Site Report: Fort Wainwright (OU-1) 801 Drum Burial Site FTWW-067

Site Name:	Fort Wainwright (OU-1) 801 Drum Burial Site FTWW-067
Address:	Trainor Gate Road, SW of RR Bridge, Fort Wainwright, AK 99703
File Number:	108.38.068.08
Hazard ID:	1127
Status:	Active
Staff:	Carly Jensen, 9072697558 carly.jensen@alaska.gov
Latitude:	64.841101
Longitude:	-147.651689
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

The 801 Drum Burial Site was formerly used as a drum storage and disposal area in the 1950s and 1960s. Drums stored in this area reportedly contained diesel fuel, gasoline, jet fuel, solvents, asphalt, pesticides and lubricants. The site was discovered during construction of a storm sewer in the summer of 1992 as part of the 801 contract housing construction project (now known as the Birchwood Homes subdivision). Soil excavation and drum removal activities were conducted in the 1990s. Sampling results showed elevated levels of petroleum, oil, and lubricants (POLs), pesticides, and solvents in soil and groundwater. Soil excavation removal activities resulted in removal of the source area however, residual contamination levels are expected to remain. Groundwater monitoring wells were installed across the site to evaluate the extent of the groundwater contamination. Annual groundwater monitoring occurred from 1997 until 2005 when a 5-year sampling schedule was implemented to coincide with Five-Year Reviews. Dieldrin, aldrin, benzene, gasoline range organics (GRO), diesel range organics (DRO), 1,2,4-trimethylbenzene and naphthalene continue to exceed the Record of Decision (ROD) remedial action goals (RAGs) and DEC cleanup levels. Long-term groundwater monitoring at this site is expected to continue until all contaminants of concern are below cleanup levels. During the 2023 field season, approximately 90 empty drums were detected by geophysics and removed. The corresponding U.S. Army HQAES site number is: 02871.1044.

