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Site Report: Fort Greely Bldg 160 BRAC 100

Site Name: Fort Greely Bldg 160 BRAC 100
Address: 6th Avenue, Fort Greely, AK 99731
File Number: 141.38.067
Hazard ID: 3838
Status: Active
Staff: Tim Sharp, 9074512131 tim.sharp@alaska.gov
Latitude: 63.986685
Longitude: -145.719110
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.

Problems/Comments

The Building 160 site is also known as Base Realignment and Closure (BRAC) 100. The building was constructed in 1940 used for warm storage for firefighting equipment and had a 3,000-gallon underground storage tank (UST). The building has been demolished, and the site is currently a gravel pad with the nearest occupied building greater than 100 feet away. Petroleum contaminated soil was encountered during removal of the UST in 1995. Site investigation activities occurred in 1996, 1998, 2008, and 2010. Soil borings drilled at the site identified at around 20 feet below ground surface, diesel range organics (DRO) above the Table B2 Method Two ingestion cleanup levels. Results at around 30-35 feet below ground surface were below cleanup levels, demonstrating the contamination was around 20 feet below ground surface. In 2010, approximately 300 cubic yards of petroleum contaminated soil were removed to a depth of 15 feet. Confirmation samples were collected, and one sample had a DRO concentration of 453 milligrams per kilogram, which is above the Table B2 Method Two migration to groundwater cleanup level. This confirmation sample was collected around 15 feet below ground surface. The excavation was backfilled in 2010, and the remaining contamination at the former Building 160 site is de minimis. The former Building 160 site is located near BRAC Site 94. Groundwater contamination in this area of Fort Greely is attributed to BRAC Site 94. For additional information on the groundwater contamination, please reference DEC file number: 141.38.082 (Hazard ID: 26559).

Action Information

Action Date Action Description DEC Staff
3/13/2001 Site Added to Database Diesel fuel. Bruce Wanstall
11/7/2002 Update or Other Action Proposed Plan from SMDC pending. Greg Light
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
12/14/2004 Update or Other Action UST was femoved in 1995 and was found to have leaked. A site assessment was not conducted at the time of removal. Emily Youcha
12/14/2004 Update or Other Action DRO concentrations up to 18,000 mg/kg were found in 1996 borings to at least 25 feet bgs. Emily Youcha
12/14/2004 Update or Other Action Staff received a "memorandum for record" factsheet on the site and it will be categorized into the Compliance program. Administrative controls have been established and alternative cleanup levels may be established. Emily Youcha
12/20/2004 Update or Other Action ADEC reviewed a report titled "Comprehensive evaluation of groundwater monitoring program Fort Greely, Alaska". The report discussed the existing monitoring network at Fort Greely and the parameters evaluated in ground-water sampling events. ADEC recommended additional investigation into infiltration and vertical hydraulic gradients. ADEC also recommended additional monitoring wells in the Old Post area and more ground-water monitoring at certain specific sites. 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
8/26/2005 GIS Position Updated Coordinate obtained from GIS Arc Reader aerial photograph. 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
11/28/2006 Update or Other Action At project manager request, assigning new file number to site. Number was 141.38.036, now 141.38.067. Wendy Uzzell
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
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
3/26/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed. 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
11/13/2009 Document, Report, or Work plan Review - other Staff reviewed and provided comments on the document titled DRAFT 2008 COMPLIANCE CLEANUP SITES ANNUAL REPORT: MOGAS/DFA Fuel Line at Old Post (BRAC Sites 134, 96, 97, 98, 99, and 100); Building 163 and Former UST Tank Farm (BRAC Site 94); Building 100 Drum Storage (BRAC Site 92); Evergreen Road POL Yard (BRAC Site 102); Dry Wells Located at Buildings 628, 612, and 675 (BRAC Sites 57, 135, and 54); Preconstruction Environmental Survey for Proposed CAC Site FORT GREELY, ALASKA (April 2008) prepared for the US Army Space and Missile Defense Command by ASTS Incorporated. Tana Robert
7/23/2010 Site Characterization Workplan Approved Approved 2010 IRP Work Plan. Petroleum impacted soil will be removed at this site. Melody Debenham
3/20/2013 Document, Report, or Work plan Review - other Approved the final soil stockpile characterization report documenting sampling of petroleum impacted soils contained in long-term stockpiles and supersacks staged near the landfarm area. The stockpiled soil was generated during remedial actions conducted from 2010 to 2012 at multiple sites at Fort Greely, including BRAC 100. Based on the information presented in the report, and in consultation with the solid waste program, the stockpiled soil is suitable for use as daily cover at the Fort Greely landfill. 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
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
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
10/9/2015 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 74813 Former 3,000-gallon UST (#413). Melody Debenham
7/14/2023 Document, Report, or Work plan Review - other DEC provided comments for the "Draft Environmental Summary Report, FGLY-059, Building 160, Fort Greely, AK" (dated May 4, 2023) to the U.S. Army. The document summarizes the environmental site cleanup and remedial actions conducted at Building 160. Release investigations at the site have been conducted between 1996 and 2010. Tim Sharp
9/27/2023 Document, Report, or Work plan Review - other DEC provided responses to comments for the "Draft Environmental Summary Report, FGLY-059, Building 160, Fort Greely, AK Dated May 4, 2023," to the U.S. Army. Responses to comments provided on July 14, 2023 were received on August 15, 2023. During review of the responses to comments and additional site documents in the file, additional comments were found and drafted requesting revisions to the Environmental Summary Report to make the document more accurate and complete. Erica Blake
1/17/2024 Document, Report, or Work plan Review - other DEC has reviewed the Environmental Summary Report (ESR) for the Motor Gasoline/Diesel Fuel Arctic (MOGAS/DFA) Fuel Line Site, which details the historical records, environmental investigations, and remedial actions for the MOGAS/DFA Fuel Line site 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. Clarification regarding which sites included in the ESR were being recommended for further action/cleanup complete was requested. Tim Sharp
1/25/2024 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 74813 Former 3,000-gallon UST (#413). Tim Sharp

Contaminant Information

Name Level Description Media Comments
DRO > 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.

Requirements

Description Details
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

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