Site Report: Galena AFS/Airport - CG001/CG002 MGH/MSA

Site Name:	Galena AFS/Airport - CG001/CG002 MGH/MSA
Address:	West Side of Main Airport, Galena, AK 99741
File Number:	860.38.002
Hazard ID:	1416
Status:	Active
Staff:	Tim Sharp, 9074512131 tim.sharp@alaska.gov
Latitude:	64.740368
Longitude:	-156.960706
Horizontal Datum:	WGS84

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

Site Chronology
IC / Closure Details
Documents
Associated Sites

Problems/Comments

On 4/3/91 ADEC was informed that two one-million gallon underground storage tanks (one diesel, one JP-4 jet fuel) had failed tank tightness testing. Tanks #37 and #38 were unregulated underground storage tanks classified as field tanks. Tracer gas was detected in a soil gas probe adjacent to tank at a depth of five feet. The tanks have since been emptied of product and abandoned in place. The tanks were used on site for thirty-four years. Additional contamination likely resulted from ground disposal of sludge cleaned from the tanks and water drained from the tank bottoms. Above ground storage tanks holding JP-8 jet fuel have replaced the abandoned USTs. Air Force Installation Restoration Program Sites: Million Gallon Hill (CG001) and Missile Storage Area (CG002). The two IRP sites are believed to have common contamination sources, and are therefore treating as one site commonly referred to as Million Gallon Hill. Free-phase product and dissolved petroleum constituents above cleanup levels have been documented in monitoring wells downgradient of the tanks. Periodic free product recovery was conducted over the 1990s. The current remedial strategy is bioventing. --Updated 2011-- In August 2010 a field sampling plan for Million Gallon Hill and Missile Storage Area was developed. Million Gallon Hill was identified as a candidate for the site characterization pathway. The goal of the site characterization pathway is to characterize the lateral and vertical extend of the contamination. This plan was approved in 2011, and sampling was expected to begin during the summer of 2011. Data from this sampling event will be available following the 2011 field season. Missile Storage area is also on the site characterization pathway. Sampling for this area is expected to beging during the 2011 field season.

