Division of Spill Prevention and Response

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Site Report: King Salmon AS GWZ 1 SS015 POL Tanks


Site Name: King Salmon AS GWZ 1 SS015 POL Tanks
Address: SS15 POL AST Tanks 11-14 Silver Street, Groundwater Zone 1 (OT027), King Salmon, AK 99613
File Number: 2569.38.015.03
Hazard ID: 511
Status: Active
Staff: Louis Howard, 9072697552 louis.howard@alaska.gov
Latitude: 58.694444
Longitude: -156.669167
Horizontal Datum:NAD27


We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.


Problems/Comments

Groundwater Zone 1 (OT27) consists of: Dry Well (DP023), Petroleum, Oil, and Lubricant (POL) Tanks (SS015), Eskimo Creek Seeps (SS011), Waste Accumulation Area No. 2 (SS016), MOGAS Station (SS019). The POL area contains four aboveground storage tanks (ASTs), designated AST 11, AST 12, AST 13, and AST 14, with secondary containment for individual and multiple tanks. ASTs 11 and 12 each have a 214,000-gallon capacity; AST 13 has a 516,000-gallon capacity; and AST 14 can hold 105,000 gallon. Fuel spills and releases from the tank farm into surrounding soil and groundwater, adjacent wetlands, and Eskimo Creek. Operation dates from pre-1950 to present. An estimated 14,000 to 54,000 cubic feet (105,000 to 404,000 gallons) of floating petroleum product is present on the water table at Groundwater Zone 1. The contamination encompasses an area of approximately 410,000 square feet. The POL storage area site is located north of the intersection of Storage Road and Silver Street. The POL area contains 4 ASTs, designated AST 11, AST 12, AST 13, and AST 14, with secondary containment for individual and multiple tanks. ASTs 11 and 12 each have a 214,000-gallon capacity; AST 13 has a 516,000-gallon capacity; and AST 14 can hold 105,000 gallons. Past and present tank contents include JP-4, diesel fuel, and possibly gasoline. Three of the tanks have been taken out of service and one remaining tank has been reconditioned in accordance with ASTM standards. For groundwater zone information and Record of Decision details, see Zone 1 and SS11.



Action Information

Action Date Action Description DEC Staff
9/15/1985 Preliminary Assessment Approved Phase I - Records Search and Site Prioritization. No Longer Assigned
6/15/1986 Update or Other Action Phase II - Task I Pre-Survey Report, Shemya Air Force Base and King Salmon Air Force Base. No Longer Assigned
7/20/1988 Update or Other Action (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Quality Assurance Project Plan by Jeff Hock and Mike Lewis of ADEC dated 7/20/88 indicates Tank Farm at KS Air Base located adjacent to Naknek River has fuel leaking from ground next to facility. No Longer Assigned
9/20/1988 Update or Other Action (Old R:Base Action Code = MS - Monitoring/Sampling). Public Water Supply-Analytical Report by ADEC Douglas Lab indicating less than detection limits of sample from drinking water supply, but water well or supply not documented. No Longer Assigned
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. No Longer Assigned
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. No Longer Assigned
8/25/1989 Update or Other Action (Old R:Base Action Code = PER - Permit Action at Site). Application for Wastewater Discharge Permit, Oil/Water Separator Project on Naknek River, King Salmon Airport, Alaska, August 25, 1989 by Patrick M. Coullahan, Lieutenant Colonel, USAF, Commander; States that petroleum contaminated water seeps out of soil 100 feet from Naknek River near old petroleum storage area and flows into river at 0.5 to 2 gallons per minute. No Longer Assigned
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. No Longer Assigned
10/17/1989 Update or Other Action Notice of Violation letter (although not titled such in subject line) to 5071 CSS/CC Air Force (Lt. Colonel Beil) from ADEC (Bruce Erickson, Anchorage/Western District Office Supervisor) regarding the unreported and unapproved oil / water separator removal resulting in oil seeping unreported into the wetlands of Eskimo Creek. No Longer Assigned
4/24/1990 Site Ranked Using the AHRM Initial ranking. No Longer Assigned
9/1/1990 Update or Other Action (Old R:Base Action Code = FI - Field Inspection (General)). Another tank began leaking and additional bunker C oil is surfacing per Army Corps of Engineers notification. No Longer Assigned
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. No Longer Assigned
8/9/1991 Site Number Identifier Changed Old# 88210133703 New# 88250133703 Western district now. Louis Howard
1/1/1992 Site Added to Database Fuel spills. Louis Howard
3/20/1992 Update or Other Action File updated significantly by ADEC from new found file information. Louis Howard
