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Site Report: King Salmon AS GW Zone 5 OT031

Site Name: King Salmon AS GW Zone 5 OT031
Address: Fire Training Areas/LFs, King Salmon, AK 99613
File Number: 2569.38.019
Hazard ID: 2632
Status: Active
Staff: Ginna Quesada, 9074515960 ginna.quesada@alaska.gov
Latitude: 58.672472
Longitude: -156.621083
Horizontal Datum:

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.

Problems/Comments

OT031 Groundwater Zone 5 contains several former fire training areas and landfills. Some of the petroleum and solvent contamination within the soil and groundwater at the fire training areas has been remediated, one area continues to be remediated by a treatment system, and some are still in the investigation stages. The landfills have sporadic detection of petroleum and solvent contamination within the groundwater, and petroleum contaminated soil exceeding cleanup levels; these areas have continued groundwater monitoring and future soil remediation planned. The groundwater zones were established in areas with similar hydrological, geological, geographical, and contamination characteristics, and contain numerous Installation Restoration Program (IRP) sites within each zone. The IRP sites within Zone 5 include: FT001 Fire Training Area #1 and RAPCON; FT002 Fire Training Area #2; FT003 Fire Training Area #3; FT004 Fire Training Area #4; LF006 Landfill #2 and Circle Landfill; and LF007 Landfill #3. A Proposed Plan and Record of Decision is scheduled for 2003. 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. Latitude and longitude coordinates represent the approximate GW Zone polygon centroid.

Action Information

Action Date Action Description DEC Staff
9/15/1985 Preliminary Assessment Approved Phase I - Records Search and Site Prioritization. Former Staff
6/15/1986 Update or Other Action Phase II - Task I Pre-Survey Report, Shemya Air Force Base and King Salmon Air Force Base. Former Staff
3/15/1992 Update or Other Action Report of Groundwater Monitoring Well Sampling and Analysis (dated July 31, 1992). Louis Howard
7/15/1992 Update or Other Action Remedial Investigation / Feasibility Study at Eleven Sites, final report (3 volumes, dated September 1993). Louis Howard
9/15/1992 Update or Other Action Comprehensive Site Investigation with September and October groundwater sampling programs. Louis Howard
10/15/1992 Update or Other Action Report of Groundwater Monitoring Well Sampling and Analysis (dated July 1993). Louis Howard
10/15/1992 Update or Other Action Groundwater Monitoring Performed October 1992 (dated April 7, 1993). Louis Howard
12/15/1993 Update or Other Action King Salmon Air Station, Analytical Results: Private Water Wells (dated March 1, 1994). Louis Howard
3/31/1994 Site Ranked Using the AHRM Initial ranking. Louis Howard
4/26/1994 Update or Other Action Final Environmental Assessment Drawdown at King Salmon Airport (dated and received in April 1994). Gretchen Pikul
5/2/1994 Site Added to Database Gasoline range organics and solvents. Louis Howard
5/15/1994 Update or Other Action King Salmon Air Station, Analytical Results: Private Water Wells verification sampling program. Louis Howard
6/30/1994 Update or Other Action Basewide Groundwater Sampling Program. Louis Howard
7/15/1994 Update or Other Action Trip Report, Groundwater Monitoring Event, King Salmon Air Station, September - October (dated June 14, 1995). This program was designed to supplement previous RI/FS efforts and to complete the RI/FS process on selected sites. In June and July 1994, a groundwater sampling program was initiated in which groundwater sampling of a representative network of base-wide monitoring wells took place. Louis Howard
6/15/1995 Update or Other Action Human Health and Ecological Risk Assessment (dated June 1995). FTA #1 and Lower and Upper Naknek Seeps were the only areas which posed a threat to human health. The Ecological Risk Assessment results indicated that chemicals in soil and water posed threats to Eskimo Creek, Refueler Shop, WACs, North/South Bluffs, Upper/Lower Naknek Seeps, and FTA #1. Louis Howard
7/15/1995 Interim Removal Action Approved Final Source Investigation and Removal Action at Fire Training Area Number 1 (dated April 1996). Excavation of 2,025 cubic yards of contaminated soil above the groundwater table and backfilled with clean soil. Impacted soil were still present below the groundwater table. Excavated contaminated soil was transported to bioremediation cells for treatment. Louis Howard
8/6/1995 Notice of Violation January 14, 1994 - Notice of Violation letter to Air Force from ADEC dated January 14, 1994 regarding the June 1993 EPA/ADEC inspection (letter does not appear to be in the ADEC files). The Air Force response letter is dated February 8, 1994 and received by March 1, 1994. The Air Force response letter dated November 1, 1994 submitting information on the outstanding issues from the June 1990 and June 1993 Compliance Evaluation Inspections. The Air Force response letter dated December 12, 1994 submitting information on the outstanding issues from the June 1990 and June 1993 Compliance Evaluation Inspections. ADEC letter dated May 8, 1995 closed the NOV issued on January 14, 1994. ADEC and USAF letters dated October and November 1995 address closure on POL related Compliance Advisories issued by ADEC. Louis Howard
8/29/1995 Site Characterization Report Approved Report, Installation Restoration Program, Remedial Investigation / Feasibility Study at 14 sites, Stage 3 Remedial Investigation studies conducted between October 1993 and December 1994 (final dated August 1995). Based on the results of the RI/FS and remedial actions completed prior to publication of the final RI/FS - the 2 Dry Wells, WACs, WAA#2, Road Oiling, and Landfill Number 2 sites did not require further investigation. Louis Howard
9/7/1995 Update or Other Action (Old R:Base Action Code = RI - Remedial Investigation). RI action added by Shannon and Wilson on 3/14/1997, based on Relative Risk Evaluation Worksheet dated 9/7/95. Groundwater pathway to Red Fox Creek. Ecological pathway to small mammals exists thru contaminated surface soils. Receptors: contaminants are reaching receptors at surface soils and Red fox Creek to the Naknek River. S&W-Miner
5/15/1996 Update or Other Action Intrinsic Remediation Treatability Study for Site FT01, King Salmon Airport (draft dated May 1996). Prepared for AFCEE and Elmendorf Air Force Base. Louis Howard
6/15/1996 Update or Other Action Final Installation-wide Environmental Baseline Survey. Louis Howard
6/15/1996 Update or Other Action Final Human Food Chain, Aquatic Biota, and Wetlands Evaluation workplan. Louis Howard
9/15/1996 Update or Other Action Treatability Study workplan for Fire Training Areas FT01 and FT04 (final dated September 1996). 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
10/15/1996 Update or Other Action Final Field Report for Spring 1996, Final Human Food Chain, Aquatic Biota, and Wetlands Evaluation report. 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
12/6/1996 Update or Other Action Community Relations Plan for King Salmon Airport and Naknek Recreation Camps 1 and 2 (draft dated December 1996, final dated May 1997). Gretchen Pikul
1/15/1997 Update or Other Action Preliminary Report, Human Food Chain, Aquatic Biota, and Wetlands Evaluation. 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
