Skip to content
Back to Top

Site Report: ARRC Seward Rail Yard Tank 5

Site Name: ARRC Seward Rail Yard Tank 5
Address: ARRC Seward Rail Yard, Seward, AK 99664
File Number: 2332.26.023
Hazard ID: 25411
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229
Latitude: 60.120382
Longitude: -149.428176
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.


Petroleum-impacted soils were encountered in 1992 during the excavation of a regulated 2,000-gallon gasoline underground storage tank (UST) (Tank 5 (T5)) . T5 was located north of the former Old Dock Building in the ARRC Seward Railyard. Approximately 45 cubic yards of soil was removed during the excavation of tank T5. The excavation measured 17.5 feet by 12.5 feet by 9.0 feet in depth. Confirmation samples collected at the base of the excavation contained benzene up to 0.17 mg/kg. Clean fill was used to backfill the excavation. No groundwater was encountered. Note: tank 5 was originally tracked under file 2332.26.003

Action Information

Action Date Action Description DEC Staff
11/20/1992 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77905 ADD; * Not Assigned
11/20/1992 Site Added to Database * Not Assigned
1/1/1993 Underground Storage Tank Site Characterization or Assessment Final Report 1992 activities Underground Storage Tank Removals and Site Characterization, Seward, submitted by ENSR. Three USTs: T-3 (500 gal. gas), T-4 (1,000 gal diesel), and T-5( 2,000 gal. gas) were removed 8/10/92-8/11/92. Approximately 170 cubic yards removed and the excavation was backfilled. Contamination was encounted on the east wall of the T3/T4 excavation, but removal of the contaminated soil was limited due to proximity to the railroad tracks. A PVC gallery was installed at the T-3/T-4 excavation. Confirmation soil samples indicate benzene up to 0.19 mg/kg. Contamination was also encountered at the T-5 excavation with benzene up to 0.17 mg/kg. all of the the soil samples for T-3, T-4, & T-5 were taken 6 to 8 feeet bgs. Groundwater was not encountered at any of the former UST excavations. Grant Lidren
8/16/1993 Release Investigation RELR; Release investigation report review. * Not Assigned
8/16/1993 Underground Storage Tank Site Characterization or Assessment SA1R; Site assessment report review. * Not Assigned
7/7/1995 Underground Storage Tank Site Characterization or Assessment SA1R; Departmental staff reviewed an UST Removal and Site Characterization Report for five UST systems removed at the railroad's Seward facility. Comments were provided to the railroad. * Not Assigned
9/9/1995 Update or Other Action CAPR; Reviewed a remedial action plan. * Not Assigned
9/9/1995 Release Investigation SA2A; Reviewed a phase 2 site assessment report. Action and date atken form KDO excel spreadsheet. * Not Assigned
9/18/1995 Leaking Underground Storage Tank Cleanup Initiated - Petroleum LCAU; LUST corrective action underway. Action taken from KDO excel spreadsheet. * Not Assigned
7/23/2004 Update or Other Action File number assigned and entered into the Fileroom DB and LUST DB. Alyce Hughey
12/21/2004 Update or Other Action File shipped to Linda Nuechterlein in Anchorage for project manager change. Monica English was last staff assigned. Alyce Hughey
2/12/2008 Update or Other Action lattitude and longitude verified by ArcGIS reader Grant Lidren
2/13/2008 Exposure Tracking Model Ranking intial ranking completed Grant Lidren
5/9/2008 Update or Other Action Talked with the City of Seward drinking water division. They indicated that the nearest drinking water well is located a 1/2 mile from site. Grant Lidren
5/1/2009 Site Added to Database A new site has been added to the database Mitzi Read
5/1/2009 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST site created in CSP database for source area 2,000-gal Gasoline UST - Tank 5 (UST#1), 78776 Mitzi Read
5/4/2009 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78776 name: 2,000-gal Gasoline UST - Tank 5 (UST#1) Grant Lidren
5/14/2009 Cleanup Complete Determination Issued The Alaska Department of Environmental Conservation (ADEC), Contaminated Sites Program, has completed review of the environmental records associated with the ARRC Seward Rail Yard Tank 5. Based on the information provided to date, the ADEC has determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment, and no further remedial action will be required as long as the site is in compliance with established institutional controls. Grant Lidren
5/14/2009 Institutional Control Record Established Institutional Controls established and entered into the database. Grant Lidren
5/14/2009 Update or Other Action ADEC received a signed Cleanup Complete – ICs agreement and signature page from ARRC on May 8, 2009. Grant Lidren
6/13/2012 Update or Other Action Staff changed from Grant Lidren to IC Unit. Kristin Thompson
7/9/2012 Institutional Control Compliance Review IC review conducted. Evonne Reese
4/9/2014 Institutional Control Update An IC reminder letter was issued to the responsible party on this date. Kristin Thompson
4/24/2014 Institutional Control Periodic Reporting Responsible party reported no changes in land use or ownership in regards to the former underground storage tank 5 location. Reminder system set to follow-up again in 2019. Kristin Thompson
6/15/2018 Institutional Control Compliance Review IC compliance review conducted. Closure/IC Details updated. Kristin Thompson

Contaminant Information

Name Level Description Media Comments
Benzene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil

Control Type

Type Details
Signed CS Determination


Description Details
Advance approval required to transport soil or groundwater off-site. Standard condition.
Groundwater Use Restrictions Groundwater wells may not be installed on site without ADEC approval.
When Contaminated Soil is Accessible, Remediation Should Occur The soil contamination located under the asphalt at the T5 location is currently inaccessible. When the soil becomes accessible, the soil must be evaluated and contamination addressed in accordance with an ADEC approved work plan.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70) Standard condition.
Other ARRC will report to ADEC every five years to document land use, or report as soon as they become aware of any changes in land ownership and/or use.

Missing Location Data

Because the GIS location data for this site has not been entered, we cannot direct you to its position on the map. Click "Continue" to proceed to the Contaminated Sites Web Map or "Close" to return to the site report.
Continue     Close