cubic yards of impacted soil this season.

Jonathan Schick

10/11/2010

Update or Other Action

ADEC Contaminated sites staff submitted a letter to the US Air Force with comments on the recently submitted excavation work plan for Fire Training Ground FT004. The plan detailed the previous confrimation sample results and depicted them on a figure. The plan proposed to removal an additional 500 cubic yards of impacted soils from the site. ADEC is concerned that an additional 500 cubic yards may not be adequate to achieve the remedial action objectives proposed for the site. The plan also proposed an elevated PID screening level for segregating soils on-site. ADEC staff stated in the letter that adjusting the PID action level for this site would not be appropriate.

Jonathan Schick

10/20/2010

Update or Other Action

ADEC staff conducted a site visit to pertinent sites at King Salmon Air Station over a 2 day visit. Sites were inspected for any visible evidence of contamination and to observe some of the work that is being conducted to remove POL impacted soils and PCB impacted soils at OT010. ADEC staff was accompanied to all of the sites by the Project manager from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, remedial action cleanup programs, and management of the IDW and soil in the biocells set up to add oxygen to the soil matrix to aid the degradation of the petroleum hydrocarbons. The next RAB meeting is scheduled for April 2011.

Jonathan Schick

1/5/2011

Update or Other Action

Contaminated Sites Staff recieved a copy of the Final Work Plans for Remedial Action Projects that were conducted in the summer and fall of 2010. The Remedial Actions included excavation and removal of PCB impacted soils at OT010, POL soils at FT004, Pesticides, POL and Lead impacted soils at the Circle Landfill, and on-going work at the Bioremediation Cells.

Jonathan Schick

4/8/2011

Update or Other Action

Contaminated Sites Staff recieved the Final Version of the 2009 Remedial Action Projects Report for LF006, FT004, OT010, Lake Camp, and the Biocells. The report was dated March 2011 and the comments submitted in September 2010 were incorporated into the Final Report.

Jonathan Schick

5/10/2011

Update or Other Action

Contaminated Sites Staff submitted an approval letter for the final version of the Report on the 2009 Remedial Action Projects for LF006, FT004, OT010, Lake Camp and the Biocells. ALl of the comments submitted were addressed and incorporated into the Final Report.

Jonathan Schick

1/11/2012

Document, Report, or Work plan Review - other

Contamianted Sites Staff recieved the Draft 2010 Removal Action Projects Report detailing the work completed at OT010, FT004, LF006, Lake Camp, and the Biocells. The report is dated January 2012.

Jonathan Schick

2/8/2012

Document, Report, or Work plan Review - other

Contaminated Sites Staff submitted a letter to the US Air Force Remedial Project Manager with commments on the Draft Remedial Action Projects Report that detailed the cleanup efforts at FT004, OT010, LF006, Lake Camp, and the Biocells. The comments were focused on clarification that many of the sites under this contract specifically in Groundwater Zone 5 were being cleaned up to levels proposed in a Draft Record of Decision that was never agreed to by ADEC.

Jonathan Schick

2/8/2012

Document, Report, or Work plan Review - other

Contaminated Sites Staff submitted a letter to the US Air Force Remedial Project Manager with commments on the Draft Remedial Action Projects Report that detailed the cleanup efforts at FT004, OT010, LF006, Lake Camp, and the Biocells. The comments were focused on clarification that many of the sites under this contract specifically in Groundwater ZOne 5 were being cleaned up to levels proposed in a Draft Record of Decision that was neve agreed to by ADEC.

Jonathan Schick

8/28/2014

Document, Report, or Work plan Review - other

Submit comments to US Air Force on the Draft "Work Plans for 2014 Remedial Action Construction at King Salmon Divert". Comments were minor. Work is scheduled for 2014 and should complete the remedial action for this site.

Guy Warren

9/2/2014

CERCLA Remedial Design/Remedial Action Plan Approved

Received Final Work Plan for 2014 Remedial Action Construction. Approval letter submitted 8/28/14 based on electronic submittal.

Guy Warren

6/27/2016

Document, Report, or Work plan Review - other

Approved the Final 2014 RA – Construction report. PFCs remain at this site above ADEC proposed cleanup levels. Down gradient wells FT04-MW3, FR04-MW4, and FT04-MW6 should be added to the groundwater monitoring program for PFCs.

Holly Weiss-Racine

6/29/2016

Document, Report, or Work plan Review - other

Approved the Final 2014 RA - LF006 and FT004 Well Install & Sampling report. In 2014, 3 new monitoring wells were installed (MW5R (a replacement for MW5), MW07 and MW08. Groundwater at MW5R and MW07 exceeded cleanup levels for DRO, GRO, and TCE. Groundwater at MW07 also exceeded the cleanup levels for benzene and toluene. Groundwater at all three monitoring wells exceeded the proposed cleanup levels for PFCs. All three new wells, as well as, groundwater monitoring wells MW1 and MW2 should be added to the groundwater monitoring program and sampled for DRO, GRO, VOCs, PFC, and EDB.

Holly Weiss-Racine

11/8/2016

Update or Other Action

PFOS and PFOA are suspected at this site. The current Zone 5 ROD being drafted by the AF will not cover these emerging contaminants. A base-wide approach to managing PFOS and PFOA is currently in development.

Holly Weiss-Racine

12/7/2016

Document, Report, or Work plan Review - other

ADEC reviewed and provided comments on the draft Preliminary Assessment for PFCs at the King Salmon Divert. All Fire Training Areas are included in the report.

