Site Report: Murphy Dome AFS - Fuel Storage & WAA #1 (SS07)

Site Name:	Murphy Dome AFS - Fuel Storage & WAA #1 (SS07)
Address:	Murphy Dome, Murphy Dome Road, Fairbanks, AK 99709
File Number:	100.38.040
Hazard ID:	787
Status:	Active
Staff:	Matthew Fleetwood, 9072697608 matthew.fleetwood@alaska.gov
Latitude:	64.951944
Longitude:	-148.360000
Horizontal Datum:	NAD83

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

Waste Accumulation Area Number 1 was used from 1970 - 1985 for drum storage. The former Bulk Fuel Storage Area consisted of 2 large ASTs. Two major fuel spills occurred (approximately 1970 and 1981). High levels of DRO detected downslope from area and surface water samples contain DRO, BTEX, chlorinated solvents, and pesticides above regulatory levels. Environmental Restoration Program sites SS001 and SS007. Located east and southeast of the former power plant. The site is assigned a HIGH overall risk on the Air Force Relative Risk Evaluation Worksheet dated 8/23/95. The worksheet indicates that soil, groundwater (seeps), and surface water have been found to be contaminated with diesel fuel. Potential receptors are identified as site workers and visitors, land mammals and birds. The public of the Fairbanks area has easy access to the installation for hunting, hiking, berry picking, etc. Several vegetation dead zones along the hill have resulted from the fuel releases. The contamination associated with the site has migrated off Air Force property onto DNR land.

