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Site Report: King Salmon AS GW Zone 4 OT030

Site Name: King Salmon AS GW Zone 4 OT030
Address: Naknek River Storage, King Salmon, AK 99613
File Number: 2569.38.018
Hazard ID: 2631
Status: Active
Staff: Ginna Quesada, 9074515960 ginna.quesada@alaska.gov
Latitude: 58.688722
Longitude: -156.687750
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

OT030 Groundwater Zone 4 has petroleum groundwater plumes and contaminated soil (mainly within the smear zone) from former storage tanks, and a landfill where monitoring has not shown any contaminants exceeding groundwater cleanup levels. Solvent contaminated groundwater has been present in 2 locations in the past; however, the 2001 data reveals no solvent contaminated groundwater above groundwater cleanup levels. 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 4 include: SS012U Upper Naknek Seep; SS012L Lower Naknek Seep; and LF008 Landfill #5. A Record of Decision (dated April 1999) was signed by ADEC and the Air Force. 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
6/15/1987 Update or Other Action Installation Restoration Plan, King Salmon Air Station, Stage 1, Final Technical report (dated August 1989). Former Staff
3/15/1988 Update or Other Action Installation Restoration Plan, King Salmon Air Station, Stage 2, Final Draft Technical report (dated October 3, 1990). Former Staff
6/30/1989 Update or Other Action (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). CH2M Hill stage 2 workplan to assess 4 sites: North and South Barrel Dump Sites; Naknek River; and Eskimo Creek seeps. Remedial investigation and feasibility study occur in parallel. Former Staff
6/30/1989 Update or Other Action (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). CH2M Hill QA/QC plan for various King Salmon Airport sites; the sites include the Eskimo Creek oil seep, North Barrel Dump, Naknek River seep, and the South Barrel Dump. A total of 17 sites were addressed by this QA/QC plan. Former Staff
8/29/1989 Update or Other Action (Old R:Base Action Code = SI - Site Investigation). CH2M Hill site investigation. The airport was originally constructed in the early 1940s to support the war effort. The airport was turned over to the State of Alaska in 1959. The State continues to operate the site with the Air Force as the major tenant. A White Alice site was activated in 1957. It was deactivated in 1979 and replaced with an Alascom Satellite earth terminal. Only a small portion of the site is owned by the State. The majority is on military land. In 1980, 340 military personnel resided at King Salmon Airport. The north and south barrel dump site, Eskimon Creek Seep and Naknek River seep sites were tested for over 146 constituents of concern. Of these, 39 potential contaminants of concern were identified. High concentrations of TPH were identified in shallow wells and soils at this site. Floating product (>1 foot) was identified at the Eskimo Creek Seepage Site. Lead and petroleum hydrocarbon contamination levels at this site pose a threat to fish and wildlife (page 126). No immediate environmental threat was identified at the Naknek River Seep (page 126). Both the north and south dump sites could pose a threat to fauna since the detection limits used in analyses were greater than the chronic aquatic organism toxicity. Remediation, based on stage 2 sampling, at both barrel dump sites could include: no action; restricting site access; preventing the migration of contaminants. Containment preferred remediation route. The Naknek River and Eskimo Creek seeps will receive further sampling to identify a specific remediation response. In general, based on further sampling results, the alternatives are: no action, which will not occur based on preliminary site investigation; recovery of floating product; treatment of shallow groundwater; excavation of contaminated soils; restrict site access; containment. Former Staff
1/1/1990 Update or Other Action (Old R:Base Action Code = SI - Site Investigation). Former Staff
10/3/1990 Update or Other Action (Old R:Base Action Code = SI - Site Investigation). CH2M HILL Final Draft Technical report under USAF contract # F33615-85-D-4535, Delivery Order # 012 sent to ADEC. This report only deals with 2 areas (Eskimo Creek and Naknek River) out of 4 past hazardous waste disposal and spill sites previously prioritized and grouped (stage 1). Naknek R. = Lower and Upper Naknek because of different contamination sources at each area along with a difference in the tyhpe and amount of contaminants of concern. In the Upper Naknek 2 plumes encompass 7,000 cubic yards and 9,000 cubic yards of contaminated soil above 100 ppm TPH at a depth of 3 to 5 '. Groundwater at 1 of 7 wells revealed aromatics of 12 ug/l benzene. Lower Naknek also consists of 2 distinct plumes of TPH to a depth of 3' The material at each plume above 100 ppm estimated to be 2,200 cubic yards and 3,300 cubic yards. Low levels of aromatics were detected in 2 wells below MCLs. Trichlorethane was detected in MW-57 at 120 ug/l exceeding MCL of 5 ug/l. Eskimo creek had 3 wells MW-22B, MW-28 and MW-38 exceed MCL for benzene (5 ug/l) 56, 23, and 8 ug/l respectively. 5 wells exceeded the MCL of 5 ug/l for trichlorethane MW-31, MW-47, MW-38, MW-30, MW-34 (18, 64, 26, 90, 29 ug/l respectively). 8 wells had naphthalene and methylnaphthalene ranging from 20 to 18,000 ug/l. Soil boring and hand auger soil samples revealed TPH from 4.2 ppm to 47,7000 ppm to depths to 20'. Various recommended remedial actions were presented for the 3 sites with all measures requiring monitoring for a minimum of 3 years to assess site conditions and the need for technical modifications to the selected remedial measures. Former Staff
