Site Report: Bear Creek RRS Vehicle Maint Shop SS002

Site Name:	Bear Creek RRS Vehicle Maint Shop SS002
Address:	9 Mi. NE of Tanana Village, Tanana, AK 99777
File Number:	780.38.002.06
Hazard ID:	793
Status:	Cleanup Complete
Staff:	No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude:	65.254649
Longitude:	-151.923957
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

Air Force IRP site SS002. The former vehicle maintenance shop, which contained floor drains, was operated from 1959 to 1981. Contaminants of concern included petroleum products, metals from waste oils, lead-acid batteries, and PCBs. The building was demolished in 1996. The site was covered with soil in 1997 and revegetated, although due to extensive erosion additional soil cover and revegetation work was conducted in 2000. Continued erosion of the soil cover was documented in 2001, and its current condition is unknown. Unknown quantities of PCB-contaminated soil were excavated and removed from the site in 1984 and 1985. Sampling in 1992 documented lead and DRO contamination in the former sump and floor drain, however, subsequent surface and subsurface soil sampling conducted during the Remedial Investigation did not document any contamination that exceeded cleanup levels. Soil borings advanced up to 41 feet below the ground surface did not find groundwater. A thin layer of water saturation at depth was found, and the sampled pore water was contaminated with DRO, volatile and semivolatile petroleum constituents, and chlorinated solvents. The site is well drained with no active surface water sources, therefore surface water and aquatic sediments are not likely to be present. Site access is unlimited to people and wildlife. The site is assigned a MEDIUM overall risk on the Air Force Relative Risk Evaluation Worksheet dated 9/11/95.

