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Site Report: King Salmon AS GWZ 1 SS011 Eskimo Cr Seeps

Site Name: King Salmon AS GWZ 1 SS011 Eskimo Cr Seeps
Address: SS11 Eskimo Creek Seeps, GWZ 1&2 (OT 27/28), King Salmon, AK 99613
File Number: 2569.38.015.02
Hazard ID: 532
Status: Active
Staff: Ginna Quesada, 9074515960 ginna.quesada@alaska.gov
Latitude: 58.692500
Longitude: -156.662500
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). Eskimo Creek Seeps 1 and 2 (SS11). Contaminants of concern include DRO and TCE. In the mid-1970s, 2 petroleum seeps observed at Eskimo Creek were reported to be discharging at the rate of up to 10 gallons per day. in 1981, floating product recovery pumps and a French drain were installed along the west bank of Eskimo Creek to intercept the floating fuel from Seep 1 before it reached the creek. The French drain was replaced in 1990 and a second French drain was installed upgradient of Seep 2 in 1994. Product recovery wells installed in 1992 were not successful in recovering floating petroleum product form the A-Aquifer. Various media samples were collected in 1995. In 1996 and 1997, a wetlands evaluation and human food chain evaluation were conducted for Eskimo Creek. The results indicated that contaminants have migrated into the wetlands and creek located downgradient of source areas; and further biota sampling was warranted. Various media samples were collected in 1997 and 1998 in 6 sampling events. Petroleum and TCE were consistently present in groundwater samples immediately downgradient of the French drains at both seeps. In 1999, additional biota and media samples were collected. No unacceptable risk was concluded. Zone 1 Record of Decision for Interim Remedial Action (dated November 2000) addresses risk to human health and the environment caused by hypothetical exposure to petroleum product floating on groundwater and TCE-contaminated (and TCE degradation products) groundwater, surface water, and sediment. Bioslurping was intended to address floating product, however 2001/02 pilot tests have proved not feasible and 2003 bioventing pilot test will be conducted. TCE is being monitored, and if action levels are exceeded then a permeable reactive wall will be installed for remedial purposes. The Eskimo Creek Treatment System will continue to be operated, monitored and maintained. And groundwater use restrictions will be implemented. 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. Eskimo Creek has been separated out as a separate site from the base wide IRP investigations done by CH2MHILL. Done by ADEC 12/27/91 Louis Howard Federal Facilities. This will aid in tracking remediation and scoring. Phase I site identification and HARM ranking score phase I site Number 1 "Fuel Seepage at Eskimo Creek" got a HARM score of 86. Source of seep is unidentified but may be an underground POL delivery systems, spill sites, underground storage tanks, or POL tanks 11, 12, 13, or 14 (POL tanks 11-14 are at right hand side of intersection of Storage Road and Cantonment Avenue) Any of the foregoing potential sources could also be minor or secondary sources. Latitude and Longitude is for Seep #1.

