| Action Date |
Action |
Description |
DEC Staff |
| 12/5/1973 |
Update or Other Action |
Letter from RCA Service Company, White Alice Project To Thomas P. Gargetta, Administrative Contracting Officer, White Alice Communications System. Subj: Contract AF 30(635) 35559. "Request for disposition instructions on Carbon Tetrachloride Fire Extinguishers". Subject extinguishers are no longer authorized for use as they are considered dangerous to personnel safety and should be disposed of in the most expedient and economical Manner. The only value of these fire extinguishers is there material content and in most cases the cost of returning them to Anchorage would exceed their worth. It is requested that we be authorized to dispose of these extinguishers on site and turn in to Redistribution and Marketing those (that are) in warehouse stock. Signed: R.E. Ryan Manager. Project Administration.
Locations: Aniak (22 1 qt. size), Anvil Mountain (17 1 1/2 qt. size), Bear Creek (1 1qt. & 1 1 1/2 qt. size), Bi8 Mountain (7 1 qt. & 7 1 1/2 qt. size), Boswell Bay, (5 1 qt. & 7 1 1/2 qt. size), Fort Yukon (2 1 qt. size), Kalakaket Creek (9 1 qt. & 12 1 1/2 qt. size), King Salmon (5 2 qt. size), Newenham, (3 1 1/2 qt. size), Soldotna (4 1 qt. size), Tatalina (5 1 1/2 qt. & 1 2 qt size), Yakataga (1 1 1/2 qt. size). See page 519 of 1970 Logistics of WACS (1970). |
Gretchen Pikul |
| 6/13/1988 |
Update or Other Action |
Hazardous Materials Technical Center Preliminary Assessment identified small quantities of hazardous materials at site. Several lead-acid batteries were observed ruptured from being frozen, asbestos tiling in various stages of decomposition due to reaction from spilled chemicals were found on building floors. A mound 4' above surrounding landscape may be a landfill site or burial site for construction debris. No organic vapors were detected with PID and no hazardous wastes were reported to have been disposed of in this area. |
Former Staff |
| 5/4/1989 |
Preliminary Assessment Approved |
Preliminary Assessment (dated April 1989) prepared for HQ AAC/DEPV and by Hazardous Materials Technical Center; received by ADEC on May 4, 1989. |
Former Staff |
| 2/5/1997 |
Update or Other Action |
Final Environmental Assessment Big Mountain Radio Relay Station Demolition (dated October 1996) received on February 5, 1997. |
Gretchen Pikul |
| 10/29/1997 |
Update or Other Action |
Final Management Action Plan (dated October 24, 1997). |
Gretchen Pikul |
| 1/9/1998 |
Site Added to Database |
Site added by staff. |
Gretchen Pikul |
| 6/15/1998 |
Update or Other Action |
ADEC participated in a site visit. |
Gretchen Pikul |
| 7/15/1998 |
Update or Other Action |
Community Relations Plan (dated July 1998). |
Gretchen Pikul |
| 7/20/1998 |
Meeting or Teleconference Held |
Preliminary Draft: Human Health and Ecological Risk Assessment Work Plan comment resolution meeting and workplans were not approved. |
Gretchen Pikul |
| 7/24/1998 |
Site Characterization Workplan Approved |
Remedial Investigation / Feasibility Study Workplans (draft version dated June 1998, final version dated August 1998 and received on October 4, 1999). |
Gretchen Pikul |
| 8/6/1998 |
Meeting or Teleconference Held |
ADEC participated in public meetings regarding the RI/FS workplan in Iliamna/New Halen on August 6 and in Kokhanok on August 7. |
Gretchen Pikul |
| 5/3/1999 |
Update or Other Action |
ADEC review and comment on 1st draft version of RI/FS report - report not complete, therefore ADEC review not complete. |
Gretchen Pikul |
| 5/6/1999 |
Update or Other Action |
Site Characterization Technical Memorandum (dated December 1998); received by ADEC on May 6, 1999. |
Gretchen Pikul |
| 10/1/1999 |
Update or Other Action |
ADEC review and calls on 2nd draft RI/FS version. A complete ADEC review and comment letter cannot be produced until necessary information and tables (requested in May 1999) are forwarded. |
Gretchen Pikul |
| 10/26/1999 |
Meeting or Teleconference Held |
ADEC participated in a meeting regarding 2nd draft RI/FS version. A complete ADEC review and comment letter cannot be produced until necessary information and tables (requested in May 1999) are forwarded. December 20, 1999 ADEC received some of the requested data from the October meeting. |
