| Action Date |
Action |
Description |
DEC Staff |
| 5/7/1981 |
Site Added to Database |
Fuel oil and transformer contaminants. |
Former 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 |
| 7/15/1988 |
Update or Other Action |
PA action added by Shannon and Wilson, Inc., on 2/19/1997. Based on FUDS Site Summary, PA completed 7/88. |
S&W-Miner |
| 9/30/1989 |
Update or Other Action |
(Old R:Base Action Code = RDRA - Remedial Design / Remedial Action). RDRA action (for HTRW) added by Shannon and Wilson, Inc., on 2/19/97. Based on FUDS Site Summary dated 2/21/96, RD completed 9/30/89. |
S&W-Miner |
| 4/16/1990 |
Update or Other Action |
(Old R:Base Action Code = RDRA - Remedial Design / Remedial Action). RDRA action (for Con/HTRW) added by Shannon and Wilson, Inc., on 2/19/97. Based on FUDS Site Summary dated 2/21/96, RD completed 4/16/90. |
S&W-Miner |
| 8/30/1992 |
Interim Removal Action Approved |
IA action (for CON/HTRW) added by Shannon and Wilson, Inc., on 2/19/97. Based on FUDS Site Summary dated 2/21/96, IA completed 8/30/92. |
S&W-Miner |
| 4/22/1994 |
Update or Other Action |
(Old R:Base Action Code = NFA - No Further Action Required (CERCLA)). EPA no further action letter. |
Former Staff |
| 7/13/1994 |
Preliminary Assessment Approved |
Preliminary Assessment (dated January 1994) prepared by CH2M Hill; received on July 13, 1994. |
Ray Burger |
| 5/3/1995 |
Update or Other Action |
Draft Work Plan White Alice Communications System (dated May 1995) received on May 3, 1995; no final version received by ADEC. |
Ray Burger |
| 5/25/1995 |
Document, Report, or Work plan Review - other |
Staff commented on the draft work plan (site investigation, sampling and analysis plan, quality assurance plan). Staff commented that 3 soil samples along a 3 mile long pipeline is insufficient to come to any conclusion regarding the contamination present or absent at the pipeline. Historically reported areas of contamination were found but the location is unknown and useless for directing current field efforts. Limited sampling (one sample) from doorways, landfills will not likely produce any data to lead to any kind of decision. Soil sample locations should be from original grade since many areas have been regarded during past remedial actions. See site file for additional information. |
Ray Burger |
| 6/15/1995 |
Site Ranked Using the AHRM |
Initial ranking. Action code added because it wasn't when site was originally ranked. |
Ray Burger |
| 9/13/1995 |
Update or Other Action |
(Old R:Base Action Code = SI - Site Investigation). SI action added by Shannon and Wilson on 3/13/97, based on Relative Risk Evaluation worksheet dated 9/13/95. Current phase is IRP PA/SI in progress. Data is from samples collected during cleanup and demolition activity between 1984-1991. However, there are no formal reports. Pathways and receptors are not identified on worksheet. |
S&W-Miner |
| 9/21/1995 |
Update or Other Action |
Draft Site Investigation Report White Alice Communications Site (dated September 1995) received on September 21, 1995; no final received by ADEC. |
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 Number Identifier Changed |
Changed sequence number from 21 to 40. |
Bill Petrik |
| 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 |
Document, Report, or Work plan Review - other |
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 decision does not preclude any further action at the site by another EPA program, the State or other Federal agency.
EPA's NERAP designation does not relieve your facility from complying with appropriate Alaska state regulations. The Superfund Amendments and Reauthorization Act (SARA) of 1986, Section 120(a)(4) requires federal facilities to comply with state cleanup requirements and standards when not listed on the NPL.
If new or additional information becomes available suggesting that the site may warrant further evaluation, EPA will re-evaluate the site accordingly. |
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 |
| 4/7/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Jeff Brownlee |
| 7/17/2008 |
Update or Other Action |
Staff reviewed and commented on a draft Remedial Investigation (RI) Report for the Driftwood Bay Radio Relay Station. The Air Force 611th is producing separate documents for the CERCLA concerns and petroleum impacts at the site. The RI applies to three sites containing lead and PCB contamination. Future negotiation will determine if the sites are cleaned up or risked |
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 |
| 4/7/2009 |
Meeting or Teleconference Held |
Staff participated in a comment resolution meeting for an interim remedial action at the former Driftwood Bay Radio Relay Station. Lead levels in soil at the Electronic Debris Area are well over human health risk levels. The Air Force is proposing using a phosphate based chemical binder to reduce the bioavailability of the lead in soil to below hazardous waste levels. A final remedy will be decided at a later time |
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 |
| 5/8/2009 |
Site Characterization 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 |
Update or Other Action |
Site OT001 – USTs and Antennas - is recommended for cleanup complete with Institutional Controls (ICs). ICs are proposed on this site for the following reasons: 1) document the location and extent of residual contamination, 2) limit land use solely to very limited/remote recreational use (as outlined in the risk assessment), and 3) to document the need to properly manage residual contamination in accordance with applicable regulations.