Action Information

Action Date	Action	Description	DEC Staff
3/21/1994	Site Characterization Report Approved	(Old R:Base Action Code = RI - Remedial Investigation). Received "Site Assessment Murphy Dome LRRS". Report details remedial investigation and contains risk assessment for all sites at Murphy Dome. Review conducted for RI and initial comments submitted via phone conversation.	Laura Noland
3/21/1994	Update or Other Action	Received "Site Assessment Murphy Dome LRRS". Report contains human health and ecological risk assessment for designated sites at Murphy Dome. Report concludes that the sites do not pose any health risk.	Laura Noland
4/21/1994	Site Added to Database	File# 100.38.040 Murphy Dome LRRS. Multiple contaminants.	Laura Noland
4/25/1994	Site Characterization Report Approved	(Old R:Base Action Code = SI - Site Investigation). Received and reviewed "Final Site Characterization Technical Memorandum Site Assessment Murphy Dome LRRS, Alaska" which provides sample results for all study sites at the facility.	Laura Noland
5/27/1994	Update or Other Action	(Old R:Base Action Code = RPL2 - Site Information Request Letter). Sent PRP-CS Database Notification Letter to RP requesting update and more environmental information concerning contaminated site.	Jeff Peterson
6/15/1994	Update or Other Action	(Old R:Base Action Code = SI - Site Investigation). Conducted site inspection of spill/vegetation dead zone area to ensure that contamination does not extend to wetlands area at base of hill.	Laura Noland
7/29/1994	Meeting or Teleconference Held	(Old R:Base Action Code = RI - Remedial Investigation). Attended meeting where Air Force and contractor presented remedial investigation work plan, plans for community relations, and management action plan. Public meeting planned for 9/94.	Laura Noland
8/5/1994	Update or Other Action	(Old R:Base Action Code = RI - Remedial Investigation). Reviewed "Draft Work Plan, Remedial Investigation/Feasibility Study dated July 1994" and sent comments and requested revised work plan.	Laura Noland
8/16/1994	Site Ranked Using the AHRM	Initial ranking.	Former Staff
10/17/1994	Update or Other Action	ADEC submitted comments for Human Health and Ecological Risk Assessment for Murphy Dome LRRS and Fort Yukon LRRS report dated 2/94. ADEC determined that risk assessment was not done according to EPA or state guidance and does not address future risk at sites.	Laura Noland
12/20/1994	Meeting or Teleconference Held	ADEC initiated meeting between Air Force and ADNR to formally inform ADNR of off-site fuel migration which is impacting state land.	Laura Noland
5/29/1996	Update or Other Action	(Old R:Base Action Code = RI - Remedial Investigation). U.S Air Force 611th Air Support Group, Final.	Tamar Stephens
3/24/1997	Update or Other Action	Site updated by Shannon and Wilson, based on the Air Force Relative Risk Evaluation Worksheet dated 8/23/95.	S&W
4/18/2001	Cleanup Plan Approved	Interim Remedial Action Decision Document was signed 4-12-01. The decision is to do hot spot removal of contaminated soil greater than 20,000 ppm DRO. Quantity is estimated at 8,000 cubic yards. Re-vegetation and erosion control are also planned to be done summer of 2001 in conjunction with a clean sweep project.	Patrice Buck
4/22/2002	Update or Other Action	Staff commented on Draft Decision Documents (Version 2) for Murphy Dome LRRS. Action entered by Sarah Riddle.	Patrice Buck
6/3/2005	Update or Other Action	Site visit of Murphy Dome IRP sites by Craven and Jaynes. Backfill of large excavations from the 2001 Interim Removal Action seem stable, although no vegetative regrowth is evident yet. Dead vegetation very apparent from area labeled as “Area B1” in the 2001 IRA report.	Colin Craven
7/29/2005	GIS Position Updated	Updated the location of the site in the database.	Colin Craven
1/10/2006	Meeting or Teleconference Held	DEC met with the Air Force and their contractors to discuss the next step for site restoration at Murphy Dome. The Air Force presented an assessment of cumulative risk posed using existing site data. The assessment was put together in 2004, but not submitted to DEC previously. DEC will review the assessment and will meet again with the Air Force in approximately a month.	Colin Craven
7/30/2007	Update or Other Action	DEC reviewed the draft work plan for additional site characterization at Murphy Dome, but was unable to accept the plan due to several deficiencies. DEC will meet soon with the Air Force to reconcile comments provided on the work plan.	Colin Craven
9/18/2007	Meeting or Teleconference Held	Site visit with Air Force contractors to walk through the areas proposed for sampling later in the year.	Colin Craven
10/1/2007	Site Characterization Workplan Approved	The Air Force provided a revised work plan for site characterization activities. After minor revisions and clarifications, DEC found the workplan to be acceptable.	Colin Craven
10/3/2007	Update or Other Action	DEC staff met with the Air Force and their contractors to get a field update based on the site characterization work. Based on the discussion, modifications were made to the lab analyses for the collected samples.	Colin Craven
2/24/2008	Exposure Tracking Model Ranking	Initial ranking with ETM completed.	Colin Craven
4/11/2011	Document, Report, or Work plan Review - other	Contaminated sites staff reviewed and sent comments on a draft Proposed Plan that presents final proposed remedial alternatives for five Installation Restoration Program sites at the Murphy Dome Long Range Radar Station.	Tamar Stephens
