| Action Date |
Action |
Description |
DEC Staff |
| 2/7/2012 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 6/5/2015 |
Update or Other Action |
Received a draft document titled: Dutch Harbor Limited Removal Action Work Plan, Amaknak and Unalaska Islands, Alaska. The work plan outlines the activities planned to investigate twelve formerly used defense sites (FUDS) on the two islands and remove contaminated soil as necessary. The field activities will be carried out in two phases: Phase I is the investigation and will be conducted during the summer of 2015; Phase II is the removal action which will be carried out in the summer of 2016. ADEC File Number 2542.38.009 will be used to track this project, and all paper and electronic files will be housed under this file number. Updates to this data base will be made to each individual site, which can be accessed by its individual file number or by its (Hazard ID) number. The sites are:
2542.38.014 (25716) Mount Ballyhoo Drums;
2542.38.017 (25722) Pyramid Valley USTs (Bldg. 5264);
2542.38.018 (25704) Rocky Point Bldg. 627;
2542.38.023 (25812) Unalaska Valley UST 2674;
2542.38.023 (2882) Unalaska Valley UST 2766;
2542.38.023 (25804) Unalaska Valley Ski Bowl Generator Bldg.;
2542.38.023 (25811) Upper Unalaska Valley 165th Rd. and Ugadaga Rd. UST 3860;
2542.38.027 (25822) Margaret Bay USTs;
2542.38.029 (1884) Fort Mears USTs, Amaknak Island;
2542.38.029 (25816) Fort Mears Hospital UST;
2542.38.029 (25823) Fort Mears UST 820;
2542.38.033 (25843) Summer Bay AST and 55-Gallon Drum. |
Meredith Savage |
| 8/20/2015 |
Site Characterization Workplan Approved |
The ADEC Contaminated Sites Program received the Final Dutch Harbor Limited Removal Action Work Plan, Amaknak and Unalaska Islands, Alaska. The work plan was not formally approved, but ADEC does not object to the site characterization portions of the work plan. A report should be submitted documenting these site characterization activities. A separate work plan or work plan addendum should be submitted for the limited removal action anticipated for summer of 2016, which details the proposed work as required in 18 AAC 75.360. |
Jessica Morris |
| 5/5/2016 |
Document, Report, or Work plan Review - other |
The 2015 Phase I Investigation Summary Dutch Harbor Limited Removal Action Amaknak and Unalaska Islands, Alaska was submitted on May 1, 2016 and approved by ADEC. This report discussed Phase I RA activities at 9 sites. DRO was detected at a concentration of 340 mg/kg at 10 feet BGS in 1998. One test pit was advanced downgradient from the hospital UST in 2015. Analytical results were below cleanup levels, indicating that if contamination is still present, it is not migrating downgradient. No further action is recommended at this site. |
Holly Weiss-Racine |
| 10/20/2016 |
Document, Report, or Work plan Review - other |
The 2016 Phase II Dutch Harbor Limited Removal Action Report for 9 sites on Amaknak and Unalaska Islands, Alaska was submitted on October 4, 2016 for review by ADEC. This report repeated the language from the Phase I RA report; no further action recommended at this site. |
Holly Weiss-Racine |
| 10/23/2017 |
Update or Other Action |
ADEC approved final Dutch Harbor Limited Removal Action Report. |
Linda (Qi) Liu |
| 1/25/2024 |
Document, Report, or Work plan Review - other |
Bulk action entry for review of the Draft Restoration Summary Report Containerized Hazardous, Toxic, and Radioactive Waste, Amaknak Formerly Used Defense Sites, recommending closure at 53 sites. DEC received the draft summary report on April 2023, and provided comments on June 2023. On January 15, 2024, FUDS submitted a final summary report. Comment resolution has not been performed and is not complete. Further coordination is necessary with FUDS. |
Cascade Galasso-Irish |
| 2/22/2024 |
Document, Report, or Work plan Review - other |
On this date, DEC reviewed and approved the redline final, RTCs, and final Restoration Summary Report for the Amaknak Formerly Used Defense Sites F10AK0841-13, -14, -15, -16, -18, -20, Unalaska Valley, Pyramid Valley-Port Levashef, Summer Bay-Humpy Cove, Margaret Bay-Airport, Mount Ballyhoo, and Little South America in Unalaska, Alaska.
Of the 53 sites included in this report, 39 of these sites are either closed in the Contaminated Sites database or are not eligible active sites. Fourteen (14) sites remain open in the CS database, either pending further coordination on the pathway to closure or are currently with DEC management for closure decision. This letter is documenting the approval of the final document but does not preclude the need for further investigation of sites included in the report. |
Cascade Galasso-Irish |
| 11/6/2024 |
Site Visit |
This site was visited by DEC staff on November 6, 2024. This was a cement underground hospital. A UST was removed from the site but the hospital remains. The UST was removed on the left side of the building in 1998.
|
Kathleen Iler-Galau |
| 11/6/2024 |
Meeting or Teleconference Held |
The Qawalangin FUDS Restoration Advisory Board (RAB) Meeting was held at the Unalaska Public Library. This regional RAB incorporates five FUDS in the Qawalangin region: Amaknak FUDS, Chernofski FUDS, Cape Wislow FUDS, Fort Learnard FUDS, and Ugadaga Bay FUDS. RAB Board Members, USACE-FUDS, DEC, and members of the public were in attendance in-person, with additional stakeholders participating virtually. FUDS PMs provided updates on the status of FUDS sites. The RAB membership also updated their charter and added new members. |
Kathleen Iler-Galau |
| 6/25/2025 |
Cleanup Complete Determination Issued |
CSP issued a Cleanup Complete determination for the Dutch Harbor-Fort Mears Hospital UST. The concrete underground hospital was built in 1941. A site investigation in 1998 discovered a heavily corroded 680-gallon UST used to store heating oil. The site was excavated 270 square ft to 10 ft deep. PID samples did not indicate the presence of petroleum and the site was backfilled. Excavation confirmation samples indicated that petroleum contamination above DEC’s most stringent Method 2 cleanup levels remained at the site. During a site investigation in 2015 a downgradient test pit confirmed contamination was not migrating. An ACL was calculated for the site and it was closed with no institutional controls.
|
Kathleen Iler-Galau |