Action Information

Action Date	Action	Description	DEC Staff
7/1/1981	Interim Removal Action Approved	(Old R:Base Action Code = REM - Removal / Excavation). Air Force removed approximately 300 gallons of PCB fluid from site sometime in July 1981.	Former Staff
6/1/1983	Interim Removal Action Approved	(Old R:Base Action Code = REM - Removal / Excavation). PCB contaminated soil discovered and partial cleanup performed in summer of 1983.	Former Staff
2/29/1984	Update or Other Action	(Old R:Base Action Code = FI - Field Inspection (General)). F. Madison of Bureau of Indian Affairs obtained surface water, soil, and whitefish tissue samples from Bear Creek. No PCBs were detected by laboratory analyses.	Former Staff
7/1/1985	Interim Removal Action Approved	(Old R:Base Action Code = REM - Removal / Excavation). Further cleanup of PCB contaminated soil.	Former Staff
4/1/1989	Preliminary Assessment Approved	"IRP Preliminary Assessment, Bear Creek Radio Relay Station, Alaska" report dated April, 1989 concludes that small quantities of hazardous materials were used at the facility. No evidence of contamination was visible at the time of the site visit, but buried drums and waste liquids may have been disposed of at the site. Floor drains at the vehicle maintenance shop may be connected to a dry well.	Former Staff
1/18/1991	Site Ranked Using the AHRM	Initial ranking.	Former Staff
6/16/1992	Preliminary Assessment Approved	Reviewed Preliminary Assessment report dated 1989 and conducted complete file review to prepare for site visit.	Laura Noland
7/16/1992	Update or Other Action	(Old R:Base Action Code = RECN - Site Reconnaissance (CS)). Conducted site inspection with Air Force personnel. Contamination issues noted include floor drains in two vehicle maintenance buildings and possible TPH contamination near bulk fuel tanks. No obvious soil stains.	Laura Noland
8/24/1992	Update or Other Action	(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Reviewed Draft Field Sampling Plan and QA/QC for Bear Creek RRS dated August 1992 completed by ENSR Consulting and Engineering. Requested that downgradient stream sediment be sampled.	Laura Noland
6/28/1993	Interim Removal Action Approved	Received PCB sample results which indicate up to 1,000 ppm PCB found near the doorway of the Equipment Building. ADEC informed Air Force that either an emergency removal and/or warning signs would need to be pursued.	Laura Noland
6/30/1993	Update or Other Action	(Old R:Base Action Code = SI - Site Investigation). Received "Final Site Inspection of the Bear Creek radio Relay station at Tanana, Alaska dated June 1993. Inspection conducted by ENSR for Air Force.	Laura Noland
7/1/1993	Update or Other Action	(Old R:Base Action Code = SI - Site Investigation). Received Final Site Inspection of the Bear Creek Radio Relay Station at Tanana, Alaska.	Laura Noland
8/13/1993	Update or Other Action	(Old R:Base Action Code = SI - Site Investigation). Conducted review of Final Site Inspection report.	Laura Noland
11/30/1993	Update or Other Action	(Old R:Base Action Code = NFA - No Further Action Required (CERCLA)). ADEC did not close site, but EPA determined facility is No Further Action based on HRS ranking.	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
3/28/1996	Meeting or Teleconference Held	ADEC staff Kris M., Laura N., Tamar S. met with Jill Chounard regarding demolition/ onsite landfill for disposal of demolition debris at site. There is one identified PCB hot spot for which contaminated debris and soil will be excluded from landfill. After demolition/landfilling, contaminated sites issues will be addressed.	Tamar Stephens
1/23/1997	Site Added to Database	Multiple contaminants. Site added by Shannon and Wilson. See also Reckey 198931X902510.	S&W
3/24/1997	Update or Other Action	Site updated by Shannon and Wilson, based on the Air Force Relative Risk Evaluation Worksheets dated 9/11/95. Individual IRP sites assigned separate Reckey numbers. See Comments field on the Problem/Comments Tab for a list of Reckey numbers.	S&W
6/1/1998	Site Characterization Workplan Approved	RI performed at facility.	Patrice Buck
12/1/1998	Update or Other Action	RI Report Draft submitted to ADEC.	Patrice Buck
1/19/1999	Update or Other Action	Revised Draft Conceptual Site and Risk Assessment Work Plan reviewed.	Patrice Buck
11/1/1999	Update or Other Action	Received draft Proposed Plan sent letter 12/10/99.	Patrice Buck
12/1/1999	Risk Assessment Report Approved	Staff review RI report and approved RA.	Patrice Buck
12/20/1999	Update or Other Action	Response to Draft Proposed Plan for the Bear Creek RRS. Action entered by Sarah Riddle.	Patrice Buck
3/2/2001	Update or Other Action	Response to Draft Proposed Plan for the Bear Creek RRS, Version 2. Action entered by Sarah Riddle.	Patrice Buck
2/26/2002	Update or Other Action	Response to Draft Proposed Plan for the Bear Creek RRS, Version 3. Action entered by Sarah Riddle.	Patrice Buck
3/11/2002	Update or Other Action	Response to Draft Proposed Plan for the Bear Creek RRS, Version 4. Action entered by Sarah Riddle.	Patrice Buck
3/26/2002	Proposed Plan	Staff approved a Proposed Plan for four sites at top camp (LF01, SS02, SS03, and SS04). Public meeting is schedule for April 22, 2002 in Tanana. It has been determined that there is no complete migration to groundwater pathway at the top camp. Contamination levels sampled in the 1998 RI did not exceed the Method 2 inhalation and ingestion levels with the exception of 1.2 ppm PCB level in LF02. The Air Force is proposing to re-grade and re-seed the area to preserve the cap and conduct LTM at LF01.	Patrice Buck
3/28/2002	Update or Other Action	Response to Draft Community Relations Plan for the Bear Creek RRS. Approval expected after comments addressed. Action entered by Sarah Riddle.	Patrice Buck
9/11/2002	Meeting or Teleconference Held	Staff attended a Tribal Government to Government meeting in Tanana. Present at the meeting were Alaska Area Native Health Service (AANHS), Alaska Native Tribal Health Consortium (ANTHC), Agency for Toxic Substances and Disease Registry (ATSDR), the Air Force 611th, FAA, EPA, Corps of Engineers, and tribal members and their consultants. In June 2002, some of these agencies met with the Tanana Tribal Council (not including DEC) to discuss an Interagency Tribal Coordinated Environment Agreement. The document had been revised from the first meeting and the Tribe requested comments on this draft by 9/30/02. A teleconference is schedule for 10/18/02 to discuss revisions. A goal of signing the document by12/1/02 was set. The purpose of the agreement is for various agencies to work together in identifying sources, to develop environmental profiles and assessment reports, and identify multi-phase corrective actions. Staff is reviewing four decision documents and public comments to the proposed plan.	Patrice Buck
10/4/2002	Update or Other Action	Review of draft Decision Document received August 28, 2002. Comments provided. Action entered by Sarah Riddle	Patrice Buck
1/29/2003	Update or Other Action	DEC sent e-mail with comment on Cumulative Risk Tech Memo. Error included including arsenic (since it is background) and use industrial levels. Request the memo be resubmitted.	Patrice Buck