7/23/1991 Update or Other Action Compliance Orders by Consent for Oil Discharge Prevention and Contingency Plan Submittals for King Salmon AFB and Shemya AFB bulk fuel facilities letter dated July 23, 1991 to 11th Air Force (Gene Gallogly, Chief of Environmental Planning Division) from ADEC (Svend Brandt-Erichsen, Regional Oil Program Coordinator). ADEC letter dated August 2, 1991 regarding the Compliance Order by Consent was issued. Louis Howard
3/15/1992 Update or Other Action Report of Groundwater Monitoring Well Sampling and Analysis (dated July 31, 1992). 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 Groundwater Monitoring Performed October 1992 (dated April 7, 1993). 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 Subsurface Investigation, Construction of Soil Containment Cells, Construction of French Drain, and Removal of Hydrocarbon-Contaminated Soils: Naknek River Storage Site SS12 (dated September 1993). Louis Howard
7/22/1993 Update or Other Action Compliance Advisory letter dated July 22, 1993 to Air Force 11 Civil Engineer Operations Commander (Lt. Colonel Patrick Coullahan) from ADEC (Ronald Klein, Contaminated Site Programs Supervisor) based on information in the Report of Investigation of Current Practices Under and Aboveground POL Storage Tank Operations at King Salmon Airport dated April 1993. The Air Force response letter is dated August 19, 1993. Louis Howard
9/1/1993 Update or Other Action (Old R:Base Action Code = FS - Feasibility Study (General)). Former Staff
9/15/1993 Update or Other Action Final Report, Subsurface Invesitgation, Construction of Soil Containment Cells, Construction of French Drain, Removal of Hydrocarbon-Contaminated Soils and Biotreatment Feasibility Study, Naknek River Sites (SS12), conducted September and October 1992, dated September 1993, prepared by SAIC. 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 Site ranked. 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 Diesel 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
6/15/1994 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
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
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
8/15/1995 Update or Other Action Seep Sampling Eskimo Creek and Naknek Sites (final dated June 1996). Groundwater monitoring wells were sampled at Eskimo Creek and Naknek seeps. Results indicated that the recovery systems were still required. 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
6/15/1996 Update or Other Action Private drinking water wells located southeast of Naknek River Seeps were sampled to evaluate water quality. Louis Howard
6/15/1996 Update or Other Action Final Human Food Chain, Aquatic Biota, and Wetlands Evaluation workplan. Louis Howard
6/15/1996 Update or Other Action Final Installation-wide Environmental Baseline Survey. Louis Howard
7/11/1996 Update or Other Action Seep Sampling At Eskimo Creek and Naknek Sites (draft dated January 1996, final dated July 1996). Louis Howard
10/15/1996 Update or Other Action Final Field Report for Spring 1996, Human Food Chain, Aquatic Biota, and Wetlands Evaluation 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
11/15/1996 Update or Other Action Private drinking water wells located southeast of Naknek River Seeps were sampled to evaluate water quality. 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 Feasibility Study Screening Assessment (draft 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
10/23/1997 Update or Other Action Groundwater Monitoring Zones 2 and 4, Addendum to Workplan for Groundwater Monitoring Zone 1 (dated September 1997, received October 1997). Gretchen Pikul
10/28/1997 Update or Other Action Underground Storage Tanks Approach for Remediation and Closure (dated December 11, 1995, received October 28, 1997) and accompanying documents. Gretchen Pikul
10/28/1997 Update or Other Action Underground Storage Tanks Approach for Remediation and Closure (dated December 11, 1995) and accompanying documents 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
5/12/1998 Update or Other Action King Salmon USTs Summary of UST Site Historical Information dated April 20, 1998, site included. Gretchen Pikul