Action Information

Action Date Action Description DEC Staff
6/15/1981 Update or Other Action COE installed product recovery systems at Eskimo Creek to intercept and remove separate-phase petroleum product seeping into adjacent wetlands Former 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, Eskimo 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
10/17/1989 Notice of Violation 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. Former Staff
10/3/1990 Update or Other Action (Old R:Base Action Code = MS - Monitoring/Sampling). CH2MHILL Stage 2 IRP investigation report lists groundwater contaminated with: benzene at 1-23 ug/l, trichloroethene from 2-90 ug/l, naphthalene from 62-12,000 ug/l, 2-methylnaphthalene from 20-18,000 ug/l. Soil samples had: TPH from 4.2-47,700 mg/kg, lab analysis of soil obtained from installation of monitoring wells had TPH from 31.2-10,300 mg/kg, naphthalene detected at 8.86 and 37 mg/kg, 2-methylnaphthalene at 16-73 mg/kg. Extent of contamination at Eskimo Creek places it as the highest priority site for remediation, since this site is considered to pose the highest risk to human health and the environment. 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 type 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
12/27/1991 Site Added to Database Petroleum, chlorinated solvents, metals, naphthalene contaminants. Louis Howard
3/15/1992 Update or Other Action Report of Groundwater Monitoring Well Sampling and Analysis (dated July 31, 1992) Louis Howard
7/15/1992 Update or Other Action Remedial Investigation / Feasibility Study at Eleven Sites, final report (3 volumes, dated September 1993) Louis Howard
9/15/1992 Update or Other Action Comprehensive Site Investigation with September and October groundwater sampling programs Louis Howard
10/15/1992 Update or Other Action Report of Groundwater Monitoring Well Sampling and Analysis (dated July 1993) Louis Howard
10/15/1992 Update or Other Action Aquifer Pumping Test, Eskimo Creek Site SS11 (dated July 23, 1993) Louis Howard
10/15/1992 Update or Other Action Groundwater Monitoring Performed October 1992 (dated April 7, 1993) Louis Howard
9/1/1993 Update or Other Action (Old R:Base Action Code = FS - Feasibility Study (General)). Former Staff
12/15/1993 Update or Other Action King Salmon Air Station, Analytical Results: Private Water Wells (dated March 1, 1994) Louis Howard
3/30/1994 Site Ranked Using the AHRM Initial ranking. 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 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
6/30/1994 Update or Other Action Base-Wide 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
8/15/1995 Update or Other Action Final Seep Sampling Eskimo Creek and Naknek Sites (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 Number2 sites did not require further investigation. Louis Howard
9/8/1995 Interim Removal Action Approved IA action added by Shannon and Wilson on 3/14/97, based on Relative Risk Evaluation Worksheet dated 9/8/95. Phase listed as IRA; no other information available. S&W-Miner
12/15/1995 Update or Other Action Final Feasibility Study, Eskimo Creek Product Recovery System (dated January 1997). Feasibility Study for Eskimo Creek conducted form April to December 1995. The study evaluated remedial technology with respect to their applicability to use with the existing Eskimo Creek product recovery wells. The preferred alternative was in-well air sparging. Louis Howard
4/15/1996 Update or Other Action Installation and Systems Operation Manual for Groundwater Diversion Wall and Free Product Skimming Sump System (dated April 1996). Louis Howard
6/15/1996 Update or Other Action Final Installation-wide Environmental Baseline Survey Louis Howard
6/15/1996 Update or Other Action Final Human Food Chain, Aquatic Biota, and Wetlands Evaluation workplan Louis Howard
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
9/15/1996 Update or Other Action Evaluation of Alternatives, Treatment and Discharge of Eskimo Creek Seep Water 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
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
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
4/8/1997 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - September 1996, Eskimo Creek Seeps I and II (dated March 1996, received April 1996) Gretchen Pikul
4/8/1997 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - October 1996, Eskimo Creek Seeps I and II (dated March 1996, received April 1996) 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) and accompanying documents 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
10/30/1997 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, with a public meeting on November 19, 1997). Following two years of monitored natural attenuation investigations in 1997 and 1998, the proposed remedial action planned was revised; and an updated proposed plan was issued August 8, 2000. 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 Final King Salmon USTs Summary of UST Site Historical Information dated April 20, 1998, includes site area 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