Gretchen Pikul |
| 11/10/1999 |
Update or Other Action |
ADEC review and comment on Risk Assessment portions of RI/FS (dated June 1999); please note that ADEC did not approve the risk assessment workplan and the decision during the comment resolution meeting was to set aside the risk assessment until it was determined whether or not one would be necessary, based on the future RI/FS data. These risk assessment portions of the RI/FS were also not approved by ADEC; risk assessment fundamentals were missing in the report. |
Gretchen Pikul |
| 3/8/2000 |
Meeting or Teleconference Held |
Comment resolution meeting for Risk Assessment portions of RI/FS on 3-8-00 - decision to consider report a risk evaluation instead of a risk assessment - Air Force not ready to address ADEC comment letter dated 11-99, but discussed general direction - human health risk evaluation needs extensive reworking. |
Gretchen Pikul |
| 4/7/2000 |
Update or Other Action |
ADEC comment letter on 2nd version of draft RI/FS. |
Gretchen Pikul |
| 6/7/2000 |
Update or Other Action |
ADEC sent out community update letter. |
Gretchen Pikul |
| 7/20/2000 |
Update or Other Action |
Hazardous Substances Investigation at Big Mountain White Alice Communication Systems Site (dated August 1983) prepared for the Village of Levelock and by DOWL Engineers; received by ADEC on July 20, 2000. |
Gretchen Pikul |
| 7/20/2000 |
Update or Other Action |
Draft Preliminary Assessment Report (dated February 12, 1993, no final submitted) prepared for USAF 11 CEOS/DEVR and by Science Applications International Corporation; received by ADEC on July 20, 2000. |
Gretchen Pikul |
| 7/20/2000 |
Update or Other Action |
Proposed Big Mountain Communication Relay Station - Final Environmental Baseline Survey Report (dated September 1995) prepared for Bristol Bay Housing Authority and by DOWL Engineers; received by ADEC on July 20, 2000. |
Gretchen Pikul |
| 8/28/2000 |
Meeting or Teleconference Held |
ADEC participated in 2 meetings (August 25 and 28) with Air Force, COE and their consultant for update and discussion of project general direction. |
Gretchen Pikul |
| 8/29/2000 |
Meeting or Teleconference Held |
ADEC participated in public meetings in Iliamna. |
Gretchen Pikul |
| 4/15/2001 |
Update or Other Action |
Final RI/FS report (dated Feburary 2001) received February 21, 2001; ADEC comment letter dated April 15, 2001 - still outstanding issues not addressed in this 3rd version; contract end, this version considered final and ADEC comment letter listing outstanding issues is attached. |
Gretchen Pikul |
| 10/10/2001 |
Update or Other Action |
Year 2000 Clean Sweep Environmental Survey Report (dated August 20, 2001) received on October 10, 2001. |
Gretchen Pikul |
| 12/4/2001 |
Update or Other Action |
July 31, 2001 meeting with Air Force to discuss general project direction and upcoming Proposed Plans and Decision Documents; November 21, 2001 (electronic copy) and November 29, 2001 (hard copy) received Preliminary Draft Proposed Plan; comment resolution meeting on December 4, 2001; draft final version anticipated by end of December. |
Gretchen Pikul |
| 1/17/2002 |
Site Ranked Using the AHRM |
Changed Observed Environmental Impacts value from 3 to 0 and changed Surface Water Environments value from 2 to 3. |
Former Staff |
| 1/24/2002 |
Proposed Plan |
Proposed Plan for 6 sites: Interim Remedial Actions for ST001, SS002, LF005, and SS014; Site Closure for SS013 and SS015. Draft Preliminary Proposed Plan received on November 29, 2001; ADEC comments dated December 3, 2001; comment resolution meeting December 4, 2001; Draft final received January 10, 2002; ADEC internal briefing and comment resolution meeting on January 11, 2002; Final Proposed Plan dated January and received January 24, 2002; public comment period January 21 - February 22, 2002, but extended to April 1, 2002; public meetings held in Iliamna on January 30, 2002 and in Kokhanok on February 19, 2002. |
Gretchen Pikul |
| 12/3/2002 |
Record of Decision |