6/10/1998 Update or Other Action Sampling and Analysis Plan and associated plans, Underground Storage Tank and Pipeline Monitoring (draft dated April 1998, final dated May 1998, received on June 10, 1998). 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
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
6/2/1999 Update or Other Action Sampling Results from Lower Naknek Seep Oil-Water Separator (dated and received on June 2, 1999). Gretchen Pikul
6/16/1999 Long Term Monitoring Established Record of Decision for Final Remedial Action, Naknek River Storage Sites, Landfill Number 5, and Zone 4 Groundwater (dated April 1999) signed by ADEC on March 25, 1999, and signed by Air Force on June 16, 1999 (document received on September 16, 1999). Gretchen Pikul
6/16/1999 Record of Decision Record of Decision for Final Remedial Action, Naknek River Storage Sites, Landfill Number 5, and Zone 4 Groundwater (dated April 1999) signed by ADEC on March 25, 1999, and signed by Air Force on June 16, 1999 (document received on September 16, 1999). ICs required are notations of contaminants above cleanup levels left in place within Base Master Plan and land records, however, ICs have not yet been established. 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
10/4/2000 Update or Other Action Groundwater Zone 4 and 6 workplan (draft dated June and received June 19; ADEC comment letter dated June 23; final dated August 25 and received October 4). Gretchen Pikul
2/6/2001 Update or Other Action Implementation of Long-Term Groundwater Monitoring and Intrinsic Remediation Assessment of King Salmon Airport Groundwater Zones -2 and -4 (draft dated March 1999; ADEC comment letter dated June 4, 1999; final dated November 2000 and received on February 6, 2001). Gretchen Pikul
4/25/2001 Meeting or Teleconference Held Meeting with Air Force, ADEC, and EPA at EPA Seattle office - April 23-25, 2001. Gretchen Pikul
6/27/2001 Update or Other Action Photographic Journal 2000 Monitoring Program (draft dated December 2000, final dated May 2001 and received June 27, 2001). 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
10/19/2001 Update or Other Action Groundwater Zones 4 and 6 Monitoring Report (draft dated April 6, 2001 and received on April 25, 2001; ADEC comment letter dated June 6, 2001; ADEC approval letter dated August 21, 2001; final dated October 19, 2001). Gretchen Pikul
10/23/2001 Update or Other Action Underground Storage Tank and Pipeline Monitoring Report (draft dated February 1999; ADEC comment letter dated May 14, 1999; final dated April 2001 and received on October 23, 2001). Gretchen Pikul
10/23/2001 Update or Other Action 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). David Pikul
11/28/2001 Update or Other Action Work Plan - Inspection and Maintenance Activities for Groundwater Zone 4 and 6 Landfills - 2001 Monitoring Program (draft dated July 2, 2001 and received July 12, 2001; ADEC comment letter dated July 13, 2001; ADEC approval letter dated August 9, 2001; final dated 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
4/10/2002 Update or Other Action Long-Term Monitoring for 2001, Naknek River Storage (Groundwater Zone 4 - OT030) and Rapids Camp (Groundwater Zone 6 - OT032) - draft dated March 22, 2002 and received on March 27, 2002; ADEC comment letter dated April 10, 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
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
8/22/2003 Update or Other Action Long-Term Monitoring for 2002, Naknek River Storage (Groundwater Zone 4 – OT030) and Rapids Camp (Groundwater Zone 6 – OT032) report draft dated and received on February 21, 2003; ADEC comment letter dated March 7, 2003; ADEC approval letter dated April 14, 2003; final report dated and received in August 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
2/4/2004 Meeting or Teleconference Held Meeting on Air Force compliance projects and actions needed to gain closure, including biovent systems, former marina, and former POL pipeline. Gretchen Pikul
4/22/2004 Update or Other Action Work Plan Addendum Remediation Systems 2003 Operation, Monitoring, and Maintenance at Six Remediation Sites (draft dated and received in July 2003; ADEC comment letter dated August 8, 2003; final received April 22, 2004). Gretchen Pikul
4/22/2004 Update or Other Action Work Plan Addendum Long-Term Monitoring for 2003 Naknek River Storage (Groundwater Zone 4 - OT030, Sites LF008 and SS012) and Rapids Camp Landfill (Site LF003) (draft dated and received in July 2003; ADEC comment letter dated August 7, 2003; ADEC approval letter dated August 20, 2003; final received April 22, 2004). Gretchen Pikul
4/22/2004 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; final received April 22, 2004). Gretchen Pikul
4/22/2004 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; final received April 22, 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