7/7/1998 Update or Other Action Sampling Results from Eskimo Creek Treatment System (dated June 1998, received July 1998). Gretchen Pikul
7/13/1998 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - May 1998, Eskimo Creek Seeps I and II (dated June 1998, received July 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
8/20/1998 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - July 1998, Eskimo Creek Seeps I and II (dated August 1998). Gretchen Pikul
8/31/1998 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - June 1998, Eskimo Creek Seeps I and II (dated June 1998, received August 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
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
12/3/1998 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - August 1998, Eskimo Creek Seeps I and II (dated and received December 1998). Gretchen Pikul
12/3/1998 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - October 1998, Eskimo Creek Seeps I and II (dated and received December 1998). Gretchen Pikul
12/3/1998 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - September 1998, Eskimo Creek Seeps I and II (dated and received December 1998). Gretchen Pikul
1/27/1999 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - November 1998, Eskimo Creek Seeps I and II (dated and received January 1999). Gretchen Pikul
1/27/1999 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - December 1998, Eskimo Creek Seeps I and II (dated and received January 1999). Gretchen Pikul
2/24/1999 Update or Other Action Tier II Ecological Risk Assessment for Piscivorous Wildlife Inhabiting Eskimo Creek report (draft dated November 1996, final dated May 1997, received on February 1999). Prepared by Armstrong Laboratory. Gretchen Pikul
3/30/1999 Meeting or Teleconference Held Seattle meeting with trustees on fish study previous results and follow-on workplan Gretchen Pikul
4/20/1999 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - January 1999, Eskimo Creek Seeps I and II (dated February 1999, received April 1999). Gretchen Pikul
4/20/1999 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - February 1999, Eskimo Creek Seeps I and II (dated April 1999, received April 1999). Gretchen Pikul
4/20/1999 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - March 1999, Eskimo Creek Seeps I and II (dated and received April 1999). 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, system operates during warm months Gretchen Pikul
7/13/1999 Update or Other Action Intrinsic Remediation Study CG-027 (Groundwater Zone 1) 1997 Results, King Salmon Airport (draft dated January 1999, final dated June 1999) 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 Final Groundwater Monitoring Report, Groundwater Zone 1, 1997 (dated July 1999) Gretchen Pikul
8/30/1999 Proposed Plan Final Proposed Plan for Interim Remedial Action, Groundwater Zone 1 Gretchen Pikul
9/13/1999 Update or Other Action Sampling Results from Eskimo Creek Treatment System (dated September 1999). Gretchen Pikul
9/13/1999 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - June 1999, Eskimo Creek Seeps I and II (dated June 1999, received September 1999) Gretchen Pikul
11/2/1999 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - July 1999, Eskimo Creek Seeps I and II (dated October 1999, received November 1999) Gretchen Pikul
11/2/1999 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - August 1999, Eskimo Creek Seeps I and II (dated October 1999, received November 1999) Gretchen Pikul
11/2/1999 Update or Other Action Monthly Monitoring, Discharge Monitoring Report - September 1999, Eskimo Creek Seeps I and II (dated October 1999, received November 1999) Gretchen Pikul
11/18/1999 Meeting or Teleconference Held Seattle meeting with trustees on focused fish study results and recommendations on 2000 field season workplan 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 Update or Other Action 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 CERCLA ROD Approved Record of Decision for Interim Remedial Action, Site: Groundwater Zone (GWZ) 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 GWZ 1 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. SS011 Selected Remedy Floating Petroleum Product Recovery. An estimated 14,000 to 54,000 cubic feet (105,000 to 404,000 gallons) of floating petroleum product (measured in 1998) is present on the water table ~ GWZ 1. The contamination encompasses an area of approximately 410,000 square feet. Dual-phase extraction (DPE) techniques will be used to actively recover floating petroleum product to the extent practicable. The estimated timeframe for removal is 10 years (circa 2011). The vacuum applied by the DPE system will enhance monitored natural attenuation in the smear zone and dissolved-phase plume. Groundwater monitoring will occur during and after DPE system remediation. Following removal of floating petroleum product, the progress of monitored natural attenuation of the remaining dissolved-phase hydrocarbons will be evaluated. ] See site file for additional information. 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 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 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