Action Information

Action Date	Action	Description	DEC Staff
4/15/1991	Site Added to Database	Hydrocarbon soil contamination.	Former Staff
7/13/1991	Leaking Underground Storage Tank Corrective Action Underway	(Old R:Base Action Code = LCAR - Corrective Action Review (LUST)). Air Force requested clarification regarding requirement for site assessment and corrective action per 18 AAC 78. Noland determined that site assessment was conducted in 1991 and further corrective action has been conducted since under the Installation Restoration Program (IRP) which satisfies 18 AAC 78.200 - 78.270.	Laura Noland
8/13/1991	Update or Other Action	(Old R:Base Action Code = FI - Field Inspection (General)). ADEC staff observed site investigation activities by Environmental Science and Engineering, Inc. Two monitoring wells were installed, one of the wells exhibited a very strong diesel odor. Five monitoring wells have been installed, three of which have possible petroleum contamination. Site assessment work at Galena will continue for another week.	Kalu Kalu
12/20/1991	Update or Other Action	(Old R:Base Action Code = MS - Monitoring/Sampling). ADEC was informed by the Air Force of possible leak in tank 37 which presently contains diesel fuel.	Former Staff
2/27/1992	Update or Other Action	(Old R:Base Action Code = SI - Site Investigation). Staff reviewed Monitoring Well and Borehole Report on Underground Storage Tanks 37,38, and 49 at Galena Airport commissioned by Air Force, report dated 2/10/92. TPH and BTEX contamination found in monitoring wells above cleanup levels. Plume not sufficiently defined; almost 1 foot floating product found.	Laura Noland
3/31/1992	Update or Other Action	(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Sent comments regarding summer 1992 workplan at site. Requested workplan before any free product recovery work begin and that API/EPA Consensus Methods be used.	Laura Noland
5/6/1992	Update or Other Action	(Old R:Base Action Code = RECN - Site Reconnaissance (CS)). Noland and Kalu conducted site visit at Million Gallon Hill with contractor and Air Force. Reviewed site investigation plans and discussed state requirements with RP.	Laura Noland
7/8/1992	Update or Other Action	(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Reviewed and sent comments regarding IRP Stage 3 Sampling and Analysis Plan and Work Plan for Campion and Galena AFS. Perimeter Drum site removed from this year's work season and Vehicle Maintenance Building Area added to work plan. million gallon tanks added to IRP work plan and included in West Unit area of investigation.	Laura Noland
12/15/1992	Update or Other Action	(Old R:Base Action Code = CORR - Correspondence (General)). Requested present status of ADEC request for leak detection for Tank 37 to be completed by 11/1/92.	Laura Noland
12/30/1992	Update or Other Action	(Old R:Base Action Code = CORR - Correspondence (General)). 11th CEOS faxed volumetric testing results for Tank 37 which were completed on 8/11/92. Tank passed test.	Former Staff
2/16/1993	Update or Other Action	(Old R:Base Action Code = RI - Remedial Investigation). ADEC received preliminary sampling results from Remedial Investigation work accomplished in 1992. Initial results show extensive groundwater and soil contamination. Primary contaminant appears to be POLs.	Former Staff
7/13/1993	Proposed Plan	Reviewed and approved closure plans for Tank 38, to be closed in placed.	Laura Noland
9/15/1993	Update or Other Action	(Old R:Base Action Code = CP - Closure Pending). Received closure notice for UST Number 38, a 1 Million gallon tank known to have leaked in the past. Closure in place.	Laura Noland
11/15/1993	Site Ranked Using the AHRM	Reranked.	Former Staff
4/1/1994	Update or Other Action	(Old R:Base Action Code = CORR - Correspondence (General)). Tank 38 was closed in placed per Tank 38 Closure report. ADEC agreed with closure. Contamination in area to be addressed through IRP program as the West Unit.	Laura Noland
5/27/1994	Update or Other Action	(Old R:Base Action Code = RPL2 - Site Information Request Letter). ADEC staff sent PRP-CS Database Notification Letter to RP requesting update and more environmental information concerning contaminated site.	Jeff Peterson
2/21/2003	Update or Other Action	Bioventing systems were installed at this site in the mid-90's. THese systems were operated periodically, but not properly maintained or monitored. In 2002 work was completed by an Air Force contractor to evaluate the systems. Further characterization of the soil and g.w. were completed. Groundwater concentrations still exceed cleanup levels. The bioventing systems will be overhauled in 2003 and continue to be operated. WElls will be installed downgradient to assess contaminant migration from the site.	Ann Farris
9/17/2003	Update or Other Action	Staff received the Draft Remedial Investigation/Feasibility Study Work Plan for Galena Airport. Staff has begun review of the document. A comment resolution/technical project team meeting is scheduled October 2-3rd in Anchorage. This work plan is intended to address the many outstanding site characterization issues that were raised by Louden Tribal Council, the Environmental Protection Agency, and ADEC as well as the Remedial Process Optimization Evaluation completed in 2002.	Ann Farris
1/22/2004	Meeting or Teleconference Held	Staff attended the 7th Galena Technical Project Team Meeting on January 12 through 15th. We discussed most of the contaminated sites at the Galena Air Force Station and the Campion Radio Relay Station. We evaluated the adequacy of the historical site characterization, the need for further characterization, possible remedial options, the adequacy of exiting remediation systems, and the need for a risk assessment. Of the 23 sites reviewed at the meeting, 5 are closed already by ADEC, 5 are believed to not need any further characterization or remediation. The remaining 13 need additional investigation or remediation of some type. Additionally, there are a few sites that were not covered during this meeting that will still need to be reviewed. Million Gallon Hill - The site is pretty well characterized. There is still a question about possible migration to the northwest. Further groundwater monitoring under the RI will assess that possible migration pathway. In addition, the performance of the existing bioventing systems will be evaluated under the RI. There will be an evaluation of remedial alternatives for the groundwater contamination under the RI as well.	Ann Farris
4/19/2004	Meeting or Teleconference Held	Staff participated in the 9th Galena Technical Project Team meeting on April 19th. The meeting was between representatives of the Air Force, Louden Tribal Council, City of Galena, Galena City School District, and the Alaska Department of Environmental Conservation. The primary objective of this meeting was to complete comment resolution on the the Draft Final Remedial Investigation/Feasibility Study Work Plan. The team did ultimately come to resolution on the work plan and the final version is expected out by mid-May.	Ann Farris
8/30/2004	Meeting or Teleconference Held	11th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
10/21/2004	Meeting or Teleconference Held	Galena RAB meeting. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
11/5/2004	Meeting or Teleconference Held	12th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
11/19/2004	Meeting or Teleconference Held	Attended a week long meeting in San Antonio, Texas to participate in the formulation of an outline for the Galena Airport and Campion Air Station Remedial Investigation/Feasibility Study (RI/FS).	Colin Craven
1/12/2005	Update or Other Action	Submitted comments to the Air Force to finalize the 2004 Site Recommendations for the upcoming Remedial Investigation report. The 2004 Site Recommendations were produced during the November 2004 meetings in San Antonio, Texas.	Colin Craven
1/28/2005	Meeting or Teleconference Held	Galena RAB meeting. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
1/28/2005	Meeting or Teleconference Held	13th Galena Technical Project Team in Galena. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
3/18/2005	Update or Other Action	Comment resolution between DEC and the Air Force has been achieved on the draft Human Health Risk Assessment Work Plan for the Galena Airport and Campion Air Station. The Air Force contractors are currently finalizing the work plan.	Colin Craven
4/19/2005	Meeting or Teleconference Held	14th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
4/26/2005	Meeting or Teleconference Held	Galena RAB meeting. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
5/13/2005	Meeting or Teleconference Held	15th Galena Technical Project Team meeting in Galena. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