6/19/2015	Document, Report, or Work plan Review - other	Received work plan for data gap investigation concurrent with site SS01. The objectives of the work plan include 1) Evaluation of the effectiveness Ultraviolet Optical Screening Tool (UVOST) for characterization of soil contamination at the Murphy Dome sites, and 2)Delineation of the areal extent of petroleum hydrocarbon contamination above 250mg/kg associated with the boundaries of the SS01 and SS07 sites. DSMOA Joint Execution Plan (JEP) listed a Feasibility Study for this site, but this was changed to a data gap investigation as additional site characterization was warranted.	Joy Whitsel
3/23/2016	Site Characterization Report Approved	DEC approved the report entitled "Final Report for Data Gap Investigation at SS01 and SS07, Murphy Dome, Alaska". The purpose of the data gap investigation was to identify and evaluate data gaps remaining at the Murphy Dome SS01 and SS07 sites. The report described activities, results, and conclusions of the investigation, including the following: development of maps to show known contaminated areas and identify data gaps; UVOST screening to delineate the horizontal and vertical extent of petroleum hydrocarbon contamination in the investigation areas; collection of soil samples for correlation with the UVOST screening results, and for evaluation of contaminant concentration; and collection of surface water samples from the seeps to evaluate the potential for continued downgradient contaminant transport. The latter activity could not be completed because no seeps were found at the time of investigation.	Joy Whitsel
6/13/2018	Document, Report, or Work plan Review - other	The Alaska Department of Environmental Conservation (DEC) reviewed the “Draft Supplemental Remedial Investigation Work Plan, Murphy Dome Long Range Radar Station, Murphy Dome, Alaska, WAA #1 (SS007), WAA #2 (SS001)” dated April 2018. This work plan describes soil and groundwater sampling intended to address data gaps in site characterization at Murphy Dome Long Range Radar Station. Comments on the work plan provided to the U.S. Air Force via email.	Melinda Brunner
12/7/2018	Update or Other Action	Site assigned to DEC PM John O'Brien.	John O'Brien
1/3/2020	Document, Report, or Work plan Review - other	DEC reviewed Draft Report for Supplemental RI at SS001 and SS007. This report described the installation and subsequent decommissioning of 6 groundwater monitoring wells that were all dry, along with several soil boring sampling events and 'ephemeral water body (EWB)' sampling events. There were many exceedances for DRO and RRO in the soils, and one exceedance of RRO in an EWB. Historical surface water samples were above clean up levels for EDB and alpha-BHC. DEC has emailed comments to the USAF.	Tim Sharp
2/5/2020	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 71766 Diesel fuel storage leaks.	Tim Sharp
6/3/2020	Site Characterization Report Approved	DEC approved the Final Supplemental Remedial Investigation Work Plan, Revision 1 for Murphy Dome LRRS. The work plan is intended to characterize the site, address data gaps, and fully delineate fuel contamination in soils and surface water at sites SS001 and SS007, as well as fully delineating lead contamination in soil at site SS002. This will be accomplished by site wide UVOST sampling, soil borings near lead impacted soil, and surface water grab samples if encountered.	Tim Sharp
2/26/2021	Update or Other Action	DEC sent comments on the Murphy Dome RAO/ICLUC Draft Report. Cover for LF003 is in good condition, while soil staining and distressed vegetation is evident at SS007. The Remedial Investigation currently underway may provide more insight to soil and vegetation effects.	Tim Sharp
4/21/2021	Institutional Control Update	DEC Approved the Final 2020 RAO ICLUC Report. LF003 shows minor erosion, but not enough to warrant a response at this time. Discolored soil and vegetation was observed at SS007. Further investigations will continue in the future.	Tim Sharp
4/26/2021	Document, Report, or Work plan Review - other	DEC sent comments on the Draft LTM Report. Comments generally asked for incorporation of information from the 2020 RAO/ICLUC Report that was approved earlier in the month. The Supplemental Investigation Report should be arriving around Mid-May, which will give a better idea of the characterization and contaminants present at the site.	Tim Sharp
7/12/2021	Document, Report, or Work plan Review - other	DEC Approved the Final LTM WP for SS007 and LF003. Recommendations for future work beyond signage repair and IC inspections were not incorporated, but are expected to be taken into consideration under subsequent contracts.	Tim Sharp
10/7/2021	Document, Report, or Work plan Review - other	DEC sent comments on the Draft Supp RI Report. The report detailed further delineation of fuel, chlorinated solvent, and pesticide contamination at the site. Comments focused on regulation of EWBs as surface water sources and the administrative closure of SS001 by USAF.	Tim Sharp
3/9/2022	Document, Report, or Work plan Review - other	DEC sent comments on the Draft Murphy Dome Long Term Monitoring Report for SS007 and LF003. The report detailed Institutional Control/Land Use Control (IC/LUC) inspections, landfill cap inspections, and sign maintenance. DEC commented on the observation of discolored or stressed vegetation and petroleum odor at SS007. Further characterization of this area may be necessary.	Tim Sharp