4/15/1997 Update or Other Action King Salmon Residential Well Sampling Report November 1996 Sampling Event (dated March 1997, received April 1997). Gretchen Pikul
5/6/1997 Update or Other Action Final Treatability Study Report for FT01 and Vicinity (draft dated January 1997, final dated April 1997) and Feasibility Study Screening Assessment (dated May 1997). Gretchen Pikul
8/5/1997 Update or Other Action Management Action Plan report (draft dated December 1996, received March 1997, final dated June 1997, received August 1997). Gretchen Pikul
8/12/1997 Update or Other Action King Salmon Residential Well Sampling Report May 1997 Sampling Event (dated July 1997, received August 1997). Gretchen Pikul
8/19/1997 Update or Other Action Technical Report Modeling to Support Reuse of Diesel Contaminated Soil at the RAPCON Site (dated August 19, 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
10/21/1997 Interim Removal Action Approved 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
3/25/1998 Update or Other Action King Salmon Residential Well Sampling Report November 1997 Sampling Event (dated and received March 1998). Gretchen Pikul
4/27/1998 Update or Other Action King Salmon, Naknek and South Naknek Native Villages Site Assessment Report (draft dated March 1998, received April 1998, no final received). Gretchen Pikul
7/15/1998 Update or Other Action ADEC Factsheet: Overview Environmental Cleanup at a Military Site in King Salmon, Alaska (dated July 1998). Gretchen Pikul
9/4/1998 Update or Other Action King Salmon Residential Well Sampling, August 1997 Sampling Event, Analytical Results and Data Evaluation (dated March 1998, received September 1998). Gretchen Pikul
10/15/1998 Update or Other Action Environmental Assessment SuperDARN Radar Installation, King Salmon Airport (draft dated October 1998, no final received). Gretchen Pikul
12/2/1998 Risk Assessment Report Approved Human Food Chain, Aquatic Biota, and Wetlands Evaluations, Technical Report (Volume I - Report Text and Tables, Volume II - Maps, Figures and Photographs, and Volume III - Analytical Laboratory Reports) (draft dated July 1997, final dated November 1998). Gretchen Pikul
3/30/1999 Meeting or Teleconference Held Seattle meeting with trustees on fish study previous results and follow-on workplan. Gretchen Pikul
3/16/2000 Update or Other Action King Salmon Airport Restoration Advisory Board Orientation Manual (final dated April 1999 and received March 16, 2000). Gretchen Pikul
8/21/2000 Update or Other Action General Plan, 611th Air Support Group, Remote Alaska Sites, Volumes 1, 2, and 3 CD version only (dated March 2000 and received August 21). Portion of Bluffs IC established. Gretchen Pikul
7/17/2001 Update or Other Action Work Plan - Remediation Systems - 2001 Operation and Monitoring (draft dated July 2, 2001 and received on July 12, 2001; ADEC comment letter dated July 17, 2001; ADEC approval letter dated August 9, 2001; final not received). Gretchen Pikul
9/26/2001 Update or Other Action Restoration Advisory Board Pocket Guide and Community Outreach Handbook (ADEC comment letter dated May 30, 2001; final dated September 2001). Gretchen Pikul
10/23/2001 Leaking Underground Storage Tank Corrective Action Underway Underground Storage Tank and Pipeline Monitoring Report (draft dated February 1999; ADEC comment letter dated May 14, 1999; review draft dated March 30, 2000; comment resolution meeting on April 11, 2000; final dated April 11, 2001 and received October 23, 2001). 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
12/13/2001 Update or Other Action Work Plans for 2001 Comprehensive Environmental Monitoring Projects at: North and South Bluffs (Zone 3); Naknek River Storage Area (Zone 4); Rapids Camp (Zone 6); Biovent and AS/SVE Monitoring at 6 Remediation Sites (4 in Zone 2, 1 at RAPCON - FT01, and 1 at MOGAS - SS19); and Soil Biocell Number 7 Cleanup Verification - (drafts dated and received in July 2001; ADEC comment letters dated July 2001; ADEC approval letters dated July and August 2001; final dated November 28, 2001 and received on December 13, 2001). Gretchen Pikul
1/8/2002 Update or Other Action Management Action Plan (draft dated January 2001; ADEC comment letter dated April 3, 2001; response to comments received June 11, 2001; comment resolution meeting on August 29, 2001; final report dated October 2001 and received on January 8, 2002; not all comments documented within the response to comments as being addressed are addressed within the final report; discussions with the Air Force continue on this issue). Gretchen Pikul
4/15/2002 Update or Other Action Remediation Systems, 2001 Operation, Monitoring, and Maintenance, Biovent and AS/SVE Systems at Six Remediation Sites - draft dated March 12, 2002 and received March 21, 2002; ADEC comment letter dated April 15, 2002. Gretchen Pikul
4/15/2002 Update or Other Action Remediation System Operation, Monitoring, and Maintenance Manual at Six Remediation Sites - draft dated February 22, 2002 and received March 21, 2002; ADEC comment letter dated April 15, 2002. Gretchen Pikul
7/17/2002 Meeting or Teleconference Held ADEC participated in the Phase II Remedial Process Optimization (RPO) meetings in King Salmon. 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
3/11/2003 Update or Other Action Technical Report – Remediation Systems 2001 Operation, Monitoring and Maintenance Biovent and AS/SVE Systems at Six Remediation Sites final dated December 20, 2002 and received on March 11, 2003. Also, Remediation System Operation, Monitoring, and Maintenance Manual at Six Remediation Sites; final dated December 23, 2002 and received on March 11, 2003. Gretchen Pikul
5/19/2003 Update or Other Action Work Plans for 2002 Comprehensive Environmental Monitoring Projects at: North and South Bluffs (Groundwater Zone - OT029), Naknek River Storage Area (Groundwater Zone 4 - OT030), Rapids Camp (Groundwater Zone - OT032), Main Base Area (Groundwater Zone - OT027), and Biovent and AS/SVE Monitoring at 6 Remediation Sites (8 draft work plans, ADEC comment letters, Air Force Comment Response, and comment resolution meetings in August and September 2002, Bluffs work plan dated March 2002; finals dated April 30, 2003 and received on May 19, 2003). Gretchen Pikul
7/3/2003 Update or Other Action 2002 King Salmon Air Station Monitoring Point Inventory CD (dated June 25 and received on July 3, 2003). Gretchen Pikul
7/28/2003 Update or Other Action Field Sampling Plan Addendum 2003 Environmental Restoration Program at Main Base Area (Groundwater Zone 1 - OT027), North and South Bluffs (Groundwater Zone 3 - OT029), Naknek River Storage Area (Groundwater Zone 4 - OT030), Rapids Camp Landfill (Groundwater Zone 6 - OT032), Red Fox Creek (Groundwater Zone 5 - OT031), and Bioventing Operations at Six Remediation Sites (draft dated and received in July 2003; ADEC comment letter dated July 28, 2003; no final received). Gretchen Pikul
8/8/2003 Update or Other Action Quality Assurance Project Plan for Sites: Main Base Area (Groundwater Zone 1 – OT027), North and South Bluffs (Groundwater Zone 3 – OT029), Naknek River Storage Area (Groundwater Zone 4 – OT030), Rapids Camp Landfill (Groundwater Zone 6 – OT032), Red Fox Creek (Groundwater Zone 5 – OT031), and Bioventing Operations at Six Remediation Sites (draft dated July 30 and received August 1, 2003; ADEC conditional approval letter dated Ausut 8, 2003; no final received). Gretchen Pikul