|
Curtis Dunkin |
| 2/8/2010 |
Cleanup Level(s) Approved |
ADEC Determination of Final Compliance for Driftwood Bay Radio Relay Station (RRS) Sites
Three sites (OT001 – USTs and Antennas, SS010 – Water Supply Pump House, and WP003 – Waste Pit) are recommended for cleanup complete with Institutional Controls (ICs). ICs are proposed on these three sites for the following reasons: 1) document the location and extent of residual contamination, 2) limit land use solely to very limited/remote recreational use (as outlined in the risk assessment), and 3) to document the need to properly manage residual contamination in accordance with applicable regulations.
Please continue to coordinate with us on development and implementation of the ICs for sites OT001, SS010, and SP003 and the work plan and ICs for site SS007. Once the ICs are in place for sites OT001, SS010 and SP003, the status of these sites will be changed to Cleanup Complete with ICs. After ICs are in place and the groundwater contaminant plume at SS007 is shown to be attenuating the status of that site will also be changed to Cleanup Complete with ICs. |
Curtis Dunkin |
| 2/8/2010 |
Document, Report, or Work plan Review - other |
The Alaska Department of Environmental Conservation (ADEC) Contaminated Sites Program has completed its review of 611 CES’ written request (dated September 24, 2009) for determination of final compliance for 13 sites addressed in the Final Site Characterization Report - Driftwood Bay Radio Relay Station, September 2009. These sites had petroleum compounds as contaminants of potential concern & did not have CERCLA hazardous substance contamination, thus the sites are being addressed under the Alaska site cleanup rules found in 18 AAC 75.
Three sites (OT001 – USTs & Antennas, SS010 – Water Supply Pump House, & WP003 – Waste Pit) are recommended for cleanup complete with Institutional Controls (ICs). ICs are proposed on these three sites for the following reasons: 1) document the location & extent of residual contamination, 2) limit land use solely to very limited/remote recreational use (as outlined in the risk assessment), & 3) to document the need to properly manage residual contamination in accordance with applicable regulations.
Please continue to coordinate with us on development & implementation of the ICs for sites OT001, SS010, & SP003 & the work plan & ICs for site SS007. Once the ICs are in place for sites OT001, SS010 & SP003, the status of these sites will be changed to Cleanup Complete with ICs. After ICs are in place & the groundwater contaminant plume at SS007 is shown to be attenuating the status of that site will also be changed to Cleanup Complete with ICs.
Also, note that 18 AAC 75.325(i) requires a responsible person to obtain DEC approval before disposing of soil or groundwater from a site that is subject to the site cleanup rules or for which the department has issued a cleanup complete determination under 18 AAC 75.380(d)(1).
The decisions described above may be reviewed & revised, in accordance with 18 AAC 75.380(d)(2), if new information becomes available that indicates contaminants or wastes at the site may pose an unacceptable risk to human health or the environment.
|
Curtis Dunkin |
| 1/27/2015 |
CERCLA ROD Approved |
ROD signed 3/7/13 |
Debra Caillouet |
| 1/27/2015 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79730 name: PCB in soil |
Debra Caillouet |
| 7/24/2015 |
CERCLA Remedial Design/Remedial Action Plan Approved |
Final Remedial Action (RA) Work Plan for Remedy Implementation at the Former Driftwood Bay Radio Relay Station, Alaska July 2015 received.
Per the final ROD for OT001 (USAF, 2013a), approximately 320 CY of PCB-contaminated soil is to be removed as part of this RA. There are two areas, one on the north and one on the south of the Former Composite Building where PCB-contaminated soil exceeding the ADEC SCL of 1 mg/kg (ADEC, 2015) in accordance with the site ROD (USAF, 2013a).
Prior to commencing site excavation, the areal extent of the two areas of PCB-contaminated
soil shown in the ROD will be surveyed and marked. ELISA EnSys™ field screening test kits for PCBs will be used, along with the historic sample results, to guide the excavation of PCB-contaminated soil. Once excavation has thought to have been completed, confirmation samples will be collected and sent to the off-site laboratory for analysis.