6/21/2004 Update or Other Action Characterization and Remediation of POL-Contaminated Soil as the Former POL Pipeline and MWR Marina Work Plan; draft received May 21, 2004 with expedited review requested by Air Force; ADEC submitted comments via e-mail on May 27, 2004; comment resolution meeting on June 2, 2004; final dated June and received June 21. 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
9/22/2004 Update or Other Action 2004 Work Plan Addendums: 2004 Long-Term Monitoring Naknek River Storage (Groundwater Zone 4 – OT030, Sites LF008 and SS012) and Rapids Camp Landfill (Site LF003); draft dated July 15, 2004 and received on July 27; ADEC comment letter dated July 28; Air Force Comment Response received on September 20 and 21, and ADEC approval letter sent on September 22, 2004. 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
3/25/2005 Update or Other Action 2003 Long-term Monitoring Report Naknek River Storage (Groundwater Zone 4 – OT030, Sites LF008 and SS012), and Rapids Camp Landfill (Site LF003); draft dated June 30 and received on July 9, 2004; ADEC comment letter dated July 28; ADEC QA lab comment resolved by calls and e-mails on August 25; ADEC approval letter dated August 26, 2004; Final document dated March 11, 2005 received March 25. Jeff Norberg
10/25/2005 Update or Other Action Work Plan Addendum - Long-Term Monitoring for 2005 Naknek River Storage (Groundwater Zone 4- OT030, Sites LF008 and SS012) and Rapids Camp Landfill (Site LF003); draft dated June 30, 2005 received July 6; ADEC comment letter Aug 31; comment resolution meeting September 7; ADEC approval letter issued 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
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
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
10/3/2006 Update or Other Action First Five-Year Review – Groundwater Zones 1-4 and 6; draft dated October 2005 received November 8, 2005; ADEC comment letter dated December 7, 2005; revised draft dated January 2006 received January 31, 2006; ADEC comment letter dated July 6; Air Force Comment Response received on August 27; ADEC approval letter dated August 29; Final received October 3, 2006. Jeff Norberg
11/13/2006 Update or Other Action Report - Long-Term Monitoring for 2004 Naknek River Storage (Groundwater Zone 4- OT030, Sites LF008 and SS012) and Rapids Camp Landfill (Site LF003); draft dated July 15, 2005 received July 18; ADEC comment letter Nov 2, 2005; Received Comment Response October 13, 2006; ADEC approval letter issued October 25, 2006; Final dated November 6, 2006 received November 13. Jeff Norberg
1/26/2007 Update or Other Action File number issued 2569.38.018. Melissa Burger
6/1/2007 Update or Other Action Report - Long-Term Monitoring for 2006 Naknek River Storage (Groundwater Zone 4- OT030, Sites LF008 and SS012); draft dated May 15, 2007 received June 1. Jeff Norberg
6/8/2007 Update or Other Action Report - Long-Term Monitoring for 2005 Naknek River Storage (Groundwater Zone 4- OT030, Sites LF008 and SS012) and Rapids Camp Landfill (Site LF003); draft dated June 16, 2006 received June 22; Final dated June 8, 2007. Jeff Norberg
3/18/2008 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
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
10/21/2008 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
10/22/2008 Document, Report, or Work plan Review - other ADEC recieved a copy of the Draft 2007 Comprehensive Environmental Monitoring Report covering Groundwater Zones 1, 2, 3, 4, and RAPCON and Red Fox Creek. It is dated October 2008 and is under review by the State. 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
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
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
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
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 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
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
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
5/25/2011 Update or Other Action ADEC Contaminated Sites Staff recieved the Draft WOrk Plans for 2011 Comprehensive Environmental Monitoring Projects for Groundwater Zones 1 through 4 and inclding RAPCON and Red Fox Creek sites. 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
6/6/2011 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
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 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
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
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
12/4/2011 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
12/9/2011 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
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
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 four A-aquifer wells, two B-aquifer wells, and collecting three surface water/sediment samples in Zone 4 & 6. 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 4 included sampling of ground water, surface water, sediment, and residential well’s in addition to landfill cap inspection. Sample results were consistent with last year. Recommendations for Zone 4 include collection of additional surface water/sediment sample at OT30-04, discontinuation of sampling at several wells, and addition of IC inspections. Recommendations are appropriate. Guy Warren