5/13/2022	Document, Report, or Work plan Review - other	DEC Approved the Final 2021 IC/LUC LTM Report dated May 2022. All comments were incorporated appropriately to the report.	Tim Sharp
3/8/2023	Document, Report, or Work plan Review - other	DEC reviewed and provided comments for the Draft Final Long-Term Management Report Murphy Dome Long Range Radar Site, dated October 2022.The report describes the long term management activities conducted during the fall of 2022 for the Landfill Number 1 (LF003) and Waste Acumulation Area Number 1 and Bulk Fuel Storage Area (SS007) sites at the Murphy Dome Long Range Radar site located in Fairbanks, Alaska. Inspections of signs and site conditions were conducted at both sites along with a landfill inspection at LF003. Continued annual inspections were recommended for both LF003 and SS007. Additionally, based on findings from the 2020 remedial investigation, the expansion of site boundaries for SS007 was reccomended.	Ginna Quesada
8/1/2023	Document, Report, or Work plan Review - other	DEC approved the Final Long-Term Management Report Murphy Dome Long Range Radar Site, dated July 2023.	Ginna Quesada
9/26/2023	Document, Report, or Work plan Review - other	DEC provided comments regarding the Draft Preliminary Assessment Report for Aqueous Film-Forming Foam Areas Murphy Dome Long Range Radar Site, Alaska, dated September 2023. The report describes the document search and interviews to identify the potential presence of per- and polyfluoroalkyl substances (PFAS) associated with aqueous film-forming foam (AFFF) at the Murphy Dome Long Range Radar site located in Fairbanks, Alaska. The assessment recommended no further remedial action planned for the site.	Ginna Quesada
11/7/2023	Document, Report, or Work plan Review - other	DEC provided responses to comments regarding the redline Final Preliminary Assessment Report for Aqueous Film-Forming Foam Areas Murphy Dome Long Range Radar Site, Alaska, dated October 2023.	Ginna Quesada
11/30/2023	Document, Report, or Work plan Review - other	DEC reviewed and approved the Final Preliminary Assessment Report for Aqueous Film-Forming Foam Areas Murphy Dome Long Range Radar Site, Alaska, dated November 2023.	Ginna Quesada
12/13/2023	Document, Report, or Work plan Review - other	DEC submitted comments regarding the Draft Final 2023 Long-Term Management Report Murphy Dome Long Range Radar Site Sites LF003 and SS077, dated November 2023.	Ginna Quesada
1/23/2024	Meeting or Teleconference Held	Meeting with Air Force project manager to discuss the schedule for upcoming work in 2024.	Ginna Quesada
3/8/2024	Document, Report, or Work plan Review - other	DEC approved the Final 2023 Long-Term Management Report Murphy Dome Long Range Radar Site Sites LF003 and SS077, dated March 2024.	Ginna Quesada
5/31/2024	Document, Report, or Work plan Review - other	DEC provided comments on behalf of DEC and the Alaska Department of Natural Resources (DNR) regarding the Murphy Dome Long-range Radar Station, Alaska Sites SS001 And SS007 Decision Document Draft, dated April 2024. The Decision Document (DD) describes the selected remedy for addressing the remaining petroleum contamination at the Bulk Fuel Storage Area (SS007) and the Former Waste Accumulation Area (SS001) sites at the Murphy Dome Long Range Radar site located in Fairbanks, Alaska. The selected remedy proposes the implementation of land use controls to address subsurface contamination along with the excavation and removal of contaminated surface soil.	Ginna Quesada
6/12/2024	Document, Report, or Work plan Review - other	DEC provided comments regarding the Murphy Dome Long-range Radar Station, Alaska 2024 Work Plan Remedial Action – Construction At Murphy Dome Long-Range Radar Station Sites SS001 And SS007, dated May 2024. The work plan describes the proposed soil removal and sampling activities to address the remaining petroleum contamination at the Bulk Fuel Storage Area (SS007) and the Former Waste Accumulation Area (SS001) sites at the Murphy Dome Long Range Radar site located in Fairbanks, Alaska.	Ginna Quesada
7/22/2024	Document, Report, or Work plan Review - other	DEC approved the Murphy Dome Long-Range Radar Station Sites SS001 and SS007 Decision Document Final, dated July 2024. The Decision Document (DD) describes the selected remedy for addressing the remaining petroleum contamination at the Bulk Fuel Storage Area (SS007) and the Former Waste Accumulation Area (SS001) sites at the Murphy Dome Long Range Radar site located in Fairbanks, Alaska. The selected remedy proposes the implementation of land use controls to address subsurface contamination along with the excavation and removal of contaminated surface soil. The remaining volume of contamination that exceeds DEC’s maximum allowable concentrations in subsurface soil warrants further remedial activity before the sites can be closed with institutional controls.	Ginna Quesada
8/8/2024	Document, Report, or Work plan Review - other	DEC and DNR provided responses to comments for the Murphy Dome Long-Range Radar Station, Alaska 2024 Work Plan Remedial Action – Construction at Murphy Dome Long-Range Radar Station Sites SS001 And SS007, Draft Final, dated August 2024.	Ginna Quesada