Action Information

Action Date	Action	Description	DEC Staff
8/25/1992	Update or Other Action	(Old R:Base Action Code = FI - Field Inspection (General)). Site visit. Excavation and removal of 5 drums as of noon. (1) full runny tar-like substance. Site is Level C protection.	Rielle Markey
9/23/1992	Update or Other Action	(Old R:Base Action Code = FI - Field Inspection (General)). Site visit, drum removal complete. Total 92 drums removed. 2 soil samples.	Ronan Short
2/9/1993	Update or Other Action	(Old R:Base Action Code = FI - Field Inspection (General)). Report results from removal action August 92. Sampling and analyses from 3 sites.	Ronan Short
6/11/1993	Update or Other Action	(Old R:Base Action Code = SI - Site Investigation). Final Report, "Drummed Waste Removal" received 2-9-93, 3 volumes in white binders placed in NRO library 6-11-93. NFAs proposed for these areas.	Ronan Short
8/6/1993	Update or Other Action	(Old R:Base Action Code = SA2R - Phase II SA Review (CS)). Workplan received for 801 Drum Burial site; OU-2, PSE2. See also 108.38.014, 1168 also in this report. Support work.	Ronan Short
2/22/1994	Update or Other Action	(Old R:Base Action Code = SA2R - Phase II SA Review (CS)). PSE2 completed after OHM Corp. performed Removal Action under CERCLA in 9/92. This is Support Work document. GRO, DRO, BTEXs, VOCs and Insecticides Aldrin and Dieldrin found above ADEC Clean-up levels and threshold concentration respectively. HLA recommends RI/FS process for remediation of this site.	Ronan Short
5/16/1994	Update or Other Action	(Old R:Base Action Code = RPL2 - Site Information Request Letter). Sent PRP-CS Database Notification Letter to Cristal Fosbrook requesting update/confirmation of information concerning the contaminated site.	Jeff Peterson
8/10/1994	Update or Other Action	(Old R:Base Action Code = MP - Management Plan (CERCLIS)). Draft Field Sampling Plan (for RI/FS) and RI/FS Draft Management Plan received this date. Prepared by ENSR. Community Relations Plan for OU1 received this date. Prepared by ENSR.	Ronan Short
11/16/1994	Update or Other Action	(Old R:Base Action Code = MP - Management Plan (CERCLIS)). Draft Final Management Plan by ENSR. Draft Final CRP by ENSR.	Ronan Short
11/16/1994	Update or Other Action	(Old R:Base Action Code = MP - Management Plan (CERCLIS)). Site transferred to OU1 and included in MP for OU1. Expanded GPR performed by CRREL in fall '94.	Ronan Short
12/23/1994	Site Ranked Using the AHRM	Initial ranking.	Jeff Peterson
1/17/1995	Update or Other Action	Post-wide Risk Assessment Approach Document received this date. Comments by RM. Document prepared by HLA.	Ronan Short
3/8/1995	Site Characterization Workplan Approved	(Old R:Base Action Code = MP - Management Plan (CERCLIS)). Received revised draft final of OU1 M-Plan prepared by ENSR. Five sites in OU1.	Ronan Short
1/29/1996	Update or Other Action	"Groundwater Sampling for Storage Tank Sites, Report of Findings", Volumes 1 and 2, received 01/29/96.	Ronan Short
5/24/1996	Risk Assessment Report Approved	Draft Human Health Risk Assessment, OU-1.	Rielle Markey
6/1/1996	Update or Other Action	(Old R:Base Action Code = FS - Feasibility Study (General)). Draft Feasibility Study, OU-1, Fort Wainwright, Alaska, Building 2077, Building 1599, received 7/1/1996.	Rielle Markey
6/1/1996	Update or Other Action	(Old R:Base Action Code = RI - Remedial Investigation). Final Remedial Investigation Report, OU-1, Fort Wainwright, Alaska, received 7/9/1996, Draft/Final Redline.	Rielle Markey
8/1/1996	Update or Other Action	Review Response, Draft Final RI Report, OU-1 Fort Wainwright, received 8/12/1996.	Rielle Markey
8/1/1996	Update or Other Action	(Old R:Base Action Code = RI - Remedial Investigation). Final OU-1 Remedial Investigation Report, received 8/12/1996.	Rielle Markey
9/16/1996	Site Characterization Report Approved	(Old R:Base Action Code = RI - Remedial Investigation). Final, Remedial Investigation Report, OU-1, document date September 1, 1996.	Rielle Markey
10/24/1996	Site Added to Database	Peer Review held. ADEC recommended actions, further investigation for drums, and GW monitoring.	Rielle Markey
2/1/1997	Proposed Plan	Proposed Plan completed for this OU.	Rielle Markey
3/26/1997	Update or Other Action	Site updated by Shannon and Wilson, based on the Army Defense Site Environmental Restoration Tracking System dated 11/8/96. The worksheet indicates 140 ppb benzene and various other compounds (including pesticides) in groundwater, and pesticides in sediment and soil.	S&W
4/8/1997	Update or Other Action	Received Draft workplan for rhizosphere enhanced phytoremediation Treatment Study.	Rielle Markey
4/14/1997	Update or Other Action	Received Transmittal of ADEC 1996 quarterly well sampling at 801 drum burial site.	Rielle Markey
6/27/1997	Record of Decision	ROD signed by all three parties. This site requires further action under CERCLA.	Rielle Markey
6/27/1997	Cleanup Level(s) Approved	Remedial Action Objectives in surface and subsurface soil are 3.8 mg/kg for Aldrin. 4.0 mg/kg dieldrin. Groundwater is Aldrin .004 ug/l, Dieldrin .004 ug/l, 1,1-dichloroethene 7 ug/l, benzene 5 ug/l, and vinyl chloride 2 ug/l.	Rielle Markey
6/27/1997	Institutional Control Record Established	Institutional controls involve access and use limitations that require maintenance of institutional boundaries in an Army GIS database. Action entered by Buck.	Rielle Markey
7/17/1997	Update or Other Action	Received draft work plan for 801 Drum Burial Site.	Rielle Markey
6/27/1999	Long Term Monitoring Established	Long-Term Monitoring of site established as part of remedy.	Rielle Markey
6/27/1999	Update or Other Action	ICs established through Fort Wainwright DPW policies.	Rielle Markey
11/4/1999	Update or Other Action	ROD includes phytoremediation study for aldrin, dieldrin contaminated soils	Rielle Markey
8/14/2000	Update or Other Action	New project manager assigned	Ann Farris
10/17/2000	Update or Other Action	Long-term monitoring GW results reviewed. Comprehensive 16 well sampling event cut back to every three years. Interim years will only sample one well by housing, AP-7163, and one well by Chena River, AP-7282. Approved by EPA and State.	Ann Farris
11/3/2000	Update or Other Action	Preliminary Draft Remedial Action Report, Operable Unit 1, Fort Wainwright, Alaska, August 2000. Action entered by Sarah Riddle	Ann Farris
12/5/2000	Update or Other Action	DoD Rank changed to High based on Comments section of the Problem Comments Tab that states "Site assigned a HIGH site rank on the Army Defense Site Environmental Restoration Tracking System Worksheet dated 11/8/96."	Former Staff
1/25/2001	Update or Other Action	Five-Year Review Scheduled for 2001. Draft Expected in June 2001. Final by September 2001. Staff attended RAB Meeting on January 23 - no significant public comments.	Ann Farris
6/11/2001	Interim Removal Action Approved	Interim Removal Action Report approved by Ann Farris. Action entered by Sarah Riddle.	Ann Farris
9/25/2001	Update or Other Action	Final Five-Year Review Received.	Ann Farris
12/12/2001	Institutional Control Record Established	1. All organizations conducting activities on United States Army Alaska (USARAK) controlled land are responsible for complying with established institutional controls (ICs). ICs are administrative, procedural, and regulatory measures to control human access to and usage of property. They are applicable to all known or suspected contaminated sites where contamination has been left in place. 2. These controls have been established to implement the selected remedial actions agreed upon by the U.S. Army (Army), the U.S. Environmental Protection Agency (USEPA), and the Alaska Department of Environmental Conservation (ADEC) in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as amended by the Superfund Amendment Reauthorization Act (SARA). These controls also apply to remedial actions agreed upon under Two-Party Compliance Agreements. These agreements are concluded between USARAK and ADEC and apply to petroleum/oil/lubricants- (POL) contaminated sites. 3. ICs such as limitations on access, water use, excavations, and property transfers will supplement engineering controls as appropriate for short-term and long-term management to prevent or limit human and environmental exposure to hazardous substances, pollutants, or contaminants. Specific ICs include, among other things: limitations on the depth and location of excavations, prohibition of or restrictions on well drilling and use of ground water, requirements for worker use of personal protective equipment, site monitoring, and prohibition of certain land uses, types of vehicles, etc. 4. Organizational units, tenants, and support/contractor organizations must obtain an Excavation Clearance Request (ECR) for all soil disturbing activities impacting soils six inches or more below the ground surface. The review process for approval of an ECR begins with the identification of the current status (known or suspected hazardous waste site or “clean” site) of a work location. ECR’s for work in known or suspected hazardous waste sites: a. will include specific limitations and controls on such work; b. will include specific IC procedures, and notification, monitoring, reporting, and stop work requirements; c. may include procedures for management, characterization, and disposal of any soil or groundwater encountered or removed; d. will identify “project managers” for both the unit/contractor requesting the work and DPW Environment Resources. 5. The DPW project manager will conduct on-site inspections of each work site (at which ICs apply) to determine continued compliance with the terms and conditions of the approved ECR. DPW has the authority to revoke ECR approval if the specified terms and conditions are not being met. ECR forms are available at the Customer Service Desks at: a. Building 730 at Fort Richardson; b. Building 3015 at Fort Wainwright; c. Building 605 at Fort Greely. 6. USARAK has negotiated (with USEPA and/or ADEC) decision documents and/or Records of Decision (RODs) that mandate the implementation of ICs USARAK Directorate of Public Works, Environmental Resources Department (PWE), maintains copies of all decision documents and RODs requiring ICs in its real property files. PWE provides regularly updated post maps showing all areas affected by ICs. These maps can easily be accessed by using an approved intranet mapping interface application. Copies of these maps will be available to each directorate, activity, and tenant organization. To ensure the effectiveness of ICs, all organizational units and tenant activities will be informed on an annual basis of ICs on contaminated soils and groundwater in effect near their facilities. 7. ICs are enforceable by the U.S. Environmental Protection Agency (USEPA) and the Alaska Department of Environmental Conservation (ADEC). Failure to comply with an IC mandated in a decision document or ROD will violate the USARAK Federal Facility Agreement and may result in stipulated fines and penalties. This does not include the costs of corrective actions required due to violation of an established IC.	Sharon Richmond
10/30/2002	Update or Other Action	Memo from EPA, RPMs agreed to not amend the ROD to include cis-1,2-Dichlorethene but continue to sample for the contaminant	Patrice Buck
3/20/2003	Site Number Identifier Changed	Changed Workplan from X1 to X9 due to the presence of hazardous substances at the site.	Former Staff
7/16/2003	Meeting or Teleconference Held	Fort Wainwright Restoration Advisory Board held it's last meeting on July16, 2003.	Patrice Buck
3/4/2004	Long Term Monitoring Established	Staff has completed a review of the Draft Report CLOSES Evaluation 801 Drum Burial Site for Operable Unit 1, Fort Wainwright. The pesticides aldrin and dieldrin are the only remaining soil and groundwater contaminants of concern (COCs) above cleanup levels established in the Record of Decision. The report presents information from long term monitoring results to show that the contamination plume is stable and not migrating towards the Chena River. The report recommends modifying the groundwater monitoring to reduce the number of wells sampled and the frequency of sampling events. Under this proposal, sampling will be conducted once every five years and only those wells critical to evaluating natural attenuation will be sampled.	Patrice Buck
11/2/2004	Update or Other Action	2003 annual monitoring report approved. Very little change in contaminant concentrations since last sampling. A long-term groundwater monitoring plan is in place.	Sharon Richmond
3/8/2005	Site Characterization Report Approved	The ARmy successfully excavated about 950 cubic yards of contaminated soil and encapsulated it in a cell at the FTWW landfill. Report approved.	Sharon Richmond
3/9/2005	Interim Removal Action Approved	Contaminated Sites staff reviewed and approved the Draft Removal Action Report for the Phytoremediation Study Site Decommissioning for Fort Wainwright. Approximately 950 cubic yards of soil contaminated with DDT, DDD, aldrin and dieldrin was excavated from a former drum burial site. A phytoremediation treatability study was carried out on the excavated soil but was discontinued after four years because it was not effective. The treatment cells were dismantled and transported to a lined containment cell at the Fort Wainwright Landfill. Following excavation, contamination remained in several locations. Additional soil was excavated and transported to the landfill. Final confirmation samples met all applicable cleanup levels. A long-term groundwater monitoring plan is in place and it appears that this site will require no further remedial action.	Sharon Richmond