7/15/1992 Update or Other Action Remedial Investigation / Feasibility Study at Eleven Sites, final report (3 volumes, dated September 1993). Total petroleum hydrocarbons were detected in several soil samples collected at the site. No GW samples were collected, however, the TPH present in the soil immediately above the GW suggests that GW in the area is contaminated. Recommended action - conduct additional soil investigation to further evaluate the extent of TPH contaminated soil. GW - additional study of GW in the area be undertaken as par of studies underway at the Eskimo Creek Site. Additional information is necessary to define the extent of TPH that exceed ADEC guidance for cleanup levels. Suspected TPH in GW extends beyond the site and is likely comingling with at least one other GW plume originating from a different source. Study of multiple source comingled plumes can be done more efficiently when conducted together. See site file for additional information. Louis Howard
8/6/1992 Notice of Violation Notice of Violation letter dated August 12, 1992 to 643 SPTS/CC Air Force (Lt. Colonel Jimmy Harris) from ADEC (Michael Lewis, District Engineer) regarding the sanitary sewer Notice of Violation issued August 6, 1992, ADEC Permit Number 9125-DB009. 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
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
12/15/1993 Update or Other Action King Salmon Air Station, Analytical Results: Private Water Wells (dated March 1, 1994) 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 Risk Assessment Report Approved 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
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 Number2 sites did not require further investigation. POL Storage Tanks (SSO15) The POL tanks appear to be the primary source of petroleum contamination in and on the water table and Eskimo Creek wetlands. The free product plume decreased in size over the past five years. In particular, a significant reduction in plume size coincided with the base drawdown. The recovery wells are located in areas where non-recoverable amounts of free product are present. The main migration direction for free product is eastward from the POL Storage Tanks, although migration westward from the tanks is also possible. Product migration may preferentially follow zones of higher aquifer permeability. The dissolved phase petroleum plume has decreased slightly in the past two years. Eskimo Creek (5501I1) Wetlands at Eskimo Creek are contaminated with petroleum. The wetlands are affected by petroleum contamination originating at the POL Storage Tanks. See site file for additional information. Louis Howard
9/13/1995 Update or Other Action (Old R:Base Action Code = RIFS - Remedial Investigation / Feasibility Study). RIFS action added by Shannon and Wilson on 3/13/97, based on Relative Risk Evaluation Worksheet dated 9/13/95. Actual current phase is Feasibility Study. Pathway: groundwater to SS11 plume to wetlands, to Eskimo Creek (during flooding events). Receptors: mammals and birds in wetlands; red salmon fisheries/commercial and subsistence fishers. S&W-Miner
6/15/1996 Update or Other Action Final Installation-wide Environmental Baseline Survey Louis Howard
6/15/1996 Interim Removal Action Approved COE installed product recovery systems at Eskimo Creek to intercept and remove separate-phase petroleum product seeping into adjacent wetlands No Longer Assigned
10/15/1996 Update or Other Action Final Field Report for Spring 1996, 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 report Gretchen Pikul
1/28/1997 Update or Other Action Final Feasibility Study Eskimo Creek Product Recovery System. 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
10/28/1997 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
10/30/1997 Update or Other Action King Salmon Airport Groundwater Zone OT027, Eskimo Creek (SS011), POL Storage Tanks (SS015), and Dry Well (DP023), The Proposed Plan for Remedial Action (dated October 27, 1997). Following two years of monitored natural attenuation investigations in 1997 and 1998, it was necessary to revise the remedial action; an updated proposed plan was issued August 8, 1999. 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
5/12/1998 Update or Other Action Final King Salmon USTs - Sumary 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
8/13/1998 Meeting or Teleconference Held Public Meeting for Modified Risk Assessment on Groundwater Zone 1 Buildings (#647 and #649) 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
9/23/1998 Update or Other Action Risk Assessment Report, Groundwater Zone 1, Buildings #647 and #649 (draft dated July 1998, final dated September 1998). Gretchen Pikul
12/2/1998 Update or Other Action 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
2/24/1999 Update or Other Action Final Tier II Ecological Risk Assessment for Piscivorous Wildlife Inhabiting Eskimo Creek report (dated May 1997) Gretchen Pikul