Holly Weiss-Racine

5/15/2018

Document, Report, or Work plan Review - other

ADEC approves the 'Final 2017 Five-Year Review, King Salmon Divert, Naknek Recreation Camp I, Naknek Recreation Camp II, Alaska, November 2017' in a letter dated May 15, 2018. Land Use Controls have not been fully implemented at any groundwater zones at King Salmon Divert. Recommendations include: finalizing the decision document for Zone 7, determine the extent of drinking water wells at Lake Camp (number of wells, depth of wells, and groundwater gradient), and fully implement LUCs by updating public land records for non-USAF owned properties. The next five-year review will be completed in 2022.

Sammi Castle

4/29/2019

Document, Report, or Work plan Review - other

ADEC received the Draft Uniform Federal Policy - Quality Assurance Project Plan for Site Inspections of Aqueous Film-Forming Foam Areas, dated April 2019. The purpose of the SI for King Salmon Divert is to evaluate whether a release of AFFF-derived PFAS has occurred to groundwater, soil (shallow and subsurface), surface water, and sediment as a result of historical AFFF use at 11 of the KSD AFFF areas: Building 160, Former Building 152, Building 300, Spray Test Area, Building 617, Eskimo Creek, Red Fox Creek, the Fire Training Areas (FT001, FT002, FT004), and the Former Landfarm and Holding Ponds. ADEC submitted comments on the draft work plan in a letter to the Air Force dated May 17, 2019.

Sammi Castle

8/2/2019

Document, Report, or Work plan Review - other

ADEC approved the Final Uniform Federal Policy - Quality Assurance Project Plan for Site Inspections of Aqueous Film-Forming Foam Areas, King Salmon Divert, dated July 2019, in a letter to the Air Force on this date.

Sammi Castle

3/11/2021

Document, Report, or Work plan Review - other

ADEC approved the Final Fire Training Areas - (FT001, FT002, FT003, and FT004) Expanded Remedial Investigation Work Plan, dated February 2021, in a letter on this date. Goals of the study include delineating the vertical and lateral extent of contaminants, including PFOS and PFOA, in soil, groundwater, sediment and surface water at the four fire training areas, and identifying potential risks from contaminants to human and ecological receptors.

Sammi Castle

6/30/2022

Risk Assessment Workplan Approved

The ADEC approved the King Salmon Divert (Groundwater Zones 1, 2, and 5) and Naknek II Screening-Level Ecological Risk Assessment Work Plan, Final (dated June 2022). The work plan describes the approach to conduct a phased Screening-Level Ecological Risk Assessment across various sites within Naknek II and Groundwater Zones 1, 2, and 5 areas located in King Salmon, Alaska. The objectives of this work plan are to quantitatively and/or qualitatively evaluate baseline or existing exposure and risks to ecological receptors from chemicals released into the environment during site operations. The work plan aims to address a total of seventeen sites for contaminants such as metals, petroleum hydrocarbons, volatile organic compounds, semivolatile organic compounds, polychlorinated biphenyls, per- and polyfluoroalkyl substances, pesticides, dioxins and furans.

Ginna Quesada

6/30/2022

Risk Assessment Workplan Approved

Ginna Quesada

11/7/2022

Compliance Advisory Letter

ADEC issued compliance advisory letters to the USACE, USAF, and Jacobs to address violations of 18 AAC 75.325(i) and 18 AAC 75.370(b) by failing to obtain transport approval for investigation derived waste.

Ginna Quesada

5/18/2023

Site Visit

DEC conducted a site visit with the U.S. Air Force.

Ginna Quesada

2/22/2024

Document, Report, or Work plan Review - other

DEC reviewed the Remedial Investigation Report: Phase I AFFF Remedial Investigation (Groundwater Zones 1 and 2 Sites FFS, STA, CAC, CFS, WTP, and LHP) and Expanded Remedial Investigation (Groundwater Zone 5 Sites FT001/FT001P, FT002/FT002P, and FT004/FT004P) Draft, dated January 2024. The report describes the phase I remedial investigation efforts to delineate the extent of per and polyfluoroalkyl substances (PFAS) across nine sites in groundwater zones 1, 2, and 5 located in King Salmon, Alaska. PFAS exceedances of screening levels were encountered across all sites in groundwater, soil, sediment, and surface water. The report recommends a supplemental remedial investigation to further examine the risk and further characterize the extent of contamination for all nine sites.

Ginna Quesada

5/1/2024

Document, Report, or Work plan Review - other

DEC approved the Remedial Investigation Report: Phase I AFFF Remedial Investigation (Groundwater Zones 1 and 2 Sites FFS, STA, CAC, CFS, WTP, and LHP) and Expanded Remedial Investigation (Groundwater Zone 5 Sites FT001/FT001P, FT002/FT002P, and FT004/FT004P) Final, dated April 2024.

Ginna Quesada

Contaminant Information

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Level Description

Media

Comments

Control Type

Type

Details

Requirements

Description

Details

2016 Remedial Action/Long Term Management Report

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Alaska Department of Environmental Conservation

Site Report: King Salmon AS GWZ 5 FT004 Fire Training Area 4

Site Chronology

IC / Closure Details

Documents

Associated Sites

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Action Information

Contaminant Information

Control Type

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2016 Remedial Action/Long Term Management Report

Missing Location Data

State of Alaska Department of Environmental Conservation