10/1/2003 Update or Other Action Technical Report Remediation Systems 2002 Operation, Monitoring, and Maintenance Bioventing Systems at Six Remediation Sites (draft dated and received in August 2003; ADEC comment letter dated September 11, 2003; final dated and received October 1, 2003). Gretchen Pikul
10/28/2003 Meeting or Teleconference Held ADEC participated in a general direction meeting for preparation of Zone 5 ROD. Gretchen Pikul
11/13/2003 Update or Other Action Monthly Status Reports for Bioventing Systems - August through November 2003 (dated November 13, 2003). Gretchen Pikul
1/14/2004 Meeting or Teleconference Held ADEC participated in a meeting with new Air Force project manager (Keith Barnack) on AOCs; programming for AOC PA/SI is slated for 2005. These AOCs were compiled from an extensive review of the Aerial Photographic Analysis (dated November 1996) prepared by EPA Region 10. Gretchen Pikul
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
4/14/2004 Update or Other Action Rehabilitation and Realignment of Lake Camp Road plan received on February 11, 2004; options include realignment through IRP sites in Zone 5; 2nd version dated April 8, 2004 and received on April 12, 2004; ADEC comment letter dated April 14, 2004. Gretchen Pikul
6/8/2004 Update or Other Action Fact Sheet for King Salmon Air Station Environmental Restoration Project; draft fact sheet received and ADEC comments sent on April 16; Air Force Comment Response received on May 25; final dated and received in June 2004. 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
7/22/2004 Update or Other Action Summer 2004 Environmental Newsletter received on July 22, 2004. Gretchen Pikul
8/10/2004 Update or Other Action 2004 Work Plan and Addendum: 2004 Field Sampling Plan Addendum; draft dated July 30 and received on August 3, 2004; ADEC comment letter dated August 10, 2004; AND 2004 Quality Assurance Project Plan; draft dated July 28, 2004 and received on August 3; ADEC approval letter dated August 9, 2004. Gretchen Pikul
9/13/2004 Update or Other Action King Salmon RPO Field Activities Update -Technical Memorandum, dated and received on September 13, 2004 via e-mail from Manish Joshi (Earth Tech). This memo presents a summary of the field activities completed in July/August 2004, and outlines the upcoming October 2004 field activities. 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
8/25/2005 Update or Other Action Technical Report Remediation Systems 2003 Operation, Monitoring, and Maintenance Bioventing Systems at Six Remediation Sites; final draft dated and received in February 2005; ADEC comment letter dated April 25; Response to Comments June 16; ADEC approval letter July 12; final dated August 5, 2005 received August 25. Jeff Norberg
9/1/2005 Update or Other Action Work Plan Addendum - Remediation Systems 2005 Operation, Monitoring, and Maintenance at Two Remediation Sites; draft dated July 21, 2005 received July 28; ADEC comment letter September 1. Jeff Norberg
10/25/2005 Update or Other Action Quality Assurance Project Plan; draft dated August 31 and received on September 1, 2005; ADEC comment letter dated September 6; response to comment resolution meeting held September 7; ADEC approval letter dated October 25, 2005. Jeff Norberg
10/25/2005 Update or Other Action Field Sampling Plan Addendum - 2005 Environmental Restoration Program; draft dated August 15, 2005 received August 18; ADEC comment letter September 1; comment resolution meeting held September 7; ADEC approval letter issued October 25. 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
1/26/2007 Update or Other Action File number issued 2569.38.019. Melissa Burger
6/15/2007 Update or Other Action Technical Report - 2006 Long-Term Monitoring RAPCON and Red Fox Creek Monitoring, King Salmon Air Station, draft dated June 15, 2007 Jeff Norberg
1/29/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed. Jonathan Schick
4/15/2008 Site Visit ADEC staff conducted a site visit to a large number of pertinent sites at King Salmon Air Station over a 3 day visit. Sites were inspected for any visible evidence of contamination and potential sampling locations. ADEC staff was accompanied to all of the sites by the Project managers from the USAF and thier contractors. A RAB meeting was held during the site visit. Jonathan Schick
4/15/2008 Update or Other Action ADEC staff participated in a Restoration Advisory Board meeting at the King Salmon Air Station. Community members are encouraged to attend and view a presentation of the most recent sampling program where data is available. Main topics discussed were the TCE plume that is in Groundwater Zone 1 where a treatibility study is being conducted to see the possible influence of adding an enhanced in-situ bioremediation product that is engineered to break down chlorinated solvents. The other main topic discussed was the results from the basewide monitoring event at all of the Groundwater Zones from 2007. Jonathan Schick
10/14/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 73608 name: auto-generated pm edit King Salmon AS OT031 GW Zone 5 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
6/15/2009 Update or Other Action Initial ranking corrected due to ETM error in surface water pathway. Mitzi Read
10/26/2009 Site Visit ADEC staff traveled to King Salmon with the new RPM for the King Salmon Air Station to tour the sites and look at the excavations that were completed during the 2009 field season. Several sites were inspected and overall the sites appeared to be secured with orange snow fencing and visqueen covering the stockpiles to prevent ponding and migration of contaminants. While in King Salmon staff attended and participated in a Restoration Advisory Board Meeting to meet with the public of King Salmon and discuss the results from the latest round of base-wide sampling and to discuss the progress of the excavations that were conducted during the summer. Jonathan Schick
7/28/2010 Update or Other Action ADEC staff recieved the draft versions of the 2009 Long-Term Monitoring Report for the Comprehensive Environmental Monitoring Program for basewide groundwater monitoring. The sample collection and analysis from groundwater, surfacewater and sediment samples from Groundwater Zones 1 through 5. Jonathan Schick
9/8/2010 Update or Other Action ADEC staff submitted comments to the USAF summarizing concerns and edits on the 2009 Comprehensive Environmental Monitoring Report. The report detailed sampling groundwater, surfacewater and sediment at the 5 main groundwater zones at King Salmon Air Station. ADEC's main concerns were regarding the high DRO levels in Groundwater Zone 1 which showed a substantial increase in concentration since the 2008 sampling event, and the differentiation between Remedial Action Objectives as called out in the Records of Decision for these sites and the established ADEC cleanup levels in 18 AAC 75. 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 the Final Version of the Work Plans for Comprehensive Environemtnal Monitoring across all of the groundwater zones at King Salmon Air Station including RAPCON/Red Fox Creek. Surface water and sediment sampling was scheduled to be conducted in several of the areas of concern as well as the analysis of groundwater samples. The Work Plan is dated August 2010. Jonathan Schick