2/14/2001 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
3/2/2001 Update or Other Action Eskimo Creek Impact Study Report (draft dated December 2000, ADEC comment letter dated March 2, 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
6/13/2001 Update or Other Action Eskimo Creek Seeps 1 and 2 Monthly Monitoring, Discharge Monitoring Report - January 2001 (dated March 15, 2001 and received on April 5, 2001; ADEC comment letter dated April 15, 2001; final dated June 13, 2001 and received in June 2001). Gretchen Pikul
6/13/2001 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - February 2001 (dated April 10, 2001; ADEC comment letter dated June 11, 2001; final dated June 13, 2001 and received in June 2001). Gretchen Pikul
6/15/2001 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - March 2001 (dated May 2, 2001; ADEC comment letter dated June 11, 2001; final dated June 15, 2001 and received in June 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
7/11/2001 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - April 2001 (draft dated June 11, 2001; ADEC comment letter dated July 11, 2001; final not received). 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
8/22/2001 Update or Other Action 2000 Limited Field Investigation at Eskimo Creek Treatment System Seeps report (draft dated December 21, 2000 and received January 2, 2001; ADEC comment letter dated March 1, 2001; final dated August 3, 2001 and received August 22, 2001 - some relatively minor comments were not incorporated into final version as stated in 'response to comments'). 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
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
11/28/2001 Update or Other Action Remedial Process Optimization Scoping Visit Report - June 26-28, 2001 (no draft received; final received September 26, 2001 - many comments and issues to be resolved; comment resolution meeting during EPA Seattle meetings November 28, 2001). Gretchen Pikul
11/29/2001 Meeting or Teleconference Held Meeting with Air Force, ADEC, and EPA at EPA Seattle office - November 26-29, 2001. Gretchen Pikul
12/5/2001 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - May 2001 (draft dated November 9, 2001 and received on November 19, 2001; ADEC comment letter dated December 5, 2001; final not received). ADEC also sent letters regarding 2 outstanding issues: Wastewater General Permit - which permit number is most appropriate for site; and Area of Concerns List for entire facility - list of AOCs to be entered into Air Force funding and included as IRP sites. Gretchen Pikul
12/11/2001 Update or Other Action 5 Eskimo Creek Treatment Facility Monthly Monitoring Reports - June through October 2001 (drafts all dated in November 2001 and received on December 7, 2001; ADEC comment letter dated December 11, 2001; final not received). 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
3/12/2002 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - November 2001 (draft dated February 5, 2002 and received on February 15, 2002; ADEC comment letter dated March 12, 2002; final not received). Gretchen Pikul
3/21/2002 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - December 2001 - draft dated February 25, 2002 and received on March 21, 2002; ADEC comment letter dated *, 2002; final not received). Gretchen Pikul
3/27/2002 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - January 2002; draft dated March 15, 2002 and received on March 27, 2002; ADEC comment letter dated *, 2002; final not received). 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
4/17/2002 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - February 2002 - draft dated April 8, 2002 and received on April 17, 2002; ADEC comment letter dated *, 2002; final not received). Gretchen Pikul
4/23/2002 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report - March 2002 - draft dated April 18, 2002 and received on April 23, 2002; ADEC comment letter dated *, 2002; final not received). Gretchen Pikul
10/9/2002 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report for May 2002 and Annual Maintenance Report for 2001-2002; draft dated September 27, 2002 and received September 30, 2002; ADEC comment letter dated October 9, 2002. Gretchen Pikul
11/6/2002 Update or Other Action Eskimo Creek Treatment Facility Monthly Report for June 2002; draft dated October 9, 2002 and received on October 23, 2002; ADEC approval letter dated November 6, 2002. Gretchen Pikul
12/5/2002 Update or Other Action Eskimo Creek Treatment Facility Monthly Report for August 2002; draft dated October 17, 2002 and received on October 23, 2002; ADEC approval letter dated December 5, 2002. 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