The Final Record of Decision was signed by ADEC on December 3, 2002. The migration to groundwater cleanup level for soil was applied. The interim remedy for ST001, SS002, and SS014 is excavation and thermal treatment of the DRO-contaminated soil. Further investigation of groundwater conditions and potential impacts to nearby wetlands will also be performed. The interim remedy for LF005 is a limited landfill cap. An ecological risk assessment and annual long-term monitoring of groundwater, surface water, and sediment will be performed at LF005 and ST001. A 5-year review will be conducted for all 4 interim remedial action sites. The Final Decision Documents for these interim remedial action sites will address the any remaining contamination discovered by the additional investigation activities. |
Gretchen Pikul |
| 5/12/2003 |
Meeting or Teleconference Held |
Meeting on draft newsletter and 2003 field work. |
Gretchen Pikul |
| 6/5/2003 |
Meeting or Teleconference Held |
ADEC participated in public meetings at Iliamna and Kokhanok, and a site visit. |
Gretchen Pikul |
| 6/12/2003 |
Update or Other Action |
The Big Mountain RRS Newsletter (draft received May 26, 2003; ADEC comments on May 27, 2003; final dated May 31, 2003 and received June 12, 2003). |
Gretchen Pikul |
| 7/2/2003 |
Meeting or Teleconference Held |
ADEC participated in meeting for 2003 work plan and 2004 scope of work; draft work plan is due July 15. |
Gretchen Pikul |
| 9/26/2003 |
Update or Other Action |
Work Plan Clean Sweep Demolition - Phase I (draft dated May 19, 2003; final dated August 27 and received September 26, 2003). |
Gretchen Pikul |
| 11/10/2003 |
Update or Other Action |
Interim Report Clean Sweep Demolition - Phase I; draft dated October 31, 2003 and received on November 5; ADEC approval letter dated November 10, 2003. |
Gretchen Pikul |
| 11/13/2003 |
Update or Other Action |
The Big Mountain RRS Newsletter (dated October 13, 2003) received on November 13, 2003. |
Gretchen Pikul |
| 11/13/2003 |
Meeting or Teleconference Held |
Meeting on 2003 field work and results: RI findings and data gaps; Feasibility Study and cleanup volumes; 2004 sampling to fill data gaps and refine cleanup; and POL remedial options. Remediation projects have been delayed until 2005 due to funding. |
Gretchen Pikul |
| 6/7/2004 |
Update or Other Action |
Clean Sweep Phase 2 work plan; draft dated May 7, 2004 and received on May 10, Air Force requested expedited review; ADEC sent comments via e-mail on May 21, 2004; ADEC received Air Force Comment Response on June 3, and sent approval letter on June 4; final dated June 2 and received on June 7. |
Gretchen Pikul |
| 6/24/2004 |
Update or Other Action |
2004 Remedial Investigation / Feasibility Study and Environmental Monitoring work plan; draft dated and received on June 14, expedited review requested by Air Force; ADEC comment letter dated June 24. |
Gretchen Pikul |
| 6/14/2005 |
Update or Other Action |
2005 Remedial Action Work Plan for Sites ST001, SS002, SS004, SS014, SS009, and SS010; draft dated and received May 25, 2005; ADEC comment letter dated June 9, 2004; Comment Response on June 13, 2005; ADEC approval letter issued and final dated June 14, 2005. |
Jeff Norberg |
| 11/10/2005 |
Update or Other Action |
Phase 2 Clean Sweep Demolition Report for Big Mountain RRS; draft dated January 2005 submitted December 2, 2004; ADEC approval letter dated March 14, 2005; Final dated March 11 received November 10, 2005. |
Jeff Norberg |
| 2/14/2006 |
Update or Other Action |
Remedial Investigation Report for Sites ST001, SS002, SS003, SS004, SS011, and LF005; draft RI dated April 15, 2005 received June 8; ADEC review on-hold pending submittal of Ecological Risk Assessment for Sites ST001 and LF005; Air Force submitted ERA dated August 12, 2005 received November 7, 2005; meeting with Air Force and contractor to discuss review of draft RI/FS and ERA on January 25, 2006; ADEC comment letter dated January 26; Comment Response on January 31; ADEC approval via email issued February 1; Final RI/FS report dated February 10, 2006 received February 14. |
Jeff Norberg |
| 7/14/2006 |
Update or Other Action |
Report - 2005 Remedial Action for Sites ST001, SS002, SS004, and SS014 (PCB assessment at Sites SS009 and SS010 was delayed and will be included within a separate document submitted at a later date); draft dated and received January 20, 2006; revisions to Section 4 submitted on May 8; ADEC comment letter dated June 14, 2006. |
