Site Report: Fort Greely South Tank Farm

Site Name:	Fort Greely South Tank Farm
Address:	5,000' SW of Family Hous., 4,800' S of Main Post Gat, Fort Greely, AK 99731
File Number:	141.38.043
Hazard ID:	4051
Status:	Active
Staff:	Tim Sharp, 9074512131 tim.sharp@alaska.gov
Latitude:	63.959624
Longitude:	-145.749767
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 South Tank Farm site (also known as the CANOL Pipeline Tank Farm) includes approximately 20 acres on the Fort Greely installation, and is located approximately ¾ miles south of the current main entrance. The original facility consisted of four 420,000-gallon above ground storage tanks and associated piping. Each tank was surrounded on all sides by 5-foot tall soil berms. The South Tank Farm was decommissioned in the early 1970s; the tanks, piping, and valves were removed, but portions of the berms remained in place. Investigation activities in 2003 confirmed petroleum contamination at two of the former tank locations, and additional investigation activities in 2005 showed petroleum contamination to depths of 60 feet. Removal actions from 2006 to 2008 produced approximately 22,000 cubic yards of contaminated soil, including soil from the berms, that was successfully treated on-site using bioremediation and soil spreading. The site was leveled, and no evidence of the original soil berms remains. The removal actions focused on contaminated soil within the top 15 feet of soil; there is still contamination remaining below 15 feet, and groundwater monitoring results show ethylene dibromide (EDB) is present in the groundwater above clean up levels at this site. The corresponding U.S. Army HQAES site number is: 02341.1075.