6/8/1999 Update or Other Action Final Focused Aquatic Biota Sampling Workplan (dated May 1999) Gretchen Pikul
6/15/1999 Leaking Underground Storage Tank Corrective Action Underway Bioventing systems operational, systems operate during warm months Gretchen Pikul
7/29/1999 Update or Other Action Eskimo Creek Site Assessment (aka downtown seep) dated July 1999. Prepared by Hart Crowser for ADEC - Project Manager Jim Frechione. Gretchen Pikul
8/13/1999 Update or Other Action CG-027 (Formerly Groundwater Zone 1) Final Feasibility Study Report (draft dated June 1999, final dated August 1999) Gretchen Pikul
8/13/1999 Update or Other Action Groundwater Monitoring Report, Groundwater Zone 1, 1997 (draft dated January 1999, final dated July 1999) Gretchen Pikul
8/30/1999 Proposed Plan Final Proposed Plan for Interim Remedial Action, Groundwater Zone 1 Gretchen Pikul
1/13/2000 Update or Other Action ADEC received 3 letter reports - Monthly Monitoring, Discharge Monitoring Report for Eskimo Creek I and II - October 1999 (dated December 2, 1999); November 1999 (dated December 15, 1999); December 1999 (dated January 7, 2000) with TCE at 1.32 ug/L detected in the effluent sample Gretchen Pikul
1/15/2000 Update or Other Action Focused Aquatic Biota Sampling, Technical Report (draft dated January 2000; ADEC comment letter dated 3-2-00; final not received yet) 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
5/18/2000 Update or Other Action Groundwater Zone 1 Interim Record of Decision - draft dated April 2000; ADEC initial management briefing meeting on 4-27-00; initial ADEC comments dated 5-3-00; comment resolution meeting on 5-18-00; draft final version dated ***, received on ***; ADEC management briefing meeting on ***; final version dated ***, received on ***; ADEC signed on ***; Air Force signed on ***. Gretchen Pikul
7/5/2000 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - March 2000 (dated June 15). Gretchen Pikul
7/5/2000 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - February 2000 (dated June 16). Gretchen Pikul
7/5/2000 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - January 2000 (dated March 15). Gretchen Pikul
7/25/2000 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - April 2000 (dated June 1and received on July 25). Gretchen Pikul
7/25/2000 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - June 2000 (dated July 10 and received on July 25). Gretchen Pikul
7/25/2000 Site Ranked Using the AHRM Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - May 2000 (dated July 1 and received on July 25). 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
8/30/2000 Update or Other Action Bioscreen Modeling to Document TCE Plume Remediation Timeframe - Zone 1 (dated August 28). Gretchen Pikul
10/4/2000 Update or Other Action Eskimo Creek Impact Study workplan (draft dated June 2000, ADEC comment letter dated June 23, 2000; final dated July 21, 2000 and received October 4, 2000) Gretchen Pikul
11/7/2000 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - July 2000 (dated October 31 and received on November 7). Gretchen Pikul
11/7/2000 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - August 2000 (dated October 31 and received on November 7). Gretchen Pikul
11/7/2000 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - September 2000 (dated October 31 and received on November 7). Gretchen Pikul
11/21/2000 Record of Decision Record of Decision for Interim Remedial Action, Site: Groundwater Zone OT027 (Zone 1) dated November 2000; signed by ADEC on November 21, 2000 and signed by Air Force on December 29, 2000. This Interim ROD presents the selected interim remedial action for Zone 1 groundwater contamination and administrative site closure for DP023 and SS019 within Zone 1. Remaining contamination in other site media (e.g., soil) will be addressed in the Final ROD at a later date. Gretchen Pikul
11/21/2000 Long Term Monitoring Established Record of Decision for Interim Remedial Action, Site: Groundwater Zone OT027 (Zone 1) dated November 2000; signed by ADEC on November 21, 2000 and signed by Air Force on December 29, 2000. This Interim ROD presents the selected interim remedial action for Zone 1 groundwater contamination and administrative site closure for DP023 and SS019 within Zone 1. Remaining contamination in other site media (e.g., soil) will be addressed in the Final ROD at a later date. Gretchen Pikul
2/5/2001 Update or Other Action Intrinsic Remediation Study, Groundwater Zone 1, 1998 Results, King Salmon Airport (draft dated April 1999; final report dated December 2000 and received February 5, 2001). Gretchen Pikul
2/5/2001 Update or Other Action Final Intrinsic Remediation Report - Groundwater Zone 1 - 1998 (draft dated April 1999 and received on May 4, 1999; ADEC comment letter dated August 19, 1999; final dated December 2000 and received February 5, 2001). Gretchen Pikul