6/9/2005	Meeting or Teleconference Held	16th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
7/20/2005	GIS Position Updated	Updated the location of the tank farm; interpolated from USGS quadrangle map.	Colin Craven
8/30/2005	Meeting or Teleconference Held	17th Galena Technical Project Team in Galena. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
10/12/2005	Meeting or Teleconference Held	Galena RAB meeting. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
10/20/2005	Meeting or Teleconference Held	18th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
1/3/2006	Update or Other Action	DEC received the draft Remedial Investigation and Feasibility Study. The Air Force is proposing to continue air injection bioventing to address petroleum contaminated soils, and additional installation of monitoring wells to better delineate the resultant groundwater plume. Long term monitoring and land use controls would be an integral part of the remedy. DEC comments will be submitted in February.	Colin Craven
1/26/2006	Meeting or Teleconference Held	19th Galena Technical Project Team in Galena. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
3/7/2006	Update or Other Action	The draft risk assessment found no unacceptable risk for this site, so no feasibility study was conducted. The Air Force has proposed air injection bioventing, long term groundwater monitoring (LTM) and land use controls (LUCs) until residual contamination has attenuated to Method 2 cleanup levels. DEC can not agree with the adequacy of the remedy until comments on the draft risk assessment are resolved.	Colin Craven
3/14/2006	Meeting or Teleconference Held	20th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
6/1/2006	Site Characterization Workplan Approved	The Air Force and DEC came to agreement on a work plan for monitoring well installation and sampling that will serve to fill data gaps identified during the recent remedial investigation. Two monitoring wells with screened intervals below the top portion of the aquifer will be installed to better delineate the vertical distribution of the petroleum contamination. One well will be at the “mid-plume” and the other at the farthest downgradient edge of the plume; these new wells will help establish a sufficient network for long-term monitoring.	Colin Craven
6/20/2006	Meeting or Teleconference Held	21st Galena Technical Project Team in Galena. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
10/6/2006	Meeting or Teleconference Held	22nd Galena Technical Project Team meeting in Anchorage. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
11/17/2006	Meeting or Teleconference Held	23rd Galena Technical Project Team meeting in Fairbanks. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
11/17/2006	Update or Other Action	Two deeper interval monitoring wells were installed in summer 2006. 09-MW-29 was installed at the southern base of Million Gallon Hill, adjacent to a shallow monitoring well that had been showing non-detection for BTEX compounds. 09-MW-30 was installed farther downgradient of the hill, to the west and deeper than other wells that had previously served as sentry wells. Both 09-MW-29 and 09-MW-30 showed significantly higher benzene concentrations than the nearby shallow wells (43 and 110 micrograms per liter, respectively). Because of these new findings, it is no longer clear whether or not the plumes emanating from Million Gallon Hill and the Missile Storage are reaching the Yukon River.	Colin Craven
1/18/2007	Meeting or Teleconference Held	24th Galena Technical Project Team meeting in Anchorage. See the "Galena AFS - Sitewide" listing for more details.	Colin Craven
9/1/2010	Site Visit	Site visit	Amanda Loomis
2/15/2011	Meeting or Teleconference Held	TPT meeting, site discussed	Fred Vreeman
4/15/2011	Meeting or Teleconference Held	TPT meeting, site discussed	Fred Vreeman
5/5/2011	Meeting or Teleconference Held	TPT meeting, site discussed	Fred Vreeman
5/25/2011	Site Characterization Workplan Approved	CG001/CG002 approval of SC workplan	Fred Vreeman
5/25/2011	Conceptual Site Model Submitted	TPT meeting, site discussed	Fred Vreeman
6/9/2011	Site Visit	Site visit, field work audit	Fred Vreeman
6/16/2011	Site Visit	Site visit, field work audit	Amanda Loomis
6/21/2011	Meeting or Teleconference Held	TRIAD meeting, 2011 sample data discussed	Fred Vreeman
7/8/2011	Exposure Tracking Model Ranking	Initial ranking with ETM completed for source area id: 72394 name: auto-generated pm edit Galena AFS - Million Gal. Hill CG01	Amanda Loomis
7/27/2011	Update or Other Action	Draft Final Optimization Study and Response to Comments submitted by USAF	Fred Vreeman
8/4/2011	Update or Other Action	Revised CG001 sample depths approved	Fred Vreeman
8/9/2011	Update or Other Action	09MW05 Decommissioning approved	Fred Vreeman
9/15/2011	Update or Other Action	Conditional approval of the Field Sampling Plan for Million Gallon Hill was given. The conditional approval states: 1) that additional work tasks may be required to reach complete characterization of the site. 2) Prior to preparing a Site Characterization report, an additional workplan will be required that analyzes the results of investigation and identifies data gaps and will include a feasibility study.	Dennis Shepard
9/27/2011	Meeting or Teleconference Held	TRIAD meeting held. Site discussed. DEC approves installation of 2 well clusters (CG001-MW004 and CG001-MW005).	Dennis Shepard
10/20/2011	Meeting or Teleconference Held	TRIAD Meeting Held. Site discussed. One Soil stepout CG001_GP028 to the south of TCE exceedances at GP019 was approved.	Dennis Shepard
5/18/2012	Document, Report, or Work plan Review - other	DEC received the Draft Site Characterization results report for the Site.	Dennis Shepard
10/16/2012	Document, Report, or Work plan Review - other	DEC provided review comments for the Draft Site Characterization results report.	Dennis Shepard
11/8/2012	Meeting or Teleconference Held	A meeting was conducted with DEC contractor Shannon and Wilson to identify all remaining data gaps in the site characterization for all Galena Sites including CG001/CG002.	Dennis Shepard
6/18/2013	Document, Report, or Work plan Review - other	DEC received a Draft Final version of the Site Charaterization results report for the Site.	Dennis Shepard
6/26/2013	Document, Report, or Work plan Review - other	DEC provided review comments for the Draft Final version of the Site Charaterization results report for the Site.	Dennis Shepard
7/22/2013	Meeting or Teleconference Held	A teleconference call was held to resolve final issues on the Site Characterization results report for the Site. All issues were resolved.	Dennis Shepard
9/24/2013	Document, Report, or Work plan Review - other	DEC received a Final version of the Site Characterization results report for the Site.	Dennis Shepard
10/3/2013	Site Characterization Report Approved	The Site Characterization results report for the Site is approved.	Dennis Shepard
6/24/2014	Site Characterization Workplan Approved	DEC approved the 2013 Supplemental Site Characterization (SC) Sampling Plan, Former Galena Forward Operating Location (FOL), Galena, Alaska. This additional sampling was agreed to during a November 2012 Galena Data Gaps meeting.	Dennis Shepard
9/4/2014	Site Characterization Report Approved	DEC approved the Supplemental Site Characterization Results Report, Million Gallon Hill (Site CG001) and Missile Storage Area (Site CG002), Former Galena Forward Operating Location (FOL), Alaska. DEC/Air Force - comment/response and documentation of the agreements for a supplemental site characterization are documented in the approval letter (DEC_approval_CG001_CG002_df_suppSC_082014).	Dennis Shepard
11/24/2014	Site Characterization Report Approved	DEC approved the Addendum Site Characterization Results Report for this site. The purpose of the addendum was to address requirements for an SC Report under 18 AAC 75.335 (c) (DEC, 2012), specifically, to propose cleanup levels and remedial techniques for the site.	Monte Garroutte
11/28/2014	Risk Assessment Report Approved	DEC approved the Screening Level Ecological Risk Assessment (SLERA) for Million Gallon Hill and Missile Storage Area, (Sites CG001 & CG002). The report concluded there were no unacceptable ecologic risks.	Dennis Shepard
10/26/2016	Update or Other Action	Met with the CH2M project manager and a representative from Directed Technologies Drilling (DTD)while in Galena Alaska for a restoration advisory board meeting. The DTD engineer presented a video of the horizontal directed drilling project that is being planned to install a horizontal well/ sparging system at the CG001 site.	Dennis Shepard
