Site Report: Fort Greely Bldg 144 BRAC 101

Site Name:	Fort Greely Bldg 144 BRAC 101
Address:	C Street Building 144, Fort Greely, AK 99731
File Number:	141.38.062
Hazard ID:	3837
Status:	Cleanup Complete
Staff:	No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude:	63.987127
Longitude:	-145.724651
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 former Building 144 site is also known as Base Realignment and Closure (BRAC) 101. The former Building 144 was a mess hall and bakery, and had a 1,000-gallon underground storage tank (UST). The UST and associated piping was removed in 1995 and replaced with an above ground storage tank (AST). Petroleum contaminated soil was encountered during UST removal activities. The building was demolished between 1998 and 2006. Site characterization activities have occurred over several years to delineate the soil contamination (1997, 1998, 2007, 2009, 2010, 2011 and 2013). In 2009, approximately 550 cubic yards of petroleum contaminated soil was removed to a depth of 15 feet. In 2010, additional excavation work was attempted but all sample results were below cleanup levels so all excavated soil was returned as backfill. A new fire station was constructed to the south of this site in 2011. The building is approximately 30 feet from the petroleum contamination, and was constructed with a mitigation system to prevent petroleum vapor intrusion. Additional petroleum contaminated soil was encountered during construction activities, and a total of 130 cubic yards of soil was removed. Diesel range organics (DRO), volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs) remains in the subsurface (20-45 feet below ground surface) at concentrations exceeding DEC's Table B2 Method Two migration to groundwater cleanup levels, but below inhalation and ingestion cleanup levels. The soil contamination around the former UST location has been delineated, however soil borings drilled to the south around the new fire station have petroleum contamination that has not been delineated, or removed. Groundwater at this site has not been sampled, however soil borings from within the former UST area show a decreasing contamination trend to concentrations well below DEC cleanup levels down to 60 and 80 feet below ground surface. DEC has recommended the U.S. Army provide additional information regarding the fire station's vapor intrusion mitigation system, and requested clarifying information regarding the groundwater use and subsurface soil delineation.

Action Information

Action Date	Action	Description	DEC Staff
3/12/2001	Site Added to Database	Diesel fuel.	Bruce Wanstall
12/14/2004	Update or Other Action	Soil borings indicate maximum DRO concentration 56 mg/kg and RRO at 100 mg/kg.	Emily Youcha
12/14/2004	Update or Other Action	Site will be placed in the compliance program and a metal detector will be used to find remaining piping left behind.	Emily Youcha
12/14/2004	Update or Other Action	New construction is planned for this site in 2005 and contamination and piping may be identified during that time and will be addressed then.	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
11/27/2006	Update or Other Action	Per project manager instruction assign new file number. Number was 141.38.036, now 141.38.062.	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
7/23/2010	Site Characterization Workplan Approved	Approved 2010 Work Plan. Approximately 20 cubic yards of petroleum contaminated soil will be removed.	Melody Debenham
4/5/2011	Site Characterization Report Approved	Approved 2009 IRP Remedial Investigation report. 550 cubic yards of petroleum contaminated soil was excavated from this site. Soil samples from borings and soil confirmation samples collected from the excavation show that contaminated soil still remains on site. The new fire station will be constructed adjacent to the excavation area, and will include methods to prevent vapor intrustion in the design and construction.	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 2013 IRP work plan which includes installing soil borings at BRAC 101/Bldg 144 to investigate the extent of remaining contamination encountered during construction of the Fire Station located at the former Bldg 144 site.	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 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	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
10/9/2015	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 74812 Former 1,000-gallon UST.	Melody Debenham
12/6/2023	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 74812 Former 1,000-gallon UST.	Tim Sharp
7/2/2024	Update or Other Action	The Alaska Department of Environmental Conservation (DEC) has completed the review of the Environmental Summary Report: FGLY-071_BLDG 144 (101) [02341.1055] which details the historical records, environmental investigations, and remedial actions for the building 144 site, and to evaluate the extent and magnitude of remaining contamination against the current cleanup standards. All responses to comments have been incorporated or closed out in the final document and are accepted. 7/2/2024 approval letter sent to Army.	Carly Jensen
10/11/2024	Cleanup Complete Determination Issued	Department of Environmental Conservation, Contaminated Sites Program (DEC) has completed a review of the environmental records associated with the Fort Greely Bldg 144 BRAC 101 located at C Street in Fort Greely, Alaska. Based on the information provided to date, it has been determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment and no further remedial action will be needed. This Cleanup Complete determination is based on the administrative record for the Fort Greely Bldg 144 BRAC 101 maintained by DEC and a Cumulative Risk Evaluation which determined that residual contaminant concentrations meet the human health cumulative risk criteria for residential land use.	Carly Jensen