Action Information

Action Date	Action	Description	DEC Staff
10/1/2004	Institutional Control Record Established	In the October 2004 Draft Decision Document Fact Sheets, administrative controls (ACs)were estblished in order to minimize risk to human health and the environment. The site is included in the post’s Geographic Information System (GIS), a tool used in the Dig Permit process for notifying contractors, workers, and base personnel of the potential for contamination to exist at this site. The Dig Permit process is used to prevent installation of water production well(s) through the contaminated area, and prevent removal of contaminated material from the site to off-base locations or to environmentally sensitive areas. If future land disturbance activities at the site encounter contamination, the contaminated material encountered will be properly remediated or disposed of in accordance with applicable regulations. The site will be included in 5-year reviews to periodically verify compliance with the ACs.	Emily Youcha
4/12/2005	Site Added to Database	DRO contamination.	Deborah Williams
4/12/2005	GIS Position Updated	Locational data used was TopoZone using the NAD 83 datum.	Deborah Williams
4/12/2005	Update or Other Action	Staff received an Environmental Assessment from Fort Greely indicating that this area will be hydroaxed and the berms may be leveled in order to install fencing and surveillance. Staff encouraged the SMDC to conduct site characterization work as soon as possible.	Emily Youcha
4/12/2005	Site Characterization Workplan Approved	In 2005, soil borings will be drilled in the bermed areas, and areas where soil gas levels were elevated (from 2004 investigations). Eight samples will be analyzed from each tank site and 32 samples analyzed to characterize the berms over the entire site. Additionally, five borings will be installed at two locations where soil gas results were elevated. Samples will be analyzed for GRO, DRO, BTEX. 10-20% of the samples will also be analyzed for RRO and PAHs. SMDC will work with staff to come up with a disposal plan if contaminated soil needs to be removed.	Emily Youcha
5/25/2005	Meeting or Teleconference Held	Staff conducted a site visit of Fort Greely. Summer fieldwork is underway and includes soil gas surveys, drilling and sampling several deep boreholes, and installation of at least two new monitoring wells. Staff also attended a RAB meeting where the general public recieved an update on site work for this and upcoming seasons.	Emily Youcha
7/6/2005	Site Number Identifier Changed	Changed Region from 31 to 33.	Former Staff
7/6/2005	Meeting or Teleconference Held	Staff had a meeting with the Army consultant to discuss options for the site. DRO contamination was found up to about 5000 ppm. The SMDC wants to clear this land and level the large berms. The Army would like to conduct landfarming of the DRO contaminated soil and ADEC concurs with the approach for this site. ADEC expects to receive a corrective action plan for the site shortly.	Emily Youcha
7/11/2005	Update or Other Action	Staff and manager received a landfarming plan for the South Tank Farm (CANOL) site. DRO contaminated soil exists up to 5,000 ppm and will be landfarmed on site this summer. ADEC approved the landfarming operation without a bottom liner. Fertilizer will be added to encourage bioremediation. The soil will be tilled bi-weekly and watered weekly. Personnel will observe the operation frequently to ensure no problems occur. ADEC concurs with the corrective action approach and the plan will be approved contingent upon including the following information and completing the landfarming checklist in the final draft: ADEC must approve the inclusion of any additional contaminated soils from other sites on Fort Greely at the South Tank Farm landfarming facility. ADEC must be notified of any changes to the workplan, including a change in the landfarming facility location.	Emily Youcha
8/9/2005	Update or Other Action	Staff held a meeting with Fort Greely to discuss the feasibility of using DMC Technologies to expedite cleanup of the site. Fort Greely now wants to do a biopile with DMC tech to treat the South Tank Farm site instead of landfarming. Staff expects a workplan from Fort Greely shortly. Fort Greely would also like to treat some compliance soils at the biopile site.	Emily Youcha
8/9/2005	Update or Other Action	Staff received some preliminary sampling results from the RP for this site. DRO and GRO exist in the soil at 60 ft bgs up to 1000 mg/kg. Benzene and toluene were detected above cleanup levels up to 108 ft bgs. Ft Greely may install a monitoring well at this site to ensure the ground water has not been contaminated. the depth to water is over 200 ft bgs.	Emily Youcha
8/12/2005	Update or Other Action	Staff received the new corrective action plan for the South Tank Farm. Fort Greely wants to use DMC Technologies to bioremediate the STF soil and 3 additional stockpiles. Staff comments are: 1) BTEX should be included as a contaminant of concern - not just DRO, 2) if runoff is an issue, the leachate should be controlled, 3) ADEC has concerns that the project is getting started too late in the summer and won't be effective because winter is approaching, and 3) if soils are staged this fall, and left overwinter before treating in the summer of 2006, they should be covered because of the windy conditions in Delta.	Emily Youcha
8/12/2005	Meeting or Teleconference Held	Staff participated in a meeting with Fort Greely to discuss the South Tank Farm. The project will be put on hold until next summer because of concerns as to whether the treatment will be effective in cold weather.	Emily Youcha
9/30/2005	Meeting or Teleconference Held	Staff particpiated in a Restoration Advisory Board Meeting for Fort Greely on September 28.	Emily Youcha
3/6/2006	Interim Removal Action Approved	Staff approved an interim remedial action for bioremediation of petroleum-contaminated berms at the former South Tank Farm and three additional Fort Greely stockpiles: the Landfill stockpile, the Allen Army Airfield Site stockpile, and the Fire Fighting Training Facility stockpile. Although this interim cleanup plan is approved for the shallow contamination, ADEC expects a remedy for the remaining contamination in the near future. Site work involves removing contaminated soil from three berms and creating a stockpile at the center of the former South Tank Farm area. The soil from the three additional stockpiles will be transported on Fort Greely roads to the treatment area at the South Tank Farm. Soil will not be transported to the treatment area on public roads. The excavation, soil transport, and soil sampling tasks will be conducted by Arctic Slope Technical Services staff. Next, representatives from DMC Technologies will construct a bioremediation cell in which nutrients and specific microbes are added to the contaminated soil in one-foot layers to enhance bioremediation. It is estimated that the entire project will take 8-10 weeks, beginning in May 2006.	Emily Youcha
5/15/2006	Update or Other Action	Staff reviewed the 2005 RI for the South Tank Farm. Staff does not consider the characterization effort at this site complete because the subsurface is not fully characterized. Soil gas survey results indicate elevated concentration sof TPH at two probes. The berms are known to be contaminated with diesel range organics. Three deep borings located based on the soil gas data were drilled and sampled for DRO, GRO, RRO, BTEX, PAHs. Soil boring 1 and the satellite borings werenot contaminated in the upper 30 ft above DEC cleanup levels, thus samples were not collected at depths below 30 ft bgs. Soil boring 2, located near a former valve pit, had contamination exceeding Method 2 cleanup levels for DRO, GRO and benzene at a depth of 60 ft bgs. Estimated BTEX concentrations exceed cleanup levels at 78 and 108 bgs. Also, a perched zone of water was identified between 88-91 ft bgs. Soil boring 3 was supposed to be a downgradient monitoring well, but there were problems during the the drilling. A saturated zone was encountered between 90-96 ft bgs. Soil samples contained very low but measurable concentrations of hydrocarbons as deep as 212 ft bgs.	Emily Youcha
6/8/2006	Update or Other Action	Soil was moved to the South Tank Farm from the landfill area (petroleum-contaminates soil stockpile) and the Allen Army Airfield stockpile. Both are PERP sites. Soil at the South Tank Farm was dug up and placed into a large stockpile for bioremediation to begin on June 19. Approximately 3500 yards were stockpiled. Staff expects to attend a site visit on June 26.	Emily Youcha
6/27/2006	Meeting or Teleconference Held	Staff attended a site visit to observe the biopile project. The project had yet to begin. During the meeting it was decided that the biopile will be approximately 3 ft high (instead of 12 ft high) and spread out over a larger area due to SMDC security concerns. DMC will collect footprint samples. Also, additional soil may be placed in this project from other sites because it was thought that the stockpile was only 3500 cu yds, rather than 5000 cu. yds. Additional soil from the Old Post Former Fuel Line and the South Tank Farm valve may be placed in the pile.	Emily Youcha
7/20/2006	Update or Other Action	Staff received a workplan to install three monitoring wells at this site. One will be placed in the perched "aquifer" at 100 ft bgs. Two will be placed downgradient of the contaminated area in the deeper aquifer to very that contamination has not migrated to the deeper aquifer. There is uncertainty in the ground-water flow direction at this site due to the lack of water-level elevations in this area. There may be a downgradient water-supply well.	Emily Youcha
8/1/2006	Update or Other Action	Staff was informed that the contamination at the bermed areas and the valve pit is more extensive than originally thought. When the berms were excavated, confirmation soil samples differed from the screening results. Screening indicated the soil was clean, but the confirmation samples did not. Fort Greely decided to hire DMC to further treat the addtional contaminated soil in the bioremediation project. 7000 cu. yards of soil is being treated, but Fort Greely estimates that there is about 3000 cu. yds left in the 5-15 ft bgs range. In the valve pit there is a mix of DRO/GRO/BTEX, but the berms had more DRO range petroleum. They will not be able to treat this additional 3000 cu. yds this summer.	Emily Youcha
10/4/2006	Update or Other Action	Staff spoke with the SMDC project manager to discuss the South Tank Farm. One of the deep monitoring wells that was installed near the northeast berm was found to be extensively contaminated to the water table at 250 ft below ground surface. A water-supply well for the missile field is located nearby and will be tested for VOCs and DRO/GRO. The water supply well is screened from 280-320 ft bgs and is currently in use for non-potable water.	Emily Youcha
12/5/2006	Meeting or Teleconference Held	Ft. Greely interagency meeting in Anchorage. SMDC remedial project manager provided a summary of this year's remedial efforts. A total of 7,000 cubic yards of petroleum contaminated soil was excavated and treated, although it is estimated that 5,000 cubic yards remain for treatment in the summer of 2007. Groundwater in a perched layer approximately 100 feet below the surface is saturated with DRO, although only dibromoethane exceeded the groundwater cleanup level in a well completed in the aquifer 250 feet below the surface. A water supply well located downgradient in the missile field had a detection of toluene below the practical quantitation limit. It is still unclear if this represents a complete pathway from the South Tank Farm or questionable lab data.	Colin Craven