10/26/2016	Meeting or Teleconference Held	A restoration Advisory board meeting was held in Galena Alaska to discuss the general and specific status of site investigations and cleanup at Galena.	Dennis Shepard
3/30/2017	Cleanup Plan Approved	DEC provided approval for the Subsurface Aeration (Horizontal Well) Cleanup Plan for Sites CG001, CG002, CB001, and Southern ST005.	Dennis Shepard
5/3/2018	Document, Report, or Work plan Review - other	DEC approved the Subsurface Aeration (Horizontal Well) Construction Completion Report for Sites CG001, CG002, CB001, and Southern ST005, Former Galena Forward Operating Location, Alaska.	Dennis Shepard
5/3/2018	Document, Report, or Work plan Review - other	DEC approved the Subsurface Aeration (Horizontal Well)Construction Completion Report for Sites CG001, CG002, CB001, and Southern ST005, Former Galena Forward Operating Location, Alaska.	Dennis Shepard
8/8/2018	Site Visit	DEC conducted a site visit at the Former Forward Operating Location in Galena, AK on August 8-9, 2018. A photo log is available in DEC's electronic file.	Jamie McKellar
10/29/2018	Site Visit	On October 23, 2018, DEC participated in the Technical Project Team (TPT) meeting with representatives from USAF and ADOT&PF. A site visit with inspections of each site was conducted the following day (10/24/2018) in Galena, as well as a regional advisory board (RAB) meeting with members of the community and other interested parties.	Jamie McKellar
4/5/2019	Site Visit	On April 2, 2019, DEC staff participated in a Technical Project Team meeting with representatives from USAF, Parsons, CH2M, and ADOT. The TPT meeting was held at the Fairbanks DEC office. On April 3-4, 2019, DEC staff traveled to Galena to participate in meetings with the City Mayor & RAB chair to discuss community concerns about site cleanup; a Proposed Plan meeting for Site DP023, and a community regional advisory board (RAB) meeting to discuss fieldwork completed during the 2018 field season and upcoming 2019 fieldwork. Site visits were also conducted.	Jamie McKellar
10/4/2019	Exposure Tracking Model Ranking	Initial ranking with ETM completed for source area id: 80500 name: Site CG002 - Missile Storage Area	Jamie McKellar
10/23/2019	Meeting or Teleconference Held	On October 22, 2019, DEC participated in the Technical Project Team (TPT) meeting with representatives from USAF and ADOT&PF. A site visit was conducted the following day (10/23/2019) in Galena, as well as a regional advisory board (RAB) meeting with members of the community and other interested parties.	Jamie McKellar
10/30/2019	Document, Report, or Work plan Review - other	REPORT APPROVAL: Final Performance Monitoring Report (CH2M Hill Sites) for Sites ST020, SS005, CST014, CST011 Area 2, TU001, CG001, CG002, CB001 and Southern ST005, Former Galena Forward Operating Location, Alaska (CH2M, October 2019)	Jamie McKellar
3/5/2020	Update or Other Action	Site CG002 has been administratively closed based on the following: 1) There is no known source of contamination at Site CG002, and 2) Subsurface soil and groundwater contamination at Site CG002 has been attributed to the larger, upgradient site, Million Gallon Hill ([MGH], Site CG001). DEC tracks CG001 and CG002 as a single site: Galena AFS/Airport - CG001/CG002 MGH/MSA, Hazard ID 1416, and File No. 860.38.002. This site will remain open in DEC’s Contaminated Sites Database until Cleanup Complete is reached for Site CG001.	Jamie McKellar
5/21/2020	Document, Report, or Work plan Review - other	REPORT APPROVAL: 2019 Performance Monitoring Report (CH2M Hill Sites) for Sites ST020, SS005, CST014, CST011 Area 2, TU001, CG001, CG002, CB001, Southern ST005, and ST005 Area C (CH2M, May 2020)	Jamie McKellar
5/3/2021	Document, Report, or Work plan Review - other	WORK PLAN APPROVED: Final 2021 Remedial Process Optimization Work Plan (Sites CG001, CST011 Area 2, CST014, SS005, ST005 Area C, Southern ST005, and TU001), Former Galena Forward Operating Location, Alaska (CH2M, April 2021)	Jamie McKellar
5/3/2021	Document, Report, or Work plan Review - other	REPORT APPROVED: Final Data Quality Assessment, November 2019 – October 2020, Soil Vapor Monitoring for Sites CG001, CST014, SS005, ST005 Area C, Southern ST005, and TU001 (CH2M, April 2021)	Jamie McKellar
5/3/2021	Document, Report, or Work plan Review - other	REPORT APPROVED: Final Data Quality Assessment, September – October 2020 Groundwater Monitoring at Sites CG001, CST011, CST014, SS005, Southern ST005, ST005 Area C, and TU001.	Jamie McKellar
6/28/2021	Update or Other Action	A cleanup complete with ICs determination was issued for Site SS025, which is located southeast of Million Gallon Hill. Institutional controls for groundwater associated with Site CG001, located beneath Site SS025, will remain in place and will be monitored as part of Site CG001. The removal of institutional controls on Site SS025 will be considered when groundwater contamination associated with Site CG001 has achieved Table C CULs. See the Attachments under Site SS025 (Hazard ID 26192) for more information.	Jamie McKellar
11/30/2021	Document, Report, or Work plan Review - other	TECHNICAL MEMORANDUM APPROVAL: Final 2021 Remediation System and Well Decommissioning and Replacement (Sites CG001, CSS002, SS025, ST005, ST020, and TU001), CH2M/Jacobs, November 2021	Jamie McKellar
6/29/2022	Meeting or Teleconference Held	CS Staff attended a presentation by USAF contractors CH2M and Parsons regarding sample results obtained with submersible pumps and Passive Diffusion Bags (PDBs).	Jamie McKellar
1/31/2023	Document, Report, or Work plan Review - other	WORK PLAN ADDENDUM APPROVAL: 2022 Remedial Process Optimization Work Plan Addendum (Sites CG001, CST011 Area 2, CST014, SS005, ST005 Area C, Southern ST005, and TU001).	Jamie McKellar
8/31/2023	Document, Report, or Work plan Review - other	WORK PLAN APPROVAL: Final 2023 Data Collection Sampling Plan (Sites SS005, CST014, CST011 Area 2, TU001, CG001, Southern ST005, and ST005 Area C), Former Galena Forward Operating Location, Alaska (CH2M, August 29, 2023)	Jamie McKellar
11/15/2023	Site Visit	DEC, DOT, USAF, and contractors met at the Fairbanks DEC office on May 2, 2023 for a Technical Project Team meeting. The following day a site visit and Regional Advisory Board (RAB) meeting were held in Galena. Meeting minutes for the TPT and RAB meetings were approved on November 15, 2023.	Jamie McKellar
11/16/2023	Long Term Monitoring Workplan or Report Review	REPORT APPROVED: Data Quality Assessment 2022 Groundwater Monitoring for Sites CG001, CST011, CST014, SS005, ST005 Area C, Southern ST005, and TU001, Former Galena Forward Operating Location, Alaska (CH2M, October 2023)	Jamie McKellar
11/20/2023	Long Term Monitoring Workplan or Report Review	REPORT APPROVED: Remedial Process Optimization Report (Sites CG001, CST011 Area 2, CST014, SS005, ST005 Area C, Southern ST005, and TU001), Former Galena Forward Operating Location, Alaska (CH2M, November 2023)	Jamie McKellar
11/20/2023	Update or Other Action	REPORT APPROVED: Data Quality Assessment 2021 Groundwater Monitoring for Sites ST005 Area C, Southern ST005, SS005, CG001, CST011, CST014 and TU001 (CH2M, May 2022)	Jamie McKellar
11/20/2023	Update or Other Action	REPORT APPROVED: Data Quality Assessment October 2021 Soil Sampling for Sites ST005 Area C, SS005, CG001, and CST011 (CH2M, May 2022)	Jamie McKellar
4/23/2024	Meeting or Teleconference Held	CS staff participated in the biannual Technical Project Team (TPT) meeting with representatives from USAF BRAC, Parsons, Jacobs/CH2M Hill, and EA Engineering. The meeting was held at the EA Engineering office in Anchorage, AK.	Jamie McKellar
6/24/2024	Document, Report, or Work plan Review - other	DEC reviewed and supplied comments to the USAF regarding the Performance Monitoring Report (PMR), which presents results of the Fiscal Year (FY) 2023 performance monitoring of remediation systems at the Former Galena Forward Operating Location (FOL). During FY 2023, the Air Force Civil Engineer Center (AFCEC) conducted air sparging, soil vapor extraction, and vapor intrusion mitigation systems operations, along with groundwater monitoring. The report details recommendations for future remedial actions, including continued monitoring and operations of soil cleanup systems.	Tim Sharp
6/27/2024	Document, Report, or Work plan Review - other	DEC approved multiple data quality assessment reports for soil, soil vapor, groundwater, and sediment. Reports were submitted by Parsons and CH2M/Jacobs. Approval letter is dated 6/27/2024.	Jamie McKellar
7/11/2024	Document, Report, or Work plan Review - other	DEC Approved the Final 2023 Performance Monitoring Report for Sites SS005, CST014, CST011 Area 2, TU001, CG001, Southern ST005, and ST005 Area C, Former Galena Forward Operating Location on this date.	Tim Sharp