Action Date

Action

Description

DEC Staff

3/21/1994

Site Characterization Report Approved

(Old R:Base Action Code = RI - Remedial Investigation). Received "Site Assessment Murphy Dome LRRS". Report details remedial investigation and contains risk assessment for all sites at Murphy Dome. Review conducted for RI and initial comments submitted via phone conversation.

Laura Noland

3/21/1994

Update or Other Action

Received "Site Assessment Murphy Dome LRRS". Report contains human health and ecological risk assessment for designated sites at Murphy Dome. Report concludes that the sites do not pose any health risk.

Laura Noland

4/21/1994

Site Added to Database

File# 100.38.040 Murphy Dome LRRS. Multiple contaminants.

Laura Noland

4/25/1994

Site Characterization Report Approved

(Old R:Base Action Code = SI - Site Investigation). Received and reviewed "Final Site Characterization Technical Memorandum Site Assessment Murphy Dome LRRS, Alaska" which provides sample results for all study sites at the facility.

Laura Noland

5/27/1994

Update or Other Action

(Old R:Base Action Code = RPL2 - Site Information Request Letter). Sent PRP-CS Database Notification Letter to RP requesting update and more environmental information concerning contaminated site.

Jeff Peterson

6/15/1994

Update or Other Action

(Old R:Base Action Code = SI - Site Investigation). Conducted site inspection of spill/vegetation dead zone area to ensure that contamination does not extend to wetlands area at base of hill.

Laura Noland

7/29/1994

Meeting or Teleconference Held

(Old R:Base Action Code = RI - Remedial Investigation). Attended meeting where Air Force and contractor presented remedial investigation work plan, plans for community relations, and management action plan. Public meeting planned for 9/94.

Laura Noland

8/5/1994

Update or Other Action

(Old R:Base Action Code = RI - Remedial Investigation). Reviewed "Draft Work Plan, Remedial Investigation/Feasibility Study dated July 1994" and sent comments and requested revised work plan.

Laura Noland

8/16/1994

Site Ranked Using the AHRM

Initial ranking.

Former Staff

10/17/1994

Update or Other Action

ADEC submitted comments for Human Health and Ecological Risk Assessment for Murphy Dome LRRS and Fort Yukon LRRS report dated 2/94. ADEC determined that risk assessment was not done according to EPA or state guidance and does not address future risk at sites.

Laura Noland

12/20/1994

Meeting or Teleconference Held

ADEC initiated meeting between Air Force and ADNR to formally inform ADNR of off-site fuel migration which is impacting state land.

Laura Noland

5/29/1996

Update or Other Action

(Old R:Base Action Code = RI - Remedial Investigation). U.S Air Force 611th Air Support Group, Final.

Tamar Stephens

3/24/1997

Update or Other Action

Site updated by Shannon and Wilson, based on the Air Force Relative Risk Evaluation Worksheet dated 8/23/95.

S&W

4/18/2001

Cleanup Plan Approved

Interim Remedial Action Decision Document was signed 4-12-01. The decision is to do hot spot removal of contaminated soil greater than 20,000 ppm DRO. Quantity is estimated at 8,000 cubic yards. Re-vegetation and erosion control are also planned to be done summer of 2001 in conjunction with a clean sweep project.

Patrice Buck

4/22/2002

Update or Other Action

Staff commented on Draft Decision Documents (Version 2) for Murphy Dome LRRS. Action entered by Sarah Riddle.

Patrice Buck

6/3/2005

Update or Other Action

Site visit of Murphy Dome IRP sites by Craven and Jaynes. Backfill of large excavations from the 2001 Interim Removal Action seem stable, although no vegetative regrowth is evident yet. Dead vegetation very apparent from area labeled as “Area B1” in the 2001 IRA report.