12/6/2006	Meeting or Teleconference Held	RAB meeting held in Delta Junction. Topics covered are discussed above in the database action for Dec. 5, 2006.	Colin Craven
5/22/2007	Meeting or Teleconference Held	Staff attended Interagency Coordination Meeting in Fairbanks. A summary of the past years and future remedial efforts was provided.	Zachary Richter
5/23/2007	Meeting or Teleconference Held	ADEC Staff attended a RAB meeting held in Delta Junction. The past years work at Fort Greely was summerized and future work projects were presented. Work at the North and South Tank Farms was highlighted.	Zachary Richter
5/23/2007	Update or Other Action	The Alaska Department of Environmental Conservation (ADEC) received the Groundwater Monitoring and Data Analysis Work Plan Fort Greely, Alaska on April 27, 2007. This work plan abides by the 2005 Final Work Plan with modifications to the wells and analytical parameters to be monitored particularly the addition of polycyclic aromatic hydrocarbon analysis at monitoring wells MW-12, MW-13, and MW-14. Additionally, the pump type used in sampling the monitoring wells will be changed by replacing the Grundfos Ready Flow pump with a QED Sample Pro 1.75 inch bladder pump and QED MP10 controller, or equivalent. All other sampling methodology will remain the same as the 2005 Final Plan. The final modification to the 2007 Work Plan is the addition of Volatile Organic Analysis/1,2-dibromoethane monitoring at drinking water wells ECP2 and ISFAC at the missile field. An updated list of wells to be monitored, and the parameter for analysis from each well, for upcoming sampling events has been provided to replace Table 5 of the 2005 Final Work Plan. ADEC has completed its review of this document and has found that the Groundwater Monitoring and Data Analysis Work Plan Fort Greely, Alaska for 2007 adequately meets the requirements set forth in 18AAC75.355, and with the addition of the previously agreed upon amendment, this work plan is approved.	Zachary Richter
6/22/2007	Update or Other Action	The Alaska Department of Conservation (ADEC) received a request for additional soils to be treated at the STF bioremediation project in an email dated June 19, 2006. The original ADEC approval for the STF bioremediation treatment project was issued in a letter on March 6, 2006. The request for the treatment of additional soil from the Fort Greely Petroleum, Oils, and Lubricants (POL) soil stockpile is approved. As specified in the June 19th email the POL soil stockpile contains approximately 43 cubic yards (CY) of soils.	Zachary Richter
7/2/2007	Update or Other Action	The Alaska Department of Environmental Conservation (ADEC) has completed its assessment of the environmental laboratory data and quality assurance requirements as set forth in ADEC Technical Memorandum 06-002 for the Groundwater Monitoring 2006 Analytical Data Report Fort Greely, Alaska, February 2007. The report adequately addresses the requirements set forth by ADEC for both laboratory data packages and Quality Assurance (QA) Summaries, therefore the report is approved.	Zachary Richter
9/19/2007	Meeting or Teleconference Held	ADEC Staff attended a RAB meeting held in Delta Junction. The past years work at Fort Greely was summerized and future work projects were presented.	Deborah Williams
12/28/2007	Update or Other Action	ADEC provided comments on the Draft 2006 RI. According to the RI, the continued characterization of mid- and deep-level soil and groundwater contamination consisted of ground penetrating radar (GPR) survey, vertical advancement of soil boring (six) and the installation of monitoring wells (three downgradient).	Deborah Williams
1/4/2008	Exposure Tracking Model Ranking	Initial ranking with ETM completed.	Deborah Williams
8/12/2008	Site Characterization Workplan Approved	ADEC approved Fort Greely's Compliance and IRP workplans for the 2008 field season. The following sites will be addressed during the 2008 field season: Compliance: MOGAS/DFA Fuel Line Site (BRAC Sites 92, 94, 96, 97, 98, 99, 100 and 134), Building 612 (BRAC 135) Dry Well, Bldg 628 (BRAC 57) Dry Well, Bldg 157 (BRAC 103) Dry Well, Bldg 675 (BRAC 54) Dry Well, Preconstruction Survey at the Proposed Community Activity Center (CAC) and Active POL Farm Valve Pit Site (Bldg 617). IRP: BRAC Site 85N, 85S, and 133, including Soil Boring 41/MW 10 Area, South Tank Farm, Former Laundry Facility at Bldg 675 (BRAC Site 54).	Deborah Williams
11/5/2008	Meeting or Teleconference Held	ADEC staff participated in the Restoration Advisory Board meeting for Fort Greely in Delta Junction. During the meeting, Glen Shonkwiler with the United States Army Space and Missile Defense Command presented the fieldwork that was completed during the 2008 field season at Fort Greely. The 2008 fieldwork included remediating the soil in the biocell at the South Tank Farm (STF); conducting further delineation of the subsurface soils at the STF; installing four groundwater monitoring wells in the Old Post area and downgradient of the STF; completing the investigation at the MOGAS fuel line in the Old Post area; conducting additional survey of the Jarvis Creek Munitions Burial site; and conducting additional investigation of the Building 675 vault. He also presented the work that was planned to be completed during 2009.	Deborah Williams
10/21/2009	Document, Report, or Work plan Review - other	ADEC staff reviewed the document titled Draft 2008 Groundwater Monitoring and Data Analysis Report, Fort Greely, Alaska, dated March 2009. The Fort Greely groundwater monitoring program consists of monitoring wells that were installed during investigation activities on FGA from 1997 to the present. DEC approved a comprehensive groundwater monitoring approach in the 2005 Work Plan. Yearly modifications to the 2005 workplan are incorporated as needed to address environmental program objectives. Monitoring well locations and sampling frequency have been chosen to provide site specific monitoring where necessary, and comprehensive coverage for the old post and main cantonment areas of Fort Greely. Currently, a total of 30 wells are included in the groundwater monitoring program: 11 of these are sampled during the spring and fall on even numbered years, two drinking water wells are sampled quarterly, and 17 monitoring wells are sampled semi–annually. This report summarizes the 2008 groundwater monitoring efforts. A letter detailing staff comments has been provided to the Army.	Tana Robert
2/26/2010	Update or Other Action	ADEC Staff approved the 2008 Groundwater Monitoring and Data Analysis Report, Fort Greely, Alaska, dated November 2009. This report summarizes the 2008 groundwater monitoring efforts at Fort Greely as part of the long term comprehensive groundwater monitoring.	Melody Debenham
1/21/2011	Final Cleanup Report Reviewed	Approved the Removal Action Summary Report documenting removal actions and treatment activities performed at the South Tank Farm site from 2006 to 2008. Approximately 23,500 cubic yards of petroleum contaminated soil was successfully treated on-site using bioremediation and surface spreading. Contamination remains in the soil at depths below 15 feet.	Melody Debenham
6/24/2011	Site Visit	Site visit with consultant to see the ozonation system setup for South Tank Farm and BRAC 94 and to locate new monitoring well locations.	Melody Debenham
8/2/2011	CERCLA RI Plan Approved	Approved locations for 4 new monitoring wells at the Ft. Greely South Tank Farm site. Locations were determined during a TRIAD meeting and site visit, and are placed to bound the east and west sides of the EDB plume, and provide a clean downgradient well along the plume centerline. In addition, one well will be placed between the valve pit and the northeast berm area to determine if there is a groundwater source of EDB at the valve pit.	Melody Debenham
9/4/2013	Document, Report, or Work plan Review - other	Approved the final groundwater sampling work plan for Ft. Greely. As part of the multi-year, post-wide groundwater monitoring program, groundwater samples will be collected from 35 wells.	Melody Debenham
9/18/2013	Document, Report, or Work plan Review - other	Approved the 2013 IRP work plan, which includes installing transducers at the South Tank Farm site to better understand groundwater flow directions and seasonal fluctuations.	Melody Debenham
4/29/2015	Meeting or Teleconference Held	Attended Restoration Advisory Board Meeting. Proposed work in 2015 includes post-wide groundwater monitoring, decommissioning unused monitoring wells, developing a Land Use Control and Long Term Maintenance Plan, and completing propose plans/no further action documents for 51 sites.	Melody Debenham
7/9/2015	CERCLA RI Report Approved	Approved final South Tank Farm Remedial Investigation/Feasibility Study Report. The report presents the results of the 2011 remedial investigation including the installation of 8 soil borings and 4 monitoring wells. Soil results show diesel range organics, benzene, and ethylene dibromide above the cleanup level to depths of 115 feet. Ethylene dibromide was detected in the groundwater above the cleanup level. Several remedial action alternatives were evaluated for soil and groundwater at this site. The preferred alternatives include institutional controls for contaminated soil and long-term monitoring and institutional controls for groundwater.	Melody Debenham
8/28/2015	Document, Report, or Work plan Review - other	Approved the Final 2015 Groundwater Monitoring and Data Analysis Work Plan Addendum for long-term post-wide groundwater monitoring at Fort Greely. Groundwater samples will be collected from 25 monitoring wells and 5 supply wells.	Melody Debenham
8/28/2015	Document, Report, or Work plan Review - other	Approved the Final 2014 Groundwater Monitoring and Data Analysis Report documenting the 2014 post-wide groundwater monitoring activities at Fort Greely. Analytical results from four monitoring wells at the BRAC 94 site were above cleanup levels for diesel range organics, gasoline range organics, and/or benzene. Results from one monitoring well at the South Tank Farm site were above the cleanup level for ethylene dibromide. All other results were either non-detect or below the cleanup level, including all supply well results.	Melody Debenham
4/15/2016	Document, Report, or Work plan Review - other	Approved work plan to decommission 5 monitoring wells at Ft. Greely, including MW-12 and MW-18 at the South Tank Farm site. MW-18 has equipment stuck in the well. If the well cannot be returned to service, it will be decommissioned and a replacement well will be installed.	Melody Debenham
6/2/2016	Document, Report, or Work plan Review - other	Approved addendum to 2015 groundwater monitoring work plan. Monitoring wells at South Tank Farm will be analyzed for DRO, GRO, VOC/BTEX, and EDB.	Melody Debenham
9/20/2016	Document, Report, or Work plan Review - other	Approved final 2015 groundwater monitoring report.	Melody Debenham
