| 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 |
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 |
| 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 |
| 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 |
| 1/29/2008 |
Meeting or Teleconference Held |
PM and Colin Craven met with the Air Force primarily to discuss the proposed remedial action at the Barrow Pit site. The Air Force is also planning to draft a Proposed Plan and, after considering public input will draft a ROD for the Solid Waste Disposal Site (LF01). Early documents in the file suggest that PCB contaminated soil (<50 mg/kg) may have been buried in this landfill, or just south of the landfill in the early 1980s. A records review conducted by the Air Force, and numerous sampling events have not produced evidence to support this claim. PCBs ranged from nondetect to 4.9 mg/kg in 1992, and from non-detect to 1.2 mg/kg in 1999. The site has been capped, and regrowth is occurring. |
Kim DeRuyter |
| 5/12/2008 |
Meeting or Teleconference Held |
Met with the Air Force PM and Paug-Vik consultants in Tanana to attend a site visit at the Bear Creek RRS. In general the area is in good shape, the old unpermitted landfill, LFO1 was well capped and willow nearly 5 feet tall is covering the entire area. The cap is mounded and precipitation and spring runoff is directed around the periphery. Large berms of soil keep motorized traffic off of LF01, and block access to the permitted landfill. Water from melting snow was pooled over an area on or near (?) the permitted landfill. |
Kim DeRuyter |
| 8/22/2008 |
Proposed Plan |
Received the Draft Proposed Plan for the LF001 site. The proposed remedial alternative is Institutional Controls with periodic reporting of site conditions. The Air Force is willing to document the site conditions - location and remaining contamination with the State Recorders Office, but they have not discussed maintenance of the ICs with the Tozitna Native Corportation, Tozitna is the current landowner. Comments to the draft document were sent 9/29/09. |
Kim DeRuyter |
| 8/19/2009 |
Site Visit |
Conducted a site visit with the Village Tribal Council Environmental Specialist and the Air Force, then met with the Mayor and members of the Regional Lands commitee to discuss Institutional controls required for the landfill. |
Kim DeRuyter |
| 12/6/2009 |
Meeting or Teleconference Held |
Steve Hunt Air Force Remedial Project Manager met with the Board of Directors of Tozitna Limited to discuss the Proposed Plans for LF001, the Equipment Building, and the Borrow Pit site. The plans are to implement institutional controls to limit exposure to PCB soil with concentrations below 10 mg/kg with at the Equipment Building, implement institutional controls to restrict excavation or developement at the landfill, and conduct further remedial action at the Borrow Pit site in 2010. The Board approved the proposed plan and a draft copy of the meeting minutes was submitted to ADEC. Staff requested a copy of the final signed meeting minutes. |
Kim DeRuyter |
| 12/6/2009 |
Meeting or Teleconference Held |
Steve Hunt Air Force Remedial Project Manager met with the Board of Directors of Tozitna Limited to discuss the Proposed Plans for LF001, the Equipment Building, and the Borrow Pit site. The plans are to implement institutional controls to limit exposure to PCB soil with concentrations below 10 mg/kg with at the Equipment Building, implement institutional controls to restrict excavation or developement at the landfill, and conduct further remedial action at the Borrow Pit site in 2010. The Board approved the proposed plan and a draft copy of the meeting minutes was submitted to ADEC. Staff requested a copy of the final signed meeting minutes. |
Kim DeRuyter |
| 3/17/2010 |
Proposed Plan |
A Feasibility Study and Proposed Plan were received from the Air Force. The Air Force intends to implement Institutional Controls which will document the location of the landfill and potential presence of hazardous waste at this site, and prohibit excavation or movement of soil from the landfill. Maintenance of the Institutional Controls will ultimately transfer to the landowner who will need to conduct periodic inspections and reporting of site conditions to the Department. |
Kim DeRuyter |
| 5/25/2010 |
Meeting or Teleconference Held |
DEC attended a public meeting facilitated by the USAF in Tanana. Approximately 17 people from the community were present. The purpose of the meeting was to introduce the community to project proposals for each of the LF01 and SS004 sites. The preferred alternative presented was to maintain Institutional Controls and monitoring of the soil cap at the landfill. Community representatives suggested strong support for contaminated soils (with residual PCB's under 10mg/kg) to be removed from the landfill site and sent away while the rest of the non-hazardous waste be transferred to the city landfill. DEC commented on regulations regarding disposal of PCB contaminated soil. USAF said that following the public comment period, ending June 12, they will draft a ROD with consideration to community concerns.
|
Meghan Dooley |
| 5/25/2010 |
Site Visit |
DEC participated in a site visit with USAF representatives and their contractors. LF01 looked to be in good condition with high density of vegetation. Drainage ditches appear to be successful in diverting water and preventing erosion of the soil cap.