2/22/2011 Update or Other Action Contaminated Sites Staff recieved a Final Version of the 2009 COmprehensive ENvironmental Monitoring Report covering groundwater and surfacewater sampling from Zones 1 through 5 at King Salmon. Comments on the Draft version were addressed and incorporated in the Final Version. Jonathan Schick
3/31/2011 Document, Report, or Work plan Review - other Contaminated Sites Staff recieved the Draft version of the 2010 Comprehensive Environmental Monitoring Report for groundwater and surface water sampling at all of the zones at the King Salmon Air Station. The report was dated March 2011. Jonathan Schick
3/31/2011 Document, Report, or Work plan Review - other Contaminated Sites Staff recieved the Draft Report for Comprehensive Environemental Monitoring for all of the groundwater zone sites across King Salmon. The report details the collection and analysis of groundwater and surface water samples all over the King Salmon Airport footprint as related to numerous IRP sites. Jonathan Schick
4/14/2011 Update or Other Action Contaminated Sites Staff recieved a Draft Work Plan for Well Decommissioning and Repair at all of the Groundwater Zones at King Salmon. Jonathan Schick
5/9/2011 Update or Other Action Contaminated Sites Staff submitted a comment letter to the USAF regarding the Draft Work Plan for Monitoring Well Decommissioning and Repair at all of the Groundwater Zones in King Salmon. Our main concerns were regarding improving the protectiveness of the decontamination of the equipment between wells to prevent cross contamination. Also regarding the treatment and disposal of any investigation derived waste water including the water generated during the decontamination of equipment. Jonathan Schick
6/6/2011 Update or Other Action Contaminated Sites Staff submitted comments to the US Air Force Remedial Project Manager regarding the 2011 Work plans for Comprehensive Environmental Monitoring Projects for Groundwater Zones 1-4 and RAPCON and Red Fox Creek. Our concerns were regarding several drums that have been stored within the bioremediation cells and also the need for an Explanation of Significant Differences for the South Bluffs Treatment System. Jonathan Schick
6/23/2011 Update or Other Action Contaminated Sites Staff recieved the Final Version of the Work Plan for Monitoring Well Decommissioning and Repair for all sites across King Salmon Air Station. The Comments from the Draft Version of the Plan were addressed in the response to comments and in the Final Version of the document. Jonathan Schick
6/23/2011 Update or Other Action Contaminated Sites Staff recieved the Final Version of the Work Plan for Monitoring Well Decommissioning and Repair for all sites across King Salmon Air Station. The Comments from the Draft Version of the Plan were addressed in the response to comments and in the Final Version of the document. Jonathan Schick
8/26/2011 Document, Report, or Work plan Review - other Contaminated Sites Staff recieved a FInal version of the Monitoring Well Decommissioning and Repair Report for King Salmon. The report detailed the monitoring wells throughout the King Salmon area that were either decommissioned and removed, or repaired for future work. Jonathan Schick
11/3/2011 Document, Report, or Work plan Review - other Contaminated Sites Staff submitted a comment letter to the Air Force's Remedial Project Manager with comments on the Draft 2010 Comprehensive Environmental Monitoring Projects. The comments were in regards to the need to complete Five-Year Reviews for several of the Groundwater Zones thus requiring a large scale review of the data from all of these sites from the past 5 years and beyond. Other comments were regarding the report's presentation of some histroic data and the concern about the exceedance of iron in the surface water at the South Bluffs Treatment facility. Jonathan Schick
11/3/2011 Document, Report, or Work plan Review - other Contamianted Sites Staff submitted comments to the US Air Force Remedial Project Manager on the Draft 2010 Comprehensive Environmental Monitoring Report. The report covered the groundwater and surface water sampling at each of the 5 groundwater zones at King Salmon Air Station. THe main issues with the report was the inconsistencies with the work plan regarding the number and location of wells to sample. Jonathan Schick
12/4/2011 Document, Report, or Work plan Review - other Contaminated Sites Staff recieved Responses to our comments on the Draft 2010 Comprehensive Environmental Monitoring Report for the 5 groundwater zones at King Salmon. The majority of the responses were acceptable but there were several technical issues that will still need to be resolved before the report can be finalized. Jonathan Schick
12/4/2011 Update or Other Action Contaminated Sites Staff recieved responses to our comments from November 3 and a revised Final Version of the 2010 Comprehensive Environmental Monitoring Report. The responses were not adequate and further review of the comments and the document are required. Jonathan Schick
12/9/2011 Document, Report, or Work plan Review - other Contaminated Sites Staff submitted a letter to the Air Force's Remedial Project manager with regards to the responses to our comments on the 2010 Comprehensive Environmental Monitoring Report. The responses did not address ADEC's concerns about the need for 5-Year Reviews for several of the sites, or our concern about the elevated levels of iron in the surface water at the South Bluffs Treatment Facility. Jonathan Schick
12/9/2011 Document, Report, or Work plan Review - other Contaminated Sites Staff submitted a letter to the US Air Force Remedial Project Manager regarding the remaining technical issues with the Draft 2010 Comprehensive Environmental Monitoring Report. The issues should be amended before the report can be finalized. Jonathan Schick
1/19/2012 Document, Report, or Work plan Review - other Contaminated Sites Staff recieved a revised version of the 2010 Comprehensive Environmental Monitoring Report. The revisions incorporated the requested amendments from the draft and the report should be finalized. Jonathan Schick
3/20/2012 Document, Report, or Work plan Review - other Contaminated Sites Staff recieved the Draft Work Plan for Preliminary Assessments/Site Inspections for Cape Newenham, Cape Lisburne, Indian Mountain, Tatalina LRRS, and King Salmon Air Station. Jonathan Schick
4/3/2012 Meeting or Teleconference Held Contaminated Sites Staff met with members of the Remedial Project team from the US Air Force and their consultants and discussed the comments on the Draft Work Plan for Preliminary Assessments/Site Inspections for Cape Newenham, Cape Lisburne, Indian Mountain, Tatalina LRRS, Eareckson Air Station, and King Salmon Air Station. The main concerns were that the work plans were developed without input on the scope of work from the regulator and that the limited scope did not allow for sampling of the necessary constituents to properly characterize sites where fuels were not the only concern. Jonathan Schick
5/14/2012 Document, Report, or Work plan Review - other Contaminated Sites Staff recieved the Final versions of the Work Plan for Preliminary Assessments/Site Inspections for Cape Newenham, Cape Lisburne, Indian Mountain, Tatalina LRRS, and King Salmon Air Station. Jonathan Schick