2/5/2001 Update or Other Action Groundwater Monitoring Report - Groundwater Zone 1 - 1998 (draft dated April 1999 and received May 4, 1999; ADEC comment letter dated August 19, 1999; final dated December 2000 and received February 5, 2001). Gretchen Pikul
2/5/2001 Update or Other Action Intrinsic Remediation Study, Groundwater Zone 1, 1998 Results, King Salmon Airport (draft dated April 1999, ADEC comment letter on 2nd version dated November 7, 2000, final report dated December 2000, received on February 5, 2001) Gretchen Pikul
2/5/2001 Update or Other Action Groundwater Monitoring Report, Groundwater Zone 1, 1998 Results (draft dated April 1999, final dated December 2000, received on February 5, 2001) Gretchen Pikul
2/5/2001 Update or Other Action Intrinsic Remediation Report - Groundwater Zone 1 - 1998 (final dated December 2000, received February 5, 2001) Gretchen Pikul
2/14/2001 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - October, November and December 2000 (dated February 6 and 7, 2001) - no exceedences. Gretchen Pikul
3/1/2001 Update or Other Action 2000 Limited Field Investigation at Eskimo Creek Treatment System Seeps report (draft dated December 21, 2000, received January 2, 2001 ADEC comment letter dated March 1, 2001) Gretchen Pikul
4/15/2001 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - January 2001 (dated March 15, 2001, received on April 5, 2001, ADEC comment letter dated April 15, 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
4/25/2001 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - February 2001 (dated April 10, 2001) Gretchen Pikul
5/7/2001 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - March 2001 (dated May 2, 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
7/25/2001 Update or Other Action Work Plan - Groundwater Zone 1 (OT027) 2001 Bioslurping Pilot Test and System Design (draft dated July 2001 and received on July 23, 2001; ADEC comment letter dated July 25, 2001; no final 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
10/16/2001 Update or Other Action Eskimo Creek Impact Study Report (draft dated December 2000; ADEC comment letter dated March 2, 2001; ADEC approval letter dated August 20, 2001; final dated October 16, 2001 - relatively minor comments were not addressed in final version). 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). Gretchen Pikul
11/29/2001 Meeting or Teleconference Held Meeting with Air Force, ADEC, and EPA at EPA Seattle office - November 26-29, 2001. Gretchen Pikul
1/8/2002 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
4/9/2002 Update or Other Action Pilot Test Report, Groundwater Zone 1 (OT027), 2001 Bioslurping Pilot Test; draft dated February 2002; ADEC comment letter dated April 9, 2002. Gretchen Pikul
1/28/2003 GIS Position Updated Updated Quadrangle, Latitude, Longitude, Section, Township, and Range fields using TopoZone.com and site maps. No Longer Assigned
4/23/2003 Update or Other Action Remedial System Design for Groundwater and Vadose Zone Remediation at POL Tanks SS015 draft dated March 2003 and received on March 4, 2003; ADEC comment letter dated March 20, 2003; Air Force response to comments received and ADEC approval letter dated March 20, 2003; additional comments and responses received on and updated ADEC approval letter sent on March 21, 2003; final dated April and received on April 23, 2003. Gretchen Pikul
5/2/2003 Update or Other Action 2002 Long-Term Monitoring Report - Base Living Area (Groundwater Zone 1 - OT027) draft dated and received on April 4, 2003; ADEC comment letter dated May 2, 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
2/4/2004 Meeting or Teleconference Held Meeting/teleconference on the Zone 1 pilot test biovent system status. Gretchen Pikul
4/16/2004 Update or Other Action ADEC Source Water Assessment for Public Water System # 260503.001, # 260503.002, and # 260503.005 (3 reports) all in Zone 1; CS received reports via e-mail on April 13, 2004 with request by Drinking Water Program and Air Force to review; CS comment letter dated April 16, 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 Work Plan Addendum Long-Term Monitoring for 2003 Groundwater Zone 1 - OT027 (draft dated and received in July 2003; ADEC comment letter dated August 7, 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 August 8, 2003; final received April 22, 2004). Gretchen Pikul
6/3/2004 Update or Other Action Bioventing Pilot Test Report – Remedial System Design for Groundwater and Vadose Zone Remediation at POL Tanks ST015; draft dated May 2004 and received on June 3, 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