3/20/2014 CERCLA ROD Periodic Review Received Final "Second Five Year Review for Groundwater Zones 2, 3, and 4". Four issues were identified for Zone 4. These will be addressed in the upcoming CEM work plan. 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 4 included groundwater, surface water, and sediment sampling. An area of petroleum contamination was observed along the shore of the Naknek River down-gradient from sample location MW-57. Surface water and sediment at this location exceeded ADEC default cleanup levels. A supplemental investigation is planned for this area in 2014 with remedial action to follow in 2015. IC inspections identified landfill cap deficiencies that are recommended for repair. Guy Warren
7/29/2014 Update or Other Action Submit comments on the Draft Post-ROD Site Investigation work plan for OT030. The work plan calls for a comprehensive soil and ground water characterization investigation to better characterize the extent of soil and ground water contamination that is impacting the Naknek River. Comments were minor. Guy Warren
8/28/2014 Document, Report, or Work plan Review - other 8-28-14 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 four A-aquifer wells, two B-aquifer wells, and collecting three surface water/sediment samples in Zone 4. 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. 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. Guy Warren
4/11/2016 Update or Other Action Submit approval letter for Final 2015 Long Term Monitoring Report for King Salmon Divert. Groundwater, residential well water, surface water and sediment samples were collected from multiple locations and an IC inspection was conducted. Two absorbent pillows were replaced in the product recovery system. Groundwater monitoring well MW-57 was not sampled due to the presence of 0.13 feet of product in the well. Contaminant concentrations continue to exceed DRO and GRO cleanup levels in several groundwater monitoring wells. Ethylbenzene, naphthalene, xylenes, benzo[a]anthracene and benzo[a]pyrene exceed the ecological risk-based remediation goal in two of three sediment samples. Monitoring shall continue at this site. Guy Warren
9/12/2016 Update or Other Action Submit approval letter for the Final Oy030 Site Investigation Report. The report details the investigation into the source of petroleum contamination that is entering the Naknek River. The report recommends that an EE/CA or FS be conducted to evaluate alternatives to address the surface water impacts. Several data gaps are identified that can be addressed during supplemental investigation or during an upcoming remedial or removal action. Guy Warren
2/17/2017 Update or Other Action Draft LTM Report received for review and comment. Product was detected at MW-57 again this year and the well was not sampled. Product thickness measured 0.05 ft, which does not warrant removal. DRO and GRO were detected above cleanup levels in monitoring wells 502 and MW-51. GRO was also above cleanup levels in MW-62. No surface water samples exceeded the ADEC Regulatory Criteria of 10 micrograms per liter (µg/L) for total aromatic hydrocarbons (TAH) or 15µg/L for total aqueous hydrocarbons (TAqH). The sediment sample from OT30-01 exceeded the criteria for ethylbenzene, total xylenes, and naphthalene. Sheen was present on the surface water. MW-51 1,2,4-Trimethlbenzene exceeded the cleanup level of 15 ug/L at 230 ug/L, Well 502 at 20 ug/L, and at well MW-62 at 62 ug/L. MW-51 total xylenes exceeded the cleanup level of 190 ug/L at 660 ug/L, Well 502 at 255 ug/L. An institutional control inspection verified that no new drinking water wells have been installed in the in contaminated aquifers. The former landfill areas were inspected and the product recovery pillows were replaced. See site file for additional information. Louis Howard
3/13/2017 Document, Report, or Work plan Review - other Staff provided comments on the RA-O LTM Report. Section 5.0 Please include recommendations to restrict access and revegetate Landfill No. 5 and Upper Naknek Area (SS012) to prevent erosion of the caps. Section 5.7.4 Last sentence in section. While it is true that the sample results appear to be declining I do not think you can interpret this as a trend. Surface water/sediment sampling in this location has the potential for variability based on tide, groundwater levels, and substrate. Please delete sentence. See site file for additional information. Louis Howard
8/4/2017 Document, Report, or Work plan Review - other ADEC received a pre-Draft Remedial Action-Construction Naknek River Tidal Zone (Site SS012) Soil Excavation, Transport and Disposal, FT001 Work Plan ON 7/11/2017 and a response letter with comments table was sent out on 8/4/2017. The Work Plan proposed objectives 1) interceptor trench construction and soil treatment w ORC to remove the free product south of MW-57 at lower Naknek River site; 2) soil excavation up to 50 bcy from site SA039-DR16; 3) up to 15 drums sampling stored within the biocells and landfarm area, and offsite disposal; 4) gabion repairs along South Barrel Bluff. Linda (Qi) Liu