3/10/2005	Site Characterization Report Approved	Contaminated Sites staff reviewed and approved a draft 2004 Groundwater Monitoring Report for the 801 Drum Burial Site on Ft. Wainwright. Low concentrations of dieldrin remain in groundwater. Moderate concentrations of cis-dichloroethene have persisted at one monitoring well. Staff recommended installing an upgradient monitoring well to determine if there is a source area in the 801 Housing Area that might affect indoor air quality.	Sharon Richmond
7/6/2005	Institutional Control Record Established	Contaminated soil from the phytoremediation pilot study was disposed of in the Fort Wainwright landfill. The soil was encapsulated and covered with a cap. The cap will be inspected annually.	Sharon Richmond
8/18/2005	Site Characterization Report Approved	Staff approved the Draft 2005 Annual Groundwater Monitoring Report and the recommendation to monitor every 5 years with samplings scheduled to conincide with the 5-year review.	Sharon Richmond
11/16/2005	Meeting or Teleconference Held	ADEC attended the regularly scheduled FFA meeting with the Army, the EPA, Corps, and consultants. Groundwater sampling results were presented at the April FFA meeting. Low concentrations of aldrin, dieldrin, and cis-DCE persist. Draft 2004 and Draft 2005 Annual Reports need to finalized. Next sampling event is scheduled for 2010 and will coincide with the next Five-Year Review.	Sharon Richmond
11/16/2005	Meeting or Teleconference Held	Removal Action Report was finalized in September for the Phytoremediation soils. Two holes were found in the soil cap on the soil storage celss in April 2005. The underlying liner was 'ballooning' in these areas. Vents will be installed to permit off-gassing after soil thaws next season.	Sharon Richmond
12/21/2005	Update or Other Action	Staff reviewed the Phytoremediation Study Site Decommissioning Report. Approximately 850 cy of soil were removed and placed into four treatment cells. The soil was treated by phytoremediation. After 4 seasons, it was determined that this approach was ineffective and the soil was subsequently transported to a lined containment cell at the Fort Wainwright landfill. The cell is periodically inspected to ensure that liner and cover remain intact.	Sharon Richmond
10/24/2006	Update or Other Action	File name changed from FTWW to Fort Wainwright, per Project Manager.	April Woolery
3/5/2008	Exposure Tracking Model Ranking	Initial ranking with ETM completed.	Sharon Richmond
5/13/2008	Update or Other Action	Staff approved work plan to resume monthly inspection of the OU1 Drum Burial phytoremediation soil cell at the landfill. The cell is inspected monthly when the ground is not frozen. The soil cell containing low-level pesticides will be inspected to make sure that vents are in good order, repaired if necessary, and the cap is intact. Vents will be closed when the soil freezes inthe fall.	Sharon Richmond
5/13/2010	Document, Report, or Work plan Review - other	A draft groundwater monitoring work plan in support of the upcoming five-year review was reviewed. Significant comment was sent to the Army as the only wells planned for sampling were not within the source area.	Debra Caillouet
6/18/2010	Document, Report, or Work plan Review - other	OU1 801 Drum Burial Site Technical Memorandum, Groundwater Sampling and Analysis, June 2010	Debra Caillouet
7/13/2010	Document, Report, or Work plan Review - other	Final 2010 Work Plan, Groundwater Monitoring at the 801 Drum Burial Site, Operable Unit 1, Fort Wainwright, July 2010	Debra Caillouet
3/16/2011	Document, Report, or Work plan Review - other	Draft 2010 Monitoring Report, Groundwater Monitoring at the 801 Drum Burial Site, Operable Unit 1, Fort Wainwright, March 2011	Debra Caillouet
4/18/2011	Document, Report, or Work plan Review - other	2010 Monitoring Report, Groundwater Monitoring at the 801 Drum Burial Site, Operable Unit 1, Fort Wainwright, March 2011. The report recommends continuing the groundwater sampling on a five-year basis at the eight monitoring wells included in this event. It recommends adding VOC analysis for AP-6326 and decommissioning of eight monitoring wells at the site that are no longer used. DEC concurs with these recommendations.	Debra Caillouet
12/9/2011	Document, Report, or Work plan Review - other	OU1 801 Drum Burial Site Groundwater Sampling and Analysis After-Action Report, (Draft Revision 1). Report has resampling at the correct depth for the deep well.	Debra Caillouet
9/1/2015	Update or Other Action	Transferred to Fairbanks	Susan Carberry
12/13/2016	Meeting or Teleconference Held	A two day Federal Facilities Agreement (FFA) and Stakeholders meeting was held on December 13 & 14, 2016. The main focus of the meeting was to develop a site discovery and site intake process that would satisfy requirements of the Fort Wainwright FFA, RCRA Permit, and two party agreements. The Army, EPA and DEC committed to a flowchart of the preliminary source evaluation process. Timelines were established for scoping a land use control implementation plan (LUCIP) and developing a contracting schedule for Fort Wainwright contaminated site investigations and remedial actions. Seven sites were proposed for inclusion into the FFA (three party agreement) by the Army and the RPMs documented the assignment of the regulatory path for these sites using a newly developed and agreed to signature form.	Dennis Shepard
1/1/2017	Document, Report, or Work plan Review - other	DEC approved the 2015 Annual Institutional Controls Report, Fort Wainwright, Alaska (August 2016).	Dennis Shepard
8/1/2019	Document, Report, or Work plan Review - other	DEC approved the Final 2019 CERCLA Sites Work Plan Operable Units 1 through 6 (Dated July 2019). DEC provided a conditional approval on April 15, 2019 so the contractor could begin the 2019 groundwater sampling in advance of finalizing this work plan addendum. Review comments for the draft version of the document was provided on April 26, 2019. The document was prepared to help guide the site activities, data review, and reporting tasks for work conducted at Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) sites on Fort Wainwright, Alaska (FWA) during the 2019 field season. The U.S. Army Garrison (USAG) Alaska CERCLA sites associated with this Work Plan include Operable Units (OUs) 1 through 6.	Erica Blake
1/8/2020	Document, Report, or Work plan Review - other	DEC approved the 2019 OU1 Monitoring Report, Drum Burial Site, Operable Unit 1, U.S. Army Garrison Alaska (dated December 2019). The report describes 2019 groundwater sampling results. Monitoring wells were sampled for pesticides, gasoline range organics (GRO), diesel range organics (DRO), volatile organic compounds (VOCs), dissolved iron and manganese, and sulfate. The boundary wells had dieldrin exceedances, which indicates the dieldrin plume may not be fully delineated. Increasing the sampling frequency for pesticides at the boundary wells and installing additional monitoring wells in the Birchwood Homes property to define the dieldrin plume was recommended.	Erica Blake
7/28/2020	Document, Report, or Work plan Review - other	DEC approved the Final 2020 CERCLA Site Work Plan Operable Units 1 through 6 Fort Wainwright, Alaska (dated July 2020). The document was prepared to guide site activities, data review, and reporting tasks for work conducted at Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) sites on Fort Wainwright, Alaska (FWA). CERCLA sites covered by this work plan include Operable Units (OUs) 1 through 6. All six OUs will also be included in the annual institutional controls (IC) inspection.	Erica Blake
2/11/2021	Offsite Soil or Groundwater Disposal Approved	ADEC approved 280 gallons of purge water generated from six sites (Bldg 3570, OU1, OU2 (DRMO1 and DRMO4), OU4 Landfill, OU5 EQFS, and OU6) on Fort Wainwright, Alaska to be transported from the Fort Wainwright hazardous waste facility (Building 3489) to U.S. Ecology in Grand View, Idaho. The purge water was generated from groundwater sampling activities on Fort Wainwright during the 2020 field season.	Erica Blake
4/16/2021	Document, Report, or Work plan Review - other	DEC approved the Final 2020 Monitoring Report 801 Drum Burial Site, Operable Unit 1, Fort Wainwright, Alaska (dated April 2021). The report describes the results from the 2020 groundwater sampling. Groundwater samples were collected from three downgradient wells, and samples were analyzed for organochlorine pesticides, volatile organic compounds (VOCs), gasoline range organics (GRO), diesel range organics (DRO), dissolved iron and manganese, and sulfate. Dieldrin and aldrin continue to persist at concentrations above the Record of Decision (ROD) remedial action goal (RAG). Continued monitoring of these wells is recommended to build a data set for trend analysis. Continued annual monitoring at this site is expected.	Erica Blake
6/15/2021	Document, Report, or Work plan Review - other	ADEC provided review comments for the "Draft 2021 CERCLA Sites Work Plan Operable Units 1 through 6, Fort Wainwright, Alaska" (dated May 2021) to the U.S. Army. The document describes proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at the six Operable Unit (OU) sites on Fort Wainwright, Alaska (FWA). In addition to sampling activities, institutional control (IC) inspections will be conducted.	Erica Blake
6/21/2021	Document, Report, or Work plan Review - other	ADEC provided responses to comments for the "Draft 2021 CERCLA Sites Work Plan Operable Units 1 through 6, Fort Wainwright, Alaska" dated May 2021 to the U.S. Army. Review comments were provided on June 15, 2021, and responses were received and reviewed June 21, 2021. A final version of the work plan has been requested, upon receipt of the final ADEC will be able to provide approval. The document is a work plan with proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit (OU) sites (OU1 through OU6) on Fort Wainwright, Alaska.	Erica Blake
7/19/2021	Document, Report, or Work plan Review - other	ADEC provided review comments for the "Draft-Final Fifth Five-Year Review Report, Fort Wainwright Fairbanks, Alaska" to the U.S. Army. The document is the fifth Five-Year Review for Fort Wainwright. The remedies at six Operable Units were evaluated.	Erica Blake
7/30/2021	Document, Report, or Work plan Review - other	ADEC provided approval for the "Final 2021 CERCLA Sites Work Plan Operable Units 1 through 6, U.S. Army Garrison Alaska" (dated July 2021) to the U.S. Army. The document describes site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit sites on Fort Wainwright, Alaska (FWA).	Erica Blake
8/26/2021	Document, Report, or Work plan Review - other	ADEC provided responses to comments for the "Draft-Final Fifth Five-Year Review Report, Fort Wainwright Fairbanks, Alaska" to the U.S. Army. The Fifth Five-Year Review document evaluated the protectiveness at six Operable Unit sites.	Erica Blake
10/6/2021	Document, Report, or Work plan Review - other	ADEC provided an acknowledgement of receipt letter for the "Final Fifth Five-Year Review Report, Fort Wainwright Fairbanks, Alaska" (undated) to the U.S. Army. The FYR report describes and evaluates the implementation of performance remedies in place at six Operable Units (OUs) on Fort Wainwright, Alaska (OUs 1, 2, 3, 4, 5 and 6). ADEC does not concur with the protectiveness determinations in the final FYR report.	Erica Blake
3/18/2022	Document, Report, or Work plan Review - other	ADEC provided review comments for the "Draft 2022 CERCLA Sites Work Plan Operable Units 1 through 6" Fort Wainwright, Alaska, U.S. Army Garrison Alaska (dated February 2022) to the U.S. Army. The document describes proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit sites on Fort Wainwright, Alaska (FWA). This work plan is intended for use in conjunction with the "Draft Fort Wainwright Environmental Investigations and Monitoring Postwide Quality Assurance Program Plan Fort Wainwright, Alaska" (dated December 2021). The post wide work plan is still in review and at the time of this review has not yet been approved.	Erica Blake
5/24/2022	Offsite Soil or Groundwater Disposal Approved	ADEC approved transport of approximately 247 gallons of purge water generated from long-term monitoring activities conducted in 2021 (from Neely Rd - Two-Party Site, OU1, OU2-DRMO1 & DRMO4, OU4, OU5-WQFS & EQFS, and OU6) from Fort Wainwright Bldg 3491 to U.S. Ecology in Grand View, Idaho.	Erica Blake
8/23/2022	Site Visit	ADEC, Army, USACE, USAEC, EPA conducted a site visit of 1599, 801 Drum Burial Site, Beacon Tower Landfill, some construction sites (namely the Aquatics Center construction adjacent to the Oak Avenue Pipeline, and the North Town Sink Hole. Additionally, scoping for the August VI sampling efforts at 1060 and 3030 were discussed.	Tim Sharp
2/17/2023	Document, Report, or Work plan Review - other	DEC submitted comments on the Draft 801 Drum Burial Site Remedial Action Work Plan. The work plan proposes geophysical surveying and ensuing removal and disposal of buried drums, metal debris, and contaminated soil. In addition, the Army will sample groundwater to determine the presence or absence of contamination. DEC's commented on the draft document that the Army is not following the state's interpretation of federal regulations that require the Army to delineate contamination to DEC's most stringent cleanup levels.	Tim Sharp
3/13/2023	Update or Other Action	DEC approved the geophysics work for 2023 could go ahead without a fully approved site characterization work plan as it is non-invasive (i.e. will not disturb the soil) and EPA has given provisional approval as well. The work plan will be finalized on an expedited schedule.	Tim Sharp