|
Meghan Dooley |
| 2/15/2011 |
Document, Report, or Work plan Review - other |
ADEC received the draft ROD for LF001 on January 11, 2011 and send comments on February 15, 2011. The ROD recommends Alternative 3: Excavation along with cap maintenance and institutional controls for the remedy. PCBs at concentrations of 4.9 were observed at the site. |
Meghan Dooley |
| 4/13/2011 |
Document, Report, or Work plan Review - other |
The draft final ROD was reviewed and comments sent. ADEC requested minor changes, however required the entity implementing Institutional Controls at the site be clearly defined for the ROD to be approved. |
Meghan Dooley |
| 6/20/2011 |
CERCLA RI Plan Approved |
DEC received the proposed remedial investigation / removal action on April 7, 2011 and sent comments on April 21 and June 12. Comments were responded to on May 31 and June 16. DEC determined the comment responses to be adequate and sent an approval letter for the work plan on June 21, 2011. The Air Force plans to remove PCB contaminated soil to 1ppm. |
Meghan Dooley |
| 7/26/2011 |
CERCLA ROD Approved |
The Final Record of Decision for the LF001 Landfill No. 1 Site was approved and signed. The ROD calls for excavation of PCB contaminated soil at concentrations greater than 1 part per million (ppm). Institutional Controls (IC) will be established and maintained by the USAF and include the following: documentation of the site as an unpermitted landfill, delineation of the boundary for institutional controls, establishment and documentation of the ICs in the district recorders office, cap maintenance, excavation notification, and periodic inspections, monitoring and reporting of the ICs. |
Meghan Dooley |
| 3/19/2012 |
CERCLA Remedial Action Completion Report |
The Final Bear Creek Remedial Investigation/Removal Action Report was received. |
Meghan Dooley |
| 5/21/2012 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 78150 Landfill LF01. |
Meghan Dooley |
| 11/21/2013 |
Update or Other Action |
ADEC reviewed and commented on the Technical Memorandum: Implementation of Institutional Controls at the Former Bear Creek RRS (TVMG Trash Dump and LF001). Although analytical results from samples at both sites are below ADEC Method Two cleanup levels, both sites have the potential for buried wastes and therefore are subject to Institutional Controls. The boundaries of both sites were surveyed and three warning signs were posted at each site. ADEC asked for clarification on ICs established for the sites and that the Deed Notice be sent to ADEC for review prior to its submittal to the DNR Recorder's Office. |
Meredith Savage |
| 12/10/2013 |
Update or Other Action |
ADEC approved response to comments on the Technical Memorandum and requested they be incorporated into a final version. |
Meredith Savage |
| 12/26/2013 |
Document, Report, or Work plan Review - other |
Received Final Revision 2 of 2011 Bear Creek RRS Interim Remedial Investigation/Removal Action Report for Various Sites.
Received Implementation of Institutional Controls at the Former Bear Creek Radio Relay Station, TVMG Trash Dump and LF001, Final, December 2013. |
Meredith Savage |
| 12/27/2013 |
Institutional Control Update |
ADEC issues approval of IC report- Implementation of Institutional Controls at the Former Bear Creek RRS, TVMG Trash Dump and LF001, Final, December 2013. |
Meredith Savage |
| 12/27/2013 |
Update or Other Action |
ADEC issues approval of 2011 Bear Creek RRS Interim Remedial Investigation/Removal Action Report for Various Sites, Final, Revision 2, December 2013. (Contractor had inadvertently overlooked submission of final report after inital ADEC comments.) |
Meredith Savage |
| 8/11/2015 |
Update or Other Action |
Transferred to PM Garroutte. Action items this FY are to contact USAF to follow up to removal action, establish IC record, and to establish/review requirements in IC Management Plan for this site. |
Fred Vreeman |
| 7/11/2016 |
Document, Report, or Work plan Review - other |
DEC completed a review of the Bear Creek RRS Five Year review. The Air Force has indicated that the document is in final print. |
Monte Garroutte |
| 6/28/2021 |
Document, Report, or Work plan Review - other |
DEC received the Five Year Review for the Bear Creek RRS Landfill site. The report evaluated the performance of the institutional controls at this site and determined they are still functioning properly and are protective of human health and the environment. This is the second five year review for this site. |
Kelly Walker |
| 10/6/2021 |
Document, Report, or Work plan Review - other |
Review completed of Bear Creek RRS LF001 Second Five-Year Review and 2020 Remedial Institutional Control/Land Use Control Report. Document approved. This document reviewed the institutional controls in place at site LF001 to determine if they are still protective of human health and the environment. USAF plans to draft an environmental covenant for this land to ensure no excavation takes place in the location of the former landfill, where PCBs remain in soils below 1 mg/kg. The third notification sign is planned to be replaced during the next inspection. |
Kelly Walker |
| 12/15/2021 |
Update or Other Action |
Second Five Year Review document amended to reflect current landowner status. Document has been approved. |
Kelly Walker |
| 5/5/2022 |
Cleanup Complete Determination Issued |
|
Shonda Oderkirk |
| 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 |