8/10/2017 Document, Report, or Work plan Review - other ADEC received a draft Work Plan, Field Sampling Plan & QAPP for 2017 Long Term Management at all seven groundwater zones at King Salmon Divert on 8/4/2017. Response letter with comments was sent out on 8/10/2017. Major work at GWZ4 includes: Sampling 4 A-Aquifer monitoring wells and removing free product from MW-57 if present, sampling 2 B-Aquifer monitoring wells & 5 residential wells, collecting 3 surface water/sediment samples, and analyzing for VOCs, EDB, 1,2,3-TCP, DRO, GRO, Alkalinity, Chloride, Sulfate, Nitrate, Nitrite, Fe, Mn & Methane. Linda (Qi) Liu
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
10/24/2017 Cleanup Plan Approved ADEC received and approved final Work Plan for Remedial Action-Construction Naknek River Tidal Zone (Site SS012) Soil Excavation, Transport and Disposal, FT001 (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 ADEC approved the Final SS012 Lower Source Area and Remedy Evaluation Work Plan, dated August 2020, in a letter on this date. Project objectives include the delineation of DRO contamination in soil to the east and south of MW-61 and north of the interceptor trench, evaluation of the effectiveness of the interceptor trench to prevent DRO migration to the Naknek River, evaluation of sediment and surface water impacts from SS012L along the Naknek River, and investigation of location and length of abandoned piping at SS012L. 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
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
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
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
9/15/2022 Offsite Soil or Groundwater Disposal Approved ADEC approved the Contaminated Media Transport and Treatment or Disposal Approval Form for the disposal of 9 cubic feet of contaminated GAC sourced from Groundwater Zones 1, 2, and 4. The GAC contaminated with DRO, GRO, BTEX, TCE, and PFAS is being sent to U.S. Ecology in Anchorage to be disposed of at the Columbia Ridge Facility in Arlington Oregon. Two 5-gallon spent granular activated carbon (GAC) filters are being shipped off-site for disposal. One filter was used to filter purge and decon water from approximately 30 wells in 2021 and one filter will be used to do the same in September, 2022. Approximately 25% of those have contaminants present (mostly DRO and GRO). Approximately 6 to 8 wells have TCE with concentrations ranging 3 to 65 micrograms/liter and contribute 10 to 15 gallons of purge water. Each GAC will have treated approximately 60 gallons of water. 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
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
8/24/2023 Document, Report, or Work plan Review - other DEC provided comments regarding the Draft Fourth Five-Year Review Sites OT027 (SS011, ST015); OT028 (LF022); OT029 (LF005, LF014); OT030 (LF008, SS012); Naknek Recreation Camp I – LF003 King Salmon Divert, Alaska Naknek Recreation Camp I, Alaska, Dated July 2023. This five-year review describes the selected remedies and the status of their implementation for Groundwater Zone 1 (OT027), Eskimo Creek Seeps (SS011), POL Tanks (ST015), Groundwater Zone 2 (OT028), Eskimo Creek Dump Site (LF022), Groundwater Zone 3 (OT029), South Bluff (LF005), North Bluff (LF014), Groundwater Zone 4 (OT030), Landfill No. 5 (LF008), Naknek River Storage Sites (SS012), and Groundwater Zone 6 Naknek Recreation Camp I (LF003) sites located in King Salmon, Alaska. The review focuses on identifying issues and providing recommendations for improving the performance of selected remedies that were recorded in the King Salmon Records of Decision (RODs). Protectiveness determinations were made for each site to identify the extent that each selected remedy is securing the protection of human health and the environment. 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
4/17/2024 Document, Report, or Work plan Review - other DEC approved the Final Fourth Five-Year Review Sites OT027 (SS011, ST015); OT028 (LF022); OT029 (LF005, LF014); OT030 (LF008, SS012); Naknek Recreation Camp I – LF003 King Salmon Divert, Alaska Naknek Recreation Camp I, Alaska, dated April 2024. Ginna Quesada
4/17/2024 CERCLA Proposed Plan DEC approved the Final Fourth Five-Year Review Sites OT027 (SS011, ST015); OT028 (LF022); OT029 (LF005, LF014); OT030 (LF008, SS012); Naknek Recreation Camp I – LF003 King Salmon Divert, Alaska Naknek Recreation Camp I, Alaska, dated April 2024. Ginna Quesada

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State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
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Physical Location: 410 Willoughby