The excavation will remain open until it is confirmed that the samples are below the 1 mg/kg SCL. Once the excavation has been deemed complete, the excavated areas will be graded with the surrounding topography to ensure that no standing water is allowed to accumulate. |
Debra Caillouet |
| 4/4/2016 |
Update or Other Action |
Interim 2016 Remedial Action Report received. The RA at OT001 in 2015 resulted in the excavation, containerization, and disposal of 329.65 tons of contaminated soil. Confirmation samples collected from the excavation extents met SCLs at both the North and South excavations. Therefore, no further RA is required at OT001. |
Louis Howard |
| 4/19/2016 |
Document, Report, or Work plan Review - other |
On behalf of the Alaska Department of Environmental Conservation (ADEC), I have reviewed the draft-final Interim 2016 Remedial Action Report for DA013, LF006, OT001, and WP003 at Driftwood Bay RRS. ADEC has reviewed and commented on the work plan for follow-on work in 2016 which is based upon this report. ADEC requests the field work interim reports precede the subsequent work plans in the future by at least forty five days. Please finalize this document.
|
Louis Howard |
| 3/30/2017 |
Update or Other Action |
DRAFT FINAL 2015 - 2016 REMEDIAL ACTION REPORT FOR REMEDY IMPLEMENTATION AT THE FORMER DRIFTWOOD BAY RADIO RELAY STATION, ALASKA Contract No.: FA8903-09-D-8556 Task Order No.: 008 CAPE Project No.: 98556.008 received for review and comment.
A total of 329.65 tons of polychlorinated biphenyl (PCB)-contaminated soil was excavated,
containerized, and disposed of at Columbia Ridge Landfill in Arlington, Oregon, in 2015.
Confirmation samples collected from the excavation extents met site SCLs at both the North and South excavations. No further RA was required at OT001 in 2016. Based on the analytical data collected at Site OT001, the Air Force concludes that the site OT001 meets “Cleanup Complete” closure criteria.
See site file for additional information. |
Louis Howard |
| 4/3/2017 |
Document, Report, or Work plan Review - other |
Comments on the draft 2015-16 RA report.
Site DA013 – Burned Battery Area; and
Site OT001 – Former Composite Building, Antenna Arrays, and Tanks
ADEC concurs that these sites have met site cleanup levels and are eligible for a “cleanup complete” determination by ADEC.
See site file for additional information. |
Louis Howard |
| 9/17/2018 |
Document, Report, or Work plan Review - other |
A letter was sent regarding the 2018 ADEC tech memo which establishes drinking water action levels for six PFAS when detected in groundwater or surface water used for drinking at Driftwood Bay Radio Relay Station. The tech memo establishes drinking water action levels for six PFAS when detected in groundwater or surface water used for drinking. These compounds, selected in accordance with the U.S. Environmental Protection Agency’s third Unregulated Contaminant Monitoring Rule (UCMR3) under the Safe Drinking Water Act, include: perfluorooctane sulfonate, also known as perfluorooctane sulfonic acid (PFOS), perfluorooctanoic acid, also known as perfluorooctanoate (PFOA), perfluorononanoic acid (PFNA), Perfluorohexanesulfonic acid (PFHxS), Perfluoroheptanoic acid (PFHpA), and perfluorobutane sulfonate (PFBS). Based on review of available information, DEC considers these six UCMR3 compounds to be hazardous substances under state law.
See site file for additional information. |
Louis Howard |
| 9/17/2018 |
Document, Report, or Work plan Review - other |
Staff sent a letter notifying Air Force of Action Levels for PFAS in Water and Guidance on Sampling Groundwater and Drinking Water Technical Memorandum dated August 20, 2018. Action levels for UCMR3 PFAS compounds in groundwater and surface water used as drinking water are as follows: Where one or more of the PFAS compounds, PFOS, PFOA, PFNA, PFHxS, or PFHpA are detected in a water sample analytical result, the sum of the concentrations for all detected compounds will be compared to an action level of 0.07 µg/L. Where PFBS is present in a water sample analytical result, the detected concentration will be compared to an action level of 2.0 µg/L. Please note that all future sampling results for PFAS-impacted groundwater, surface water, and pore water must include results for all six UCMR3 PFAS compounds.
See site file for additional information.
|
Louis Howard |
| 4/30/2021 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 79730 PCB in soil. |
Cascade Galasso-Irish |
| 2/24/2022 |
Cleanup Complete Determination Issued |
Cleanup complete determination issued on this date. EPM2 approval in file for DRO contamination remaining above Method 2 Table B2 CULs. Migration to groundwater pathway shown to be incomplete. PCBs have been excavated and removed off site. |
Cascade Galasso-Irish |
| 2/24/2022 |
Institutional Control Record Removed |
Institutional Controls have been removed. |
Cascade Galasso-Irish |
| 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 |