Jeff Norberg |
| 12/20/2007 |
Site Characterization Report Approved |
Report- Revised Letter Report for Post-Treatment Confirmation Sampling of POL Stockpiles at Big Mounitain RRS has been reviewed by ADEC Staff and comments from the Draft have been incorporated. Report has been approved by ADEC. |
Jonathan Schick |
| 12/21/2007 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Jonathan Schick |
| 4/1/2008 |
Update or Other Action |
Staff submitted comments on the 2006-2007 Environmental Monitoring Report for sites LF005, ST002, and SS001. The Draft version of the Report was recieved on March 12, 2008. |
Jonathan Schick |
| 4/4/2008 |
Update or Other Action |
Staff issued a letter to the 611th CES approving the dispersal of stockpiled soils from sites ST001, SS002, and SS004 on the northern perimeter of the Big Mountain RRS Runway avoiding any wetlands, water bodies, or other environmentally sensetive areas. |
Jonathan Schick |
| 5/2/2008 |
Update or Other Action |
ADEC staff issued a letter commenting on the draft ROD for sites SS002, SS003, SS004, SS011, SS014, SS016, and SS017. No significant issues are contained within the comment letter asking for clarifications about the method of recording the proposed institutional controls. Also a question was raised about the amount of backfill was used to cover the open excavations at the sites. |
Jonathan Schick |
| 5/6/2008 |
Update or Other Action |
File number changed from CS77.08-1 to 2518.38.005. |
Nicole Hurt |
| 7/14/2008 |
Record of Decision |
Record of Decision signed granting conditional closuire for site SS002, 1,000 gallon fuel oil AST. Institutional Controls will be implemented because there is remaining residual contamination at the site. The Institutional Controls (ICs) include: Delineate the site boundaries, survey the boundaries, document the ICs in the USAF Real Property Records, and notify the ADEC prior to making any major changes to the ICs. These ICs will stay in effect until DRO levels in the soil reaches State of Alaska Cleanup levels protective of unrestricted use. |
Jonathan Schick |
| 7/15/2008 |
Site Visit |
ADEC staff conducted a site visit at the Big Mountain RRS and inspected all of the sites that have been documented at the Radio Relay Station(RRS). USAF staff and their contractores accompanied ADEC staff on the site visit. Community meetings were organized to talk to citizens in the surrounding communities about the environmntal restoration work that is on-going at the Big Mountain RRS. |
Jonathan Schick |
| 9/16/2010 |
Site Visit |
Contaminated Sites staff travelled to Big Mountain Radio Repeater Site via Navajo on Thursday Septermber 16 to look at the various contaminated sites and to perform a fieldwork oversight inspection. The contractors on-site demonstrated an understanding of the workplan and of the tasks that were being conducted at the site during the visit. These activities included collection of a Multi-Incrimental sample from a treatment stockpile at lower camp, completion of a newly installed groundwater monitoring well at LF005 and collection of step-out samples to delineate the extent of PCB impacts on the mountain top at SS010. The landfill caps appear to be in good condition with no observed cracking or carsting. However, the runway at lower camp is being used for unauthorized purposes (i.e. hunter staging area) and access controls should be revisited for this site. |
Jonathan Schick |
| 12/3/2010 |
Update or Other Action |
Contaminated Sites staff recieved a copy of the survey documents defining the boundaries of ERP sites SS002 and SS014 at Big Mountain. The survey of site boundaries was the last action required to achieve a cleanup complete with Institutional Controls. The Institutional Controls limit any subsurface site activities and installation of drinking water wells within the site boundaries. |
Jonathan Schick |
| 12/13/2010 |
Cleanup Complete Determination Issued |
Contaminated Sites staff issued a letter to the USAF granting a designation of cleanup complete with Institutional Controls for sites SS002 and SS014 at the Big Mountain Radio Repeater Site.