6/9/2023	Site Characterization Workplan Approved	DEC completed a backcheck of the Final Remedial Action Work Plan for the OU1 801 Drum Burial Site. One comment on the draft work plan requested contaminants in soil to be delineated to at least the most stringent of DEC’s promulgated cleanup levels, typically the migration to groundwater cleanup levels. DEC recognizes the importance of the intended field sampling, and the Army’s commitment to ensure analytical methods have limits of detection that are able to achieve the DEC migration to groundwater cleanup levels. As the Army did not identify the fate and transport model that will be used to evaluate the migration to groundwater pathway, DEC will evaluate the results of this field effort as presented in the draft report to evaluate whether the nature and extent of the contamination has been delineated. DEC will identify at that point if sufficient information has been gathered to determine the fate and transport of contamination over time. Data gaps may persist after the RA effort due to this oversight. DEC issued a partial approval of the Final Work Plan.	Tim Sharp
7/11/2023	Long Term Monitoring Workplan or Report Review	DEC has completed a review of the Draft 2022 Groundwater Monitoring Report for Operable Unit 1 (OU1), which presents the results of groundwater monitoring conducted at the 801 Drum Burial Site in OU1. This sampling was performed in accordance with the Record of Decision (ROD) selected remedy. Nine temporary wells were sampled in August 2022, and nine total wells (three permanent wells and six temporary wells) were sampled in September 2022. Groundwater samples were analyzed for gasoline and diesel range organics (GRO, DRO), volatile organic compounds (VOCs), organochlorine pesticides, and dissolved iron, manganese, and sulfate. Contaminant concentrations detected in groundwater samples were less than the risk-based remedial goals (RGs), with the exception of dieldrin in two wells. Three additional permanent wells are recommended for installation near three of the temporary well locations to more fully characterize the dieldrin contaminant plume.	Tim Sharp
9/11/2023	Document, Report, or Work plan Review - other	DEC reviewed the Draft 2022 Institutional Controls (IC) Report, which details the 2022 IC inspections conducted at Fort Wainwright, Alaska (FWA). The purpose of the annual IC inspection is to evaluate the implementation and effectiveness of ICs associated with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) source areas and Two-Party source areas on FWA.	Tim Sharp
11/15/2023	Long Term Monitoring Workplan or Report Review	DEC approved the Final 2022 Monitoring Report on this date.	Tim Sharp
2/22/2024	Document, Report, or Work plan Review - other	DEC completed a review of the Draft 2024 CERCLA Sites Work Plan for Operable Units 1-6. The work plan details proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit (OUs) sites on Fort Wainwright, Alaska (FWA). In addition to sampling, institutional controls inspections will be conducted at all six OU sites. This work plan is intended for use in conjunction with the Quality Assurance Project Plan (QAPP) included in the document as Appendix A, and includes additional sampling as part of preparation for the Sixth Five Year Review, to be accomplished in 2025.	Tim Sharp
4/1/2024	Document, Report, or Work plan Review - other	DEC completed a review of the Draft 2024 Memorandum Work Plan for OU1 Drum Burial Site Monitoring Well Installation and Sampling. The work plan details a summary of results from the activities at the OU1 Drum Burial Site in 2023, as well as proposed installation of up to four permanent monitoring wells at the site and removal of current temporary wells to evaluate the extent of groundwater contamination at the site.	Tim Sharp
4/8/2024	Institutional Control Periodic Reporting	DEC Approved the 2022 IC Report for Fort Wainwright CERCLA and Two-Party Sites on this day.	Tim Sharp
5/15/2024	Document, Report, or Work plan Review - other	DEC has completed a review of the Draft 2023 Operable Unit 1 (OU1) Monitoring Report. The report presents the results of groundwater monitoring conducted at the 801 Drum Burial Site OU1. This sampling was performed in accordance with the Record of Decision (ROD) selected remedy. Groundwater samples were collected from six monitoring wells during the June 2023 sampling event to include three newly installed monitoring wells. Groundwater samples were analyzed for gasoline and diesel range organics (GRO, DRO), volatile organic compounds (VOCs), organochlorine pesticides, and dissolved iron, manganese, and sulfate. Contaminant concentrations detected in groundwater samples were less than the risk-based remedial goals (RGs), with the exception of dieldrin in two wells and aldrin in one well. The report recommends continued groundwater sampling on an annual basis for selected wells and on a five-year basis for all wells otherwise. Further evaluation of petroleum, oil, and lubricant (POL) contamination is recommended due to increased detections in downgradient wells, potentially indicating an expanding source.	Tim Sharp
5/21/2024	Long Term Monitoring Workplan or Report Review	DEC approved the 2024 CERCLA Sites Work Plan on this date.	Tim Sharp
6/7/2024	Document, Report, or Work plan Review - other	DEC completed a backcheck of the Final 2024 Memorandum Work Plan for OU1 Drum Burial Site Monitoring Well Installation and Sampling. The work plan was approved.	Tim Sharp
6/10/2024	Institutional Control Periodic Reporting	DEC reviewed and supplied comments on the Draft 2023 Institutional Controls (IC) Report, which details the 2023 IC inspections conducted at Fort Wainwright, Alaska (FWA). The purpose of the annual IC inspection is to evaluate the implementation and effectiveness of ICs associated with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) source areas and Two-Party source areas on FWA.	Tim Sharp
8/27/2024	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conservation (DEC) has reviewed the response to comments (RTCs) for the OU1 2023 Groundwater Annual Monitoring Report which details groundwater sampling activities at the 801 Drum Burial Site within Operable Unit (OU) 1 at Fort Wainwright, Alaska, during June 2023. This document also provides a summary of the institutional control (IC) inspections conducted at the 801 Drum Burial Site in 2023. On August 27th, 2024 DEC approved Army's RTCs and requested final version of the document for approval.	Carly Jensen
10/16/2024	Document, Report, or Work plan Review - other	The final RSLO version of the 2023 Monitoring Report 801 Drum Burial Site, Operable Unit 1 Wainwright, Alaska was received on September 30, 2024. The final document describes groundwater sampling activities at the 801 Drum Burial Site within Operable Unit (OU) 1 at Fort Wainwright, Alaska, during June 2023. This document also provides a summary of the institutional control (IC) inspections conducted at the 801 Drum Burial Site in 2023. This final version the document has been requested.	Carly Jensen
12/2/2024	Document, Report, or Work plan Review - other	The final version of the 2023 Monitoring Report 801 Drum Burial Site, Operable Unit 1 Wainwright, Alaska was received on November 01, 2024. The final document describes groundwater sampling activities at the 801 Drum Burial Site within Operable Unit (OU) 1 at Fort Wainwright, Alaska, during June 2023. This document also provides a summary of the institutional control (IC) inspections conducted at the 801 Drum Burial Site in 2023. All responses to comments have been addressed in the final document and are accepted. This document is now approved.	Carly Jensen
1/3/2025	Institutional Control Compliance Review	The Alaska Department of Environmental Conservation (DEC) has reviewed the Final 2023 Institutional Controls Report 1 January through December 2023 which the assessment to evaluate the ongoing effectiveness of institutional controls (ICs) associated with Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) source areas and Two-Party source areas on Fort Wainwright, Alaska. All responses to comments have been incorporated or closed out in the final documents and are accepted. This document is now approved	Carly Jensen
2/28/2025	Long Term Monitoring Workplan or Report Review	The Alaska Department of Environmental Conservation (DEC) received the Draft 2025 CERCLA Sites on January 10, 2025 for review. The Draft 2025 CERCLA Work Plan details proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit (OUs) sites on Fort Wainwright, Alaska (FWA). In addition to sampling, institutional controls inspections will be conducted at all six OU sites. This work plan is intended for use in conjunction with the Quality Assurance Project Plan (QAPP) included in the document as Appendix A. DEC completed the review and submitted initial comments to Army on February 28. 2025.	Carly Jensen
3/17/2025	Long Term Monitoring Workplan or Report Review	The Alaska Department of Environmental Conservation received Army's Response to Comments (RTCs) on March 13, 2025 for the Draft 2025 CERCLA Sites Work Plan. Upon review DEC accepted proposed changes or closed out original comments. Approval of the RTCs was sent to Army on March 17, 2025 with request for final version of document.	Carly Jensen
3/19/2025	Document, Report, or Work plan Review - other	DEC reviewed and provided comment on the Draft 2024 Monitoring Report 801 Drum Burial Site, Operable Unit 1 (OU1). The report presents the results of groundwater monitoring conducted at OU1 during the June 2024 sampling event. Groundwater samples were analyzed for gasoline and diesel range organics (GRO, DRO), volatile organic compounds (VOCs), organochlorine pesticides, and dissolved iron, manganese, and sulfate. Contaminant concentrations detected in groundwater samples were less than the risk-based remedial goals (RGs), with the exception of dieldrin in seven wells and aldrin in one well. One well also exceeded DEC groundwater cleanup levels for DRO and benzene.	Juliana Smit
4/7/2025	Institutional Control Compliance Review	The Alaska Department of Environmental Conservation (DEC) received the Draft 2024 Institutional Controls Report, 1 January through 31 December 2024 on March 19, 2025. DEC has reviewed the Institutional Controls (IC) Report, which details the 2024 IC inspections conducted at Fort Wainwright, Alaska. The purpose of the annual IC inspection is to evaluate the implementation and effectiveness of ICs associated with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) source areas and Two-Party source areas on Fort Wainwright. Based on the review of the IC Report, DEC provided Army with comments on April 7, 2025.	Carly Jensen
4/16/2025	Document, Report, or Work plan Review - other	DEC provided responses to comments to the Army on the Draft 2024 Monitoring Report 801 Drum Burial Site, Operable Unit 1 (OU1). The report presents the results of groundwater monitoring conducted at OU1 during the June 2024 sampling event.	Juliana Smit
4/29/2025	Document, Report, or Work plan Review - other	DEC provided approval of the Final 2025 CERCLA Sites Work Plan Operable Units 1 through 6 Fort Wainwright, Alaska, dated April 2025. This work plan details proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit (OUs) sites on Fort Wainwright, Alaska (FWA). In addition to sampling, institutional controls inspections will be conducted at all six OU sites. This work plan is intended for use in conjunction with the Quality Assurance Project Plan (QAPP) included in the document.	Juliana Smit
5/2/2025	Document, Report, or Work plan Review - other	DEC reviewed and provided comment on the Draft Remedial Action Report 2023 OU1 801 Drum Burial Site, dated April 2025. The report presents the results of remedial actions conducted at the 801 Drum Burial Site Operable Unit 1 (OU1) in 2023 and 2024. This sampling was performed in accordance with the Final Remedial Action Work Plan 2023 OU1 Drum Burial Site, dated June 2023 (UFP-QAPP). A geophysical investigation of the drum burial site revealed over 40 geophysical anomalies that were subsequently investigated and removed from the site. Over 100 primary analytical soil samples were collected after the removal of drums and various debris. Additionally, eight temporary and four permanent monitoring wells were installed and sampled in 2023 and twice in 2024. The groundwater and soil samples were tested for gasoline, diesel, and residual range organics, volatile and semi-volatile organic compounds, herbicides, pesticides, and polychlorinated biphenyls. Contaminant concentrations detected in groundwater and soil samples were less than the project action levels. However, there are data quality issues that prevent the site from being fully characterized, including the lack of comparing soil sample results to DEC migration to groundwater clean up levels as was stated in the UFP-QAPP.	Juliana Smit
5/9/2025	Document, Report, or Work plan Review - other	DEC approved the final 2024 Monitoring Report 801 Drum Burial Site, Operable Unit 1 (OU1). The report presents the results of groundwater monitoring conducted at OU1 during the June 2024 sampling event. Groundwater samples were analyzed for gasoline and diesel range organics (GRO, DRO), volatile organic compounds (VOCs), organochlorine pesticides, and dissolved iron, manganese, and sulfate. Contaminant concentrations detected in groundwater samples were less than the risk-based remedial goals (RGs), with the exception of dieldrin in seven wells and aldrin in one well. One well also exceeded DEC groundwater cleanup levels for DRO and benzene.	Juliana Smit

