| Action Date |
Action |
Description |
DEC Staff |
| 3/14/1986 |
Update or Other Action |
Environmental Assessment, Defense Environmental Restoration Account (dated March 14, 1986). |
Former Staff |
| 1/15/1987 |
Update or Other Action |
Defense Environmental Restoration Program (DERP) Inventory Project Report (January 1987). |
Former Staff |
| 7/13/1994 |
Preliminary Assessment Approved |
Preliminary Assessment (dated January 1994) prepared by CH2M Hill; received on July 13, 1994. |
Ray Burger |
| 2/8/1996 |
Update or Other Action |
Final Preliminary Assessment / Site Inspection (dated January 1996) prepared by EMCON; received February 8, 1996. |
Ray Burger |
| 2/23/1996 |
Update or Other Action |
Final Management Action Plan (MAP) dated February 1996; received February 23, 1996. |
Ray Burger |
| 12/29/1997 |
Update or Other Action |
Management Action Plan (draft dated August 1997; ADEC comment letter dated December 10, 1997; final report dated Decmber 29, 1997). |
Gretchen Pikul |
| 1/9/1998 |
Site Added to Database |
Site added by staff. |
Gretchen Pikul |
| 7/26/2005 |
Update or Other Action |
Preliminary Assessment/Site Investigation Quality Program Plan (Work Plans) for Driftwood Bay RRS (entire installation) and Duncan Canal RRS; draft dated March 2005, ADEC received on March 25; ADEC comment letter on April 29; comment resolution meeting on May 3; Air Force final PA/SI QPP dated June 2005 received on July 26. |
Jeff Norberg |
| 2/17/2006 |
Update or Other Action |
Preliminary Assessment/Site Investigation Report for Driftwood Bay RRS for entire installation; draft dated October 2005 received on October 19; ADEC comment letter on November 23; Air Force response to comments received electronically December 15; ADEC approval letter issued December 19, 2005; Final PA/SI report dated December 2005 received February 17, 2006. |
Jeff Norberg |
| 7/21/2006 |
Meeting or Teleconference Held |
Stakeholders met for a 3-day Triad Systematic Planning meeting between July 18 and July 20, 2006 to discuss plans to address residual contamination at the former Driftwood Bay RRS facility. The primary purpose of this meeting was to reach an understanding of data quality objectives for each site at Driftwood Bay for eventual site closure and land transfer. Several sites identified as petroleum only, will be investigated in accordance with Alaska State regulations. The investigation and closure for remaining sites will comply with the Comprehensive Environmental Response, Compensation, and Liability Act. |
Jeff Norberg |
| 7/26/2007 |
Update or Other Action |
DEC received a copy of a letter from EPA to the Air Force documenting EPA';s decision of No Further Remedial Action Planned under EPA's Superfund Program. This designation does not relieve the Air Force from complying with appropriate State of Alaska regulations. The facility will remain on the Federal Agency Hazardous Waste Compliance Docket, but will be listed for no further action under the EPA Superfund Program. |
John Halverson |
| 2/22/2008 |
Site Characterization Report Approved |
Contaminated Sites staff reviewed a site characterization report for the Driftwood Bay Radio Relay Station. The site had an upper site where the bill board antennae and composite building were located. The lower camp area contained the support facilities such as the airstrip and fuel tank farm. Several areas have contamination over method 2 cleanup levels. A risk assessment is being done to assess pathways and risk for those areas. The report had quality assurance problems with lab analytical data mostly concerning spiking errors for the surrogates in volatiles |
Jeff Brownlee |
| 3/20/2008 |
Meeting or Teleconference Held |
Contaminated Sites staff met with the Air Force 611 and their contractor on the Driftwood Bay Long Range Radar Site. The meeting was to discuss comments on the draft site characterization report. All issues were resolved with exception of how to flag volatile organic carbon data with surrogate quality control errors. The contractor made a good argument that the data shouldn’t be rejected; however the state is bound by the National Functional Guidelines for data criteria. We will continue discussion whether the Air Force can use a modified flag so the data can still be used as a screening tool |
Jeff Brownlee |
| 4/4/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Jeff Brownlee |
| 12/19/2008 |
Meeting or Teleconference Held |