Colin Craven

7/29/2005

GIS Position Updated

Updated the location of the site in the database.

Colin Craven

1/10/2006

Meeting or Teleconference Held

DEC met with the Air Force and their contractors to discuss the next step for site restoration at Murphy Dome. The Air Force presented an assessment of cumulative risk posed using existing site data. The assessment was put together in 2004, but not submitted to DEC previously. DEC will review the assessment and will meet again with the Air Force in approximately a month.

Colin Craven

7/30/2007

Update or Other Action

DEC reviewed the draft work plan for additional site characterization at Murphy Dome, but was unable to accept the plan due to several deficiencies. DEC will meet soon with the Air Force to reconcile comments provided on the work plan.

Colin Craven

9/18/2007

Meeting or Teleconference Held

Site visit with Air Force contractors to walk through the areas proposed for sampling later in the year.

Colin Craven

10/1/2007

Site Characterization Workplan Approved

The Air Force provided a revised work plan for site characterization activities. After minor revisions and clarifications, DEC found the workplan to be acceptable.

Colin Craven

10/3/2007

Update or Other Action

DEC staff met with the Air Force and their contractors to get a field update based on the site characterization work. Based on the discussion, modifications were made to the lab analyses for the collected samples.

Colin Craven

2/24/2008

Exposure Tracking Model Ranking

Initial ranking with ETM completed.

Colin Craven

4/11/2011

Document, Report, or Work plan Review - other

Contaminated sites staff reviewed and sent comments on a draft Proposed Plan that presents final proposed remedial alternatives for five Installation Restoration Program sites at the Murphy Dome Long Range Radar Station.

Tamar Stephens

6/19/2015

Document, Report, or Work plan Review - other

Received work plan for data gap investigation concurrent with site SS01. The objectives of the work plan include 1) Evaluation of the effectiveness Ultraviolet Optical Screening Tool (UVOST) for characterization of soil contamination at the Murphy Dome sites, and 2)Delineation of the areal extent of petroleum hydrocarbon contamination above 250mg/kg associated with the boundaries of the SS01 and SS07 sites. DSMOA Joint Execution Plan (JEP) listed a Feasibility Study for this site, but this was changed to a data gap investigation as additional site characterization was warranted.

Joy Whitsel

3/23/2016

Site Characterization Report Approved

DEC approved the report entitled "Final Report for Data Gap Investigation at SS01 and SS07, Murphy Dome, Alaska". The purpose of the data gap investigation was to identify and evaluate data gaps remaining at the Murphy Dome SS01 and SS07 sites. The report described activities, results, and conclusions of the investigation, including the following: development of maps to show known contaminated areas and identify data gaps; UVOST screening to delineate the horizontal and vertical extent of petroleum hydrocarbon contamination in the investigation areas; collection of soil samples for correlation with the UVOST screening results, and for evaluation of contaminant concentration; and collection of surface water samples from the seeps to evaluate the potential for continued downgradient contaminant transport. The latter activity could not be completed because no seeps were found at the time of investigation.

Joy Whitsel

6/13/2018

Document, Report, or Work plan Review - other

The Alaska Department of Environmental Conservation (DEC) reviewed the “Draft Supplemental Remedial Investigation Work Plan, Murphy Dome Long Range Radar Station, Murphy Dome, Alaska, WAA #1 (SS007), WAA #2 (SS001)” dated April 2018. This work plan describes soil and groundwater sampling intended to address data gaps in site characterization at Murphy Dome Long Range Radar Station. Comments on the work plan provided to the U.S. Air Force via email.

Melinda Brunner

12/7/2018

Update or Other Action

Site assigned to DEC PM John O'Brien.

John O'Brien

1/3/2020

Document, Report, or Work plan Review - other

DEC reviewed Draft Report for Supplemental RI at SS001 and SS007. This report described the installation and subsequent decommissioning of 6 groundwater monitoring wells that were all dry, along with several soil boring sampling events and 'ephemeral water body (EWB)' sampling events. There were many exceedances for DRO and RRO in the soils, and one exceedance of RRO in an EWB. Historical surface water samples were above clean up levels for EDB and alpha-BHC. DEC has emailed comments to the USAF.