Action Date

Action

Description

DEC Staff

8/25/1992

Update or Other Action

(Old R:Base Action Code = FI - Field Inspection (General)). Site visit. Excavation and removal of 5 drums as of noon. (1) full runny tar-like substance. Site is Level C protection.

Rielle Markey

9/23/1992

Update or Other Action

(Old R:Base Action Code = FI - Field Inspection (General)). Site visit, drum removal complete. Total 92 drums removed. 2 soil samples.

Ronan Short

2/9/1993

Update or Other Action

(Old R:Base Action Code = FI - Field Inspection (General)). Report results from removal action August 92. Sampling and analyses from 3 sites.

Ronan Short

6/11/1993

Update or Other Action

(Old R:Base Action Code = SI - Site Investigation). Final Report, "Drummed Waste Removal" received 2-9-93, 3 volumes in white binders placed in NRO library 6-11-93. NFAs proposed for these areas.

Ronan Short

8/6/1993

Update or Other Action

(Old R:Base Action Code = SA2R - Phase II SA Review (CS)). Workplan received for 801 Drum Burial site; OU-2, PSE2. See also 108.38.014, 1168 also in this report. Support work.

Ronan Short

2/22/1994

Update or Other Action

(Old R:Base Action Code = SA2R - Phase II SA Review (CS)). PSE2 completed after OHM Corp. performed Removal Action under CERCLA in 9/92. This is Support Work document. GRO, DRO, BTEXs, VOCs and Insecticides Aldrin and Dieldrin found above ADEC Clean-up levels and threshold concentration respectively. HLA recommends RI/FS process for remediation of this site.

Ronan Short

5/16/1994

Update or Other Action

(Old R:Base Action Code = RPL2 - Site Information Request Letter). Sent PRP-CS Database Notification Letter to Cristal Fosbrook requesting update/confirmation of information concerning the contaminated site.

Jeff Peterson

8/10/1994

Update or Other Action

(Old R:Base Action Code = MP - Management Plan (CERCLIS)). Draft Field Sampling Plan (for RI/FS) and RI/FS Draft Management Plan received this date. Prepared by ENSR. Community Relations Plan for OU1 received this date. Prepared by ENSR.

Ronan Short

11/16/1994

Update or Other Action

(Old R:Base Action Code = MP - Management Plan (CERCLIS)). Draft Final Management Plan by ENSR. Draft Final CRP by ENSR.

Ronan Short

11/16/1994

Update or Other Action

(Old R:Base Action Code = MP - Management Plan (CERCLIS)). Site transferred to OU1 and included in MP for OU1. Expanded GPR performed by CRREL in fall '94.

Ronan Short

12/23/1994

Site Ranked Using the AHRM

Initial ranking.

Jeff Peterson

1/17/1995

Update or Other Action

Post-wide Risk Assessment Approach Document received this date. Comments by RM. Document prepared by HLA.

Ronan Short

3/8/1995

Site Characterization Workplan Approved

(Old R:Base Action Code = MP - Management Plan (CERCLIS)). Received revised draft final of OU1 M-Plan prepared by ENSR. Five sites in OU1.

Ronan Short

1/29/1996

Update or Other Action

"Groundwater Sampling for Storage Tank Sites, Report of Findings", Volumes 1 and 2, received 01/29/96.

Ronan Short

5/24/1996

Risk Assessment Report Approved

Draft Human Health Risk Assessment, OU-1.

Rielle Markey

6/1/1996

Update or Other Action

(Old R:Base Action Code = FS - Feasibility Study (General)). Draft Feasibility Study, OU-1, Fort Wainwright, Alaska, Building 2077, Building 1599, received 7/1/1996.

Rielle Markey

6/1/1996

Update or Other Action

(Old R:Base Action Code = RI - Remedial Investigation). Final Remedial Investigation Report, OU-1, Fort Wainwright, Alaska, received 7/9/1996, Draft/Final Redline.

Rielle Markey

8/1/1996

Update or Other Action

Review Response, Draft Final RI Report, OU-1 Fort Wainwright, received 8/12/1996.

Rielle Markey

8/1/1996

Update or Other Action

(Old R:Base Action Code = RI - Remedial Investigation). Final OU-1 Remedial Investigation Report, received 8/12/1996.

Rielle Markey

9/16/1996

Site Characterization Report Approved

(Old R:Base Action Code = RI - Remedial Investigation). Final, Remedial Investigation Report, OU-1, document date September 1, 1996.

Rielle Markey

10/24/1996

Site Added to Database

Peer Review held. ADEC recommended actions, further investigation for drums, and GW monitoring.

Rielle Markey

2/1/1997

Proposed Plan

Proposed Plan completed for this OU.

Rielle Markey

3/26/1997

Update or Other Action

Site updated by Shannon and Wilson, based on the Army Defense Site Environmental Restoration Tracking System dated 11/8/96. The worksheet indicates 140 ppb benzene and various other compounds (including pesticides) in groundwater, and pesticides in sediment and soil.

S&W

4/8/1997

Update or Other Action

Received Draft workplan for rhizosphere enhanced phytoremediation Treatment Study.

Rielle Markey

4/14/1997

Update or Other Action

Received Transmittal of ADEC 1996 quarterly well sampling at 801 drum burial site.

Rielle Markey

6/27/1997

Record of Decision

ROD signed by all three parties. This site requires further action under CERCLA.

Rielle Markey

6/27/1997

Cleanup Level(s) Approved

Remedial Action Objectives in surface and subsurface soil are 3.8 mg/kg for Aldrin. 4.0 mg/kg dieldrin. Groundwater is Aldrin .004 ug/l, Dieldrin .004 ug/l, 1,1-dichloroethene 7 ug/l, benzene 5 ug/l, and vinyl chloride 2 ug/l.

Rielle Markey

6/27/1997

Institutional Control Record Established

Institutional controls involve access and use limitations that require maintenance of institutional boundaries in an Army GIS database. Action entered by Buck.

Rielle Markey

7/17/1997

Update or Other Action

Received draft work plan for 801 Drum Burial Site.

Rielle Markey

6/27/1999

Long Term Monitoring Established

Long-Term Monitoring of site established as part of remedy.

Rielle Markey

6/27/1999

Update or Other Action

ICs established through Fort Wainwright DPW policies.

Rielle Markey

11/4/1999

Update or Other Action

ROD includes phytoremediation study for aldrin, dieldrin contaminated soils

Rielle Markey

8/14/2000

Update or Other Action

New project manager assigned

Ann Farris

10/17/2000

Update or Other Action

Long-term monitoring GW results reviewed. Comprehensive 16 well sampling event cut back to every three years. Interim years will only sample one well by housing, AP-7163, and one well by Chena River, AP-7282. Approved by EPA and State.

Ann Farris

11/3/2000

Update or Other Action

Preliminary Draft Remedial Action Report, Operable Unit 1, Fort Wainwright, Alaska, August 2000. Action entered by Sarah Riddle

Ann Farris

12/5/2000

Update or Other Action

DoD Rank changed to High based on Comments section of the Problem Comments Tab that states "Site assigned a HIGH site rank on the Army Defense Site Environmental Restoration Tracking System Worksheet dated 11/8/96."

Former Staff

1/25/2001

Update or Other Action

Five-Year Review Scheduled for 2001. Draft Expected in June 2001. Final by September 2001. Staff attended RAB Meeting on January 23 - no significant public comments.

Ann Farris

6/11/2001

Interim Removal Action Approved

Interim Removal Action Report approved by Ann Farris. Action entered by Sarah Riddle.

Ann Farris

9/25/2001

Update or Other Action

Final Five-Year Review Received.

Ann Farris

12/12/2001

Institutional Control Record Established

1. All organizations conducting activities on United States Army Alaska (USARAK) controlled land are responsible for complying with established institutional controls (ICs). ICs are administrative, procedural, and regulatory measures to control human access to and usage of property. They are applicable to all known or suspected contaminated sites where contamination has been left in place. 2. These controls have been established to implement the selected remedial actions agreed upon by the U.S. Army (Army), the U.S. Environmental Protection Agency (USEPA), and the Alaska Department of Environmental Conservation (ADEC) in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as amended by the Superfund Amendment Reauthorization Act (SARA). These controls also apply to remedial actions agreed upon under Two-Party Compliance Agreements. These agreements are concluded between USARAK and ADEC and apply to petroleum/oil/lubricants- (POL) contaminated sites. 3. ICs such as limitations on access, water use, excavations, and property transfers will supplement engineering controls as appropriate for short-term and long-term management to prevent or limit human and environmental exposure to hazardous substances, pollutants, or contaminants. Specific ICs include, among other things: limitations on the depth and location of excavations, prohibition of or restrictions on well drilling and use of ground water, requirements for worker use of personal protective equipment, site monitoring, and prohibition of certain land uses, types of vehicles, etc. 4. Organizational units, tenants, and support/contractor organizations must obtain an Excavation Clearance Request (ECR) for all soil disturbing activities impacting soils six inches or more below the ground surface. The review process for approval of an ECR begins with the identification of the current status (known or suspected hazardous waste site or “clean” site) of a work location. ECR’s for work in known or suspected hazardous waste sites: a. will include specific limitations and controls on such work; b. will include specific IC procedures, and notification, monitoring, reporting, and stop work requirements; c. may include procedures for management, characterization, and disposal of any soil or groundwater encountered or removed; d. will identify “project managers” for both the unit/contractor requesting the work and DPW Environment Resources. 5. The DPW project manager will conduct on-site inspections of each work site (at which ICs apply) to determine continued compliance with the terms and conditions of the approved ECR. DPW has the authority to revoke ECR approval if the specified terms and conditions are not being met. ECR forms are available at the Customer Service Desks at: a. Building 730 at Fort Richardson; b. Building 3015 at Fort Wainwright; c. Building 605 at Fort Greely. 6. USARAK has negotiated (with USEPA and/or ADEC) decision documents and/or Records of Decision (RODs) that mandate the implementation of ICs USARAK Directorate of Public Works, Environmental Resources Department (PWE), maintains copies of all decision documents and RODs requiring ICs in its real property files. PWE provides regularly updated post maps showing all areas affected by ICs. These maps can easily be accessed by using an approved intranet mapping interface application. Copies of these maps will be available to each directorate, activity, and tenant organization. To ensure the effectiveness of ICs, all organizational units and tenant activities will be informed on an annual basis of ICs on contaminated soils and groundwater in effect near their facilities. 7. ICs are enforceable by the U.S. Environmental Protection Agency (USEPA) and the Alaska Department of Environmental Conservation (ADEC). Failure to comply with an IC mandated in a decision document or ROD will violate the USARAK Federal Facility Agreement and may result in stipulated fines and penalties. This does not include the costs of corrective actions required due to violation of an established IC.

