Division of Spill Prevention and Response

Breadcrumbs

Site Report: Fort Greely Robin Road Spill BRAC 30


Site Name: Fort Greely Robin Road Spill BRAC 30
Address: 1/4 Mile West of Robin Rd, Fort Greely Army Post, Fort Greely, AK 99731
File Number: 141.38.074
Hazard ID: 119
Status: Active
Staff: Joy Whitsel, 9074512156 joy.whitsel@alaska.gov
Latitude: 63.973043
Longitude: -145.737144
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 Robin Road Fuel Spill site is also known as Base Realignment Closure (BRAC) 30. In December 1982, between 52,000 and 133,000 gallons of diesel fuel leaked from a distribution pipeline. Some cleanup was completed at the time of the spill. Borings drilled within a week of the spill indicated fuel had leached to at least 50 ft bgs. In 1983, impacted soil was excavated to a depth of 4 feet over an area of 7500 square feet. The disposal method and location of the excavated soil is unknown. Two monitoring wells were installed at the spill site and 5 downgradient wells were installed across the Fort greely cantonment. In a 1997 investigation, it was found that 6600 sq. feet of impacted surface soil existed as well as a larger zone at 40-50 ft bgs. It was also found that DRO contaminated soil reached 70 ft gbs. Approximately 90 cu. yds of soil was removed from the upper 15 ft due to exceedences of xylene above the health-based screening critera. The soil was thermally processed using a mobile thermal processor set up at the Fort Greely landfill.



Action Information

Action Date Action Description DEC Staff
12/29/2000 Site Added to Database Diesel fuel. Bruce Wanstall
12/29/2000 Site Ranked Using the AHRM Preliminary ranking. Bruce Wanstall
1/3/2001 Update or Other Action Site is investigated under BRAC. It is expected that the Army will propose Method II cleanup levels without migration to groundwater. Report on modeling effort is expected early 2001. Greg Light
11/7/2002 Update or Other Action Site is now owned by the Space Missile Defense Command. Proposed Plan is 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. Groundwater monitoring will be conducted at a reduced scope of sampling that will be determined and agreed to between ADEC, EPA, and SMDC. Emily Youcha
12/14/2004 Update or Other Action The parcel was investigated in 1997 and found 6,600 sq. feet of impacted soil. DRO impacted soil extended to 70 feet bgs and a large zone of contamination exists at 40-50 feet bgs atop a silt-rich layer. DRO ranged up to 10,100 mg/kg and GRO up to 4,500 mg/kg. Concentrations of BTEX are benzene at 3.2 mg/kg, 34 mg/kg toluene, 46 mg/kg ethylbenzene, and 269 mg/kg xylene. Emily Youcha
12/14/2004 Update or Other Action About 3,000 cubic yards of soil was excavated in the summer of 1999 and transported to be thermally processed.. Emily Youcha
12/14/2004 Update or Other Action During summer of 2000, an additional 90 cubic yards of soil was removed to address xylene detections. Contaminated soil from parcel 30 was thermally processed in 2000 using a mobile thermal processor set up near the landfill in the stockpile area. Emily Youcha
12/14/2004 Update or Other Action Contamination in the upper 15 no longer exceeds ADEC Method Two Ingestion and Inhalation pathway cleanup levels. DRO, GRO, and BTEX remains at the site in the upper 70 feet that exceeds Method Two migration to groundwater cleanup levels. Emily Youcha
12/14/2004 Update or Other Action SMDC will place this site in the Installation Restoration Program. Ground-water monitoring will be conducted at this site. Administrative controls are in place and 5-yr reviews will take place to verify compliance with administrative controls. 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
9/30/2005 Meeting or Teleconference Held taff particpiated in a Restoration Advisory Board Meeting for Fort Greely on September 28. Emily Youcha
12/13/2006 GIS Position Updated Latitude and longitude updated using ADEC GIS and map in administrative file. Mitzi Read
12/20/2006 Update or Other Action Assigned new file number per project manager request. 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
3/21/2008 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 Report or Workplan 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 Report or Workplan Review - Other 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
11/16/2010 Site Characterization Workplan Approved Approved 2010 IRP Work Plan Addendum. Soil borings will be installed to delineate the vertical limits of contamination. Melody Debenham
9/4/2013 Report or Workplan 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 Report or Workplan 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
8/28/2015 Report or Workplan 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
9/29/2015 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 71099 Diesel Fuel Release. Melody Debenham

Contaminant Information

Name Level Description Media Comments
GRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
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
Toluene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
Ethylbenzene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
Xylenes (total) 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.


Requirements

Description Details
Groundwater Monitoring Groundwater monitoring will be conducted at a scope of sampling that will be determined and agreed to between ADEC, EPA, and SMDC. Annual report, 5 year reviews
Groundwater Use Restrictions The Dig Permit process is used to prevent installation of water production well(s) through the contaminated area 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.