The documentation of the site boundaries with a professional survey was the last requirement to grant the Cleanup Complete with Institutional Controls Designation. The Record of Decision for these sites states that although the contamination at SS002 and SS014 does not pose an unacceptable potential risk to human health or the environment, soil is contaminated by petroleum hydrocarbons above State of Alaska cleanup levels protective of unrestricted use.
The Remedial Action Objectives for SS002 and SS014 include:
a) Document that petroleum hydrocarbons in surface and subsurface soil exceed levels protective of unrestricted use.
b) Restrict excavation and transportation of contaminated soil to prevent migration of contaminants.
The USAF will implement the Institutional Controls (ICs) by taking the following actions that have been completed:
• Delineate the boundaries of soil with DRO above Method Two cleanup levels at the sites.
• The boundaries of soil with DRO above Method Two cleanup levels will be surveyed for the State of Alaska and USAF Real Property Records.
• Document the ICs in USAF’s Real Property Records will contain a map indicating IC locations
• Notify ADEC prior to making any changes to the ICs. The 611th CES is the point of contact for the ICs.
• ICs will stay in effect until DRO reaches State of Alaska cleanup levels protective of unrestricted use (Method Two for soil).
|
Jonathan Schick |
| 12/13/2010 |
Institutional Control Record Established |
Institutional Controls established and entered into the database. |
Jonathan Schick |
| 4/4/2011 |
Update or Other Action |
Contaminated Sites Staff recieved a Draft copy of the Supplemental Field Investigation Report that addressed samples collected during the 2010 field event at LF005, ST001, SS010a and SS010b. The work also included collecting survey data to document the boudaries of sites SS002 and SS014 for the purpose of the Institutional Controls for the site. The main objective of the work was to delineate the PCB impacted soils at SS010a and SS010b for the proposed excavation work scheduled to be conducted in 2011. |
Jonathan Schick |
| 4/8/2011 |
Update or Other Action |
Contaminated Sites Staff submitted a letter to the USAF 611th CES project manager with comments on the Draft Supplemental Field Investitgation Report for several sites at Big Mountain. ADEC's main concerns were regarding the field screening samples at the upper camp sites where the field screening results were biased low. This low biascould lead to an underestimation of the amount of PCB impacted soils will need to be removed from the site. The other issue with this report is that it detailed only a portion of the work at LF005 and ST001 which was investigated during the same field mobilization but reported on under a separate Long-Term Monitoring report. |
Jonathan Schick |
| 12/12/2011 |
Update or Other Action |
Survey data has been submitted to ADEC delineating the area that has restrictions on subsurface activity. |
Jonathan Schick |
| 11/5/2015 |
Document, Report, or Work plan Review - other |
The ADEC Contaminated Site Program approved the 2015 Big Mountain Long Radio Relay Station, Environmental Monitoring Work Plan Addendum |
Jessica Morris |
| 3/15/2016 |
CERCLA ROD Periodic Review |
The ADEC Contaminated Site Program approved the 2015 Big Mountain Long Radio Relay Station Five-Year Review Report for Sites SS002, LF002, and ST001. |
Jessica Morris |
| 8/15/2016 |
Document, Report, or Work plan Review - other |
The ADEC Contaminated Site Program approved the 2016 Big Mountain Long Radio Relay Station, Environmental Monitoring Work Plan Addendum. |
Jessica Morris |
| 3/28/2017 |
Update or Other Action |
Former file number 2518.38.005 consolidated with 2518.38.001. |
Mitzi Read |
| 9/28/2017 |
Institutional Control Update |
ADEC received Air Force Statewide Land Use Control Management Plan dated Sept. 2017. After review, site SS002 was found left out in annual Long term monitoring event. The site ROD was approved in 2008 and officially closed with ICs in 2010. Although it was too late to change the scope of work for 2017 field season since contract has been released, Air Force agreed to add IC status update in 2018 LTM workplan and conduct annual inspection in the following years until closure (next evaluation year is 2020). |
Linda (Qi) Liu |
| 3/29/2019 |
Document, Report, or Work plan Review - other |