Action Date

Action

Description

DEC Staff

4/15/1991

Site Added to Database

Hydrocarbon soil contamination.

Former Staff

7/13/1991

Leaking Underground Storage Tank Corrective Action Underway

(Old R:Base Action Code = LCAR - Corrective Action Review (LUST)). Air Force requested clarification regarding requirement for site assessment and corrective action per 18 AAC 78. Noland determined that site assessment was conducted in 1991 and further corrective action has been conducted since under the Installation Restoration Program (IRP) which satisfies 18 AAC 78.200 - 78.270.

Laura Noland

8/13/1991

Update or Other Action

(Old R:Base Action Code = FI - Field Inspection (General)). ADEC staff observed site investigation activities by Environmental Science and Engineering, Inc. Two monitoring wells were installed, one of the wells exhibited a very strong diesel odor. Five monitoring wells have been installed, three of which have possible petroleum contamination. Site assessment work at Galena will continue for another week.

Kalu Kalu

12/20/1991

Update or Other Action

(Old R:Base Action Code = MS - Monitoring/Sampling). ADEC was informed by the Air Force of possible leak in tank 37 which presently contains diesel fuel.

Former Staff

2/27/1992

Update or Other Action

(Old R:Base Action Code = SI - Site Investigation). Staff reviewed Monitoring Well and Borehole Report on Underground Storage Tanks 37,38, and 49 at Galena Airport commissioned by Air Force, report dated 2/10/92. TPH and BTEX contamination found in monitoring wells above cleanup levels. Plume not sufficiently defined; almost 1 foot floating product found.

Laura Noland

3/31/1992

Update or Other Action

(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Sent comments regarding summer 1992 workplan at site. Requested workplan before any free product recovery work begin and that API/EPA Consensus Methods be used.

Laura Noland

5/6/1992

Update or Other Action

(Old R:Base Action Code = RECN - Site Reconnaissance (CS)). Noland and Kalu conducted site visit at Million Gallon Hill with contractor and Air Force. Reviewed site investigation plans and discussed state requirements with RP.

Laura Noland

7/8/1992

Update or Other Action

(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Reviewed and sent comments regarding IRP Stage 3 Sampling and Analysis Plan and Work Plan for Campion and Galena AFS. Perimeter Drum site removed from this year's work season and Vehicle Maintenance Building Area added to work plan. million gallon tanks added to IRP work plan and included in West Unit area of investigation.

Laura Noland

12/15/1992

Update or Other Action

(Old R:Base Action Code = CORR - Correspondence (General)). Requested present status of ADEC request for leak detection for Tank 37 to be completed by 11/1/92.

Laura Noland

12/30/1992

Update or Other Action

(Old R:Base Action Code = CORR - Correspondence (General)). 11th CEOS faxed volumetric testing results for Tank 37 which were completed on 8/11/92. Tank passed test.

Former Staff

2/16/1993

Update or Other Action

(Old R:Base Action Code = RI - Remedial Investigation). ADEC received preliminary sampling results from Remedial Investigation work accomplished in 1992. Initial results show extensive groundwater and soil contamination. Primary contaminant appears to be POLs.

Former Staff

7/13/1993

Proposed Plan

Reviewed and approved closure plans for Tank 38, to be closed in placed.

Laura Noland

9/15/1993

Update or Other Action

(Old R:Base Action Code = CP - Closure Pending). Received closure notice for UST Number 38, a 1 Million gallon tank known to have leaked in the past. Closure in place.

Laura Noland

11/15/1993

Site Ranked Using the AHRM

Reranked.

Former Staff

4/1/1994

Update or Other Action

(Old R:Base Action Code = CORR - Correspondence (General)). Tank 38 was closed in placed per Tank 38 Closure report. ADEC agreed with closure. Contamination in area to be addressed through IRP program as the West Unit.

Laura Noland

5/27/1994

Update or Other Action

(Old R:Base Action Code = RPL2 - Site Information Request Letter). ADEC staff sent PRP-CS Database Notification Letter to RP requesting update and more environmental information concerning contaminated site.

Jeff Peterson

2/21/2003

Update or Other Action

Bioventing systems were installed at this site in the mid-90's. THese systems were operated periodically, but not properly maintained or monitored. In 2002 work was completed by an Air Force contractor to evaluate the systems. Further characterization of the soil and g.w. were completed. Groundwater concentrations still exceed cleanup levels. The bioventing systems will be overhauled in 2003 and continue to be operated. WElls will be installed downgradient to assess contaminant migration from the site.

Ann Farris

9/17/2003

Update or Other Action

Staff received the Draft Remedial Investigation/Feasibility Study Work Plan for Galena Airport. Staff has begun review of the document. A comment resolution/technical project team meeting is scheduled October 2-3rd in Anchorage. This work plan is intended to address the many outstanding site characterization issues that were raised by Louden Tribal Council, the Environmental Protection Agency, and ADEC as well as the Remedial Process Optimization Evaluation completed in 2002.

Ann Farris

1/22/2004

Meeting or Teleconference Held

Staff attended the 7th Galena Technical Project Team Meeting on January 12 through 15th. We discussed most of the contaminated sites at the Galena Air Force Station and the Campion Radio Relay Station. We evaluated the adequacy of the historical site characterization, the need for further characterization, possible remedial options, the adequacy of exiting remediation systems, and the need for a risk assessment. Of the 23 sites reviewed at the meeting, 5 are closed already by ADEC, 5 are believed to not need any further characterization or remediation. The remaining 13 need additional investigation or remediation of some type. Additionally, there are a few sites that were not covered during this meeting that will still need to be reviewed. Million Gallon Hill - The site is pretty well characterized. There is still a question about possible migration to the northwest. Further groundwater monitoring under the RI will assess that possible migration pathway. In addition, the performance of the existing bioventing systems will be evaluated under the RI. There will be an evaluation of remedial alternatives for the groundwater contamination under the RI as well.

