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Site Report: USCG Air Station - Sitka

Site Name: USCG Air Station - Sitka
Address: ; , Sitka, AK 99835
File Number: 1525.26.027
Hazard ID: 24384
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 57.055058
Longitude: -135.369849
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

CAP approved, amended 11/6/92, and approved.

Action Information

Action Date Action Description DEC Staff
5/20/1992 Update or Other Action UST closure notice for removal of 4 unregistered USTs (3 JP-5 and one Gasoline). Donald Seagren
5/27/1992 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77876 ADD; Remediation in progress Former Staff
5/27/1992 Update or Other Action NOR; JP-5 Fuel release. 100 cy of contaminated soil removed and 150 gallons of affected groundwater was pumped. Former Staff
5/27/1992 Site Added to Database Former Staff
5/28/1992 Leaking Underground Storage Tank Cleanup Initiated - Petroleum LCAU; 100 CY of contaminated soil removed and 150 gallons of affected groundwater pumped. : LCAU date changed DB conversion Former Staff
6/1/1992 Underground Storage Tank Site Characterization or Assessment SA1; Former Staff
6/23/1992 Leaking Underground Storage Tank Corrective Action Underway CAPR; Outlines specifications for a long term storage cell on-site. Former Staff
7/21/1992 Release Investigation RELR; Removal of seven remaining UST's, additional 500cy contaminated soil removed. Former Staff
11/6/1992 Underground Storage Tank Site Characterization or Assessment UST Site Assessment Work Plan and Ammendments approved by Randy Rice. Donald Seagren
1/11/1993 Update or Other Action Decommissioning Report for JP-5 Tank Removal Project Air Station Sitka, dated November 92 received. Significant soil & GW contamination found during removal of the 7 USTs. Donald Seagren
4/6/1993 Release Investigation Final Draft Report Underground Storage Tank Release Investigation for Air Station Sitka. Donald Seagren
4/7/1993 Site Visit FI; SERO staff Randy Rice investigated site and cleanup operations. Photographs of monitoring wells and remediation piles were taken. Former Staff
6/3/1993 Update or Other Action Randy Rice provides review comments of UST Release Investigation report. High levles of DRO contamiantion still exist. Further information/assessment required before proposed preferred remedition methods are approved. Donald Seagren
4/14/1994 Update or Other Action Level C cleanup level (1,000 ppm DRO) approved for soil at this site. Donald Seagren
5/25/1994 Underground Storage Tank Site Characterization or Assessment USCG proposal for sampling & dealing with oversized material approved by Randy Rice. Donald Seagren
6/2/1994 Leaking Underground Storage Tank Corrective Action Underway Proposed Corrective Action Plan submitted by MWW for USCG. Former Staff
6/10/1994 Leaking Underground Storage Tank Corrective Action Underway Remediation Process Air Station Sitka submitted 2 June 94 by MWW for USCG approved by Randy Rice. Former Staff
11/20/1996 Long Term Monitoring Established Fifth round of sampling reported by USCG. Soil gas and GW samples appear to be decreasing, but still above applicable cleanup levels. Donald Seagren
6/23/1997 Long Term Monitoring Established Sixth round of soil gas monitoring and GW sampling submitted. Decreasing trend in soil and GW continues, although it is unclear whether this is due to bioremediatin or seasonl factors. Passive air blower assemblies installed on all wells. Donald Seagren
1/28/1998 Long Term Monitoring Established DRO contamination still exists at the site exceeding ADEC cleanup levels. Hydrocarbon odor and sheen present in purge water from MW 3,14,& 20. Sheen present on surface of pond adjacent ot MW3. Strong hydrocarbon odor present in area. Donald Seagren
5/18/1998 Long Term Monitoring Established Seasonal fluctuations in sampling results. No significant changes in contaminant levels. Donald Seagren
8/10/1998 Update or Other Action UST closure notification submitted for in-ground closure of 12,000 gallon diesel fuel tanks. Donald Seagren
1/22/1999 Long Term Monitoring Established 30 November 98 semi-annual GW monitoring report submitted. Desreasing contaminant trend . Hydrocarbon odor and sheen on purge water from MW3. No sheen on pond, contaminant levels about same as previous sampling event Soil gas monitoring terminated by request of CEU Juneau.. Donald Seagren
10/2/2001 Update or Other Action Changed Project Manager from Paul Horwath to Bill Janes Cynthia Pring-Ham
1/25/2002 Update or Other Action Changed project manager back to Horwath. Was assigned to Janes by mistake. Bill Janes
2/24/2003 Update or Other Action After file review, sent e-amil to Mark Ridgway, USCG-CEU-Juneau, requesting project status update. Donald Seagren
5/26/2004 Update or Other Action File number assigned and entered into the Fileroom DB and LUST DB. Alyce Hughey
6/5/2006 Cleanup Level(s) Approved Groundwater determination (18 AAC 75.350) made this date and groundwater cleanup levels of 10x Table C (DRO = 15 mg/L) approved. Soil cleanup levels are also 10x, specifically DRO = 2300 mg/kg. Anne Marie Palmieri
9/27/2006 Leaking Underground Storage Tank Corrective Action Underway A corrective action plan was approved this date. Plan calls for the excavation of contaminated soil and disposal off-site. Anne Marie Palmieri
9/24/2007 Exposure Tracking Model Ranking Intitial Ranking Complete for Source Area: 77876 (Autogenerated Action)
12/10/2007 Document, Report, or Work plan Review - other Cleanup report reviewed. Letter sent to USCG this date stating that the site can be conditionally closed when the USCG implements institutional controls. Anne Marie Palmieri
12/17/2009 Cleanup Complete Determination Issued Cleanup complete determination issued this date in accordance with new closure policy. The USCG remains responsible for the appropriate future management of the remaining soil which contains concentrations of DRO below the ACLs but above the default method 2 level of 230 mg/kg. Anne Marie Palmieri
12/17/2009 Long Term Monitoring Complete Administrative action on 5/1/2013. Kristin Thompson

Contaminant Information

Name Level Description Media Comments
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil Concentrations are below ACL of 2300 mg/kg DRO

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.

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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