4/25/2018	Meeting or Teleconference Held	DEC (Brunner) attended the Restoration Advisory Board (RAB) meeting for Fort Greely in Delta Junction on 29 May 2018. Sites discussed at the RAB included the Asphalt and Tar Disposal Area, Building 163, the Fenced Salvage Yard, and the South Tank Farm.	Melinda Brunner
4/25/2018	Site Visit	DEC performed a site visit, accompanied by G. Shonkwiler of the U.S. Army Space and Missile Defense Command.	Melinda Brunner
12/7/2018	Document, Report, or Work plan Review - other	DEC approved the Final 2016 Groundwater Monitoring and Data Analysis Report, Fort Greely, Alaska (November 2017). The report provides a summary of the 2016 field activities, site background, analytical results and recommendations for future sampling events at Fort Greely, Alaska (FGA). During the 2016 sampling event, 39 wells were sampled at nine site locations. Of those 39 wells sampled, seven wells contained one or more exceedances of the project action limits for diesel range organics (DRO), ethylene dibromide (EDB), benzene and 1,2,4-trimethylbenzene. The FGA monitoring wells will continue to be sampled.	Erica Blake
4/24/2019	Meeting or Teleconference Held	DEC staff attended the Restoration Advisory Board (RAB) meeting held on April 24, 2019. Sites discussed were Base Realignment and Closure (BRAC) Sites 85 North, 85 South, 133 (all three sites former firefighter training areas), 94 (former fuel facility), South Tank Farm, Tar and Asphalt Disposal Area (TAADA) and the Former Scrapyard (~5 acre former fenced salvage area with military munitions debris). The Army presented their status on the Preliminary Assessment (PA) investigation for Per- and Polyfluorinated alkyl Substances on Fort Greely. The next RAB is planned for April 22, 2020.	Erica Blake
4/25/2019	Site Visit	DEC conducted a site visit on Fort Greely. Army Environmental Command staff and Fort Greely Directorate of Public Works (DPW) Environmental staff accompanied DEC staff on a tour of Fort Greely. The main areas visited were; Tar and Asphalt Disposal Area (TAADA), Base Realignment and Closure (BRAC) Sites 85N, 85S, 133, 94 and the former South Tank Farm. During the visit, the integrity of the monitoring wells in the areas visited, were inspected.	Erica Blake
10/30/2019	Document, Report, or Work plan Review - other	DEC approved the Groundwater Sampling and Environmental Support Services Fort Greely, Alaska Final Work Plan (dated October 30, 2019). The purpose of this groundwater monitoring work plan is to guide groundwater sampling activities at selected locations with known or suspected contaminant releases present on Fort Greely, Alaska (FGA). Areas on FGA to be investigated under this work plan are; Robin Road Fuel Spill [Base Realignment and Closure (BRAC) Site 30], Evergreen Road Pipeline Fuel Spill Area (BRAC Site 73), Former Landfills 4 and 5 (BRAC Site 88), BRAC Site 94, BRAC Sites 85N/85S and 133, Tar and Asphalt Disposal Area (TAADA), BRAC Site 92 and 134, Petroleum, oil and lubricant (POL) facility, and South Tank Farm. In addition to collecting groundwater samples and water level measurements, this work plan discusses installation activities for five monitoring wells. The location of these five wells will be provided to DEC in a work plan addendum prior to the spring/summer 2020 work. This work plan describes activities to be conducted fall 2019, and spring/summer 2020.	Erica Blake
11/25/2020	Document, Report, or Work plan Review - other	DEC approved the Groundwater Sampling and Environmental Support Services Fort Greely, Alaska Final Groundwater Monitoring Report 2019, Fort Greely, Alaska (November 24, 2020). The document describes 2019 groundwater sampling activities conducted on nine Fort Greely sites. Twenty-three monitoring and potable water supply wells were sampled. Long-term monitoring is expected to continue at these nine sites on Fort Greely, Alaska.	Erica Blake
12/16/2020	Meeting or Teleconference Held	DEC had a teleconference with the Fort Greely Directorate of Public Works (DPW) environmental staff, the U.S. Corp of Engineers, and contractors assisting with the restoration projects to discuss the status of various site cleanup work (specifically discussing sites associated with the Fort Greely Groundwater Monitoring Program).	Erica Blake
6/8/2021	Document, Report, or Work plan Review - other	ADEC provided review comments for the "Groundwater Sampling and Environmental Support Services, Fort Greely, Alaska, Draft Groundwater Monitoring Report 2020, Fort Greely, Alaska" (dated April 19, 2021) to the U.S. Army. The document discusses results from the 2020 groundwater sampling and includes updated UFP-QAPP pages for the upcoming 2021 field season.	Erica Blake
7/19/2021	Document, Report, or Work plan Review - other	ADEC provided responses to comments for the Groundwater Sampling and Environmental Support Services, Fort Greely, Alaska, Draft Groundwater Monitoring Report 2020, Fort Greely, Alaska (dated April 19, 2021) to the U.S. Army. Sites discussed in the document for a recommended No Further Action, ADEC will review site information for closure separately. A redline version of the document was requested for conducting a comment backcheck.	Erica Blake
7/30/2021	Document, Report, or Work plan Review - other	ADEC provided approval for the "Groundwater Sampling and Environmental Support Services, Fort Greely, Alaska, Final Groundwater Monitoring Report 2020, Fort Greely, Alaska" (dated July 29, 2021) to the U.S. Army. The document includes results from groundwater monitoring activities conducted in 2020, and includes work plan pages describing proposed sampling activities for the upcoming 2021 field season.	Erica Blake
9/14/2021	Document, Report, or Work plan Review - other	ADEC has provided approval for the "Groundwater Sampling and Environmental Support Services Fort Greely, Alaska Final Work Plan 2021, Fort Greely, Alaska" (dated September 13, 2021) to the U.S. Army. The document includes the final Section 7 Waste Handling (approved April 27, 2021), final updated work plan and UFP-QAPP pages (approved July 30, 2021), and the final Appendix E land use control implementation plan (approved September 14, 2021). All the finalized sections have been compiled in this final work plan describing groundwater monitoring activities and a land use control implementation plan for various sites around Fort Greely.	Erica Blake
7/27/2022	Document, Report, or Work plan Review - other	ADEC provided review comments for the Groundwater Sampling and Environmental Support Services Fort Greely, Alaska, Draft Groundwater Monitoring Report 2021, Fort Greely, Alaska (dated June 6, 2022). The document described results from land use control (LUC) inspections, well decommissioning, repair and redevelopment and groundwater sampling activities conducted during the 2021 field season. The document also included updated work plan addendum pages for upcoming 2022 fieldwork.	Erica Blake
9/9/2022	Document, Report, or Work plan Review - other	ADEC provided responses to comments for the Groundwater Sampling and Environmental Support Services Fort Greely, Alaska, Draft Groundwater Monitoring Report 2021, Fort Greely, Alaska (dated June 6, 2022) to the U.S. Army. The document described results from land use control (LUC) inspections, well decommissioning, repair and redevelopment and groundwater sampling activities conducted during the 2021 field season. The document also included updated work plan addendum pages for upcoming 2022 fieldwork. Responses to the review comments were received September 7, 2022. All responses were accepted except for one comment regarding decommissioning a monitoring well at the Tar and Asphalt Disposal Area. A draft-final redline version of the final document was requested for review and comment backcheck prior to ADEC providing any approvals on a final version of the document.	Erica Blake
8/16/2023	Long Term Monitoring Workplan or Report Review	DEC provided review comments for the "Draft Work Plan: Long Term Monitoring and Land Use Control Inspections Fort Greely, Alaska, Dated June 2023" to the U.S. Army. The work plan describes groundwater monitoring and land-use control inspection activities to be conducted at several sites across Fort Greely. The work is planned to occur fall 2023.	Erica Blake
8/24/2023	Long Term Monitoring Workplan or Report Review	DEC provided responses to comments for the Draft Work Plan: Long Term Monitoring and Land Use Control Inspections Fort Greely, Alaska (dated June 2023) to the U.S. Army. The work plan describes proposed activities for long-term monitoring at several Fort Greely sites. All responses to comments received were acceptable, however three comments were accepted with additional comments. A redline version of the work plan along with resumes from the contractor staff planning to complete the fieldwork was requested for review, prior to approval of the document. Work under this work plan is planned to occur fall 2023.	Erica Blake
9/15/2023	Long Term Monitoring Workplan or Report Review	DEC provided review comments for the "Groundwater Sampling and Environmental Support Services Fort Greely Alaska, Draft Groundwater Monitoring Report 2022 Fort Greely, Alaska Dated June 2023" to the U.S. Army. The document describes analytical findings and groundwater monitoring activities conducted in 2022 at Fort Greely, Alaska on multiple sites. Results from land use control/institutional control inspections at several sites are also included in the report.	Erica Blake
11/7/2023	Long Term Monitoring Workplan or Report Review	DEC provided responses to comments for the "Draft Groundwater Monitoring Report 2022 Fort Greely, Alaska Dated June 2023" to the U.S. Army. The report describes long-term monitoring activities conducted in 2022 (groundwater sampling, and land use control and institutional control inspections) at multiple sites around Fort Greely, Alaska. DEC requested additional responses and an updated redline version of the report be provided for additional review prior to any approval.	Erica Blake
1/12/2024	Long Term Monitoring Workplan or Report Review	DEC provided approval for the Groundwater Sampling and Environmental Support Services, Final Groundwater Monitoring Report 2022, Fort Greely, Alaska (dated November 21, 2023) to the U.S. Army. The report describes results from groundwater monitoring activities and land use control and institutional control inspections conducted at multiple sites around Fort Greely, Alaska during the 2022 field season. Long-term monitoring and institutional control inspections are expected to continue.	Erica Blake
1/24/2024	Document, Report, or Work plan Review - other	DEC submitted comments on the Draft South Tank Farm Environmental Summary Report (ESR) on this date. The ESR details the site background, historical summary of environmental investigations and previous remedial actions conducted, and an evaluation of cumulative risk in an effort to evaluate the remaining contamination and data gaps present to determine if the site is eligible for a cleanup complete determination or if further remedial action is required. Given the current data and summary provided, DEC does not agree with the report’s recommendation for the South Tank Farm site to be granted a cleanup complete with institutional controls determination. Dibromoethane is still likely present in groundwater at the site, though most recent sampling shows non-detect, and further sampling is required to show concentrations have attenuated to below groundwater cleanup levels.	Tim Sharp

