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Site Report: Fort Glenn MMRP Idak Range

Site Name: Fort Glenn MMRP Idak Range
Address: East Side of Umnak Island, ~65 Miles SW of Dutch Harbor, Dutch Harbor, AK 99692
File Number: 2550.38.002
Hazard ID: 4555
Status: Active
Staff: Erica Blake, 9074512182 erica.blake@alaska.gov
Latitude: 53.448611
Longitude: -167.905556
Horizontal Datum:NAD83

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

Fort Glenn was established in 1942, as a 102,062-acre Army airfield and defense garrison. The facility consisted of numerous structures, ammunition magazines and firing points. The facility was decommisioned between 1952 and 1955. Discarded Military Munitions, Chemical Warfare Materiel, Munitions Debris, munitions and explosives of concern, and unexploded ordnance are suspected of being present on the site of the former Fort Glenn. Idak Range was depicted on historical maps and verified during the site inspection. The range was recognized as a 500-yard Known Distance (KD) Rifle Range. The width was estimated to be approximately 400 yards which was sufficient to accommodate a 50 man firing line. A known distance range was utilized for weapons (small arms) familiarization and qualifications. KD ranges may be designated 200-yard, 300-yard, or 500-yard. Based on observation, firing lines were positioned at 100 yd, 200 yd, 300 yd, and 500 yd, respectively. An additional 1,000-yard firing line may have been present; although, these firing lines typically consisted of a small number of firing points. The range comprised of a salvage wall (earthen berm) constructed directly behind the targets, the targets, the firing line(s), an area behind the firing lines, which typically included the ready line, ammunition issue point, and administrative area. The 30° safety fan originates from the ends of each firing line, extends down range 1,000 yards, at which point it continues an additional 2,900 yards parallel to the direction of fire. RMIS Range ID: F10AK029804R03