5/24/2012 Document, Report, or Work plan Review - other Contaminated Sites Staff recieved the Final Version of the 2010 Comprehensive Environmental Monitoring Report dated May 2012 for King Salmon Air Station that covers the groundwater and surface water monitoring at each of the 5 groundwater zones at the Air Station. Jonathan Schick
9/4/2013 Document, Report, or Work plan Review - other Submit approval letter to US Air Force for "Final Work Plans 2013 Comprehensive Environmental Monitoring” King Salmon Airport, Alaska. The Final work plans identify the groundwater monitoring and Institutional Control monitoring requirements for Groundwater Zones 1, 2, 3, 4, 5, 6, and 7. Sampling is scheduled to begin this week. The plan includes sampling groundwater at six locations in Zone 5. Guy Warren
9/17/2013 Document, Report, or Work plan Review - other Submit approval letter to US Air Force for the Final 2012 Comprehensive Environmental Monitoring Report for King Salmon Airport. Project activities for Zone 5 included sampling of ground water and surface water, and sediment. Sample results were consistent with last year. Recommendations for Zone 5 include reducing analytes at several wells and discontinuation of Surface water sampling at two locations. Recommendations are appropriate. Guy Warren
7/10/2014 Update or Other Action Submit approval letter to US Air Force for the Final 2013 Comprehensive Environmental Monitoring Report for King Salmon Airport. Project activities for Zone 5 included ground water, sediment, and surface water sampling for hydrocarbons and TCE. Sample results were consistent with previous years. No changes in monitoring recommended. IC inspections did not identify any discrepancies. Guy Warren
8/28/2014 Document, Report, or Work plan Review - other Submit approval letter to US Air Force for "Final Work Plans 2014 Comprehensive Environmental Monitoring” King Salmon Airport, Alaska. The Final work plans identify the groundwater monitoring and Institutional Control monitoring requirements for Groundwater Zones 1, 2, 3, 4, 5, 6, and 7 as well as maintenance at the bio-cells. The plan includes sampling groundwater at six monitoring wells and surface water/sediment at 2 locations in Zone 5. Guy Warren
2/10/2016 Document, Report, or Work plan Review - other Submit approval letter for Final 2014 Long Term Monitoring Report for King Salmon Divert. Groundwater, Surface water, and sediment samples were collected. An LUC inspection was also conducted. Monitoring at the site will continues with some minor changes to analysis parameters and reductions in sampling locations. Guy Warren
4/11/2016 Update or Other Action Submit approval letter for Final 2015 Long Term Monitoring Report for King Salmon Divert. Groundwater, surface water and sediment samples were collected from multiple locations and an IC inspection was conducted. Contaminant concentrations continue to exceed DRO and GRO cleanup levels in several wells. Results for several PAHs and VOCs exceed water quality criteria for surface water samples. Several PAHs and VOCs were also detected in sediment samples. Monitoring shall continue at this site. Guy Warren
12/15/2016 Update or Other Action The AF is currently preparing a ROD for Zone 5. The draft document is presently in USAF legal review and should be provided to ADEC in the near future. Holly Weiss-Racine
2/17/2017 Update or Other Action Draft LTM Report received for review and comment. All six of the monitoring wells were sampled for DRO. Four of the groundwater samples had DRO concentrations that exceeded the RAO of 1.5 mg/L and the RAO of 1.3 mg/L. Two wells were analyzed for VOCs; neither result exceeded the RAO for TCE. Overall, there was an increase over 2015 concentrations of DRO and GRO. Two wells near the runway were sampled for PFOA/PFOS. The results for FT01-MW01 were 3.3 µg/L for PFOA and 11 µg/L for PFOS. These results are both above the ADEC proposed criteria of 0.4 µg/L. The results for MW83 were 0.005/0.0044 µg/L. The surface water sample RFC-04 exceeded the ADEC Regulatory Criteria for TAH and TAqH. RFC-04 also had surface water exceedences for m,p-xylene, and o-xylene. TCE was not detected in the surface water. The RFC-04 sediment sample exceeded criteria for fluorene, naphthalene, and xylenes. TCE was not detected. Naphthalene, acetone, and xylene exceeded the screening criteria in the RFC-05 sediment sample, and a low level of TCE was detected As has been observed in previous years, the combined lines of evidence of stable to decreasing hydrocarbon plumes and changes in groundwater chemistry suggest that intrinsic bioremediation in the hydrocarbon-impacted areas of this groundwater system is occurring. Intrinsic bioremediation of fuel impacted groundwater is expected to continue in Zone 5. A land use inspection confirmed that no drinking water wells have been installed or excavating has occurred. MW-2 1,2,4-Trimethylbenzene exceeded the cleanup level of 15 ug/L at 210 ug/L, BV-17 at 320 ug/L and BV-17 at 340 ug/L. MW-2 Ethylbenzene exceeded the cleanup level of 15 ug/L at 130 ug/L, BV-17 at 420 ug/L MW-2 Total xylenes exceeded the cleanup level of 190 ug/L at 300 ug/L, BV-17 at 512 ug/L MW-2 Naphthalene exceeded the cleanup level of 1.7 ug/L at 92 ug/L, BV-17 at 92 ug/L See site file for additional information. Louis Howard
3/9/2017 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 80043 name: RAPCON & Red Fox Creek FTA FT004 Louis Howard
3/13/2017 Document, Report, or Work plan Review - other Staff provided comments on the RA-O LTM Report. Section 6.0 Include information about the forthcoming ROD for Zone 5. Section 6.2 Please delete reference to the Draft ROD. Currently 18 AAC 75 is the appropriate source for cleanup levels pending the finalization of a ROD. Section 6.6 ADEC recommends no changes for Zone 5 sampling. It is difficult to tell based on the current text if a change is recommended. Please revise accordingly. No ROD in place, please revise recommendations. See site file for additional information. Louis Howard
9/5/2017 Update or Other Action ADEC received and approved final Work Plans, FSP and HSP for 2017 Long-term Management dated September 2017. Linda (Qi) Liu
5/7/2018 CERCLA PA 'Final Preliminary Assessment Report for Perfluorinated Compounds, King Salmon Divert, March 2018'. The purpose of this PA Report is to identify locations at King Salmon Divert where PFAS may have been released into the environment based on AFFF use and storage and to provide an initial assessment of possible migration pathways and receptors. Areas recommended for further investigation include: FTA 1, FTA 2, FTA 4, Red Fox Creek, and Landfarm and Landfarm Holding Ponds. Areas recommended for initiation of SI include: Building 160, Former Building 152, Building 300, Spray Test Area, Building 617, and Eskimo Creek. Areas recommended for closure with no further investigation include: RAPCON of FTA 1, 1980 Fairchild C-119 Flying Boxcar Crash, 1985 Douglas DC-3 Crash, Buildings 150, 601, 603, and 647, Building 645, and Biocells. Sammi Castle
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
9/20/2018 Update or Other Action PFAS notification letter sent to King Salmon Air Station on this date. This letter advises the Air Force of ADEC's new technical memorandum, Action Levels for PFAS in Water and Guidance on Sampling Groundwater and Drinking Water. The tech memo establishes drinking water action levels for six PFAS compounds when detected in groundwater or surface water used for drinking. Future sampling must include results for all six UCMR3 compounds in accordance with this tech memo. Sammi Castle