5/21/2003	Update or Other Action	Recieved revised DDs. They are lacking revision suggested in previous comments.	Patrice Buck
4/28/2005	Meeting or Teleconference Held	DEC attended a meeting with the Air Force and their contractors discussing a work plan for 2005 site characterization. This field work will be for the few remaining Installation Restoration Program (IRP) sites that require further action. The Air Force is also hoping to create Decision Documents for other IRP sites at the facility that were drafted previously, but never completed. These IRP sites are presumed to require no further remedial action. DEC agreed that the scope of work for 2005 was appropriate, and will review historical work to ensure that the Air Force’s assessment of which sites require further remedial action is correct.	Colin Craven
7/13/2005	GIS Position Updated	Location of former radio relay facility corrected by USGS map interpolation.	Colin Craven
7/22/2005	Update or Other Action	DEC participated a site visit with the Air Force and their contractors. The main purpose of the visit was to inspect three new IRP sites where additional site characterization will occur this August, and to meet with the Tanana Tribal Council to present the plans for the site characterization. The cap and revegetation at the site demolition landfill on the hilltop of the former relay station appeared to be in good condition.	Colin Craven
7/28/2005	Site Characterization Workplan Approved	Meetings with the Air Force and its contractors resolved all comments and questions on the draft work plan. Field work should begin in early August 2005.	Colin Craven
3/1/2007	Exposure Tracking Model Ranking	Initial ranking.	Lisa Maserjian
11/15/2007	Update or Other Action	A Draft ROD was submitted to the Department for the Yukon River POL, Vehicle Maintenance Shop, Fuel Storage Area, Equipment Building, and Barrel Storage Area, DEC has reviewed the draft ROD and will provide comments. The 1998 Vehicle Maintenance Shop Soil sampling results are summarized in the ROD. DRO was detected up to 10,000 mg/kg, GRO up to 910 mg/Kg. VOCs, SVOCs, Pesticides, and PCBs were either below MTG cleanup levels, or below 1/10th of the Inhalation and Ingestion cleanup levels.	Kim DeRuyter
12/10/2007	Update or Other Action	A preliminary conceptual site model for the Bear Creek RRS can be found in section 7 of the September 1999 Final Remedial Investigation Report.	Kim DeRuyter
9/16/2008	Update or Other Action	DEC sent comments to the Draft/Final ROD. The ROD included SS002 the Vehicle Maintenance Shop, SS003, the Fuel Storage Area, SS004 the Equipment Building, SS006 the Barrel Storage Area, and SS008 the POL Site by the yukon River. Residual soil contamination at these sites is below risk based levels. The completion of the Draft/Final ROD was delayed while DEC revised the Site Closure Proceedures and Policy Guidance. The remedial action objective for the sites is no further action. The site status will change to cleanup complete with no institutional controls upon signature of the Final ROD.	Kim DeRuyter
2/20/2009	Update or Other Action	Met with Steve Hunt the new Air Force PM in the Fairbanks office on 2/19/09 to discuss the Proposed Plans for the Borrow Pit, LFO1, and Equipment building sites and DECs comments to the Draft Final (no further action) record of decision. Sent a letter outlining DECs final comments on the ROD on 2/20/09.	Kim DeRuyter
7/30/2009	Cleanup Complete Determination Issued	John Halverson signed a no further action Record of Decision for Four sites at the Bear Creek Radio Relay Station. The ROD included the Vehicle Maintenance Shop. PCB soils were removed from the site in 1985. Petroleum contamination below health based cleanup levels remains in subsurface soil at the site. The site has been capped and is revegetating with grass and small willows.	Kim DeRuyter
10/14/2013	Update or Other Action	On Sept 24, 2013, ADEC concurred with a workplan prepared by Jacobs Eng, for the AF, to survey the boundaries of SS002, SS003 and SS008 for use in documenting areas with residual petroleum in soil to aid in proper future soil managment. The plan also includes provisions for inspecting and verifying proper closure of an abandoned underground fuel pipeline between the former Equipment Building and the Fuel Storage Area.	John Halverson
12/20/2013	Update or Other Action	Received Draft Survey Report: Site Closure Documentation for Sites SS002, SS003, and SS008, Bear Creek RRS, Alaska (CDRL A001E)	Meredith Savage
2/4/2014	Update or Other Action	Reviewed and approved as final- Draft Survey Report: Site Closure Documentation for Sites SS002, SS003, and SS008, Bear Creek Radio Realy Station (RRS), Alaska.	Meredith Savage
2/21/2014	Update or Other Action	Final report received- Survey Report: Site Closure Documentation for Sites SS002, SS003, and SS008, Bear Creek Radio Realy Station (RRS), Alaska.	Meredith Savage
12/4/2014	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 71772 Vehicle Maint Shop.	Meredith Savage
12/5/2014	Update or Other Action	On July 30, 2009, ADEC signed the no further action ROD for four sites at the Bear Creek Radio Relay Station, which included the former Vehicle Maintenance Shop, SS002 site. However, the ROD included a requirement for a survey of site boundaries, delineation of residual contamination, and location and inspection of a buried pipeline at site SS003. This work was carried out in September 2013 and the results were presented in two reports (see entry for 2/21/2014). As of this entry, ADEC has updated the Exposure Tracking Model data base and drafted a formal closure letter for the sites.	Meredith Savage
12/12/2014	Update or Other Action	ADEC Contaminated Sites Program has completed a review of environmental records associated with the Bear Creek Radio Relay Station (RRS) sites SS002, SS003, and SS008. Based on this review we are issuing an updated Cleanup Complete determination for these named sites. The documentation of residual contamination remaining at these sites as stipulated in the June 1, 2009 Record of Decision (ROD) titled Final Record of Decision for Vehicle Maintenance Shop (SS002, Fuel Storage Area (SS003, Barrel Storage Area (SS006), POL Site by Yukon River (SS008) Bear Creek Radio Relay Station, Alaska, has been completed. After receiving the Site Closure Documentation report for Bear Creek Sites SS002, SS003, and SS008, ADEC used its Exposure Tracking Model (ETM) to evaluate risk of exposure to the remaining contaminants (DRO) for each of the three sites. Exposure pathways are the conduits by which contamination may reach human or ecological receptors. The ETM rankings for sites SS002, SS003, and SS008 show the pathways as either De-Minimis Exposure (exposure is negligible) or Pathway Incomplete (no direct exposure pathway). ADEC has determined that there is no unacceptable risk to human health or the environment at Bear Creek RRS sites SS002, SS003, and SS008, and these sites have been granted an updated Cleanup Complete determination.	Meredith Savage
9/29/2023	CERCLA PA	On this date, DEC reviewed the Draft Preliminary Assessment Report for Aqueous Film-Forming Foam (AFFF) areas, Bear Creek Radio Relay Station, Alaska. No AFFF sources (fire training or non-fire training) areas were identified.	Cascade Galasso-Irish