Action Date

Action

Description

DEC Staff

10/1/2004

Institutional Control Record Established

In the October 2004 Draft Decision Document Fact Sheets, administrative controls (ACs)were estblished in order to minimize risk to human health and the environment. The site is included in the post’s Geographic Information System (GIS), a tool used in the Dig Permit process for notifying contractors, workers, and base personnel of the potential for contamination to exist at this site. The Dig Permit process is used to prevent installation of water production well(s) through the contaminated area, and prevent removal of contaminated material from the site to off-base locations or to environmentally sensitive areas. If future land disturbance activities at the site encounter contamination, the contaminated material encountered will be properly remediated or disposed of in accordance with applicable regulations. The site will be included in 5-year reviews to periodically verify compliance with the ACs.

Emily Youcha

4/12/2005

Site Added to Database

DRO contamination.

Deborah Williams

4/12/2005

GIS Position Updated

Locational data used was TopoZone using the NAD 83 datum.

Deborah Williams

4/12/2005

Update or Other Action

Staff received an Environmental Assessment from Fort Greely indicating that this area will be hydroaxed and the berms may be leveled in order to install fencing and surveillance. Staff encouraged the SMDC to conduct site characterization work as soon as possible.

Emily Youcha

4/12/2005

Site Characterization Workplan Approved

In 2005, soil borings will be drilled in the bermed areas, and areas where soil gas levels were elevated (from 2004 investigations). Eight samples will be analyzed from each tank site and 32 samples analyzed to characterize the berms over the entire site. Additionally, five borings will be installed at two locations where soil gas results were elevated. Samples will be analyzed for GRO, DRO, BTEX. 10-20% of the samples will also be analyzed for RRO and PAHs. SMDC will work with staff to come up with a disposal plan if contaminated soil needs to be removed.

Emily Youcha

5/25/2005

Meeting or Teleconference Held

Staff conducted a site visit of Fort Greely. Summer fieldwork is underway and includes soil gas surveys, drilling and sampling several deep boreholes, and installation of at least two new monitoring wells. Staff also attended a RAB meeting where the general public recieved an update on site work for this and upcoming seasons.

Emily Youcha

7/6/2005

Site Number Identifier Changed

Changed Region from 31 to 33.

Former Staff

7/6/2005

Meeting or Teleconference Held

Staff had a meeting with the Army consultant to discuss options for the site. DRO contamination was found up to about 5000 ppm. The SMDC wants to clear this land and level the large berms. The Army would like to conduct landfarming of the DRO contaminated soil and ADEC concurs with the approach for this site. ADEC expects to receive a corrective action plan for the site shortly.

Emily Youcha

7/11/2005

Update or Other Action

Staff and manager received a landfarming plan for the South Tank Farm (CANOL) site. DRO contaminated soil exists up to 5,000 ppm and will be landfarmed on site this summer. ADEC approved the landfarming operation without a bottom liner. Fertilizer will be added to encourage bioremediation. The soil will be tilled bi-weekly and watered weekly. Personnel will observe the operation frequently to ensure no problems occur. ADEC concurs with the corrective action approach and the plan will be approved contingent upon including the following information and completing the landfarming checklist in the final draft: ADEC must approve the inclusion of any additional contaminated soils from other sites on Fort Greely at the South Tank Farm landfarming facility. ADEC must be notified of any changes to the workplan, including a change in the landfarming facility location.

Emily Youcha

8/9/2005

Update or Other Action

Staff held a meeting with Fort Greely to discuss the feasibility of using DMC Technologies to expedite cleanup of the site. Fort Greely now wants to do a biopile with DMC tech to treat the South Tank Farm site instead of landfarming. Staff expects a workplan from Fort Greely shortly. Fort Greely would also like to treat some compliance soils at the biopile site.

Emily Youcha

8/9/2005

Update or Other Action

Staff received some preliminary sampling results from the RP for this site. DRO and GRO exist in the soil at 60 ft bgs up to 1000 mg/kg. Benzene and toluene were detected above cleanup levels up to 108 ft bgs. Ft Greely may install a monitoring well at this site to ensure the ground water has not been contaminated. the depth to water is over 200 ft bgs.

Emily Youcha

8/12/2005

Update or Other Action

Staff received the new corrective action plan for the South Tank Farm. Fort Greely wants to use DMC Technologies to bioremediate the STF soil and 3 additional stockpiles. Staff comments are: 1) BTEX should be included as a contaminant of concern - not just DRO, 2) if runoff is an issue, the leachate should be controlled, 3) ADEC has concerns that the project is getting started too late in the summer and won't be effective because winter is approaching, and 3) if soils are staged this fall, and left overwinter before treating in the summer of 2006, they should be covered because of the windy conditions in Delta.

Emily Youcha

8/12/2005

Meeting or Teleconference Held

Staff participated in a meeting with Fort Greely to discuss the South Tank Farm. The project will be put on hold until next summer because of concerns as to whether the treatment will be effective in cold weather.

Emily Youcha

9/30/2005

Meeting or Teleconference Held

Staff particpiated in a Restoration Advisory Board Meeting for Fort Greely on September 28.

Emily Youcha

3/6/2006

Interim Removal Action Approved

Staff approved an interim remedial action for bioremediation of petroleum-contaminated berms at the former South Tank Farm and three additional Fort Greely stockpiles: the Landfill stockpile, the Allen Army Airfield Site stockpile, and the Fire Fighting Training Facility stockpile. Although this interim cleanup plan is approved for the shallow contamination, ADEC expects a remedy for the remaining contamination in the near future. Site work involves removing contaminated soil from three berms and creating a stockpile at the center of the former South Tank Farm area. The soil from the three additional stockpiles will be transported on Fort Greely roads to the treatment area at the South Tank Farm. Soil will not be transported to the treatment area on public roads. The excavation, soil transport, and soil sampling tasks will be conducted by Arctic Slope Technical Services staff. Next, representatives from DMC Technologies will construct a bioremediation cell in which nutrients and specific microbes are added to the contaminated soil in one-foot layers to enhance bioremediation. It is estimated that the entire project will take 8-10 weeks, beginning in May 2006.

Emily Youcha

5/15/2006

Update or Other Action

Staff reviewed the 2005 RI for the South Tank Farm. Staff does not consider the characterization effort at this site complete because the subsurface is not fully characterized. Soil gas survey results indicate elevated concentration sof TPH at two probes. The berms are known to be contaminated with diesel range organics. Three deep borings located based on the soil gas data were drilled and sampled for DRO, GRO, RRO, BTEX, PAHs. Soil boring 1 and the satellite borings werenot contaminated in the upper 30 ft above DEC cleanup levels, thus samples were not collected at depths below 30 ft bgs. Soil boring 2, located near a former valve pit, had contamination exceeding Method 2 cleanup levels for DRO, GRO and benzene at a depth of 60 ft bgs. Estimated BTEX concentrations exceed cleanup levels at 78 and 108 bgs. Also, a perched zone of water was identified between 88-91 ft bgs. Soil boring 3 was supposed to be a downgradient monitoring well, but there were problems during the the drilling. A saturated zone was encountered between 90-96 ft bgs. Soil samples contained very low but measurable concentrations of hydrocarbons as deep as 212 ft bgs.

Emily Youcha

6/8/2006

Update or Other Action

Soil was moved to the South Tank Farm from the landfill area (petroleum-contaminates soil stockpile) and the Allen Army Airfield stockpile. Both are PERP sites. Soil at the South Tank Farm was dug up and placed into a large stockpile for bioremediation to begin on June 19. Approximately 3500 yards were stockpiled. Staff expects to attend a site visit on June 26.

Emily Youcha

6/27/2006

Meeting or Teleconference Held

Staff attended a site visit to observe the biopile project. The project had yet to begin. During the meeting it was decided that the biopile will be approximately 3 ft high (instead of 12 ft high) and spread out over a larger area due to SMDC security concerns. DMC will collect footprint samples. Also, additional soil may be placed in this project from other sites because it was thought that the stockpile was only 3500 cu yds, rather than 5000 cu. yds. Additional soil from the Old Post Former Fuel Line and the South Tank Farm valve may be placed in the pile.