1/28/2003 Site Number Identifier Changed Changed Workplan from X1 to X9 to reflect presence of hazardous substances above cleanup levels. Gretchen Pikul
2/28/2003 Update or Other Action There were general wastewater permit discharge exceedences within the February monthly effluent samples at the treatment system. The filter media was changed in January and typically is effective for 4 to 6 months. The Air Force operator promptly transferred control to the backup filter system (the facility is equipped with a redundant filter system) and sent personnel to evaluate the situation. A stuck solenoid valve may have allowed the water to bypass the other filter vessels and flow directly into the organo-clay filter vessel. The monthly effluent sample and an organo-clay sample were collected for laboratory analyses on March 4. The February sample results consisted of the following: total aromatic hydrocarbons at 11.46 µg/L (10 µg/L WQS), total aqueous hydrocarbons at 12 µg/L (15 µg/L WQS), DRO at 3 mg/L (1.5 mg/L 18 AAC 75), and trichloroethene at 6.71 µg/L (5 µg/L 18 AAC 75). Gretchen Pikul
3/11/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Report for September 2002; draft dated October 23, 2002 and received March 11, 2003. Gretchen Pikul
4/11/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Report for October 2002; draft dated November 11, 2002 and received on March 11, 2003; ADEC approval letter dated April 11, 2003. Gretchen Pikul
4/11/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Report for November 2002; draft dated December 23, 2002 and received on March 11, 2003; ADEC approval letter dated April 11, 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
6/13/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Report for February 2003 (draft dated April 18, 2003 and received on May 22, 2003; ADEC approval letter dated June 13, 2003). Gretchen Pikul
6/13/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Report for March 2003 (draft dated May 12, 2003 and received on May 22, 2003; ADEC approval letter dated June 13, 2003). Gretchen Pikul
7/3/2003 Update or Other Action 2002 King Salmon Air Station Monitoring Point Inventory CD (dated June 25 and received on July 3, 2003). Gretchen Pikul
7/17/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Report for December 2002 and January 2003 (draft dated January 13 and February 11, respectively, received on July 17, 2003). Gretchen Pikul
8/28/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report for April 2003 (draft dated June 6 and received August 12, 2003; ADEC comment letter dated August 28, 2003). Gretchen Pikul
8/28/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report for May 2003 and Annual Maintenance Report for 2002-2003 (draft dated August 8 and received August 12, 2003; ADEC comment letter dated August 28, 2003). Gretchen Pikul
9/18/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report for June 2003 (draft dated August 29 and received September 12, 2003; ADEC approval letter dated September 18, 2003). Gretchen Pikul
9/18/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report for July 2003 (draft dated August 29 and received September 12, 2003; ADEC approval letter dated September 18, 2003). Gretchen Pikul
10/27/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report for August 2003 (draft dated and received in October 2003; ADEC approval letter dated October 27, 2003). Gretchen Pikul
10/29/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report for September 2003 (via e-mail and received on October 29, 2003; ADEC approval letter dated October 29, 2003). Gretchen Pikul
12/2/2003 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report for October 2003 (via e-mail and received on November 19, 2003; ADEC approval letter dated December 2, 2003). Gretchen Pikul
2/6/2004 Update or Other Action Eskimo Creek Treatment Facility Monthly Monitoring Report for December 2003; received via e-mail on February 6, 2004; effluent samples were inadvertently not submitted for analytical testing; ADEC e-mailed comments on February 6, 2004. Gretchen Pikul
4/9/2004 Update or Other Action Eskimo Creek Treatment Facility Monthly Technical Memo for January 2004; ADEC received via e-mail on March 25, 2004 and a hardcopy on April 9, 2004; no exceedences in effluent sample. Gretchen Pikul
4/15/2004 Update or Other Action Eskimo Creek Treatment Facility Monthly Technical Memo for February 2004 (dated April 9, 2004); ADEC received via e-mail on April 9, 2004; hardcopy received on April 15, 2004; no exceedences in effluent sample. 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 Ausut 8, 2003; final received April 22, 2004). Gretchen Pikul
4/30/2004 Update or Other Action Eskimo Creek Treatment Facility Monthly Technical Memorandum for March 2004 (dated April 30, 2004). Gretchen Pikul
5/26/2004 Update or Other Action Eskimo Creek Treatment Facility Monthly Technical Memorandum for April 2004 (dated April 6, 2004 and received May 26, 2004); no exceedences. 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