Action Date

Action

Description

DEC Staff

7/1/1981

Interim Removal Action Approved

(Old R:Base Action Code = REM - Removal / Excavation). Air Force removed approximately 300 gallons of PCB fluid from site sometime in July 1981.

Former Staff

6/1/1983

Interim Removal Action Approved

(Old R:Base Action Code = REM - Removal / Excavation). PCB contaminated soil discovered and partial cleanup performed in summer of 1983.

Former Staff

2/29/1984

Update or Other Action

(Old R:Base Action Code = FI - Field Inspection (General)). F. Madison of Bureau of Indian Affairs obtained surface water, soil, and whitefish tissue samples from Bear Creek. No PCBs were detected by laboratory analyses.

Former Staff

7/1/1985

Interim Removal Action Approved

(Old R:Base Action Code = REM - Removal / Excavation). Further cleanup of PCB contaminated soil.

Former Staff

4/1/1989

Preliminary Assessment Approved

"IRP Preliminary Assessment, Bear Creek Radio Relay Station, Alaska" report dated April, 1989 concludes that small quantities of hazardous materials were used at the facility. No evidence of contamination was visible at the time of the site visit, but buried drums and waste liquids may have been disposed of at the site. Floor drains at the vehicle maintenance shop may be connected to a dry well.

Former Staff

1/18/1991

Site Ranked Using the AHRM

Initial ranking.

Former Staff

6/16/1992

Preliminary Assessment Approved

Reviewed Preliminary Assessment report dated 1989 and conducted complete file review to prepare for site visit.

Laura Noland

7/16/1992

Update or Other Action

(Old R:Base Action Code = RECN - Site Reconnaissance (CS)). Conducted site inspection with Air Force personnel. Contamination issues noted include floor drains in two vehicle maintenance buildings and possible TPH contamination near bulk fuel tanks. No obvious soil stains.