10/3/2018 Document, Report, or Work plan Review - other ADEC approved the Final 2017 Long Term Management Report for the King Salmon Divert on this date. Zone 1 recommendations include continuation of monitoring with no changes. Petroleum hydrocarbons and TCE were detected above cleanup levels in groundwater in Zone 2; recommendations include continued monitoring and updating cleanup levels in next 5 Year Review. In Zone 3, low levels of TCE and benzene were detected in the March 2018 SBTS sample, and gabions in King Salmon Creek are being pulled out of alignment; recommendations include reducing sampling at the North and South Bluffs to once every five years. In Zone 4, petroleum hydrocarbons were detected above cleanup levels in the A-aquifer but below cleanup levels in the B-aquifer; recommended that monitoring should continue due to drinking water wells and other sensitive receptors lying downgradient of this site. Monitoring will continue in Zone 5 without changes. Inspections of the Rapids Camp and Landfill were conducted in Zone 6; there were no observations of noncompliance at the landfill. Two of eight wells in Zone 7 exceeded RAO for DRO; 2015 soil samples from three LF01 locations indicated DRO contaminated soil above cleanup levels - this should be excavated and treated. Sammi Castle
11/21/2018 Document, Report, or Work plan Review - other Approval letter sent for 2018 Remedial Action Operations & Land Use Control Inspections Work Plan. This work plan outlines annual monitoring to be conducted at the King Salmon Air Station during November-December 2018. Sammi Castle
3/29/2019 Document, Report, or Work plan Review - other ADEC received the Draft 2018 Remedial Action Operations & Land Use Control Inspections, dated March 2019. This report presents analytical and field data collected during the 2018 field season from six groundwater zones, and the institutional controls inspection at Groundwater Zone 6. ADEC submitted comments to the Air Force in a letter on April 19, 2019. 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
6/4/2019 Document, Report, or Work plan Review - other ADEC received the draft Remedial Action-Construction Report, Naknek River Tidal Zone, dated May 2019. This report details the remediation activities conducted at the Naknek River Tidal Zone (SS012), South Barrel Bluff (LF005), and SA039-DR16 sites, and the sampling of drums containing waste from past remedial activities that were stored in the Biocell/Landfarm Staging Area (drum contents were from DA031, SA036, SA039, FT001, and unknown sources). ADEC submitted comments on the draft report in a letter to the Air Force dated July 10, 2019. Sammi Castle
7/10/2019 Document, Report, or Work plan Review - other ADEC approved the Final 2018 Remedial Action Operations & Land Use Control Inspections, dated May 2019, in a letter to the Air Force on this date. 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
9/10/2019 Document, Report, or Work plan Review - other ADEC received the Draft Work Plans, 2019-2022 Remedial Action Operations & Land Use Control Inspections, dated September 2019. ADEC submitted comments to the Air Force in a letter dated October 9, 2019. Sammi Castle
10/25/2019 Document, Report, or Work plan Review - other ADEC approved the Final Work Plans, 2019-2022 Remedial Action Operations & Land Use Control Inspections, dated October 2019, in a letter dated October 28, 2019. Sammi Castle
6/22/2020 Document, Report, or Work plan Review - other ADEC approved the Final Site Inspection Report of Aqueous Film-Forming Foam Areas, dated June 2020, in a letter on this date. The purpose of this SI is to evaluate whether a release of AFFF-derived PFAS has occurred to soil, surface water, sediment, and groundwater as a result of historical AFFF use at the following 11 areas: Combat Alert Cell, Former Fire Station, Current Fire Station, Spray Test Area, Wastewater Treatment Plant, Eskimo Creek, Red Fox Creek, Fire Training Areas 1, 2, and 4, and the Former Landfarm and Holding Ponds. All areas investigated had PFAS at concentrations above screening levels in some media and will require additional investigation. Sammi Castle
8/28/2020 Document, Report, or Work plan Review - other The Final 2019 Remedial Action Operations & Land Use Control Inspections, dated August 2020, was approved by ADEC in a letter on this date. This report presents analytical and field data collected during the 2019 field season from seven groundwater zones at King Salmon Divert. Sammi Castle
9/9/2020 Document, Report, or Work plan Review - other ADEC approved the Final Work Plan Addendum, 2020 Remedial Action Operations & Land Use Control Inspections, dated September 2020, in a letter on this date. This work plan describes the field investigation/monitoring and reporting activities to be conducted in seven groundwater monitoring zones located at King Salmon Divert during the 2020 field season. Field activities include the sampling of groundwater, surface water, and sediment, and the visual inspections of land use/institutional controls and landfills. Sammi Castle
9/18/2020 Document, Report, or Work plan Review - other ADEC approved the Final Groundwater Zone 5 - Battery Area (DA037) Expanded Remedial Investigation Work Plan, dated September 2020, in a letter on this date. Project objectives are to determine the nature and extent of buried and surface debris along the trench, determine nature and extent of contamination in soil and groundwater along the trench, and speciate trivalent vs. hexavalent chromium at the battery disposal areas. Sammi Castle
10/2/2020 Document, Report, or Work plan Review - other ADEC approved the Uniform Federal Policy-Quality Assurance Project Plan, Expanded Remedial Investigations: Groundwater Zones 2 (OT028) and 5 (OT031) and Source Area and Remedy Evaluation: Lower Naknek River Storage Area Site (SS012 Lower), dated September 2020, in a letter on this date. This QAPP addresses Aqueous Film Forming Foam investigations in Groundwater Zones 2 and 5, Vapor Intrusion investigation in Groundwater Zone 2, and source area and remedy evaluation at the Lower Naknek River Storage Area Site SS012 Lower. 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
3/26/2021 Document, Report, or Work plan Review - other ADEC approved the Final Groundwater Zone 5 - Circle Landfill (LF006) and Landfill No.3 (LF007) Expanded Remedial Investigation Work Plan, King Salmon Divert, Alaska, dated March 2021, in a letter on this date. The objectives of the work plan are to gather information to better understand the remaining nature and extent of contamination at the landfills and determine whether further remedial action is necessary to protect human health and the environment. LF006 and LF007 are located on land owned by Paug-Vik Inc., and were used from the early 1950s through 1960s and from 1969 through 1976, respectively. The landfills were used to dispose of general refuse, scrap metal, buliding materials, drums, and some quantities of shop waste including paints. Sammi Castle
5/21/2021 CERCLA RI Plan Approved ADEC approves the Technical Memorandum, Battery Area (DA037) Expanded Remedial Investigation Work Plan Addendum, King Salmon Divert, Alaska, dated 3 May 2021 as final. Darren Mulkey