8/2/2004 Update or Other Action Eskimo Creek Treatment Facility Monthly Technical Memorandum for May 2004 and Annual Maintenance Report for 2003 – 2004 (dated July 20, 2004 and received August 2) ; no exceedences were detected. Gretchen Pikul
8/12/2004 Update or Other Action Eskimo Creek Treatment Facility Monthly Technical Memorandum for June 2004 (dated July 29, and received on August 12, 2004); no exceedences. 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
9/1/2004 Update or Other Action Eskimo Creek Treatment Facility Monthly Technical Memorandum for July 2004; dated August 20, and received on September 1, 2004; no exceedences. Gretchen Pikul
10/1/2004 Update or Other Action Eskimo Creek Treatment Facility Monthly Technical Memorandum for August 2004; dated September 27, 2004 and received on October 1; no exceedences. 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 2569.38.015.02. Aggie Blandford
4/15/2008 Site Visit ADEC staff conducted a site visit to a large number of pertinent sites at King Salmon Air Station over a 3 day visit. Sites were inspected for any visible evidence of contamination and potential sampling locations. ADEC staff was accompanied to all of the sites by the Project managers from the USAF and thier contractors. A RAB meeting was held during the site visit. Jonathan Schick
4/15/2008 Update or Other Action ADEC staff participated in a Restoration Advisory Board meeting at the King Salmon Air Station. Community members are encouraged to attend and view a presentation of the most recent sampling program where data is available. Main topics discussed were the TCE plume that is in Groundwater Zone 1 where a treatibility study is being conducted to see the possible influence of adding an enhanced in-situ bioremediation product that is engineered to break down chlorinated solvents. The other main topic discussed was the results from the basewide monitoring event at all of the Groundwater Zones from 2007. Jonathan Schick
10/13/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 71511 name: auto-generated pm edit King Salmon Air Station SS11 Jonathan Schick
10/13/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78280 name: AST Tanks Jonathan Schick
10/21/2008 Site Visit ADEC staff took part in a site visit to a number of pertinent sites at King Salmon Air Station over a 2 day visit. Sites, especially the pending Multi Site Inspection sites, were inspected for any visible evidence of contamination and potential sampling locations as the work plans are still being formulated. ADEC staff was accompanied to all of the sites by the Project managers from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, a discussion of the Multi-SIte inspection project, an update on the status of the Groundwater Zone 5 Records of Decision, and a brief discussion concerning the TCE treatibility Study in Groundwater Zone 1. The next RAB meeting has been tentatively scheduled for April 21, 2009. Jonathan Schick
4/21/2009 Update or Other Action ADEC staff conducted a site visit to pertinent sites at King Salmon Air Station over a 2 day visit. Sites were inspected for any visible evidence of contamination and to become more familiar with the layout and topography of the area. ADEC staff was accompanied to all of the sites by the Project manager from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, a discussion of the Multi-Site inspection project which is entering Phase II this summer, an update on the status of the Groundwater Zone 5 Records of Decision, and a brief discussion concerning the TCE treatibility Study in Groundwater Zone 1. The next RAB meeting has been tentatively scheduled for October, 2009. Jonathan Schick
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
10/20/2010 Update or Other Action ADEC staff conducted a site visit to pertinent sites at King Salmon Air Station over a 2 day visit. Sites were inspected for any visible evidence of contamination and to observe some of the work that is being conducted to remove POL impacted soils and PCB impacted soils at OT010. ADEC staff was accompanied to all of the sites by the Project manager from the USAF and thier contractors. A Restoration Advisory Board meeting was held during the site visit. The topics discussed included the most recent basewide monitoring program, remedial action cleanup programs, and management of the IDW and soil in the biocells set up to add oxygen to the soil matrix to aid the degradation of the petroleum hydrocarbons. The next RAB meeting is scheduled for April 2011. Jonathan Schick
4/14/2011 Document, Report, or Work plan 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 Document, Report, or Work plan Review - other Contaminated Sites Staff submitted a letter to the AIr Force's Remedial Project Manager for King Salmon approving the Work Plan for Monitoring Well Decommissioning and Repair across the King Salmon Installation. The work is scheduled to be conducted in July of 2011. 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 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 Document, Report, or Work plan 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