Tim Sharp

2/5/2020

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 71766 Diesel fuel storage leaks.

Tim Sharp

6/3/2020

Site Characterization Report Approved

DEC approved the Final Supplemental Remedial Investigation Work Plan, Revision 1 for Murphy Dome LRRS. The work plan is intended to characterize the site, address data gaps, and fully delineate fuel contamination in soils and surface water at sites SS001 and SS007, as well as fully delineating lead contamination in soil at site SS002. This will be accomplished by site wide UVOST sampling, soil borings near lead impacted soil, and surface water grab samples if encountered.

Tim Sharp

2/26/2021

Update or Other Action

DEC sent comments on the Murphy Dome RAO/ICLUC Draft Report. Cover for LF003 is in good condition, while soil staining and distressed vegetation is evident at SS007. The Remedial Investigation currently underway may provide more insight to soil and vegetation effects.

Tim Sharp

4/21/2021

Institutional Control Update

DEC Approved the Final 2020 RAO ICLUC Report. LF003 shows minor erosion, but not enough to warrant a response at this time. Discolored soil and vegetation was observed at SS007. Further investigations will continue in the future.

Tim Sharp

4/26/2021

Document, Report, or Work plan Review - other

DEC sent comments on the Draft LTM Report. Comments generally asked for incorporation of information from the 2020 RAO/ICLUC Report that was approved earlier in the month. The Supplemental Investigation Report should be arriving around Mid-May, which will give a better idea of the characterization and contaminants present at the site.

Tim Sharp

7/12/2021

Document, Report, or Work plan Review - other

DEC Approved the Final LTM WP for SS007 and LF003. Recommendations for future work beyond signage repair and IC inspections were not incorporated, but are expected to be taken into consideration under subsequent contracts.

Tim Sharp

10/7/2021

Document, Report, or Work plan Review - other

DEC sent comments on the Draft Supp RI Report. The report detailed further delineation of fuel, chlorinated solvent, and pesticide contamination at the site. Comments focused on regulation of EWBs as surface water sources and the administrative closure of SS001 by USAF.

Tim Sharp

3/9/2022

Document, Report, or Work plan Review - other

DEC sent comments on the Draft Murphy Dome Long Term Monitoring Report for SS007 and LF003. The report detailed Institutional Control/Land Use Control (IC/LUC) inspections, landfill cap inspections, and sign maintenance. DEC commented on the observation of discolored or stressed vegetation and petroleum odor at SS007. Further characterization of this area may be necessary.

Tim Sharp

5/13/2022

Document, Report, or Work plan Review - other

DEC Approved the Final 2021 IC/LUC LTM Report dated May 2022. All comments were incorporated appropriately to the report.

Tim Sharp

3/8/2023

Document, Report, or Work plan Review - other

DEC reviewed and provided comments for the Draft Final Long-Term Management Report Murphy Dome Long Range Radar Site, dated October 2022.The report describes the long term management activities conducted during the fall of 2022 for the Landfill Number 1 (LF003) and Waste Acumulation Area Number 1 and Bulk Fuel Storage Area (SS007) sites at the Murphy Dome Long Range Radar site located in Fairbanks, Alaska. Inspections of signs and site conditions were conducted at both sites along with a landfill inspection at LF003. Continued annual inspections were recommended for both LF003 and SS007. Additionally, based on findings from the 2020 remedial investigation, the expansion of site boundaries for SS007 was reccomended.

Ginna Quesada

8/1/2023

Document, Report, or Work plan Review - other

DEC approved the Final Long-Term Management Report Murphy Dome Long Range Radar Site, dated July 2023.

Ginna Quesada

9/26/2023

Document, Report, or Work plan Review - other

DEC provided comments regarding the Draft Preliminary Assessment Report for Aqueous Film-Forming Foam Areas Murphy Dome Long Range Radar Site, Alaska, dated September 2023. The report describes the document search and interviews to identify the potential presence of per- and polyfluoroalkyl substances (PFAS) associated with aqueous film-forming foam (AFFF) at the Murphy Dome Long Range Radar site located in Fairbanks, Alaska. The assessment recommended no further remedial action planned for the site.