Laura Noland

8/24/1992

Update or Other Action

(Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Reviewed Draft Field Sampling Plan and QA/QC for Bear Creek RRS dated August 1992 completed by ENSR Consulting and Engineering. Requested that downgradient stream sediment be sampled.

Laura Noland

6/28/1993

Interim Removal Action Approved

Received PCB sample results which indicate up to 1,000 ppm PCB found near the doorway of the Equipment Building. ADEC informed Air Force that either an emergency removal and/or warning signs would need to be pursued.

Laura Noland

6/30/1993

Update or Other Action

(Old R:Base Action Code = SI - Site Investigation). Received "Final Site Inspection of the Bear Creek radio Relay station at Tanana, Alaska dated June 1993. Inspection conducted by ENSR for Air Force.

Laura Noland

7/1/1993

Update or Other Action

(Old R:Base Action Code = SI - Site Investigation). Received Final Site Inspection of the Bear Creek Radio Relay Station at Tanana, Alaska.

Laura Noland

8/13/1993

Update or Other Action

(Old R:Base Action Code = SI - Site Investigation). Conducted review of Final Site Inspection report.

Laura Noland

11/30/1993

Update or Other Action

(Old R:Base Action Code = NFA - No Further Action Required (CERCLA)). ADEC did not close site, but EPA determined facility is No Further Action based on HRS ranking.

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

3/28/1996

Meeting or Teleconference Held

ADEC staff Kris M., Laura N., Tamar S. met with Jill Chounard regarding demolition/ onsite landfill for disposal of demolition debris at site. There is one identified PCB hot spot for which contaminated debris and soil will be excluded from landfill. After demolition/landfilling, contaminated sites issues will be addressed.

Tamar Stephens

1/23/1997

Site Added to Database

Multiple contaminants. Site added by Shannon and Wilson. See also Reckey 198931X902510.

S&W

3/24/1997

Update or Other Action

Site updated by Shannon and Wilson, based on the Air Force Relative Risk Evaluation Worksheets dated 9/11/95. Individual IRP sites assigned separate Reckey numbers. See Comments field on the Problem/Comments Tab for a list of Reckey numbers.

S&W

6/1/1998

Site Characterization Workplan Approved

RI performed at facility.

Patrice Buck

12/1/1998

Update or Other Action

RI Report Draft submitted to ADEC.

Patrice Buck

1/19/1999

Update or Other Action

Revised Draft Conceptual Site and Risk Assessment Work Plan reviewed.

Patrice Buck

11/1/1999

Update or Other Action

Received draft Proposed Plan sent letter 12/10/99.

Patrice Buck

12/1/1999

Risk Assessment Report Approved

Staff review RI report and approved RA.

Patrice Buck

12/20/1999

Update or Other Action

Response to Draft Proposed Plan for the Bear Creek RRS. Action entered by Sarah Riddle.

Patrice Buck

3/2/2001

Update or Other Action

Response to Draft Proposed Plan for the Bear Creek RRS, Version 2. Action entered by Sarah Riddle.

Patrice Buck

2/26/2002

Update or Other Action

Response to Draft Proposed Plan for the Bear Creek RRS, Version 3. Action entered by Sarah Riddle.

Patrice Buck

3/11/2002

Update or Other Action

Response to Draft Proposed Plan for the Bear Creek RRS, Version 4. Action entered by Sarah Riddle.

Patrice Buck

3/26/2002

Proposed Plan

Staff approved a Proposed Plan for four sites at top camp (LF01, SS02, SS03, and SS04). Public meeting is schedule for April 22, 2002 in Tanana. It has been determined that there is no complete migration to groundwater pathway at the top camp. Contamination levels sampled in the 1998 RI did not exceed the Method 2 inhalation and ingestion levels with the exception of 1.2 ppm PCB level in LF02. The Air Force is proposing to re-grade and re-seed the area to preserve the cap and conduct LTM at LF01.

Patrice Buck

3/28/2002

Update or Other Action

Response to Draft Community Relations Plan for the Bear Creek RRS. Approval expected after comments addressed. Action entered by Sarah Riddle.