12/15/2016 Update or Other Action Groundwater monitoring at this site is ongoing and captured in the basewide groundwater monitoring reports documented under the Zone 1 site (Haz ID 2628). Holly Weiss-Racine
2/24/2017 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, therefore any follow-up actions mentioned in this ROD should be considered recommendations not requirements. A records search at the ADNR Recorder’s Office – Kvichak District did not identify the recording of any LUCs into public land records for non-USAF owned properties (ADNR, 2016). Therefore, not all of the components of the LUCs needed have been implemented. Remedial Actions (RAs) were performed at the free product seeps at Eskimo Creek to evaluate product recovery options. A bioventing system (Bio4X) was installed upgradient of Seep 1 in place of the active product recovery systems that were tested. Remedial action objectives (RAOs) of the selected remedy included meeting location- and action-specific applicable or relevant and appropriate requirements (ARARs) and contamination-specific ARARs within 25 years. See site file for additional information. Louis Howard
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
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
12/18/2018 CERCLA Proposed Plan ADEC received the Draft Proposed Plan for King Salmon Divert, Site OT027, Groundwater Zone 1, on November 7, 2018. This proposed plan details site characterization and history, summarizes site risks, outlines remedial action objectives, and evaluates seven remedial alternatives. ADEC's comments on the draft plan were sent on this date. Sammi Castle
8/28/2020 Document, Report, or Work plan Review - other ADEC approved the Final 2019 Remedial Action Operations & Land Use Control Inspections, King Salmon Divert, Alaska, dated August 2020. Monitoring and recovering product at Seeps 1 and 2 was conducted on August 9, 2019. A total of ~0.30 L of product was removed from five product probes at Seep 1. One other product probe in Seep 1 had a measurable amount of product, while the remaining thirteen product probes in Seep 1 and all nine in Seep 2 did not. Ginna Quesada
6/8/2021 Document, Report, or Work plan Review - other ADEC reviewed and approved the 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. Monitoring/recovering product at Seeps 1 and 2 was conducted on September 12, 2020. A total of ~50 mL of product was removed from one product probe at Seep 1. Two other Seep 1 product probes had measurable amounts of product, while the remaining fifteen Seep 1 product probes and all nine product probes in Seep 2 did not. 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, dated August 2022. Monitoring/recovering product at Seeps 1 and 2 was discontinued in 2021, and most of the product probes were decommissioned. Product recovery had decreased from a high of 3.2 liters removed from six Seep 1 product probes in 2009, to 0.05 liters removed from one Seep 1 product probe in 2020. An institutional control (IC) inspection was performed to verify that no drinking water wells have been installed in the A or B Aquifers with no observations of IC noncompliance. Ginna Quesada
5/16/2023 Document, Report, or Work plan Review - other DEC reviewed and submitted comments regarding the Uniform Federal Policy Quality Assurance Project Plan Supplemental Remedial Investigations: Groundwater Zone 1 (OT027), Fuel Seepage- Eskimo Creek (SS011), and POL Tanks 11, 12, 13, and 14 (SS015) and Site Characterization of Wastewater Lagoon Releases, Draft, dated April 2023. The work plan describes the procedures and methods to conduct field investigations for the Fuel Seepage Eskimo Creek (SS011), POL Tanks 11, 12, 13, and 14 (SS015), and Wastewater Lagoon sites located in Groundwater Zone 1 in King Salmon, Alaska. The goal of the proposed work is to resolve existing data gaps from previous investigations and define the nature, extent, and risk associated with existing contamination at the sites. Ginna Quesada
5/18/2023 Site Visit DEC conducted a site visit with the U.S. Air Force. Ginna Quesada
6/22/2023 Document, Report, or Work plan Review - other DEC provided responses to comments for the Uniform Federal Policy Quality Assurance Project Plan Supplemental Remedial Investigations: Groundwater Zone 1 (OT027), Fuel Seepage- Eskimo Creek (SS011), and POL Tanks 11, 12, 13, and 14 (SS015) and Site Characterization of Wastewater Lagoon Releases, Draft, dated April 2023. Ginna Quesada
6/28/2023 Document, Report, or Work plan Review - other DEC approved the Uniform Federal Policy Quality Assurance Project Plan Supplemental Remedial Investigations: Groundwater Zone 1 (OT027), Fuel Seepage- Eskimo Creek (SS011), and POL Tanks 11, 12, 13, and 14 (SS015) and Site Characterization of Wastewater Lagoon Releases, Final, dated June 2023. 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
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