Sharon Richmond

10/30/2002

Update or Other Action

Memo from EPA, RPMs agreed to not amend the ROD to include cis-1,2-Dichlorethene but continue to sample for the contaminant

Patrice Buck

3/20/2003

Site Number Identifier Changed

Changed Workplan from X1 to X9 due to the presence of hazardous substances at the site.

Former Staff

7/16/2003

Meeting or Teleconference Held

Fort Wainwright Restoration Advisory Board held it's last meeting on July16, 2003.

Patrice Buck

3/4/2004

Long Term Monitoring Established

Staff has completed a review of the Draft Report CLOSES Evaluation 801 Drum Burial Site for Operable Unit 1, Fort Wainwright. The pesticides aldrin and dieldrin are the only remaining soil and groundwater contaminants of concern (COCs) above cleanup levels established in the Record of Decision. The report presents information from long term monitoring results to show that the contamination plume is stable and not migrating towards the Chena River. The report recommends modifying the groundwater monitoring to reduce the number of wells sampled and the frequency of sampling events. Under this proposal, sampling will be conducted once every five years and only those wells critical to evaluating natural attenuation will be sampled.

Patrice Buck

11/2/2004

Update or Other Action

2003 annual monitoring report approved. Very little change in contaminant concentrations since last sampling. A long-term groundwater monitoring plan is in place.

Sharon Richmond

3/8/2005

Site Characterization Report Approved

The ARmy successfully excavated about 950 cubic yards of contaminated soil and encapsulated it in a cell at the FTWW landfill. Report approved.

Sharon Richmond

3/9/2005

Interim Removal Action Approved

Contaminated Sites staff reviewed and approved the Draft Removal Action Report for the Phytoremediation Study Site Decommissioning for Fort Wainwright. Approximately 950 cubic yards of soil contaminated with DDT, DDD, aldrin and dieldrin was excavated from a former drum burial site. A phytoremediation treatability study was carried out on the excavated soil but was discontinued after four years because it was not effective. The treatment cells were dismantled and transported to a lined containment cell at the Fort Wainwright Landfill. Following excavation, contamination remained in several locations. Additional soil was excavated and transported to the landfill. Final confirmation samples met all applicable cleanup levels. A long-term groundwater monitoring plan is in place and it appears that this site will require no further remedial action.

Sharon Richmond

3/10/2005

Site Characterization Report Approved

Contaminated Sites staff reviewed and approved a draft 2004 Groundwater Monitoring Report for the 801 Drum Burial Site on Ft. Wainwright. Low concentrations of dieldrin remain in groundwater. Moderate concentrations of cis-dichloroethene have persisted at one monitoring well. Staff recommended installing an upgradient monitoring well to determine if there is a source area in the 801 Housing Area that might affect indoor air quality.

Sharon Richmond

7/6/2005

Institutional Control Record Established

Contaminated soil from the phytoremediation pilot study was disposed of in the Fort Wainwright landfill. The soil was encapsulated and covered with a cap. The cap will be inspected annually.

Sharon Richmond

8/18/2005

Site Characterization Report Approved

Staff approved the Draft 2005 Annual Groundwater Monitoring Report and the recommendation to monitor every 5 years with samplings scheduled to conincide with the 5-year review.

Sharon Richmond

11/16/2005

Meeting or Teleconference Held

ADEC attended the regularly scheduled FFA meeting with the Army, the EPA, Corps, and consultants. Groundwater sampling results were presented at the April FFA meeting. Low concentrations of aldrin, dieldrin, and cis-DCE persist. Draft 2004 and Draft 2005 Annual Reports need to finalized. Next sampling event is scheduled for 2010 and will coincide with the next Five-Year Review.

Sharon Richmond

11/16/2005

Meeting or Teleconference Held

Removal Action Report was finalized in September for the Phytoremediation soils. Two holes were found in the soil cap on the soil storage celss in April 2005. The underlying liner was 'ballooning' in these areas. Vents will be installed to permit off-gassing after soil thaws next season.

Sharon Richmond

12/21/2005

Update or Other Action

Staff reviewed the Phytoremediation Study Site Decommissioning Report. Approximately 850 cy of soil were removed and placed into four treatment cells. The soil was treated by phytoremediation. After 4 seasons, it was determined that this approach was ineffective and the soil was subsequently transported to a lined containment cell at the Fort Wainwright landfill. The cell is periodically inspected to ensure that liner and cover remain intact.

Sharon Richmond

10/24/2006

Update or Other Action

File name changed from FTWW to Fort Wainwright, per Project Manager.

April Woolery

3/5/2008

Exposure Tracking Model Ranking

Initial ranking with ETM completed.

Sharon Richmond

5/13/2008

Update or Other Action

Staff approved work plan to resume monthly inspection of the OU1 Drum Burial phytoremediation soil cell at the landfill. The cell is inspected monthly when the ground is not frozen. The soil cell containing low-level pesticides will be inspected to make sure that vents are in good order, repaired if necessary, and the cap is intact. Vents will be closed when the soil freezes inthe fall.

Sharon Richmond

5/13/2010

Document, Report, or Work plan Review - other

A draft groundwater monitoring work plan in support of the upcoming five-year review was reviewed. Significant comment was sent to the Army as the only wells planned for sampling were not within the source area.

Debra Caillouet

6/18/2010

Document, Report, or Work plan Review - other

OU1 801 Drum Burial Site Technical Memorandum, Groundwater Sampling and Analysis, June 2010

Debra Caillouet

7/13/2010

Document, Report, or Work plan Review - other

Final 2010 Work Plan, Groundwater Monitoring at the 801 Drum Burial Site, Operable Unit 1, Fort Wainwright, July 2010

Debra Caillouet

3/16/2011

Document, Report, or Work plan Review - other

Draft 2010 Monitoring Report, Groundwater Monitoring at the 801 Drum Burial Site, Operable Unit 1, Fort Wainwright, March 2011

Debra Caillouet

4/18/2011

Document, Report, or Work plan Review - other

2010 Monitoring Report, Groundwater Monitoring at the 801 Drum Burial Site, Operable Unit 1, Fort Wainwright, March 2011. The report recommends continuing the groundwater sampling on a five-year basis at the eight monitoring wells included in this event. It recommends adding VOC analysis for AP-6326 and decommissioning of eight monitoring wells at the site that are no longer used. DEC concurs with these recommendations.

Debra Caillouet

12/9/2011

Document, Report, or Work plan Review - other

OU1 801 Drum Burial Site Groundwater Sampling and Analysis After-Action Report, (Draft Revision 1). Report has resampling at the correct depth for the deep well.

Debra Caillouet

9/1/2015

Update or Other Action

Transferred to Fairbanks

Susan Carberry

12/13/2016

Meeting or Teleconference Held

A two day Federal Facilities Agreement (FFA) and Stakeholders meeting was held on December 13 & 14, 2016. The main focus of the meeting was to develop a site discovery and site intake process that would satisfy requirements of the Fort Wainwright FFA, RCRA Permit, and two party agreements. The Army, EPA and DEC committed to a flowchart of the preliminary source evaluation process. Timelines were established for scoping a land use control implementation plan (LUCIP) and developing a contracting schedule for Fort Wainwright contaminated site investigations and remedial actions. Seven sites were proposed for inclusion into the FFA (three party agreement) by the Army and the RPMs documented the assignment of the regulatory path for these sites using a newly developed and agreed to signature form.

Dennis Shepard

1/1/2017

Document, Report, or Work plan Review - other

DEC approved the 2015 Annual Institutional Controls Report, Fort Wainwright, Alaska (August 2016).

Dennis Shepard

8/1/2019

Document, Report, or Work plan Review - other

DEC approved the Final 2019 CERCLA Sites Work Plan Operable Units 1 through 6 (Dated July 2019). DEC provided a conditional approval on April 15, 2019 so the contractor could begin the 2019 groundwater sampling in advance of finalizing this work plan addendum. Review comments for the draft version of the document was provided on April 26, 2019. The document was prepared to help guide the site activities, data review, and reporting tasks for work conducted at Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) sites on Fort Wainwright, Alaska (FWA) during the 2019 field season. The U.S. Army Garrison (USAG) Alaska CERCLA sites associated with this Work Plan include Operable Units (OUs) 1 through 6.

Erica Blake

1/8/2020

Document, Report, or Work plan Review - other

DEC approved the 2019 OU1 Monitoring Report, Drum Burial Site, Operable Unit 1, U.S. Army Garrison Alaska (dated December 2019). The report describes 2019 groundwater sampling results. Monitoring wells were sampled for pesticides, gasoline range organics (GRO), diesel range organics (DRO), volatile organic compounds (VOCs), dissolved iron and manganese, and sulfate. The boundary wells had dieldrin exceedances, which indicates the dieldrin plume may not be fully delineated. Increasing the sampling frequency for pesticides at the boundary wells and installing additional monitoring wells in the Birchwood Homes property to define the dieldrin plume was recommended.

Erica Blake

7/28/2020

Document, Report, or Work plan Review - other

DEC approved the Final 2020 CERCLA Site Work Plan Operable Units 1 through 6 Fort Wainwright, Alaska (dated July 2020). The document was prepared to guide site activities, data review, and reporting tasks for work conducted at Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) sites on Fort Wainwright, Alaska (FWA). CERCLA sites covered by this work plan include Operable Units (OUs) 1 through 6. All six OUs will also be included in the annual institutional controls (IC) inspection.

Erica Blake

2/11/2021

Offsite Soil or Groundwater Disposal Approved

ADEC approved 280 gallons of purge water generated from six sites (Bldg 3570, OU1, OU2 (DRMO1 and DRMO4), OU4 Landfill, OU5 EQFS, and OU6) on Fort Wainwright, Alaska to be transported from the Fort Wainwright hazardous waste facility (Building 3489) to U.S. Ecology in Grand View, Idaho. The purge water was generated from groundwater sampling activities on Fort Wainwright during the 2020 field season.