Action Information

Action Date Action Description DEC Staff
9/15/1985 Update or Other Action Corps of Engineers completed an Inventory Report for Fort Glenn. It documented ~5,000 drums, 31 fuel tanks, hundreds of deteriorating buildings (mainly Quonset huts) and other wastes at the site. John Halverson
6/30/1987 Update or Other Action Corps completed a Contaminant Inventory and Preliminary Risk Assessment, Fort Glenn. It describes observations and sampling results from the site: water contamination (Thirty Mile, Camp Creek and an unidentified lake) identified as the most urgent problem. It described mercury contamination in the 10,000 gallon fuel tanks and states that it should be removed before any more of it spills into the ground. It recommended placing a clean soil cap over low level PCBs in soil near the transformer platforms. It also stated that ownership of drums at the Reeve Aleutian Airways shed should be ascertained. John Halverson
10/15/1989 Update or Other Action (Old R:Base Action Code = SI - Site Investigation). SI action added by Shannon and Wilson, Inc., on 2/19/97. Based on FUDS Site Summary dated 2/21/96, SI for contaminated soil and water started 10/89 by Corps. S&W-Miner
9/17/1993 Update or Other Action Corps received approval from its headquarters to design and conduct a remedial action addressing containerized wastes (drums, fuel tanks etc.) and associated contaminated soil, removal and disposal of deteriorating buildings and other debris, and conducting a site inspection to determine whether there is a need for further remedial investigation and possibly cleanup. John Halverson
8/29/1996 Update or Other Action EPA submitted a Preliminary Assessment Report for Fort Glenn (CERCLIS Id # AK0001366673), prepared by URS Consultants. It documents that ranchers at Fort Glenn had found grenades and fragmentation bombs at the north camp 1.5 miles west of the Birchwood hanger. Corps EOD to respond in near future. The remainder of the PA summarized earlier investigations and existing site information. John Halverson
6/15/1997 Update or Other Action Corps verbally informed ADEC that ordnance at Fort Glenn was detonated in place by the EOD team. No formal documentation provided. John Halverson
6/15/1997 Update or Other Action (Old R:Base Action Code = SI - Site Investigation). EPA conducted a Site Investigation through URS. Petroleum contaminated soil and sediment is widespread. More localized inorganics at elevated levels. John Halverson
11/9/1999 Site Ranked Using the AHRM Ranked site using available data - "High Priority". John Halverson
12/14/2000 Site Ranked Using the AHRM Changed the GW Exposure Index Value to 0 from 1 because GW is not used as a DW source. Still a Medium Priority site. Former Staff
5/1/2001 Update or Other Action Work plan reviewed for site investigation. Debra Caillouet
9/10/2001 Update or Other Action Site visit report documenting UXO at an OB/OD pit received from ADEC contractor confirming presence and identifying possible other sites for investigation. Debra Caillouet
1/24/2002 Update or Other Action ADEC reviewed and submitted comments on the draft Archive Search Report. Debra Caillouet
8/29/2002 Update or Other Action Staff sent the USACE a letter requesting a schedule for submission of the RI report, UXO detonation and a UXO avoidance plan. Debra Caillouet
9/24/2002 Update or Other Action DEC received a letter report on the UXO action July 24-30, 2002. The EOD team from Fort Richardson disposed by detonation the UXO that had been found last year. The detonation exposed more UXO and that was also disposed of by detonation. The second detonation exposed additional UXO that the team did not have materials left to detonate with. Team recommended actions are: immediately post signs in possible UXO contaminated areas to increase awareness; full burn of vegetation in ordnance contaminated areas; after burn, conduct a full sweep of area; collect ordnance residue; separate hazardous and non-hazardous items; dispose of hazardous residue by detonation/thermite burn and; certify remaining items as scrap. Debra Caillouet
11/27/2002 Update or Other Action Staff submitted lengthy comments on the draft RI report for the 2001 field season. The report was written as a data report and did not meet the regulatory requirements. Debra Caillouet
1/2/2003 Update or Other Action Staff met with the USACE project delivery team and their contractor to discuss the RI report. All of DEC's comments were accepted and a new draft RI report will be submitted in 60 days. Debra Caillouet
4/24/2003 Update or Other Action Staff submitted lengthy comments on a draft RI report covering the 2001 field work. Debra Caillouet
8/25/2003 Site Added to Database This has been split out from RECKEY 199625X1132507 to track only the ordnance related items at Fort Glenn. This may also need to be split further as additional areas of concern are identified. Debra Caillouet
2/6/2004 Update or Other Action Staff submitted comments on an instrusive work plan Debra Caillouet
5/25/2004 Update or Other Action Staff reviewed a work plan for geophysical investigation. Debra Caillouet
6/23/2004 Update or Other Action Public Notices for meetings in Anchorage, Unalaska and Nikolski were recieved for meetings July 6,7 and 8. Debra Caillouet
6/25/2004 Site Characterization Workplan Approved The final work plan for the geophysical survey for the Chemical Warfare Materiel Scoping and Security Study incorporated all DEC comments. Debra Caillouet
3/17/2005 Update or Other Action File number issued 2550.38.001 Aggie Blandford
9/1/2005 Update or Other Action Staff prepared comments on the Draft Final, Site Specific Chemical Warfare Materiel Scoping and Security Study Report, for the formerly used defense site Fort Glenn. In general DEC agrees with the ranking of the site as a category D but provided comments on the ranking of the individual components that comprise the final score Debra Caillouet
5/24/2006 Meeting or Teleconference Held Staff participated in the Technical Project Planning meeting with the Corp and Parson for the SI at Ft Glenn Debra Caillouet
7/25/2006 Update or Other Action File number changed from 2550.38.001 to 2550.38.002. Aggie Blandford
2/1/2007 Update or Other Action Staff prepared significant comments on the Draft Site Specific Work Plan Addendum to The Programmatic Work Plan, Fort Glenn Site (FUDS) November 2006 which is the Site Investigation work plan for the military munitions remaining on Umnak and Unalaska associated with Fort Glenn. Debra Caillouet
3/20/2007 Site Characterization Workplan Approved Staff approved the Site Specific work plan with a comment that Alaska Groundwater and Surface water standards were not identified correctly in the work plan and should be used to evaluate the results of the site inspection. Debra Caillouet
1/11/2008 Update or Other Action Site added to the database. Mitzi Read
4/7/2008 Update or Other Action Summary of SI. Idak Range MRS was depicted on historical maps and verified during the SI. The range was recognized as a 500-yard Known Distance Rifle Range. The width was estimated to be approximately 400 yards, which was sufficient to accommodate a 50-man firing line. Previous field visits have found no MEC and/or MD to date. The ASR Supplement assigned a RAC score of 5 to this MRS, with 5 indicating the least risk. No invsestigation was performed. Debra Caillouet
9/15/2008 Site Characterization Report Approved A revised Final Site Inspection Report was received. The report recommends all munitions sites for a Remedial Investigation/Feasibility Study. Debra Caillouet

Contaminant Information

Name Level Description Media Comments

Control Type

Type Details

Requirements

Description Details

There are no documents for this site report.

No associated sites were found.

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State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
Fax: 907-465-5245
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