Site Report: Adak MF-26 Sweeper Cove South Minefield
| Site Name: | Adak MF-26 Sweeper Cove South Minefield |
|---|---|
| Address: | OU B-1, Adak Naval Air Facility, Adak, AK 99546 |
| File Number: | 2501.38.005 |
| Hazard ID: | 3570 |
| Status: | Cleanup Complete - Institutional Controls |
| Staff: | Jamie McKellar, 9074515175 jamie.mckellar@alaska.gov |
| Latitude: | 51.850356 |
| Longitude: | -176.652678 |
| Horizontal Datum: | NAD83 |
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We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.
Problems/Comments
Ordnance or ordnance-related problems. The Sweeper Cove South Minefield Candidate Site is located southwest of downtown Adak along the southwestern shoreline of Kuluk Bay. Portions of the Sweeper Cove South Minefield were investigated in 1997 during the investigation of the Priority I and II Areas of Adak. At that time, it was not known that this site was a historical proposed defensive minefield; however, when the archive record documenting the minefield location was found, the investigation data for the earlier study was reviewed to determine if the minefield area had been studied. The location for the minefield presented in the training memorandum was inexact, but it was possible to identify the most likely location in the field based upon terrain and professional knowledge of military defensive tactics. After identifying the most likely location for the minefield it was determined that the entire area was surface cleared during the previous investigation of the Priority I and II Areas of Adak. None of the investigation grids in this area were selected for geophysical survey or intrusive investigation based upon the rocky substrate and the presence of the roadway. No mine-related wastes were found during the surface clearance performed in this area. NOFA was selected in the OU B-1 ROD. Draft Close Out Report for Partial Delisting submitted for Department review on June 16. Comments were submitted to the Navy on August 16.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 4/15/2000 | Site Added to Database | Ordnance or ordnance-related problems. | Elim Yoon |
| 4/15/2000 | Update or Other Action | The Level I Screen is a framework intended to facilitate somewhat objective evaluation of subjective issues and information. The screen considers the ordnance characteristics of the site (i.e., type of ordnance and density) along with physical characteristics of the site (i.e., terrain and vegetation) to determine the qualitative risk associated and the general category of future action that may be needed at the site to minimize that risk (i.e., additional investigation, remedial action, or no action). The screen also incorporates evaluation of the strength of evidence upon which screening decisions are made to ensure that there is reasonable supporting data for the choices made at this stage of the process. | Elim Yoon |
| 12/11/2001 | Record of Decision | ROD signed on this date | Elim Yoon |
| 12/28/2001 | Institutional Control Record Established | Institutional Control Established. Includes: Requirements for Inspections and Reporting, requirements for Education Program, and requirements for Sign Inspections. See document “Adak Island Institutional Control Management Plan, Final Edition, December 2001, Prepared by: Engineering Field Activity, Northwest.” | Elim Yoon |
| 8/31/2004 | Conditional Closure Approved | NOFA selected in OU-B1 ROD; Ordnance Awareness Program IC in place. | Jason Weigle |
| 10/19/2004 | GIS Position Updated | Latitude and Longitude was derived using ArcGIS with either High Resolution Aerial Photography from the Navy with an up to 3 meters error, or line maps used in investigations combined with road layers, +/-25 feet accuracy. Metadata is as follows: Updated NAD 1983 State Plane Alaska 10 FIPS 5010 Feet; Projection: Lambert Conformal Conic; False Easting: 3280833.333333; False Northing: 0.000000; Central Meridian: -176.000000; Standard Parallel 1: 51.833333; Standard Parallel 2: 53.833333; Latitude of Origin: 51.000000; GCS North American 1983. | Jason Weigle |
| 3/7/2005 | Update or Other Action | Added MRTS data, derived from ADNR and USGS range, township, and section data overlaid on lat/lon coordinates derived previously. Accuracy is equivalent to the lat/lon coordinates. MRTS information depicts the center point of range fans and target areas; actual target areas or fans may overlap several sections. | Jason Weigle |
| 6/16/2005 | Update or Other Action | Draft Close Out Report for Partial Delisting submitted for review on this date. | Jason Weigle |
| 8/16/2005 | Update or Other Action | Comments on Draft Close Out Report for Partial Delisting submitted to Navy on this date. | Jason Weigle |
| 4/5/2006 | Update or Other Action | File number 2501.38.005 assigned on this date. | Jason Weigle |
| 3/11/2024 | ANCSA Program Ineligible | This site is not on ANCSA conveyed land and does not qualify for the EPA Contaminated ANCSA Lands program. This site will be listed as “ineligible” on EPA’s contaminated sites inventory. | Brittani Mack |
| 9/29/2025 | Document, Report, or Work plan Review - other | COMPREHENSIVE MONITORING PLAN, Revision 9, Institutional Control Management Plan. DEC provided comments on CMP Revision 9 which describes the mechanisms that have been implemented to ensure compliance with institutional controls (ICs) for sites at the former Adak NAS (includes active sites and sites closed with ICs). The CMP also includes the details for Munitions Educational Awareness Program, which is required by the OU B-1 ROD and will address sites in the in-draft OU B-2 ROD. Note that munitions sites addressed in the OU B-1 ROD with slopes exceeding 30 degrees were issued No Further Action determinations as part of that ROD. This includes C3-01A through C3-01F, FB-01, FB-03, 260 HH-01, ML-01A, ML-01B, and ML-01C. | Jamie McKellar |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| UXO | Inactive Range Ordnance Management- 46.03.100(e)(7) | Soil |
Control Type
| Type | Details |
|---|---|
| Ordnance Awareness Program | An Ordnance Awareness Program was instituted as part of the OU B-1 Record of Decision. |
Requirements
| Description | Details |
|---|---|
| Ordnance Awareness Program | The Ordnance Awareness Program is a set of educational tools that are used to teach people about ordnance hazards on Adak. Annual evaluation of effectiveness included in the IC Inspection Report. |
There are no documents for this site report.
No associated sites were found.