7/16/2004 Update or Other Action 2003 Long-Term Monitoring Base Living Area (Groundwater Zone 1 – OT027); draft dated May 11 and received May 14, 2004; ADEC comment/conditional approval letter dated June 7; Air Force Comment Response received on July 16, 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
8/26/2004 Update or Other Action Bioventing Pilot Test Report – Remedial Design for Groundwater and Vadose Zone Remediation at POL Tanks SS015; draft dated May 2004 and received on June 3, 2004; final CD version only (dated July 2004) received on July 26, 2004; final report dated July 2004 and received on August 26, 2004. Gretchen Pikul
8/27/2004 Update or Other Action 2004 Work Plan Addendums: 2004 Long-Term Monitoring Groundwater Zone 1 – OT027; draft dated July 8, 2004 and received on July 27; ADEC comment letter dated August 5, 2004; Air Force Comment Response received on and ADEC approval letter sent on August 27, 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
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 2569.38.015.03. Aggie Blandford
4/21/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed. Jonathan Schick
4/14/2011 Report or Workplan Review - Other Contaminated Sites Staff recieved the Draft Work Plan for Monitoring Well Decommissioning and Repair for all sites across the King Salmon Installation. Jonathan Schick
6/21/2011 Update or Other Action Contaminated Sites Staff recieved responses to our comments on the Draft Work Plan for Monitoring Well Decommissioning and Repair. The responses were acceptable and the plan should be approved to be implemented in the field. 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 Report or Workplan Review - Other Contaminated Sites Staff recieved the Summary Report for Monitoring Well Decommissioning and Repair for King Salmon. The monitoring wells that were worked on during this program were located in all of the groundwater zones and at many of the individual sites at the installation. The report contained a short narrative, but mostly presented the outcome of the program through before and after photographs for each well location where work was performed. Jonathan Schick
8/29/2011 Report or Workplan Review - Other Contaminated Sites Staff submitted a letter to the AIr Force's Project Manager approving the final report for the Monitoring Well Decommissioning project. The report detailed the 2011 activites at the sites across many areas at King Salmon Air Station. Jonathan Schick
11/17/2016 Update or Other Action The AF is aware that a final ROD needs to be prepared for Zone 1. The closest groundwater monitoring wells to the POL tanks (SS015) included in the current groundwater monitoring program are MW-41 (~100 feet to the SE) in aquifer B and MW-6 (~200 feet to the SSE) in aquifer A. MW-41 is consistently one of the hottest wells in groundwater Zone 1 for TCE and DRO. It is unknown if this if from site SS015 or other CS sites in the vicinity. Holly Weiss-Racine
2/15/2017 Update or Other Action 3rd 5YR received for review and comment. Issues for Zone 1 identified during this review were: Land use controls (LUCs) listed in Section 2.5 of the first Five-Year Review (USAF,2006) have not been fully implemented. The ROD for Zone 1 has not been finalized. An updated HHRA was performed for Zone 1 groundwater in 2015 to assess current conditions and evaluate updated TCE toxicity values. In 2014, the State of Alaska published revised guidance for TCE exposures for women of child-bearing age. For groundwater, this guidance recommends TCE exposure levels greater than 0.0025 micrograms per liter should not occur for this receptor group, which is lower than the RAO identified for Zone 1. However, this recommendation is specific to women of child-bearing age who are directly exposed to TCE and not just considered as potential future receptors. RAOs presented in the Zone 1 ROD utilized criteria presented from 18 AAC 75 for groundwater and 18 AAC 70 for surface water (Table 2-2). Revisions to 18 AAC 75 in 2015 and 18 AAC 70 in 2012 have not changed any of the RAOs for COCs in the B-Aquifer groundwater and surface water. For the A-Aquifer, the cleanup levels were increased by a factor of 10 because the A-Aquifer is not used as a drinking water source. The use of the factor of 10 increase is no longer promulgated by ADEC. Therefore, the RAOs for the A-Aquifer may not be protective of groundwater. However, LUCs were required as part of the remedies for sites within Zone 1. The LUCs restrict the installation of drinking water wells within the A- and B-Aquifers in Zone 1, and restricting groundwater use or contact. Therefore, the remedy remains protective of human health. For sediment, the ecological criteria presented as RAOs represent current guidance. See site file for additional information. Louis Howard

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