6/8/2021 CERCLA Remedial Action Completion Report ADEC approved Final 2020 Remedial Action Operations & Land Use Control Inspections, Base Living Area (Zone 1), Base Industrial Area (Zone 2), North & South Bluffs & SBTS (Zone 3), Naknek River Storage Area (Zone 4), RAPCON & Red Fox Creek (Zone 5), Naknek Rec Camp I, Naknek Rec Camp II, King Salmon Divert, Alaska, dated June 2021. This report presents analytical and field data collected during the 2020 field season from five groundwater zones at King Salmon Divert, Alaska (KSD), Naknek Rec Camp I, and Naknek Rec Camp II. Darren Mulkey
8/23/2021 Document, Report, or Work plan Review - other The Final 2021 King Salmon Divert RAO LUC WP Addendum was reviewed and an approval letter was sent by ADEC. This 2021 Work Plan Addendum to the 2019 UFP-QAPP describes the field investigation/monitoring and reporting activities to be conducted during the 2021 Remedial Action Operations and Land Use Control Inspections under U. S. Army Corps of Engineers (USACE) Contract No. W911KB19C0015. Sites included in this workplan are: GWZ1, GWZ2, GWZ3, GWZ4, GWZ5, GWZ6, and GWZ7.In addition to sampling groundwater, surface water, and sediment, land use controls (LUCs) have been established to prevent exposure to contaminated media. LUC inspections for five groundwater zones, Naknek Rec Camp I, and Naknek Rec II will be conducted to ensure there have not been any unauthorized excavations or installation of drinking water wells in contaminated aquifers. Annual land fill inspections are also scheduled at the North and South Bluff in Zone 3, and the former landfills in Zone 4 and Zone 6. Additional work in Zone 3 will include barrier fence repair and the installation of signage. The installation and sampling of three groundwater monitoring wells at SA039-DR16 and the installation and sampling of two well points at LF022/SS022 are also included in this work plan. The results of this monitoring effort will be presented in a RA-O and LUC Inspections Report. An evaluation of the nature and extent of contamination with comparison to RAOs will be presented. Conclusions and recommendation based on the monitoring findings will be provided, as appropriate. Ginna Quesada
9/13/2021 Document, Report, or Work plan Review - other ADEC approved Final Work Plan MONITORING WELL INSTALLATION, REPAIR & DECOMMISSIONING for King Salmon Divert, ALASKA dated September 2021. Work will include repairing up to forty-five (45) wells, installing replacement or new monitoring wells at up to five (5) locations, decommissioning up to seventy (70) wells and monitoring points, and replacing well caps where needed in the following sites: GWZ1, GWZ2, GWZ3, GWZ4, GWZ5, and GWZ7. 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
7/6/2022 Document, Report, or Work plan Review - other DEC reviewed the Draft Monitoring Well Installation, Repair, and Decommissioning Report, King Salmon Divert, Alaska, Dated May 2022. The report describes monitoring well installation, repair and decommissioning activities across various sites in Groundwater Zones 1, 2, 3, 4, 5 and Naknek II, located in King Salmon, Alaska. Activities included replacing a monitoring well (MW00-04R) and a well point (GP-1AR), the installation of three monitoring wells (SA039DR16-01, SA039DR16-02, and SA039DR16-03), and the repair and/or capping of 61 wells. Additionally, seventy- four wells were decommissioned. Ginna Quesada
7/18/2022 Document, Report, or Work plan Review - other ADEC reviewed and submitted comments for the Draft 2021 Remedial Action Operations & Land Use Control Inspections, Base Living Area - Zone 1 (OT027), Base Industrial Area & LF022 - Zone 2 (OT028), North & South Bluffs - Zone 3 (OT029), Naknek River Storage Area - Zone 4 (OT030), Rapcon & Red Fox Creek - Zone 5 (OT031), Naknek Rec Camp I (Rapids Camp), Naknek Rec Camp II (Lake Camp), SA039-DR16 Groundwater Investigation, King Salmon Divert, Alaska, dated June 2022. The report describes the land use control inspections, field data, and analytical results from groundwater and surface water sampling conducted during the 2021 field season for Groundwater Zones 1, 2, 3, 4, 5, Naknek Rec Camp I, and Naknek Rec Camp II in King Salmon, Alaska. Continued groundwater and surface water sampling and land use control (LUC) inspections were recommended for all sites. The groundwater investigation at the SA039-DR16 site, located northwest of Groundwater Zone 2, found no groundwater exceedances of 18 AAC 75.345 Table C groundwater cleanup levels for diesel range organics, residual range organics, and polycyclic aromatic hydrocarbons and site closure was recommended for the site. The report included a 2022 work plan addendum for the upcoming field investigation, monitoring and reporting activities to be conducted during the 2022 remedial action operations and LUC inspections. The work plan addendum addressed the field sampling programs, analytical programs, and land use control inspections planned for each site in King Salmon, Alaska. Additionally, the work plan included a technical memorandum that described the repair process that will be used to manage the section of the South Barrel Bluff gabion wall that is slipping into King Salmon Creek. Ginna Quesada
8/17/2022 Document, Report, or Work plan Review - other ADEC submitted responses to comments received on August 15th 2022 regarding the Draft Monitoring Well Installation, Repair, and Decommissioning Report, King Salmon Divert, Alaska Dated May 2022. Approximately 6 cubic yards of soil cutting material was generated from the monitoring well activities. The approved work plan discussed the soil cutting material getting sampled and characterized prior to disposal, however this report noted historical results were used for characterizing the soil cutting material. Using historical results for characterizing investigative-derived waste is not appropriate, especially when the historical results are for petroleum only and the potentially contaminated media could have impacts from other analytes (per-and polyfluoroalkyl substances and pesticides for example). While the Transport, Treatment, & Disposal Approval forms were submitted retroactively, it is the department’s expectation that these forms be submitted to ADEC for approval prior to the transport and disposal of contaminated media. Per 18 AAC 75.370(b) “A responsible person, owner, or operator shall obtain approval before moving or disposing of soil subject to the site cleanup rules.” ADEC approval was not obtained prior to transporting the soil cutting material offsite. Ginna Quesada