Contaminated Sites staff participated in a comment meeting on the draft risk assessment for the former Driftwood Bay Radio Relay Station. There is ecological risk for various species at three sites from lead and Polycyclic Aromatic Hydrocarbons (PAHs) well over acceptable state risk levels. One site is a landfill where ash was sampled from a test pit. One site is a former POL tank farm near the coast and another site is an electronic debris area with elemental lead from battery carcasses on the ground surface |
Jeff Brownlee |
| 5/8/2009 |
Risk Assessment Report Approved |
Contaminated Sites staff reviewed and commented on revised draft documents for the Driftwood Bay former Radio Relay Station on Unalaska Island about 15 miles from Dutch Harbor. The Air Force 611th has performed a remedial investigation/site characterization and risk assessment for the site. Risk associated with lead in soil at two sites is over state human health and ecological standards. The site will require institutional controls for a landfill and petroleum contamination in soil and groundwater. Future remedial action and further investigation is anticipated for the site |
Jeff Brownlee |
| 9/11/2009 |
Update or Other Action |
In 1991, the US Army Corps of Engineers, under the Formerly Used Defense Site (FUDS) Program, contracted with Anderson Excavating and Wrecking Company to demolish buildings and cleanup solid wastes at the site. The composite building, POL pump building, airport storage building, ammunition building, water pump house, lighting vault, four billboard antennas and other wastes were demolished and buried in an on-site landfill south of the former composite building. Concrete foundations were left in place. The Corps hired Environmental Management to remove the above and underground fuel storage tanks and pipelines, which were cut up and disposed in the on-site landfill. A total of 350 55-gallon drums were removed. Fuel contaminated soil was excavated, thermally treated and disposed of in the landfill. A 55-gallon drum of PCB and a drum containing lead acid batteries were removed from the site for proper disposal. Subsequently, it was determined that the Air Force still controls the site as the public land withdrawl has not been relinquished. Further cleanup work on the site is not eligible under the FUDS Program.
DEC and the Corps have signed a Containerized / Hazardous, Toxic or Radiologiacl Waste (CON/HTRW) Project Closeout Report (Aug. 2009) documenting no additional CON/HTRW work is eligible under the FUDS Program. The USAF is responsible for remaining environmental restoration work at the site. |
John Halverson |
| 11/6/2009 |
Meeting or Teleconference Held |
Contaminated sites staff participated in an update meeting with project managers from the USAF 611th and their contractor. Discussion included the proposed timeline and scope of work for the 2010 and 2011 field seasons for installing monitoring wells and institutional controls at 4 POL sites and the status of 8 other sites (5 are proposed to be DEC-determined as cleanup complete with no further action; 3 sites are being addressed under CERCLA). |
Curtis Dunkin |
| 2/8/2010 |
Cleanup Complete Determination Issued |
Site SS008 – Pipeline had an alternative soil cleanup level of 8,300 mg/kg DRO, based on migration to groundwater. Upper Confidence Level exposure calculations were used to demonstrate that contaminant concentrations are below Method 3 cleanup levels. |
Curtis Dunkin |
| 7/17/2010 |
Site Visit |
Contaminated sites staff conducted site visits and observations of field work and soil screening and sampling being conducted by the U.S. Air Force 611th and their contractor. Travel to the site was via boat out of Dutch Harbor, Alaska. The primary purpose of this mobilization was to conduct soil screening and sampling (incl. TCLP) to address data gaps associated with two areas within the LF006 site where soil is contaminated with lead at levels ranging between only a few mg/Kg and up to 72,000 mg/Kg. The former POL tank farm (site SS007) and the former POL pipeline (site SS008) were also inspected during this site visit. Prospective installation locations for groundwater monitoring wells at SS007 were inspected and discussed. |
Curtis Dunkin |
| 11/3/2010 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 71077 DRO in soil. |
Curtis Dunkin |
| 2/2/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 71077 name: DRO in soil |
Bianca Reece |
| 9/18/2023 |
CERCLA PA |
On this date, DEC reviewed the Draft Preliminary Assessment Report for Aqueous Film-Forming Foam (AFFF) areas, Driftwood Bay Radio Relay Station, Alaska. No AFFF sources (fire training or non-fire training) areas were identified at the RRS. |
Cascade Galasso-Irish |