Patrice Buck

9/11/2002

Meeting or Teleconference Held

Staff attended a Tribal Government to Government meeting in Tanana. Present at the meeting were Alaska Area Native Health Service (AANHS), Alaska Native Tribal Health Consortium (ANTHC), Agency for Toxic Substances and Disease Registry (ATSDR), the Air Force 611th, FAA, EPA, Corps of Engineers, and tribal members and their consultants. In June 2002, some of these agencies met with the Tanana Tribal Council (not including DEC) to discuss an Interagency Tribal Coordinated Environment Agreement. The document had been revised from the first meeting and the Tribe requested comments on this draft by 9/30/02. A teleconference is schedule for 10/18/02 to discuss revisions. A goal of signing the document by12/1/02 was set. The purpose of the agreement is for various agencies to work together in identifying sources, to develop environmental profiles and assessment reports, and identify multi-phase corrective actions. Staff is reviewing four decision documents and public comments to the proposed plan.

Patrice Buck

10/4/2002

Update or Other Action

Review of draft Decision Document received August 28, 2002. Comments provided. Action entered by Sarah Riddle

Patrice Buck

1/29/2003

Update or Other Action

DEC sent e-mail with comment on Cumulative Risk Tech Memo. Error included including arsenic (since it is background) and use industrial levels. Request the memo be resubmitted.

Patrice Buck

5/21/2003

Update or Other Action

Recieved revised DDs. They are lacking revision suggested in previous comments.

Patrice Buck

4/28/2005

Meeting or Teleconference Held

DEC attended a meeting with the Air Force and their contractors discussing a work plan for 2005 site characterization. This field work will be for the few remaining Installation Restoration Program (IRP) sites that require further action. The Air Force is also hoping to create Decision Documents for other IRP sites at the facility that were drafted previously, but never completed. These IRP sites are presumed to require no further remedial action. DEC agreed that the scope of work for 2005 was appropriate, and will review historical work to ensure that the Air Force’s assessment of which sites require further remedial action is correct.

Colin Craven

7/13/2005

GIS Position Updated

Location of former radio relay facility corrected by USGS map interpolation.

Colin Craven

7/22/2005

Update or Other Action

DEC participated a site visit with the Air Force and their contractors. The main purpose of the visit was to inspect three new IRP sites where additional site characterization will occur this August, and to meet with the Tanana Tribal Council to present the plans for the site characterization. The cap and revegetation at the site demolition landfill on the hilltop of the former relay station appeared to be in good condition.

Colin Craven

7/28/2005

Site Characterization Workplan Approved

Meetings with the Air Force and its contractors resolved all comments and questions on the draft work plan. Field work should begin in early August 2005.

Colin Craven

3/1/2007

Exposure Tracking Model Ranking

Initial ranking.

Lisa Maserjian

11/15/2007

Update or Other Action

A Draft ROD was submitted to the Department for the Yukon River POL, Vehicle Maintenance Shop, Fuel Storage Area, Equipment Building, and Barrel Storage Area, DEC has reviewed the draft ROD and will provide comments. The 1998 Vehicle Maintenance Shop Soil sampling results are summarized in the ROD. DRO was detected up to 10,000 mg/kg, GRO up to 910 mg/Kg. VOCs, SVOCs, Pesticides, and PCBs were either below MTG cleanup levels, or below 1/10th of the Inhalation and Ingestion cleanup levels.

Kim DeRuyter

12/10/2007

Update or Other Action

A preliminary conceptual site model for the Bear Creek RRS can be found in section 7 of the September 1999 Final Remedial Investigation Report.

Kim DeRuyter

9/16/2008

Update or Other Action

DEC sent comments to the Draft/Final ROD. The ROD included SS002 the Vehicle Maintenance Shop, SS003, the Fuel Storage Area, SS004 the Equipment Building, SS006 the Barrel Storage Area, and SS008 the POL Site by the yukon River. Residual soil contamination at these sites is below risk based levels. The completion of the Draft/Final ROD was delayed while DEC revised the Site Closure Proceedures and Policy Guidance. The remedial action objective for the sites is no further action. The site status will change to cleanup complete with no institutional controls upon signature of the Final ROD.

Kim DeRuyter

2/20/2009

Update or Other Action

Met with Steve Hunt the new Air Force PM in the Fairbanks office on 2/19/09 to discuss the Proposed Plans for the Borrow Pit, LFO1, and Equipment building sites and DECs comments to the Draft Final (no further action) record of decision. Sent a letter outlining DECs final comments on the ROD on 2/20/09.