9/8/2022 Document, Report, or Work plan Review - other ADEC approved the Final 2021 Remedial Action Operations & Land Use Control Inspections, Base Living Area - Zone 1 (OT027), Base Industrial Area & LF022 - Zone 2 (OT028), North & South Bluffs - Zone 3 (OT029), Naknek River Storage Area - Zone 4 (OT030), Rapcon & Red Fox Creek - Zone 5 (OT031), Naknek Rec Camp I (Rapids Camp), Naknek Rec Camp II (Lake Camp), SA039-DR16 Groundwater Investigation, King Salmon Divert, Alaska, dated August 2022. The report describes the land use control inspections, field data, and analytical results from groundwater and surface water sampling conducted during the 2021 field season for Groundwater Zones 1, 2, 3, 4, 5, Naknek Rec Camp I, and Naknek Rec Camp II in King Salmon, Alaska. Continued groundwater and surface water sampling and land use control (LUC) inspections were recommended for all sites. The groundwater investigation at the SA039-DR16 source area, located northwest of Groundwater Zone 2, found no groundwater exceedances of 18 AAC 75.345 Table C groundwater cleanup levels for diesel range organics, residual range organics, and polycyclic aromatic hydrocarbons and site closure was recommended for the site. ADEC is tracking SA039-DR16 as a source area part of the King Salmon AS GWZ 2 SA039 (ADEC File No. 2569.38.016.10). Based on the available information, SA039-DR16 does not need further investigation at this time, and ADEC will consider the source area cleaned up. However the King Salmon AS GWZ 2 SA039 site will remain active on the database until all other source areas within SA039 are ready for closure. The report included a 2022 work plan addendum for the upcoming field investigation, monitoring and reporting activities to be conducted during the 2022 remedial action operations and LUC inspections. The work plan addendum addressed the field sampling programs, analytical programs, and land use control inspections planned for each site in King Salmon, Alaska. Additionally, the work plan included a technical memorandum that described the repair process that will be used to manage the section of the South Barrel Bluff gabion wall that is slipping into King Salmon Creek. Ginna Quesada
9/30/2022 Document, Report, or Work plan Review - other ADEC approved the Final Monitoring Well Installation, Repair, and Decommissioning Report, King Salmon Divert, Alaska dated August 2022. The report describes monitoring well installation, repair and decommissioning activities across various sites in Groundwater Zones 1, 2, 3, 4, 5 and Naknek II, located in King Salmon, Alaska. Activities included replacing a monitoring well (MW00-04R) and a well point (GP-1AR), the installation of three monitoring wells (SA039DR16-01, SA039DR16-02, and SA039DR16-03), and the repair and/or capping of 61 wells. Additionally, seventy- four wells were decommissioned. 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
11/10/2022 Compliance Advisory Letter DEC issued compliance advisory letters to the U.S. Air Force, U.S. Army Corps of Engineers, and Paug-Vik Contractors LLC (PVC), to address violations of 18 AAC 75.325(i) and 18 AAC 75.370(b). On June 6, 2022, the U.S. Air Force (USAF) submitted two draft reports, Monitoring Well Installation, Repair, and Decommissioning Report (dated May 2022) and 2021 Remedial Action Operations & Land Use Control Inspections, SA039-DR16 Groundwater Investigation (dated June 2022). The draft reports were prepared by PVC,and described long-term monitoring and well repair activities at Groundwater Zones 1, 2, 3, 4, 5, 6, and 7 in King Salmon, Alaska. Both documents indicated soil cuttings and spent granulated activated carbon (GAC), used during the 2021 field season, were shipped offsite for disposal without DEC approval. Ginna Quesada
12/16/2022 Compliance Advisory Letter DEC accepted the U.S. Air Force, U.S. Corps of Engineers, and Jacobs responses to DEC’s compliance advisory letters sent out November 7, 2022. This issue is now closed. Ginna Quesada
12/19/2022 Compliance Advisory Letter DEC accepted the U.S. Air Force, U.S. Corps of Engineers, and Paug-Vik Contractors, LLC responses to DEC compliance advisory letters sent out November 10, 2022. This issue is now closed. Ginna Quesada
3/3/2023 Document, Report, or Work plan Review - other DEC reviewed and provided comments regarding the Groundwater Zone 5 Expanded Remedial Investigation Report and Human Health and Ecological Risk Assessment for Sites FT003, LF006, LF007, DA037, Preliminary Draft, dated January 2023.The report describes the expanded remedial investigation activities and risk assessment conducted during the 2021 field season for the Former Fire Training Area 3 (FT003), Circle Landfill (LF006), Landfill No. 3 (LF007), and Debris Drums (DA037) sites located in groundwater zone 5 in King Salmon, Alaska. The goal of the report was to resolve existing data gaps from previous investigations and define the nature, extent, and risk associated with existing contamination at the sites. The 2021 field work included soil, groundwater, surface water, and sediment sampling, geophysical investigations, and test pitting. The report recommended to proceed with a Phase I RI for per- and polyfluoroalkyl substances (PFAS) at LF006, risk management for cadmium, aroclor 1254, and aroclor 1260 at DA037, and no further action for FT003, and LF007. Multiple locations remain with lead concentrations exceeding DEC’s human health cleanup levels at DA037. Ginna Quesada
5/18/2023 Site Visit DEC conducted a site visit with the U.S. Air Force. Ginna Quesada
6/5/2023 Document, Report, or Work plan Review - other DEC reviewed and provided comments regarding the Draft 2022 Remedial Action Operations & Land Use Control Inspections, Base Living Area – Zone 1 (OT027), Base Industrial Area & LF022 – Zone 2 (OT028), North and South Bluffs – Zone 3 (OT029), Naknek River Storage Area – Zone 4 (OT030), RAPCON & Red Fox Creek – Zone 5 (OT031), Naknek Rec Camp I, Naknek Rec Camp II, King Salmon Divert, Alaska, dated May 2023. The report describes the field activities conducted during the 2022 field season and summarizes the analytical data. The report recommended continued monitoring and land use control inspections for all the sites. Ginna Quesada
10/27/2023 Document, Report, or Work plan Review - other DEC approved the Final 2023-2024 Remedial Action Operations & Land Use Control Inspections, Groundwater Zone 1 (Base Living Area) Groundwater Zone 2 (Base Industrial Area) Groundwater Zone 3 (North and South Bluffs) Groundwater Zone 4 (Naknek River Storage) Groundwater Zone 5 (RAPCON & Red Fox Creek) Groundwater Zone 6 (Naknek I) Groundwater Zone 7 (Naknek II) King Salmon Divert, Alaska, Dated October 2023.The work plan describes the planned field activities for the 2023 and 2024 field seasons at the Base Living Area (OT027), Base Industrial Area & LF022 (OT028), North and South Bluffs (OT029), Naknek River Storage Area (OT030), RAPCON & Red Fox Creek (OT031), Naknek Rec Camp I, and Naknek Rec Camp II sites located in King Salmon, Alaska. The planned scope of work includes land use inspections, free product recovery, and the continued monitoring of groundwater, surface water, and sediment. Ginna Quesada
2/8/2024 CERCLA Proposed Plan DEC reviewed and provided comments regarding the No Action Proposed Plan for Groundwater Zone 5 Sites FT003 and LF007 King Salmon Divert, Alaska. The proposed plan proposes the preferred alternative of no action at the Landfill No. 3 (LF007) and at the Former Fire Training Area 3 (FT003) sites located in groundwater zone 5 in King Salmon, Alaska. The document proposes no further work under CERCLA and state law to address remaining contamination at LF007 and FT003. 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
4/15/2024 CERCLA Proposed Plan DEC approved the No Action Proposed Plan for Groundwater Zone 5 Sites FT003 and LF007 King Salmon Divert, Alaska. The proposed plan proposes the preferred alternative of no action at the Landfill No. 3 (LF007) and at the Former Fire Training Area 3 (FT003) sites located in groundwater zone 5 in King Salmon, Alaska. The document proposes no further work under CERCLA and state law to address remaining contamination at LF007 and FT003. Ginna Quesada

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