Ann Farris

4/19/2004

Meeting or Teleconference Held

Staff participated in the 9th Galena Technical Project Team meeting on April 19th. The meeting was between representatives of the Air Force, Louden Tribal Council, City of Galena, Galena City School District, and the Alaska Department of Environmental Conservation. The primary objective of this meeting was to complete comment resolution on the the Draft Final Remedial Investigation/Feasibility Study Work Plan. The team did ultimately come to resolution on the work plan and the final version is expected out by mid-May.

Ann Farris

8/30/2004

Meeting or Teleconference Held

11th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

10/21/2004

Meeting or Teleconference Held

Galena RAB meeting. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

11/5/2004

Meeting or Teleconference Held

12th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

11/19/2004

Meeting or Teleconference Held

Attended a week long meeting in San Antonio, Texas to participate in the formulation of an outline for the Galena Airport and Campion Air Station Remedial Investigation/Feasibility Study (RI/FS).

Colin Craven

1/12/2005

Update or Other Action

Submitted comments to the Air Force to finalize the 2004 Site Recommendations for the upcoming Remedial Investigation report. The 2004 Site Recommendations were produced during the November 2004 meetings in San Antonio, Texas.

Colin Craven

1/28/2005

Meeting or Teleconference Held

Galena RAB meeting. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

1/28/2005

Meeting or Teleconference Held

13th Galena Technical Project Team in Galena. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

3/18/2005

Update or Other Action

Comment resolution between DEC and the Air Force has been achieved on the draft Human Health Risk Assessment Work Plan for the Galena Airport and Campion Air Station. The Air Force contractors are currently finalizing the work plan.

Colin Craven

4/19/2005

Meeting or Teleconference Held

14th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

4/26/2005

Meeting or Teleconference Held

Galena RAB meeting. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

5/13/2005

Meeting or Teleconference Held

15th Galena Technical Project Team meeting in Galena. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

6/9/2005

Meeting or Teleconference Held

16th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

7/20/2005

GIS Position Updated

Updated the location of the tank farm; interpolated from USGS quadrangle map.

Colin Craven

8/30/2005

Meeting or Teleconference Held

17th Galena Technical Project Team in Galena. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

10/12/2005

Meeting or Teleconference Held

Galena RAB meeting. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

10/20/2005

Meeting or Teleconference Held

18th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

1/3/2006

Update or Other Action

DEC received the draft Remedial Investigation and Feasibility Study. The Air Force is proposing to continue air injection bioventing to address petroleum contaminated soils, and additional installation of monitoring wells to better delineate the resultant groundwater plume. Long term monitoring and land use controls would be an integral part of the remedy. DEC comments will be submitted in February.

Colin Craven

1/26/2006

Meeting or Teleconference Held

19th Galena Technical Project Team in Galena. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

3/7/2006

Update or Other Action

The draft risk assessment found no unacceptable risk for this site, so no feasibility study was conducted. The Air Force has proposed air injection bioventing, long term groundwater monitoring (LTM) and land use controls (LUCs) until residual contamination has attenuated to Method 2 cleanup levels. DEC can not agree with the adequacy of the remedy until comments on the draft risk assessment are resolved.

Colin Craven

3/14/2006

Meeting or Teleconference Held

20th Galena Technical Project Team in Anchorage. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

6/1/2006

Site Characterization Workplan Approved

The Air Force and DEC came to agreement on a work plan for monitoring well installation and sampling that will serve to fill data gaps identified during the recent remedial investigation. Two monitoring wells with screened intervals below the top portion of the aquifer will be installed to better delineate the vertical distribution of the petroleum contamination. One well will be at the “mid-plume” and the other at the farthest downgradient edge of the plume; these new wells will help establish a sufficient network for long-term monitoring.

Colin Craven

6/20/2006

Meeting or Teleconference Held

21st Galena Technical Project Team in Galena. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

10/6/2006

Meeting or Teleconference Held

22nd Galena Technical Project Team meeting in Anchorage. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

11/17/2006

Meeting or Teleconference Held

23rd Galena Technical Project Team meeting in Fairbanks. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

11/17/2006

Update or Other Action

Two deeper interval monitoring wells were installed in summer 2006. 09-MW-29 was installed at the southern base of Million Gallon Hill, adjacent to a shallow monitoring well that had been showing non-detection for BTEX compounds. 09-MW-30 was installed farther downgradient of the hill, to the west and deeper than other wells that had previously served as sentry wells. Both 09-MW-29 and 09-MW-30 showed significantly higher benzene concentrations than the nearby shallow wells (43 and 110 micrograms per liter, respectively). Because of these new findings, it is no longer clear whether or not the plumes emanating from Million Gallon Hill and the Missile Storage are reaching the Yukon River.

Colin Craven

1/18/2007

Meeting or Teleconference Held

24th Galena Technical Project Team meeting in Anchorage. See the "Galena AFS - Sitewide" listing for more details.

Colin Craven

9/1/2010

Site Visit

Site visit

Amanda Loomis

2/15/2011

Meeting or Teleconference Held

TPT meeting, site discussed

Fred Vreeman

4/15/2011

Meeting or Teleconference Held

TPT meeting, site discussed

Fred Vreeman

5/5/2011

Meeting or Teleconference Held

TPT meeting, site discussed

Fred Vreeman

5/25/2011

Site Characterization Workplan Approved

CG001/CG002 approval of SC workplan

Fred Vreeman

5/25/2011

Conceptual Site Model Submitted

TPT meeting, site discussed

Fred Vreeman

6/9/2011

Site Visit

Site visit, field work audit

Fred Vreeman

6/16/2011

Site Visit

Site visit, field work audit

Amanda Loomis

6/21/2011

Meeting or Teleconference Held

TRIAD meeting, 2011 sample data discussed

Fred Vreeman

7/8/2011

Exposure Tracking Model Ranking

Initial ranking with ETM completed for source area id: 72394 name: auto-generated pm edit Galena AFS - Million Gal. Hill CG01

Amanda Loomis

7/27/2011

Update or Other Action

Draft Final Optimization Study and Response to Comments submitted by USAF

Fred Vreeman

8/4/2011

Update or Other Action

Revised CG001 sample depths approved

Fred Vreeman

8/9/2011

Update or Other Action

09MW05 Decommissioning approved

Fred Vreeman

9/15/2011

Update or Other Action

Conditional approval of the Field Sampling Plan for Million Gallon Hill was given. The conditional approval states: 1) that additional work tasks may be required to reach complete characterization of the site. 2) Prior to preparing a Site Characterization report, an additional workplan will be required that analyzes the results of investigation and identifies data gaps and will include a feasibility study.