Emily Youcha

7/20/2006

Update or Other Action

Staff received a workplan to install three monitoring wells at this site. One will be placed in the perched "aquifer" at 100 ft bgs. Two will be placed downgradient of the contaminated area in the deeper aquifer to very that contamination has not migrated to the deeper aquifer. There is uncertainty in the ground-water flow direction at this site due to the lack of water-level elevations in this area. There may be a downgradient water-supply well.

Emily Youcha

8/1/2006

Update or Other Action

Staff was informed that the contamination at the bermed areas and the valve pit is more extensive than originally thought. When the berms were excavated, confirmation soil samples differed from the screening results. Screening indicated the soil was clean, but the confirmation samples did not. Fort Greely decided to hire DMC to further treat the addtional contaminated soil in the bioremediation project. 7000 cu. yards of soil is being treated, but Fort Greely estimates that there is about 3000 cu. yds left in the 5-15 ft bgs range. In the valve pit there is a mix of DRO/GRO/BTEX, but the berms had more DRO range petroleum. They will not be able to treat this additional 3000 cu. yds this summer.

Emily Youcha

10/4/2006

Update or Other Action

Staff spoke with the SMDC project manager to discuss the South Tank Farm. One of the deep monitoring wells that was installed near the northeast berm was found to be extensively contaminated to the water table at 250 ft below ground surface. A water-supply well for the missile field is located nearby and will be tested for VOCs and DRO/GRO. The water supply well is screened from 280-320 ft bgs and is currently in use for non-potable water.

Emily Youcha

12/5/2006

Meeting or Teleconference Held

Ft. Greely interagency meeting in Anchorage. SMDC remedial project manager provided a summary of this year's remedial efforts. A total of 7,000 cubic yards of petroleum contaminated soil was excavated and treated, although it is estimated that 5,000 cubic yards remain for treatment in the summer of 2007. Groundwater in a perched layer approximately 100 feet below the surface is saturated with DRO, although only dibromoethane exceeded the groundwater cleanup level in a well completed in the aquifer 250 feet below the surface. A water supply well located downgradient in the missile field had a detection of toluene below the practical quantitation limit. It is still unclear if this represents a complete pathway from the South Tank Farm or questionable lab data.

Colin Craven

12/6/2006

Meeting or Teleconference Held

RAB meeting held in Delta Junction. Topics covered are discussed above in the database action for Dec. 5, 2006.

Colin Craven

5/22/2007

Meeting or Teleconference Held

Staff attended Interagency Coordination Meeting in Fairbanks. A summary of the past years and future remedial efforts was provided.

Zachary Richter

5/23/2007

Meeting or Teleconference Held

ADEC Staff attended a RAB meeting held in Delta Junction. The past years work at Fort Greely was summerized and future work projects were presented. Work at the North and South Tank Farms was highlighted.

Zachary Richter

5/23/2007

Update or Other Action

The Alaska Department of Environmental Conservation (ADEC) received the Groundwater Monitoring and Data Analysis Work Plan Fort Greely, Alaska on April 27, 2007. This work plan abides by the 2005 Final Work Plan with modifications to the wells and analytical parameters to be monitored particularly the addition of polycyclic aromatic hydrocarbon analysis at monitoring wells MW-12, MW-13, and MW-14. Additionally, the pump type used in sampling the monitoring wells will be changed by replacing the Grundfos Ready Flow pump with a QED Sample Pro 1.75 inch bladder pump and QED MP10 controller, or equivalent. All other sampling methodology will remain the same as the 2005 Final Plan. The final modification to the 2007 Work Plan is the addition of Volatile Organic Analysis/1,2-dibromoethane monitoring at drinking water wells ECP2 and ISFAC at the missile field. An updated list of wells to be monitored, and the parameter for analysis from each well, for upcoming sampling events has been provided to replace Table 5 of the 2005 Final Work Plan. ADEC has completed its review of this document and has found that the Groundwater Monitoring and Data Analysis Work Plan Fort Greely, Alaska for 2007 adequately meets the requirements set forth in 18AAC75.355, and with the addition of the previously agreed upon amendment, this work plan is approved.

Zachary Richter

6/22/2007

Update or Other Action

The Alaska Department of Conservation (ADEC) received a request for additional soils to be treated at the STF bioremediation project in an email dated June 19, 2006. The original ADEC approval for the STF bioremediation treatment project was issued in a letter on March 6, 2006. The request for the treatment of additional soil from the Fort Greely Petroleum, Oils, and Lubricants (POL) soil stockpile is approved. As specified in the June 19th email the POL soil stockpile contains approximately 43 cubic yards (CY) of soils.

Zachary Richter

7/2/2007

Update or Other Action

The Alaska Department of Environmental Conservation (ADEC) has completed its assessment of the environmental laboratory data and quality assurance requirements as set forth in ADEC Technical Memorandum 06-002 for the Groundwater Monitoring 2006 Analytical Data Report Fort Greely, Alaska, February 2007. The report adequately addresses the requirements set forth by ADEC for both laboratory data packages and Quality Assurance (QA) Summaries, therefore the report is approved.

Zachary Richter

9/19/2007

Meeting or Teleconference Held

ADEC Staff attended a RAB meeting held in Delta Junction. The past years work at Fort Greely was summerized and future work projects were presented.

Deborah Williams

12/28/2007

Update or Other Action

ADEC provided comments on the Draft 2006 RI. According to the RI, the continued characterization of mid- and deep-level soil and groundwater contamination consisted of ground penetrating radar (GPR) survey, vertical advancement of soil boring (six) and the installation of monitoring wells (three downgradient).

Deborah Williams

1/4/2008

Exposure Tracking Model Ranking

Initial ranking with ETM completed.

Deborah Williams

8/12/2008

Site Characterization Workplan Approved

ADEC approved Fort Greely's Compliance and IRP workplans for the 2008 field season. The following sites will be addressed during the 2008 field season: Compliance: MOGAS/DFA Fuel Line Site (BRAC Sites 92, 94, 96, 97, 98, 99, 100 and 134), Building 612 (BRAC 135) Dry Well, Bldg 628 (BRAC 57) Dry Well, Bldg 157 (BRAC 103) Dry Well, Bldg 675 (BRAC 54) Dry Well, Preconstruction Survey at the Proposed Community Activity Center (CAC) and Active POL Farm Valve Pit Site (Bldg 617). IRP: BRAC Site 85N, 85S, and 133, including Soil Boring 41/MW 10 Area, South Tank Farm, Former Laundry Facility at Bldg 675 (BRAC Site 54).

Deborah Williams

11/5/2008

Meeting or Teleconference Held

ADEC staff participated in the Restoration Advisory Board meeting for Fort Greely in Delta Junction. During the meeting, Glen Shonkwiler with the United States Army Space and Missile Defense Command presented the fieldwork that was completed during the 2008 field season at Fort Greely. The 2008 fieldwork included remediating the soil in the biocell at the South Tank Farm (STF); conducting further delineation of the subsurface soils at the STF; installing four groundwater monitoring wells in the Old Post area and downgradient of the STF; completing the investigation at the MOGAS fuel line in the Old Post area; conducting additional survey of the Jarvis Creek Munitions Burial site; and conducting additional investigation of the Building 675 vault. He also presented the work that was planned to be completed during 2009.

Deborah Williams

10/21/2009

Document, Report, or Work plan Review - other

ADEC staff reviewed the document titled Draft 2008 Groundwater Monitoring and Data Analysis Report, Fort Greely, Alaska, dated March 2009. The Fort Greely groundwater monitoring program consists of monitoring wells that were installed during investigation activities on FGA from 1997 to the present. DEC approved a comprehensive groundwater monitoring approach in the 2005 Work Plan. Yearly modifications to the 2005 workplan are incorporated as needed to address environmental program objectives. Monitoring well locations and sampling frequency have been chosen to provide site specific monitoring where necessary, and comprehensive coverage for the old post and main cantonment areas of Fort Greely. Currently, a total of 30 wells are included in the groundwater monitoring program: 11 of these are sampled during the spring and fall on even numbered years, two drinking water wells are sampled quarterly, and 17 monitoring wells are sampled semi–annually. This report summarizes the 2008 groundwater monitoring efforts. A letter detailing staff comments has been provided to the Army.