Ginna Quesada

11/7/2023

Document, Report, or Work plan Review - other

DEC provided responses to comments regarding the redline Final Preliminary Assessment Report for Aqueous Film-Forming Foam Areas Murphy Dome Long Range Radar Site, Alaska, dated October 2023.

Ginna Quesada

11/30/2023

Document, Report, or Work plan Review - other

DEC reviewed and approved the Final Preliminary Assessment Report for Aqueous Film-Forming Foam Areas Murphy Dome Long Range Radar Site, Alaska, dated November 2023.

Ginna Quesada

12/13/2023

Document, Report, or Work plan Review - other

DEC submitted comments regarding the Draft Final 2023 Long-Term Management Report Murphy Dome Long Range Radar Site Sites LF003 and SS077, dated November 2023.

Ginna Quesada

1/23/2024

Meeting or Teleconference Held

Meeting with Air Force project manager to discuss the schedule for upcoming work in 2024.

Ginna Quesada

3/8/2024

Document, Report, or Work plan Review - other

DEC approved the Final 2023 Long-Term Management Report Murphy Dome Long Range Radar Site Sites LF003 and SS077, dated March 2024.

Ginna Quesada

5/31/2024

Document, Report, or Work plan Review - other

DEC provided comments on behalf of DEC and the Alaska Department of Natural Resources (DNR) regarding the Murphy Dome Long-range Radar Station, Alaska Sites SS001 And SS007 Decision Document Draft, dated April 2024. The Decision Document (DD) describes the selected remedy for addressing the remaining petroleum contamination at the Bulk Fuel Storage Area (SS007) and the Former Waste Accumulation Area (SS001) sites at the Murphy Dome Long Range Radar site located in Fairbanks, Alaska. The selected remedy proposes the implementation of land use controls to address subsurface contamination along with the excavation and removal of contaminated surface soil.

Ginna Quesada

6/12/2024

Document, Report, or Work plan Review - other

DEC provided comments regarding the Murphy Dome Long-range Radar Station, Alaska 2024 Work Plan Remedial Action – Construction At Murphy Dome Long-Range Radar Station Sites SS001 And SS007, dated May 2024. The work plan describes the proposed soil removal and sampling activities to address the remaining petroleum contamination at the Bulk Fuel Storage Area (SS007) and the Former Waste Accumulation Area (SS001) sites at the Murphy Dome Long Range Radar site located in Fairbanks, Alaska.

Ginna Quesada

7/22/2024

Document, Report, or Work plan Review - other

DEC approved the Murphy Dome Long-Range Radar Station Sites SS001 and SS007 Decision Document Final, dated July 2024. The Decision Document (DD) describes the selected remedy for addressing the remaining petroleum contamination at the Bulk Fuel Storage Area (SS007) and the Former Waste Accumulation Area (SS001) sites at the Murphy Dome Long Range Radar site located in Fairbanks, Alaska. The selected remedy proposes the implementation of land use controls to address subsurface contamination along with the excavation and removal of contaminated surface soil. The remaining volume of contamination that exceeds DEC’s maximum allowable concentrations in subsurface soil warrants further remedial activity before the sites can be closed with institutional controls.

Ginna Quesada

8/8/2024

Document, Report, or Work plan Review - other

DEC and DNR provided responses to comments for the Murphy Dome Long-Range Radar Station, Alaska 2024 Work Plan Remedial Action – Construction at Murphy Dome Long-Range Radar Station Sites SS001 And SS007, Draft Final, dated August 2024.

Ginna Quesada

Contaminant Information

Name

Level Description

Media

Comments

Control Type

Type

Details

Requirements

Description

Details

2022 Long Term Management Report

Hazard ID	Site Name	File Number
788	Murphy Dome AFS - WAA #2 (SS01)	100.38.040

Hazard ID

Site Name

File Number

788

Murphy Dome AFS - WAA #2 (SS01)

100.38.040

Missing Location Data

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Site Report: Murphy Dome AFS - Fuel Storage & WAA #1 (SS07)

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

2022 Long Term Management Report

Missing Location Data

State of Alaska Department of Environmental Conservation