Dennis Shepard

9/27/2011

Meeting or Teleconference Held

TRIAD meeting held. Site discussed. DEC approves installation of 2 well clusters (CG001-MW004 and CG001-MW005).

Dennis Shepard

10/20/2011

Meeting or Teleconference Held

TRIAD Meeting Held. Site discussed. One Soil stepout CG001_GP028 to the south of TCE exceedances at GP019 was approved.

Dennis Shepard

5/18/2012

Document, Report, or Work plan Review - other

DEC received the Draft Site Characterization results report for the Site.

Dennis Shepard

10/16/2012

Document, Report, or Work plan Review - other

DEC provided review comments for the Draft Site Characterization results report.

Dennis Shepard

11/8/2012

Meeting or Teleconference Held

A meeting was conducted with DEC contractor Shannon and Wilson to identify all remaining data gaps in the site characterization for all Galena Sites including CG001/CG002.

Dennis Shepard

6/18/2013

Document, Report, or Work plan Review - other

DEC received a Draft Final version of the Site Charaterization results report for the Site.

Dennis Shepard

6/26/2013

Document, Report, or Work plan Review - other

DEC provided review comments for the Draft Final version of the Site Charaterization results report for the Site.

Dennis Shepard

7/22/2013

Meeting or Teleconference Held

A teleconference call was held to resolve final issues on the Site Characterization results report for the Site. All issues were resolved.

Dennis Shepard

9/24/2013

Document, Report, or Work plan Review - other

DEC received a Final version of the Site Characterization results report for the Site.

Dennis Shepard

10/3/2013

Site Characterization Report Approved

The Site Characterization results report for the Site is approved.

Dennis Shepard

6/24/2014

Site Characterization Workplan Approved

DEC approved the 2013 Supplemental Site Characterization (SC) Sampling Plan, Former Galena Forward Operating Location (FOL), Galena, Alaska. This additional sampling was agreed to during a November 2012 Galena Data Gaps meeting.

Dennis Shepard

9/4/2014

Site Characterization Report Approved

DEC approved the Supplemental Site Characterization Results Report, Million Gallon Hill (Site CG001) and Missile Storage Area (Site CG002), Former Galena Forward Operating Location (FOL), Alaska. DEC/Air Force - comment/response and documentation of the agreements for a supplemental site characterization are documented in the approval letter (DEC_approval_CG001_CG002_df_suppSC_082014).

Dennis Shepard

11/24/2014

Site Characterization Report Approved

DEC approved the Addendum Site Characterization Results Report for this site. The purpose of the addendum was to address requirements for an SC Report under 18 AAC 75.335 (c) (DEC, 2012), specifically, to propose cleanup levels and remedial techniques for the site.

Monte Garroutte

11/28/2014

Risk Assessment Report Approved

DEC approved the Screening Level Ecological Risk Assessment (SLERA) for Million Gallon Hill and Missile Storage Area, (Sites CG001 & CG002). The report concluded there were no unacceptable ecologic risks.

Dennis Shepard

10/26/2016

Update or Other Action

Met with the CH2M project manager and a representative from Directed Technologies Drilling (DTD)while in Galena Alaska for a restoration advisory board meeting. The DTD engineer presented a video of the horizontal directed drilling project that is being planned to install a horizontal well/ sparging system at the CG001 site.

Dennis Shepard

10/26/2016

Meeting or Teleconference Held

A restoration Advisory board meeting was held in Galena Alaska to discuss the general and specific status of site investigations and cleanup at Galena.

Dennis Shepard

3/30/2017

Cleanup Plan Approved

DEC provided approval for the Subsurface Aeration (Horizontal Well) Cleanup Plan for Sites CG001, CG002, CB001, and Southern ST005.

Dennis Shepard

5/3/2018

Document, Report, or Work plan Review - other

DEC approved the Subsurface Aeration (Horizontal Well) Construction Completion Report for Sites CG001, CG002, CB001, and Southern ST005, Former Galena Forward Operating Location, Alaska.

Dennis Shepard

5/3/2018

Document, Report, or Work plan Review - other

DEC approved the Subsurface Aeration (Horizontal Well)Construction Completion Report for Sites CG001, CG002, CB001, and Southern ST005, Former Galena Forward Operating Location, Alaska.

Dennis Shepard

8/8/2018

Site Visit

DEC conducted a site visit at the Former Forward Operating Location in Galena, AK on August 8-9, 2018. A photo log is available in DEC's electronic file.

Jamie McKellar

10/29/2018

Site Visit

On October 23, 2018, DEC participated in the Technical Project Team (TPT) meeting with representatives from USAF and ADOT&PF. A site visit with inspections of each site was conducted the following day (10/24/2018) in Galena, as well as a regional advisory board (RAB) meeting with members of the community and other interested parties.

Jamie McKellar

4/5/2019

Site Visit

On April 2, 2019, DEC staff participated in a Technical Project Team meeting with representatives from USAF, Parsons, CH2M, and ADOT. The TPT meeting was held at the Fairbanks DEC office. On April 3-4, 2019, DEC staff traveled to Galena to participate in meetings with the City Mayor & RAB chair to discuss community concerns about site cleanup; a Proposed Plan meeting for Site DP023, and a community regional advisory board (RAB) meeting to discuss fieldwork completed during the 2018 field season and upcoming 2019 fieldwork. Site visits were also conducted.

Jamie McKellar

10/4/2019

Exposure Tracking Model Ranking

Initial ranking with ETM completed for source area id: 80500 name: Site CG002 - Missile Storage Area

Jamie McKellar

10/23/2019

Meeting or Teleconference Held

On October 22, 2019, DEC participated in the Technical Project Team (TPT) meeting with representatives from USAF and ADOT&PF. A site visit was conducted the following day (10/23/2019) in Galena, as well as a regional advisory board (RAB) meeting with members of the community and other interested parties.

Jamie McKellar

10/30/2019

Document, Report, or Work plan Review - other

REPORT APPROVAL: Final Performance Monitoring Report (CH2M Hill Sites) for Sites ST020, SS005, CST014, CST011 Area 2, TU001, CG001, CG002, CB001 and Southern ST005, Former Galena Forward Operating Location, Alaska (CH2M, October 2019)

Jamie McKellar

3/5/2020

Update or Other Action

Site CG002 has been administratively closed based on the following: 1) There is no known source of contamination at Site CG002, and 2) Subsurface soil and groundwater contamination at Site CG002 has been attributed to the larger, upgradient site, Million Gallon Hill ([MGH], Site CG001). DEC tracks CG001 and CG002 as a single site: Galena AFS/Airport - CG001/CG002 MGH/MSA, Hazard ID 1416, and File No. 860.38.002. This site will remain open in DEC’s Contaminated Sites Database until Cleanup Complete is reached for Site CG001.