Kim DeRuyter

7/30/2009

Cleanup Complete Determination Issued

John Halverson signed a no further action Record of Decision for Four sites at the Bear Creek Radio Relay Station. The ROD included the Vehicle Maintenance Shop. PCB soils were removed from the site in 1985. Petroleum contamination below health based cleanup levels remains in subsurface soil at the site. The site has been capped and is revegetating with grass and small willows.

Kim DeRuyter

10/14/2013

Update or Other Action

On Sept 24, 2013, ADEC concurred with a workplan prepared by Jacobs Eng, for the AF, to survey the boundaries of SS002, SS003 and SS008 for use in documenting areas with residual petroleum in soil to aid in proper future soil managment. The plan also includes provisions for inspecting and verifying proper closure of an abandoned underground fuel pipeline between the former Equipment Building and the Fuel Storage Area.

John Halverson

12/20/2013

Update or Other Action

Received Draft Survey Report: Site Closure Documentation for Sites SS002, SS003, and SS008, Bear Creek RRS, Alaska (CDRL A001E)

Meredith Savage

2/4/2014

Update or Other Action

Reviewed and approved as final- Draft Survey Report: Site Closure Documentation for Sites SS002, SS003, and SS008, Bear Creek Radio Realy Station (RRS), Alaska.

Meredith Savage

2/21/2014

Update or Other Action

Final report received- Survey Report: Site Closure Documentation for Sites SS002, SS003, and SS008, Bear Creek Radio Realy Station (RRS), Alaska.

Meredith Savage

12/4/2014

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 71772 Vehicle Maint Shop.

Meredith Savage

12/5/2014

Update or Other Action

On July 30, 2009, ADEC signed the no further action ROD for four sites at the Bear Creek Radio Relay Station, which included the former Vehicle Maintenance Shop, SS002 site. However, the ROD included a requirement for a survey of site boundaries, delineation of residual contamination, and location and inspection of a buried pipeline at site SS003. This work was carried out in September 2013 and the results were presented in two reports (see entry for 2/21/2014). As of this entry, ADEC has updated the Exposure Tracking Model data base and drafted a formal closure letter for the sites.

Meredith Savage

12/12/2014

Update or Other Action

ADEC Contaminated Sites Program has completed a review of environmental records associated with the Bear Creek Radio Relay Station (RRS) sites SS002, SS003, and SS008. Based on this review we are issuing an updated Cleanup Complete determination for these named sites. The documentation of residual contamination remaining at these sites as stipulated in the June 1, 2009 Record of Decision (ROD) titled Final Record of Decision for Vehicle Maintenance Shop (SS002, Fuel Storage Area (SS003, Barrel Storage Area (SS006), POL Site by Yukon River (SS008) Bear Creek Radio Relay Station, Alaska, has been completed. After receiving the Site Closure Documentation report for Bear Creek Sites SS002, SS003, and SS008, ADEC used its Exposure Tracking Model (ETM) to evaluate risk of exposure to the remaining contaminants (DRO) for each of the three sites. Exposure pathways are the conduits by which contamination may reach human or ecological receptors. The ETM rankings for sites SS002, SS003, and SS008 show the pathways as either De-Minimis Exposure (exposure is negligible) or Pathway Incomplete (no direct exposure pathway). ADEC has determined that there is no unacceptable risk to human health or the environment at Bear Creek RRS sites SS002, SS003, and SS008, and these sites have been granted an updated Cleanup Complete determination.

Meredith Savage

9/29/2023

CERCLA PA

On this date, DEC reviewed the Draft Preliminary Assessment Report for Aqueous Film-Forming Foam (AFFF) areas, Bear Creek Radio Relay Station, Alaska. No AFFF sources (fire training or non-fire training) areas were identified.

Cascade Galasso-Irish

Contaminant Information

Name	Level Description	Media	Comments
DRO	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil	Contaminated soil is capped and revegetated.

Name

Level Description

Media

Comments

DRO

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

Soil

Contaminated soil is capped and revegetated.

Control Type

Type	Details
No ICs Required

Type

Details

No ICs Required

Requirements

Description	Details
Advance approval required to transport soil or groundwater off-site.

Description

Details

Advance approval required to transport soil or groundwater off-site.

Record of Decision for Four Sites at the Bear Creek RRS

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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Alaska Department of Environmental Conservation

Site Report: Bear Creek RRS Vehicle Maint Shop SS002

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Record of Decision for Four Sites at the Bear Creek RRS

Missing Location Data

State of Alaska Department of Environmental Conservation