Erica Blake

4/16/2021

Document, Report, or Work plan Review - other

DEC approved the Final 2020 Monitoring Report 801 Drum Burial Site, Operable Unit 1, Fort Wainwright, Alaska (dated April 2021). The report describes the results from the 2020 groundwater sampling. Groundwater samples were collected from three downgradient wells, and samples were analyzed for organochlorine pesticides, volatile organic compounds (VOCs), gasoline range organics (GRO), diesel range organics (DRO), dissolved iron and manganese, and sulfate. Dieldrin and aldrin continue to persist at concentrations above the Record of Decision (ROD) remedial action goal (RAG). Continued monitoring of these wells is recommended to build a data set for trend analysis. Continued annual monitoring at this site is expected.

Erica Blake

6/15/2021

Document, Report, or Work plan Review - other

ADEC provided review comments for the "Draft 2021 CERCLA Sites Work Plan Operable Units 1 through 6, Fort Wainwright, Alaska" (dated May 2021) to the U.S. Army. The document describes proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at the six Operable Unit (OU) sites on Fort Wainwright, Alaska (FWA). In addition to sampling activities, institutional control (IC) inspections will be conducted.

Erica Blake

6/21/2021

Document, Report, or Work plan Review - other

ADEC provided responses to comments for the "Draft 2021 CERCLA Sites Work Plan Operable Units 1 through 6, Fort Wainwright, Alaska" dated May 2021 to the U.S. Army. Review comments were provided on June 15, 2021, and responses were received and reviewed June 21, 2021. A final version of the work plan has been requested, upon receipt of the final ADEC will be able to provide approval. The document is a work plan with proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit (OU) sites (OU1 through OU6) on Fort Wainwright, Alaska.

Erica Blake

7/19/2021

Document, Report, or Work plan Review - other

ADEC provided review comments for the "Draft-Final Fifth Five-Year Review Report, Fort Wainwright Fairbanks, Alaska" to the U.S. Army. The document is the fifth Five-Year Review for Fort Wainwright. The remedies at six Operable Units were evaluated.

Erica Blake

7/30/2021

Document, Report, or Work plan Review - other

ADEC provided approval for the "Final 2021 CERCLA Sites Work Plan Operable Units 1 through 6, U.S. Army Garrison Alaska" (dated July 2021) to the U.S. Army. The document describes site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit sites on Fort Wainwright, Alaska (FWA).

Erica Blake

8/26/2021

Document, Report, or Work plan Review - other

ADEC provided responses to comments for the "Draft-Final Fifth Five-Year Review Report, Fort Wainwright Fairbanks, Alaska" to the U.S. Army. The Fifth Five-Year Review document evaluated the protectiveness at six Operable Unit sites.

Erica Blake

10/6/2021

Document, Report, or Work plan Review - other

ADEC provided an acknowledgement of receipt letter for the "Final Fifth Five-Year Review Report, Fort Wainwright Fairbanks, Alaska" (undated) to the U.S. Army. The FYR report describes and evaluates the implementation of performance remedies in place at six Operable Units (OUs) on Fort Wainwright, Alaska (OUs 1, 2, 3, 4, 5 and 6). ADEC does not concur with the protectiveness determinations in the final FYR report.

Erica Blake

3/18/2022

Document, Report, or Work plan Review - other

ADEC provided review comments for the "Draft 2022 CERCLA Sites Work Plan Operable Units 1 through 6" Fort Wainwright, Alaska, U.S. Army Garrison Alaska (dated February 2022) to the U.S. Army. The document describes proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit sites on Fort Wainwright, Alaska (FWA). This work plan is intended for use in conjunction with the "Draft Fort Wainwright Environmental Investigations and Monitoring Postwide Quality Assurance Program Plan Fort Wainwright, Alaska" (dated December 2021). The post wide work plan is still in review and at the time of this review has not yet been approved.

Erica Blake

5/24/2022

Offsite Soil or Groundwater Disposal Approved

ADEC approved transport of approximately 247 gallons of purge water generated from long-term monitoring activities conducted in 2021 (from Neely Rd - Two-Party Site, OU1, OU2-DRMO1 & DRMO4, OU4, OU5-WQFS & EQFS, and OU6) from Fort Wainwright Bldg 3491 to U.S. Ecology in Grand View, Idaho.

Erica Blake

8/23/2022

Site Visit

ADEC, Army, USACE, USAEC, EPA conducted a site visit of 1599, 801 Drum Burial Site, Beacon Tower Landfill, some construction sites (namely the Aquatics Center construction adjacent to the Oak Avenue Pipeline, and the North Town Sink Hole. Additionally, scoping for the August VI sampling efforts at 1060 and 3030 were discussed.

Tim Sharp

2/17/2023

Document, Report, or Work plan Review - other

DEC submitted comments on the Draft 801 Drum Burial Site Remedial Action Work Plan. The work plan proposes geophysical surveying and ensuing removal and disposal of buried drums, metal debris, and contaminated soil. In addition, the Army will sample groundwater to determine the presence or absence of contamination. DEC's commented on the draft document that the Army is not following the state's interpretation of federal regulations that require the Army to delineate contamination to DEC's most stringent cleanup levels.

Tim Sharp

3/13/2023

Update or Other Action

DEC approved the geophysics work for 2023 could go ahead without a fully approved site characterization work plan as it is non-invasive (i.e. will not disturb the soil) and EPA has given provisional approval as well. The work plan will be finalized on an expedited schedule.

Tim Sharp

6/9/2023

Site Characterization Workplan Approved

DEC completed a backcheck of the Final Remedial Action Work Plan for the OU1 801 Drum Burial Site. One comment on the draft work plan requested contaminants in soil to be delineated to at least the most stringent of DEC’s promulgated cleanup levels, typically the migration to groundwater cleanup levels. DEC recognizes the importance of the intended field sampling, and the Army’s commitment to ensure analytical methods have limits of detection that are able to achieve the DEC migration to groundwater cleanup levels. As the Army did not identify the fate and transport model that will be used to evaluate the migration to groundwater pathway, DEC will evaluate the results of this field effort as presented in the draft report to evaluate whether the nature and extent of the contamination has been delineated. DEC will identify at that point if sufficient information has been gathered to determine the fate and transport of contamination over time. Data gaps may persist after the RA effort due to this oversight. DEC issued a partial approval of the Final Work Plan.

Tim Sharp

7/11/2023

Long Term Monitoring Workplan or Report Review

DEC has completed a review of the Draft 2022 Groundwater Monitoring Report for Operable Unit 1 (OU1), which presents the results of groundwater monitoring conducted at the 801 Drum Burial Site in OU1. This sampling was performed in accordance with the Record of Decision (ROD) selected remedy. Nine temporary wells were sampled in August 2022, and nine total wells (three permanent wells and six temporary wells) were sampled in September 2022. Groundwater samples were analyzed for gasoline and diesel range organics (GRO, DRO), volatile organic compounds (VOCs), organochlorine pesticides, and dissolved iron, manganese, and sulfate. Contaminant concentrations detected in groundwater samples were less than the risk-based remedial goals (RGs), with the exception of dieldrin in two wells. Three additional permanent wells are recommended for installation near three of the temporary well locations to more fully characterize the dieldrin contaminant plume.

Tim Sharp

9/11/2023

Document, Report, or Work plan Review - other

DEC reviewed the Draft 2022 Institutional Controls (IC) Report, which details the 2022 IC inspections conducted at Fort Wainwright, Alaska (FWA). The purpose of the annual IC inspection is to evaluate the implementation and effectiveness of ICs associated with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) source areas and Two-Party source areas on FWA.

Tim Sharp

11/15/2023

Long Term Monitoring Workplan or Report Review

DEC approved the Final 2022 Monitoring Report on this date.

Tim Sharp

2/22/2024

Document, Report, or Work plan Review - other

DEC completed a review of the Draft 2024 CERCLA Sites Work Plan for Operable Units 1-6. The work plan details proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit (OUs) sites on Fort Wainwright, Alaska (FWA). In addition to sampling, institutional controls inspections will be conducted at all six OU sites. This work plan is intended for use in conjunction with the Quality Assurance Project Plan (QAPP) included in the document as Appendix A, and includes additional sampling as part of preparation for the Sixth Five Year Review, to be accomplished in 2025.

Tim Sharp

4/1/2024

Document, Report, or Work plan Review - other

DEC completed a review of the Draft 2024 Memorandum Work Plan for OU1 Drum Burial Site Monitoring Well Installation and Sampling. The work plan details a summary of results from the activities at the OU1 Drum Burial Site in 2023, as well as proposed installation of up to four permanent monitoring wells at the site and removal of current temporary wells to evaluate the extent of groundwater contamination at the site.

Tim Sharp

4/8/2024

Institutional Control Periodic Reporting

DEC Approved the 2022 IC Report for Fort Wainwright CERCLA and Two-Party Sites on this day.

Tim Sharp

5/15/2024

Document, Report, or Work plan Review - other

DEC has completed a review of the Draft 2023 Operable Unit 1 (OU1) Monitoring Report. The report presents the results of groundwater monitoring conducted at the 801 Drum Burial Site OU1. This sampling was performed in accordance with the Record of Decision (ROD) selected remedy. Groundwater samples were collected from six monitoring wells during the June 2023 sampling event to include three newly installed monitoring wells. Groundwater samples were analyzed for gasoline and diesel range organics (GRO, DRO), volatile organic compounds (VOCs), organochlorine pesticides, and dissolved iron, manganese, and sulfate. Contaminant concentrations detected in groundwater samples were less than the risk-based remedial goals (RGs), with the exception of dieldrin in two wells and aldrin in one well. The report recommends continued groundwater sampling on an annual basis for selected wells and on a five-year basis for all wells otherwise. Further evaluation of petroleum, oil, and lubricant (POL) contamination is recommended due to increased detections in downgradient wells, potentially indicating an expanding source.