Action Date

Action

Description

DEC Staff

3/12/2001

Site Added to Database

Diesel fuel.

Bruce Wanstall

12/14/2004

Update or Other Action

Soil borings indicate maximum DRO concentration 56 mg/kg and RRO at 100 mg/kg.

Emily Youcha

12/14/2004

Update or Other Action

Site will be placed in the compliance program and a metal detector will be used to find remaining piping left behind.

Emily Youcha

12/14/2004

Update or Other Action

New construction is planned for this site in 2005 and contamination and piping may be identified during that time and will be addressed then.

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

11/27/2006

Update or Other Action

Per project manager instruction assign new file number. Number was 141.38.036, now 141.38.062.

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

7/23/2010

Site Characterization Workplan Approved

Approved 2010 Work Plan. Approximately 20 cubic yards of petroleum contaminated soil will be removed.

Melody Debenham

4/5/2011

Site Characterization Report Approved

Approved 2009 IRP Remedial Investigation report. 550 cubic yards of petroleum contaminated soil was excavated from this site. Soil samples from borings and soil confirmation samples collected from the excavation show that contaminated soil still remains on site. The new fire station will be constructed adjacent to the excavation area, and will include methods to prevent vapor intrustion in the design and construction.

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 2013 IRP work plan which includes installing soil borings at BRAC 101/Bldg 144 to investigate the extent of remaining contamination encountered during construction of the Fire Station located at the former Bldg 144 site.

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 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

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

10/9/2015

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 74812 Former 1,000-gallon UST.

Melody Debenham

12/6/2023

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 74812 Former 1,000-gallon UST.

Tim Sharp

7/2/2024

Update or Other Action

The Alaska Department of Environmental Conservation (DEC) has completed the review of the Environmental Summary Report: FGLY-071_BLDG 144 (101) [02341.1055] which details the historical records, environmental investigations, and remedial actions for the building 144 site, and to evaluate the extent and magnitude of remaining contamination against the current cleanup standards. All responses to comments have been incorporated or closed out in the final document and are accepted. 7/2/2024 approval letter sent to Army.

Carly Jensen

10/11/2024

Cleanup Complete Determination Issued

Department of Environmental Conservation, Contaminated Sites Program (DEC) has completed a review of the environmental records associated with the Fort Greely Bldg 144 BRAC 101 located at C Street in Fort Greely, Alaska. Based on the information provided to date, it has been determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment and no further remedial action will be needed. This Cleanup Complete determination is based on the administrative record for the Fort Greely Bldg 144 BRAC 101 maintained by DEC and a Cumulative Risk Evaluation which determined that residual contaminant concentrations meet the human health cumulative risk criteria for residential land use.

Carly Jensen

Contaminant Information

Name	Level Description	Media
DRO	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil
GRO	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil
Naphthalene	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil
1,2,4-Trimethylbenzene	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil
1,3,5-Trimethylbenzene	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil
2-Methylnaphthalene	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil
1-Methylnaphthalene	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil

Name

Level Description

Media

Comments

DRO