Jamie McKellar

5/21/2020

Document, Report, or Work plan Review - other

REPORT APPROVAL: 2019 Performance Monitoring Report (CH2M Hill Sites) for Sites ST020, SS005, CST014, CST011 Area 2, TU001, CG001, CG002, CB001, Southern ST005, and ST005 Area C (CH2M, May 2020)

Jamie McKellar

5/3/2021

Document, Report, or Work plan Review - other

WORK PLAN APPROVED: Final 2021 Remedial Process Optimization Work Plan (Sites CG001, CST011 Area 2, CST014, SS005, ST005 Area C, Southern ST005, and TU001), Former Galena Forward Operating Location, Alaska (CH2M, April 2021)

Jamie McKellar

5/3/2021

Document, Report, or Work plan Review - other

REPORT APPROVED: Final Data Quality Assessment, November 2019 – October 2020, Soil Vapor Monitoring for Sites CG001, CST014, SS005, ST005 Area C, Southern ST005, and TU001 (CH2M, April 2021)

Jamie McKellar

5/3/2021

Document, Report, or Work plan Review - other

REPORT APPROVED: Final Data Quality Assessment, September – October 2020 Groundwater Monitoring at Sites CG001, CST011, CST014, SS005, Southern ST005, ST005 Area C, and TU001.

Jamie McKellar

6/28/2021

Update or Other Action

A cleanup complete with ICs determination was issued for Site SS025, which is located southeast of Million Gallon Hill. Institutional controls for groundwater associated with Site CG001, located beneath Site SS025, will remain in place and will be monitored as part of Site CG001. The removal of institutional controls on Site SS025 will be considered when groundwater contamination associated with Site CG001 has achieved Table C CULs. See the Attachments under Site SS025 (Hazard ID 26192) for more information.

Jamie McKellar

11/30/2021

Document, Report, or Work plan Review - other

TECHNICAL MEMORANDUM APPROVAL: Final 2021 Remediation System and Well Decommissioning and Replacement (Sites CG001, CSS002, SS025, ST005, ST020, and TU001), CH2M/Jacobs, November 2021

Jamie McKellar

6/29/2022

Meeting or Teleconference Held

CS Staff attended a presentation by USAF contractors CH2M and Parsons regarding sample results obtained with submersible pumps and Passive Diffusion Bags (PDBs).

Jamie McKellar

1/31/2023

Document, Report, or Work plan Review - other

WORK PLAN ADDENDUM APPROVAL: 2022 Remedial Process Optimization Work Plan Addendum (Sites CG001, CST011 Area 2, CST014, SS005, ST005 Area C, Southern ST005, and TU001).

Jamie McKellar

8/31/2023

Document, Report, or Work plan Review - other

WORK PLAN APPROVAL: Final 2023 Data Collection Sampling Plan (Sites SS005, CST014, CST011 Area 2, TU001, CG001, Southern ST005, and ST005 Area C), Former Galena Forward Operating Location, Alaska (CH2M, August 29, 2023)

Jamie McKellar

11/15/2023

Site Visit

DEC, DOT, USAF, and contractors met at the Fairbanks DEC office on May 2, 2023 for a Technical Project Team meeting. The following day a site visit and Regional Advisory Board (RAB) meeting were held in Galena. Meeting minutes for the TPT and RAB meetings were approved on November 15, 2023.

Jamie McKellar

11/16/2023

Long Term Monitoring Workplan or Report Review

REPORT APPROVED: Data Quality Assessment 2022 Groundwater Monitoring for Sites CG001, CST011, CST014, SS005, ST005 Area C, Southern ST005, and TU001, Former Galena Forward Operating Location, Alaska (CH2M, October 2023)

Jamie McKellar

11/20/2023

Long Term Monitoring Workplan or Report Review

REPORT APPROVED: Remedial Process Optimization Report (Sites CG001, CST011 Area 2, CST014, SS005, ST005 Area C, Southern ST005, and TU001), Former Galena Forward Operating Location, Alaska (CH2M, November 2023)

Jamie McKellar

11/20/2023

Update or Other Action

REPORT APPROVED: Data Quality Assessment 2021 Groundwater Monitoring for Sites ST005 Area C, Southern ST005, SS005, CG001, CST011, CST014 and TU001 (CH2M, May 2022)

Jamie McKellar

11/20/2023

Update or Other Action

REPORT APPROVED: Data Quality Assessment October 2021 Soil Sampling for Sites ST005 Area C, SS005, CG001, and CST011 (CH2M, May 2022)

Jamie McKellar

4/23/2024

Meeting or Teleconference Held

CS staff participated in the biannual Technical Project Team (TPT) meeting with representatives from USAF BRAC, Parsons, Jacobs/CH2M Hill, and EA Engineering. The meeting was held at the EA Engineering office in Anchorage, AK.

Jamie McKellar

6/24/2024

Document, Report, or Work plan Review - other

DEC reviewed and supplied comments to the USAF regarding the Performance Monitoring Report (PMR), which presents results of the Fiscal Year (FY) 2023 performance monitoring of remediation systems at the Former Galena Forward Operating Location (FOL). During FY 2023, the Air Force Civil Engineer Center (AFCEC) conducted air sparging, soil vapor extraction, and vapor intrusion mitigation systems operations, along with groundwater monitoring. The report details recommendations for future remedial actions, including continued monitoring and operations of soil cleanup systems.

Tim Sharp

6/27/2024

Document, Report, or Work plan Review - other

DEC approved multiple data quality assessment reports for soil, soil vapor, groundwater, and sediment. Reports were submitted by Parsons and CH2M/Jacobs. Approval letter is dated 6/27/2024.

Jamie McKellar

7/11/2024

Document, Report, or Work plan Review - other

DEC Approved the Final 2023 Performance Monitoring Report for Sites SS005, CST014, CST011 Area 2, TU001, CG001, Southern ST005, and ST005 Area C, Former Galena Forward Operating Location on this date.

Tim Sharp

Contaminant Information

Name

Level Description

Media

Comments

Control Type

Type

Details

Requirements

Description

Details

Site CG002 - Administrative Closure Letter

No associated sites were found.

Missing Location Data

Because the GIS location data for this site has not been entered, we cannot direct you to its position on the map. Click "Continue" to proceed to the Contaminated Sites Web Map or "Close" to return to the site report.

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Site Report: Galena AFS/Airport - CG001/CG002 MGH/MSA

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Site CG002 - Administrative Closure Letter

Missing Location Data

State of Alaska Department of Environmental Conservation