Tim Sharp

5/21/2024

Long Term Monitoring Workplan or Report Review

DEC approved the 2024 CERCLA Sites Work Plan on this date.

Tim Sharp

6/7/2024

Document, Report, or Work plan Review - other

DEC completed a backcheck of the Final 2024 Memorandum Work Plan for OU1 Drum Burial Site Monitoring Well Installation and Sampling. The work plan was approved.

Tim Sharp

6/10/2024

Institutional Control Periodic Reporting

DEC reviewed and supplied comments on the Draft 2023 Institutional Controls (IC) Report, which details the 2023 IC inspections conducted at Fort Wainwright, Alaska (FWA). The purpose of the annual IC inspection is to evaluate the implementation and effectiveness of ICs associated with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) source areas and Two-Party source areas on FWA.

Tim Sharp

8/27/2024

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conservation (DEC) has reviewed the response to comments (RTCs) for the OU1 2023 Groundwater Annual Monitoring Report which details groundwater sampling activities at the 801 Drum Burial Site within Operable Unit (OU) 1 at Fort Wainwright, Alaska, during June 2023. This document also provides a summary of the institutional control (IC) inspections conducted at the 801 Drum Burial Site in 2023. On August 27th, 2024 DEC approved Army's RTCs and requested final version of the document for approval.

Carly Jensen

10/16/2024

Document, Report, or Work plan Review - other

The final RSLO version of the 2023 Monitoring Report 801 Drum Burial Site, Operable Unit 1 Wainwright, Alaska was received on September 30, 2024. The final document describes groundwater sampling activities at the 801 Drum Burial Site within Operable Unit (OU) 1 at Fort Wainwright, Alaska, during June 2023. This document also provides a summary of the institutional control (IC) inspections conducted at the 801 Drum Burial Site in 2023. This final version the document has been requested.

Carly Jensen

12/2/2024

Document, Report, or Work plan Review - other

The final version of the 2023 Monitoring Report 801 Drum Burial Site, Operable Unit 1 Wainwright, Alaska was received on November 01, 2024. The final document describes groundwater sampling activities at the 801 Drum Burial Site within Operable Unit (OU) 1 at Fort Wainwright, Alaska, during June 2023. This document also provides a summary of the institutional control (IC) inspections conducted at the 801 Drum Burial Site in 2023. All responses to comments have been addressed in the final document and are accepted. This document is now approved.

Carly Jensen

1/3/2025

Institutional Control Compliance Review

The Alaska Department of Environmental Conservation (DEC) has reviewed the Final 2023 Institutional Controls Report 1 January through December 2023 which the assessment to evaluate the ongoing effectiveness of institutional controls (ICs) associated with Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) source areas and Two-Party source areas on Fort Wainwright, Alaska. All responses to comments have been incorporated or closed out in the final documents and are accepted. This document is now approved

Carly Jensen

2/28/2025

Long Term Monitoring Workplan or Report Review

The Alaska Department of Environmental Conservation (DEC) received the Draft 2025 CERCLA Sites on January 10, 2025 for review. The Draft 2025 CERCLA Work Plan details proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit (OUs) sites on Fort Wainwright, Alaska (FWA). In addition to sampling, institutional controls inspections will be conducted at all six OU sites. This work plan is intended for use in conjunction with the Quality Assurance Project Plan (QAPP) included in the document as Appendix A. DEC completed the review and submitted initial comments to Army on February 28. 2025.

Carly Jensen

3/17/2025

Long Term Monitoring Workplan or Report Review

The Alaska Department of Environmental Conservation received Army's Response to Comments (RTCs) on March 13, 2025 for the Draft 2025 CERCLA Sites Work Plan. Upon review DEC accepted proposed changes or closed out original comments. Approval of the RTCs was sent to Army on March 17, 2025 with request for final version of document.

Carly Jensen

3/19/2025

Document, Report, or Work plan Review - other

DEC reviewed and provided comment on the Draft 2024 Monitoring Report 801 Drum Burial Site, Operable Unit 1 (OU1). The report presents the results of groundwater monitoring conducted at OU1 during the June 2024 sampling event. Groundwater samples were analyzed for gasoline and diesel range organics (GRO, DRO), volatile organic compounds (VOCs), organochlorine pesticides, and dissolved iron, manganese, and sulfate. Contaminant concentrations detected in groundwater samples were less than the risk-based remedial goals (RGs), with the exception of dieldrin in seven wells and aldrin in one well. One well also exceeded DEC groundwater cleanup levels for DRO and benzene.

Juliana Smit

4/7/2025

Institutional Control Compliance Review

The Alaska Department of Environmental Conservation (DEC) received the Draft 2024 Institutional Controls Report, 1 January through 31 December 2024 on March 19, 2025. DEC has reviewed the Institutional Controls (IC) Report, which details the 2024 IC inspections conducted at Fort Wainwright, Alaska. The purpose of the annual IC inspection is to evaluate the implementation and effectiveness of ICs associated with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) source areas and Two-Party source areas on Fort Wainwright. Based on the review of the IC Report, DEC provided Army with comments on April 7, 2025.

Carly Jensen

4/16/2025

Document, Report, or Work plan Review - other

DEC provided responses to comments to the Army on the Draft 2024 Monitoring Report 801 Drum Burial Site, Operable Unit 1 (OU1). The report presents the results of groundwater monitoring conducted at OU1 during the June 2024 sampling event.

Juliana Smit

4/29/2025

Document, Report, or Work plan Review - other

DEC provided approval of the Final 2025 CERCLA Sites Work Plan Operable Units 1 through 6 Fort Wainwright, Alaska, dated April 2025. This work plan details proposed site activities to collect data and evaluate progress towards achieving remedial action objectives (RAOs) at six Operable Unit (OUs) sites on Fort Wainwright, Alaska (FWA). In addition to sampling, institutional controls inspections will be conducted at all six OU sites. This work plan is intended for use in conjunction with the Quality Assurance Project Plan (QAPP) included in the document.

Juliana Smit

5/2/2025

Document, Report, or Work plan Review - other

DEC reviewed and provided comment on the Draft Remedial Action Report 2023 OU1 801 Drum Burial Site, dated April 2025. The report presents the results of remedial actions conducted at the 801 Drum Burial Site Operable Unit 1 (OU1) in 2023 and 2024. This sampling was performed in accordance with the Final Remedial Action Work Plan 2023 OU1 Drum Burial Site, dated June 2023 (UFP-QAPP). A geophysical investigation of the drum burial site revealed over 40 geophysical anomalies that were subsequently investigated and removed from the site. Over 100 primary analytical soil samples were collected after the removal of drums and various debris. Additionally, eight temporary and four permanent monitoring wells were installed and sampled in 2023 and twice in 2024. The groundwater and soil samples were tested for gasoline, diesel, and residual range organics, volatile and semi-volatile organic compounds, herbicides, pesticides, and polychlorinated biphenyls. Contaminant concentrations detected in groundwater and soil samples were less than the project action levels. However, there are data quality issues that prevent the site from being fully characterized, including the lack of comparing soil sample results to DEC migration to groundwater clean up levels as was stated in the UFP-QAPP.

Juliana Smit

5/9/2025

Document, Report, or Work plan Review - other

DEC approved the final 2024 Monitoring Report 801 Drum Burial Site, Operable Unit 1 (OU1). The report presents the results of groundwater monitoring conducted at OU1 during the June 2024 sampling event. Groundwater samples were analyzed for gasoline and diesel range organics (GRO, DRO), volatile organic compounds (VOCs), organochlorine pesticides, and dissolved iron, manganese, and sulfate. Contaminant concentrations detected in groundwater samples were less than the risk-based remedial goals (RGs), with the exception of dieldrin in seven wells and aldrin in one well. One well also exceeded DEC groundwater cleanup levels for DRO and benzene.

Juliana Smit

Contaminant Information

Name	Level Description	Media
Aldrin	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	GroundwaterSoil
Dieldrin	> Table C	SoilGroundwater
Dichloroethene	> Table C	SoilGroundwater

Name

Level Description

Media

Comments

Aldrin

Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation

GroundwaterSoil

Dieldrin

> Table C

SoilGroundwater

Dichloroethene

> Table C

SoilGroundwater

Control Type

Type	Details
Federal or State Agency GIS Database Note
Land Use Plan / Maps / Base Master Plan

Type

Details

Federal or State Agency GIS Database Note

Land Use Plan / Maps / Base Master Plan

Requirements

Description	Details
Excavation / Soil Movement Restrictions
Groundwater Monitoring
Groundwater Use Restrictions
Advance approval required to transport soil or groundwater off-site.
Maintenance / Inspection Of Engineering Controls	Excavated soil placed in a lined and sealed cell at the FTWW Landfill. The cell requires an annual inspection.

Description

Details

Excavation / Soil Movement Restrictions

Groundwater Monitoring

Groundwater Use Restrictions

Advance approval required to transport soil or groundwater off-site.

Maintenance / Inspection Of Engineering Controls

Excavated soil placed in a lined and sealed cell at the FTWW Landfill. The cell requires an annual inspection.

2024 OU1 Groundwater Monitoring Report

2023.11.14 Final_2022 OU1 Annual Monitoring Rpt.pdf

2022.07.05 Final 2021 OU1 Groundwater Monitoring Report

2021.04.12 OU1 Groundwater Monitoring Report

2020.01.08 Operable Unit 1 (OU1) Groundwater Report

June 1997 Operable Unit 1 (OU1) Record of Decision (ROD)

No associated sites were found.

Missing Location Data

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Site Report: Fort Wainwright (OU-1) 801 Drum Burial Site FTWW-067

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

2024 OU1 Groundwater Monitoring Report

2023.11.14 Final_2022 OU1 Annual Monitoring Rpt.pdf

2022.07.05 Final 2021 OU1 Groundwater Monitoring Report

2021.04.12 OU1 Groundwater Monitoring Report

2020.01.08 Operable Unit 1 (OU1) Groundwater Report

June 1997 Operable Unit 1 (OU1) Record of Decision (ROD)

Missing Location Data

State of Alaska Department of Environmental Conservation