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Site Report: Sitka NOB - Areas B/C/D/I/J - Frmr Army Navy Service Station, Water Tower TF, TF Nos. 1/4/5

Site Name: Sitka NOB - Areas B/C/D/I/J - Frmr Army Navy Service Station, Water Tower TF, TF Nos. 1/4/5
Address: Sitka Naval Operations Base; Japonski Island; 0.5 Miles West of Sitka, Sitka, AK 99835
File Number: 1525.38.020
Hazard ID: 25734
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 57.049320
Longitude: -135.355119
Horizontal Datum:WGS84

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

The Sitka Naval Operations Base (NOB) consisted of a naval air station, subordinate naval shore activities, radio station, hospital, naval section base, and marine barracks, and was the main Navy floatplane facility in southeastern Alaska during World War II. Current landowners of the former Sitka NOB sites include: Alaska Area Native Health Service; Alaska Department of Education and Early Development; and Alaska Department of Transportation and Public Facilities. The USACE began environmental work at the site in 1991. During the course of the remedial investigations, the site was divided into eleven areas, identified in the Decision Document as: Area A – Power Plant; Area B – Former Army/Navy Service Station; Area C – Water Tower Tank Farm; Area D – Tank Farm No. 1 (Hospital Access Road Tank Farm); Area E – Millerville Housing Area; Area F – Tank Farm No. 2; Area G – Igarotte Housing Area; Area H – Seaplane Dock; Area I – Tank Farm No. 4; Area J – Tank Farm No. 5; and Area K – Tank Farm No. 3. On 9/27/11 the Sitka Naval Operations Base database entry was divided into seven separate records. Original Hazard ID 1992 was renamed from Sitka Naval Operating Base to Sitka NOB - Area F - Tank Farm No. 2, and additional database records were created for Area A - Power Plant; Areas B/C/D/I/J - Frmr Army Navy Service Station, Water Tower TF, TF Nos. 1/4/5; Area E - Millerville Housing; Area G -Igarotte Housing Area; Area H - Seaplane Dock; and Area K Tank Farm No. 3. This site represents: Areas B/C/D/I/J - Frmr Army Navy Service Station, Water Tower TF, TF Nos. 1/4/5. The most significant potential sources of contamination were: Area B - service station USTs and the piping associated with Tank Farm No. 1 that ran across the site. DRO, GRO, and other POL-related constituents were the primary contaminants of concern in the soils and groundwater. Area C - six fuel storage tanks and associated piping. DRO, GRO, BTEX, and lead were the primary contaminants of concern. Area D - eight fuel storage tanks and associated piping, tank truck loading rack, numerous concrete vaults, former electrical building, and two outfall drains. DRO, GRO, BTEX, and lead were the primary contaminants of concern. Area I - four ASTs and associated piping. POL-related constituents would have been the primary contaminants of concern, but no significant contaminant concentrations were reported in the soils at this site. Area J - eight ASTs in the former tank farm and associated piping. Contaminants of concern at this site included POL constituents and lead.

Action Information

Action Date Action Description DEC Staff
4/19/1995 Site Characterization Report Approved Phase 1 Remedial Investigation report approved this date. Employee Past
9/1/1995 Update or Other Action Community Relations Plan Employee Past
7/3/1996 Risk Assessment Workplan Approved Risk Assessment work plan approved this date. Employee Past
8/1/1996 Site Characterization Report Approved Phase 2 Remedial Investigation approved this date. Employee Past
3/1/1998 Update or Other Action EE/CA submitted. Employee Past
8/1/1998 CERCLA FS Feasibility Study approved this date. Employee Past
11/20/1998 Risk Assessment Report Approved Risk Assessment report approved this date. Employee Past
2/23/1999 Cleanup Plan Approved Cleanup plan for the excavation and off-site disposal of contaminated soil approved this date. Cleanup levels approved as interim removal action screening levels. Anne Marie Palmieri
2/24/2000 Interim Removal Action Approved The Interim Removal Action Report was approved this date. Although excavation was planned at each of these areas, supplemental sampling did not find contamination present at concentrations above the IRA screening levels. Therefore, no soil was excavated. Sample results are documented in the IRA report. Anne Marie Palmieri
9/27/2002 Cleanup Level(s) Approved 18 AAC 75.350 Determination granted for this site. Groundwater cleanup levels approved as 10x the Table C values. These alternative cleanup levels are appropriate for an area where groundwater is not a current or reasonably potential future source of drinking water. Anne Marie Palmieri
6/8/2004 Cleanup Level(s) Approved Soil cleanup levels approved this date. Soil alternative cleanup levels for petroleum are based upon the groundwater 10x rule. Anne Marie Palmieri
4/2/2007 CERCLA ROD Approved John Halverson signed tht Declaration of Project Closure Decision for the CON/HTRW project on this date. Anne Marie Palmieri
9/28/2008 Site Characterization Report Approved Final Remedial Investigation Report Addendum approved this date. The report summarizes all of the past information (characterzation and cleanup) of the site. No significant areas of contamination remain. No Feasibility Study will be prepared. Perferred alternative is "no action". Anne Marie Palmieri
9/24/2009 CERCLA ROD Approved Decision document signed this date. All sample results were below the approved groundwater and soil cleanup levels, therefore no action is needed. Anne Marie Palmieri
9/27/2011 Site Added to Database A new site has been added to the database Mitzi Read
9/27/2011 Update or Other Action On 9/27/11 the Sitka Naval Operations Base database entry was divided into seven separate records. Original Hazard ID 1992 was renamed from Sitka Naval Operating Base to Sitka NOB - Area F - Tank Farm No. 2, and additional database records were created for Area A - Power Plant; Areas B/C/D/I/J - Frmr Army Navy Service Station, Water Tower TF, TF Nos. 1/4/5; Area E - Millerville Housing; Area G -Igarotte Housing Area; Area H - Seaplane Dock; and Area K Tank Farm No. 3. Mitzi Read
9/30/2011 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 79176 name: Sitka NOB - Areas B/C/D/I/J - Frmr Army Navy Service Station, Water Tower TF, TF Nos. 1/4/5 Anne Marie Palmieri
10/13/2011 Cleanup Complete Determination Issued USACE Declaration of Project Closure signed by John Halverson this date Anne Marie Palmieri
11/17/2011 Institutional Control Record Removed Institutional Controls have been removed. Anne Marie Palmieri
11/17/2011 Institutional Control Record Established Institutional Controls established and entered into the database. Anne Marie Palmieri
11/17/2011 Institutional Control Record Established Institutional Controls established and entered into the database. Anne Marie Palmieri
11/17/2011 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 79176 Sitka NOB - Areas B/C/D/I/J - Frmr Army Navy Service Station, Water Tower TF, TF Nos. 1/4/5. Anne Marie Palmieri
7/9/2021 Document, Report, or Work plan Review - other Reviewed the June 24, 2021 SEARHC Millerville Phase II ESA work plan on this date. This is a landowner driven investigation so DEC did not provide comments/recommendations on the work plan, but is aware that the work is being done later in the month. Evonne Reese

Contaminant Information

Name Level Description Media Comments
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
Lead - Total < Method 2 Most Stringent Soil
DRO < Table C Groundwater

Control Type

Type Details
No ICs Required

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.

No associated sites were found.

Missing Location Data

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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
TDD: 800-770-8973
Physical Location: 410 Willoughby