Tana Robert

2/26/2010

Update or Other Action

ADEC Staff approved the 2008 Groundwater Monitoring and Data Analysis Report, Fort Greely, Alaska, dated November 2009. This report summarizes the 2008 groundwater monitoring efforts at Fort Greely as part of the long term comprehensive groundwater monitoring.

Melody Debenham

1/21/2011

Final Cleanup Report Reviewed

Approved the Removal Action Summary Report documenting removal actions and treatment activities performed at the South Tank Farm site from 2006 to 2008. Approximately 23,500 cubic yards of petroleum contaminated soil was successfully treated on-site using bioremediation and surface spreading. Contamination remains in the soil at depths below 15 feet.

Melody Debenham

6/24/2011

Site Visit

Site visit with consultant to see the ozonation system setup for South Tank Farm and BRAC 94 and to locate new monitoring well locations.

Melody Debenham

8/2/2011

CERCLA RI Plan Approved

Approved locations for 4 new monitoring wells at the Ft. Greely South Tank Farm site. Locations were determined during a TRIAD meeting and site visit, and are placed to bound the east and west sides of the EDB plume, and provide a clean downgradient well along the plume centerline. In addition, one well will be placed between the valve pit and the northeast berm area to determine if there is a groundwater source of EDB at the valve pit.

Melody Debenham

9/4/2013

Document, Report, or Work plan Review - other

Approved the final groundwater sampling work plan for Ft. Greely. As part of the multi-year, post-wide groundwater monitoring program, groundwater samples will be collected from 35 wells.

Melody Debenham

9/18/2013

Document, Report, or Work plan Review - other

Approved the 2013 IRP work plan, which includes installing transducers at the South Tank Farm site to better understand groundwater flow directions and seasonal fluctuations.

Melody Debenham

4/29/2015

Meeting or Teleconference Held

Attended Restoration Advisory Board Meeting. Proposed work in 2015 includes post-wide groundwater monitoring, decommissioning unused monitoring wells, developing a Land Use Control and Long Term Maintenance Plan, and completing propose plans/no further action documents for 51 sites.

Melody Debenham

7/9/2015

CERCLA RI Report Approved

Approved final South Tank Farm Remedial Investigation/Feasibility Study Report. The report presents the results of the 2011 remedial investigation including the installation of 8 soil borings and 4 monitoring wells. Soil results show diesel range organics, benzene, and ethylene dibromide above the cleanup level to depths of 115 feet. Ethylene dibromide was detected in the groundwater above the cleanup level. Several remedial action alternatives were evaluated for soil and groundwater at this site. The preferred alternatives include institutional controls for contaminated soil and long-term monitoring and institutional controls for groundwater.

Melody Debenham

8/28/2015

Document, Report, or Work plan Review - other

Approved the Final 2015 Groundwater Monitoring and Data Analysis Work Plan Addendum for long-term post-wide groundwater monitoring at Fort Greely. Groundwater samples will be collected from 25 monitoring wells and 5 supply wells.

Melody Debenham

8/28/2015

Document, Report, or Work plan Review - other

Approved the Final 2014 Groundwater Monitoring and Data Analysis Report documenting the 2014 post-wide groundwater monitoring activities at Fort Greely. Analytical results from four monitoring wells at the BRAC 94 site were above cleanup levels for diesel range organics, gasoline range organics, and/or benzene. Results from one monitoring well at the South Tank Farm site were above the cleanup level for ethylene dibromide. All other results were either non-detect or below the cleanup level, including all supply well results.

Melody Debenham

4/15/2016

Document, Report, or Work plan Review - other

Approved work plan to decommission 5 monitoring wells at Ft. Greely, including MW-12 and MW-18 at the South Tank Farm site. MW-18 has equipment stuck in the well. If the well cannot be returned to service, it will be decommissioned and a replacement well will be installed.

Melody Debenham

6/2/2016

Document, Report, or Work plan Review - other

Approved addendum to 2015 groundwater monitoring work plan. Monitoring wells at South Tank Farm will be analyzed for DRO, GRO, VOC/BTEX, and EDB.

Melody Debenham

9/20/2016

Document, Report, or Work plan Review - other

Approved final 2015 groundwater monitoring report.

Melody Debenham

4/25/2018

Meeting or Teleconference Held

DEC (Brunner) attended the Restoration Advisory Board (RAB) meeting for Fort Greely in Delta Junction on 29 May 2018. Sites discussed at the RAB included the Asphalt and Tar Disposal Area, Building 163, the Fenced Salvage Yard, and the South Tank Farm.

Melinda Brunner

4/25/2018

Site Visit

DEC performed a site visit, accompanied by G. Shonkwiler of the U.S. Army Space and Missile Defense Command.

Melinda Brunner

12/7/2018

Document, Report, or Work plan Review - other

DEC approved the Final 2016 Groundwater Monitoring and Data Analysis Report, Fort Greely, Alaska (November 2017). The report provides a summary of the 2016 field activities, site background, analytical results and recommendations for future sampling events at Fort Greely, Alaska (FGA). During the 2016 sampling event, 39 wells were sampled at nine site locations. Of those 39 wells sampled, seven wells contained one or more exceedances of the project action limits for diesel range organics (DRO), ethylene dibromide (EDB), benzene and 1,2,4-trimethylbenzene. The FGA monitoring wells will continue to be sampled.

Erica Blake

4/24/2019

Meeting or Teleconference Held

DEC staff attended the Restoration Advisory Board (RAB) meeting held on April 24, 2019. Sites discussed were Base Realignment and Closure (BRAC) Sites 85 North, 85 South, 133 (all three sites former firefighter training areas), 94 (former fuel facility), South Tank Farm, Tar and Asphalt Disposal Area (TAADA) and the Former Scrapyard (~5 acre former fenced salvage area with military munitions debris). The Army presented their status on the Preliminary Assessment (PA) investigation for Per- and Polyfluorinated alkyl Substances on Fort Greely. The next RAB is planned for April 22, 2020.

Erica Blake

4/25/2019

Site Visit

DEC conducted a site visit on Fort Greely. Army Environmental Command staff and Fort Greely Directorate of Public Works (DPW) Environmental staff accompanied DEC staff on a tour of Fort Greely. The main areas visited were; Tar and Asphalt Disposal Area (TAADA), Base Realignment and Closure (BRAC) Sites 85N, 85S, 133, 94 and the former South Tank Farm. During the visit, the integrity of the monitoring wells in the areas visited, were inspected.

Erica Blake

10/30/2019

Document, Report, or Work plan Review - other

DEC approved the Groundwater Sampling and Environmental Support Services Fort Greely, Alaska Final Work Plan (dated October 30, 2019). The purpose of this groundwater monitoring work plan is to guide groundwater sampling activities at selected locations with known or suspected contaminant releases present on Fort Greely, Alaska (FGA). Areas on FGA to be investigated under this work plan are; Robin Road Fuel Spill [Base Realignment and Closure (BRAC) Site 30], Evergreen Road Pipeline Fuel Spill Area (BRAC Site 73), Former Landfills 4 and 5 (BRAC Site 88), BRAC Site 94, BRAC Sites 85N/85S and 133, Tar and Asphalt Disposal Area (TAADA), BRAC Site 92 and 134, Petroleum, oil and lubricant (POL) facility, and South Tank Farm. In addition to collecting groundwater samples and water level measurements, this work plan discusses installation activities for five monitoring wells. The location of these five wells will be provided to DEC in a work plan addendum prior to the spring/summer 2020 work. This work plan describes activities to be conducted fall 2019, and spring/summer 2020.

Erica Blake

11/25/2020

Document, Report, or Work plan Review - other

DEC approved the Groundwater Sampling and Environmental Support Services Fort Greely, Alaska Final Groundwater Monitoring Report 2019, Fort Greely, Alaska (November 24, 2020). The document describes 2019 groundwater sampling activities conducted on nine Fort Greely sites. Twenty-three monitoring and potable water supply wells were sampled. Long-term monitoring is expected to continue at these nine sites on Fort Greely, Alaska.

Erica Blake

12/16/2020

Meeting or Teleconference Held

DEC had a teleconference with the Fort Greely Directorate of Public Works (DPW) environmental staff, the U.S. Corp of Engineers, and contractors assisting with the restoration projects to discuss the status of various site cleanup work (specifically discussing sites associated with the Fort Greely Groundwater Monitoring Program).