ADEC received the Draft 2018 Report, Environmental Monitoring of Sites LF005, ST001, and SS002, dated March 2019. Surface water and sediment samples were collected from LF005; all samples were below the applicable cleanup levels. Sediment samples were collected at ST001 and sampled for PCBs; all three samples detected PCBs, with one sample exceeding the NOAA SQuiRTs PEL. A land use control inspection was conducted at SS002; the area appeared to be in good condition, with no contaminant impact or signs of disturbance. ADEC sent comments on the draft report to the Air Force in a letter dated April 29, 2019. |
Sammi Castle |
| 6/19/2019 |
Document, Report, or Work plan Review - other |
ADEC approved the Final 2018 Report, Environmental Monitoring of Sites LF005, ST001, and SS002, dated May 2019. |
Sammi Castle |
| 7/31/2019 |
Document, Report, or Work plan Review - other |
ADEC received the 2019 Environmental Monitoring and Debris Removal Work Plan Addendum, dated July 2019. Proposed work includes the sampling of surface water and sediment at two historical locations at LF005, land use control inspections at LF005, LF010, SS002, and ST001, and debris removal activities at 42 debris sites. Comments on the draft addendum submitted to the Air Force via email on August 2, 2019. |
Sammi Castle |
| 8/9/2019 |
Document, Report, or Work plan Review - other |
ADEC approved the final 2019 Environmental Monitoring and Debris Removal Work Plan Addendum, dated August 6, 2019, in a letter to the Air Force on this date. |
Sammi Castle |
| 5/10/2021 |
Document, Report, or Work plan Review - other |
5/10/2021 ADEC approved the Second CERCLA Five-Year Review for Sites LF005, ST001, Second Periodic Review for Site SS002, and First Five-Year Review for Site LF010 (Former SS014), Former Big Mountain Radio Relay Station, Alaska, dated January 2021. The document evaluates the implementation and performance of site remedies to determine if the remedies are and will continue to be protective of human health and the environment. |
Daniela Fawcett |
| 8/12/2022 |
Document, Report, or Work plan Review - other |
ADEC approved the Second Five-Year Review For CERCLA Sites and Second Periodic Review For Non-CERCLA Sites Former Big Mountain Radio Relay Station, Alaska, dated June 2022. This report provides the United States Air Force’s (USAF’s) Five-Year Review (FYR) and Periodic Review for four Environmental Restoration Program (ERP) sites at the Former Big Mountain Radio Relay Station (RRS) near Igiuglg, Iliamna Lake, Alaska. The document focused on the landfill and associated monofill (site LF005), the 42,000-gallon fuel oil aboveground storage tank (AST) (site ST001). The periodic review included the 1000-gallon fuel oil AST (site SS002) and the former dual fuel oil AST system (Site SS014). For LF005 and the associated monofill, the institutional controls (ICs) will remain in place as long as the disposal areas remain at Big Mountain RRS. The ICs will remain in place at ST001 until contaminant concentrations are documented to be below the cleanup levels listed in the Record of Decision (ROD). For both SS002 and SS014 the requirements of the ROD are being fulfilled in order to maintain protectiveness. ADEC concurs with the protectiveness determination. However, soil sampling has not occurred at SS014 to accurately delineate boundaries of soil with diesel range organics (DRO) concentrations greater than ADEC Method 2 cleanup levels. |
Ginna Quesada |
| 7/26/2023 |
Long Term Monitoring Workplan or Report Review |
DEC completed a review and provided comments for the Draft Workplan, Environmental Monitoring and Land Use Control Inspections, LF005, ST001, SS002 AND SS014, Big Mountain Radio Relay Station, Alaska, dated July 2023. The Work Plan describes activities to be performed in support of the Environmental Monitoring program at four Environmental Restoration Program sites (LF005, ST001, SS014 and SS002) at the Big Mountain Radio Relay Station (RRS), Alaska.
|
Dennis Shepard |
| 9/27/2024 |
Document, Report, or Work plan Review - other |
DEC provided approval for the Big Mountain Radio Relay Station, 2024 Land Use Control (LUC) Inspections, Work Plan Addendum, Contract Number FA890324C0044, Big Mountain Radio Relay Station, Alaska, dated September 2024. The 2024 scope of work for Big Mountain RRS includes only LUC inspections at ST001, SS002, and inspections of landfill caps at sites LF005 and SS014. |
Sarah Bernhardt |