Erica Blake

6/8/2021

Document, Report, or Work plan Review - other

ADEC provided review comments for the "Groundwater Sampling and Environmental Support Services, Fort Greely, Alaska, Draft Groundwater Monitoring Report 2020, Fort Greely, Alaska" (dated April 19, 2021) to the U.S. Army. The document discusses results from the 2020 groundwater sampling and includes updated UFP-QAPP pages for the upcoming 2021 field season.

Erica Blake

7/19/2021

Document, Report, or Work plan Review - other

ADEC provided responses to comments for the Groundwater Sampling and Environmental Support Services, Fort Greely, Alaska, Draft Groundwater Monitoring Report 2020, Fort Greely, Alaska (dated April 19, 2021) to the U.S. Army. Sites discussed in the document for a recommended No Further Action, ADEC will review site information for closure separately. A redline version of the document was requested for conducting a comment backcheck.

Erica Blake

7/30/2021

Document, Report, or Work plan Review - other

ADEC provided approval for the "Groundwater Sampling and Environmental Support Services, Fort Greely, Alaska, Final Groundwater Monitoring Report 2020, Fort Greely, Alaska" (dated July 29, 2021) to the U.S. Army. The document includes results from groundwater monitoring activities conducted in 2020, and includes work plan pages describing proposed sampling activities for the upcoming 2021 field season.

Erica Blake

9/14/2021

Document, Report, or Work plan Review - other

ADEC has provided approval for the "Groundwater Sampling and Environmental Support Services Fort Greely, Alaska Final Work Plan 2021, Fort Greely, Alaska" (dated September 13, 2021) to the U.S. Army. The document includes the final Section 7 Waste Handling (approved April 27, 2021), final updated work plan and UFP-QAPP pages (approved July 30, 2021), and the final Appendix E land use control implementation plan (approved September 14, 2021). All the finalized sections have been compiled in this final work plan describing groundwater monitoring activities and a land use control implementation plan for various sites around Fort Greely.

Erica Blake

7/27/2022

Document, Report, or Work plan Review - other

ADEC provided review comments for the Groundwater Sampling and Environmental Support Services Fort Greely, Alaska, Draft Groundwater Monitoring Report 2021, Fort Greely, Alaska (dated June 6, 2022). The document described results from land use control (LUC) inspections, well decommissioning, repair and redevelopment and groundwater sampling activities conducted during the 2021 field season. The document also included updated work plan addendum pages for upcoming 2022 fieldwork.

Erica Blake

9/9/2022

Document, Report, or Work plan Review - other

ADEC provided responses to comments for the Groundwater Sampling and Environmental Support Services Fort Greely, Alaska, Draft Groundwater Monitoring Report 2021, Fort Greely, Alaska (dated June 6, 2022) to the U.S. Army. The document described results from land use control (LUC) inspections, well decommissioning, repair and redevelopment and groundwater sampling activities conducted during the 2021 field season. The document also included updated work plan addendum pages for upcoming 2022 fieldwork. Responses to the review comments were received September 7, 2022. All responses were accepted except for one comment regarding decommissioning a monitoring well at the Tar and Asphalt Disposal Area. A draft-final redline version of the final document was requested for review and comment backcheck prior to ADEC providing any approvals on a final version of the document.

Erica Blake

8/16/2023

Long Term Monitoring Workplan or Report Review

DEC provided review comments for the "Draft Work Plan: Long Term Monitoring and Land Use Control Inspections Fort Greely, Alaska, Dated June 2023" to the U.S. Army. The work plan describes groundwater monitoring and land-use control inspection activities to be conducted at several sites across Fort Greely. The work is planned to occur fall 2023.

Erica Blake

8/24/2023

Long Term Monitoring Workplan or Report Review

DEC provided responses to comments for the Draft Work Plan: Long Term Monitoring and Land Use Control Inspections Fort Greely, Alaska (dated June 2023) to the U.S. Army. The work plan describes proposed activities for long-term monitoring at several Fort Greely sites. All responses to comments received were acceptable, however three comments were accepted with additional comments. A redline version of the work plan along with resumes from the contractor staff planning to complete the fieldwork was requested for review, prior to approval of the document. Work under this work plan is planned to occur fall 2023.

Erica Blake

9/15/2023

Long Term Monitoring Workplan or Report Review

DEC provided review comments for the "Groundwater Sampling and Environmental Support Services Fort Greely Alaska, Draft Groundwater Monitoring Report 2022 Fort Greely, Alaska Dated June 2023" to the U.S. Army. The document describes analytical findings and groundwater monitoring activities conducted in 2022 at Fort Greely, Alaska on multiple sites. Results from land use control/institutional control inspections at several sites are also included in the report.

Erica Blake

11/7/2023

Long Term Monitoring Workplan or Report Review

DEC provided responses to comments for the "Draft Groundwater Monitoring Report 2022 Fort Greely, Alaska Dated June 2023" to the U.S. Army. The report describes long-term monitoring activities conducted in 2022 (groundwater sampling, and land use control and institutional control inspections) at multiple sites around Fort Greely, Alaska. DEC requested additional responses and an updated redline version of the report be provided for additional review prior to any approval.

Erica Blake

1/12/2024

Long Term Monitoring Workplan or Report Review

DEC provided approval for the Groundwater Sampling and Environmental Support Services, Final Groundwater Monitoring Report 2022, Fort Greely, Alaska (dated November 21, 2023) to the U.S. Army. The report describes results from groundwater monitoring activities and land use control and institutional control inspections conducted at multiple sites around Fort Greely, Alaska during the 2022 field season. Long-term monitoring and institutional control inspections are expected to continue.

Erica Blake

1/24/2024

Document, Report, or Work plan Review - other

DEC submitted comments on the Draft South Tank Farm Environmental Summary Report (ESR) on this date. The ESR details the site background, historical summary of environmental investigations and previous remedial actions conducted, and an evaluation of cumulative risk in an effort to evaluate the remaining contamination and data gaps present to determine if the site is eligible for a cleanup complete determination or if further remedial action is required. Given the current data and summary provided, DEC does not agree with the report’s recommendation for the South Tank Farm site to be granted a cleanup complete with institutional controls determination. Dibromoethane is still likely present in groundwater at the site, though most recent sampling shows non-detect, and further sampling is required to show concentrations have attenuated to below groundwater cleanup levels.

Tim Sharp

Contaminant Information

Name	Level Description	Media	Comments
DRO	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil
Benzene	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil

Name

Level Description

Media

Comments

DRO

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

Soil

Benzene

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

Soil

Control Type

Type	Details
Land Use Plan / Maps / Base Master Plan	In the October 2004 Draft Decision Document Fact Sheets, administrative controls (ACs)were estblished in order to minimize risk to human health and the environment. The site is included in the post’s Geographic Information System (GIS), a tool used in the Dig Permit process for notifying contractors, workers, and base personnel of the potential for contamination to exist at this site.

Type

Details

Land Use Plan / Maps / Base Master Plan

Requirements

Description	Details
Groundwater Use Restrictions	Prohibit installation of water supply wells. 5 year reviews
Excavation / Soil Movement Restrictions	Prevent removal of contaminated material from the site to off-base locations or to environmentally sensitive areas. 5 year reviews
When Contaminated Soil is Accessible, Remediation Should Occur	If future land disturbance activities at the site encounter contamination, the contaminated material encountered will be properly remediated or disposed of in accordance with applicable regulations. 5 year reviews

Description

Details

Groundwater Use Restrictions

Prohibit installation of water supply wells. 5 year reviews

Excavation / Soil Movement Restrictions

Prevent removal of contaminated material from the site to off-base locations or to environmentally sensitive areas. 5 year reviews

When Contaminated Soil is Accessible, Remediation Should Occur

If future land disturbance activities at the site encounter contamination, the contaminated material encountered will be properly remediated or disposed of in accordance with applicable regulations. 5 year reviews

There are no documents for this site report.

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: Fort Greely South Tank Farm

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Missing Location Data

State of Alaska Department of Environmental Conservation