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Site Report: ARRC Broad Pass Railroad Station


Site Name: ARRC Broad Pass Railroad Station
Address: MP 193 Parks Highway; ARRC MP 304.5; ~15 mi. SW of Cantwell, Cantwell, AK 99729
File Number: 150.38.042
Hazard ID: 25593
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 63.235530
Longitude: -149.268670
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

In 2009, during a drainage ditch sampling effort for the ARRC - Broad Pass Railroad Station (HAZID 22938), a previously unknown 500-gallon diesel heating oil underground storage tank (UST) was discovered. The UST was found to be partially open and submerged with water. In 2010, the UST was purged of water and removed from the site. Three soil samples collected 6 inches below the former UST, at 3.75 ft. bgs, contained benzene up to 0.387 mg/kg. The excavation was then backfilled with stockpiled soils and clean fill to bring to grade.

Action Information

Action Date Action Description DEC Staff
11/17/2010 Report or Workplan Review - Other On this date ADEC received UST Removal Report Broad Pass Section House submitted by Clarus and dated October 29, 2010. Grant Lidren
12/15/2010 Site Added to Database A new site has been added to the database Mitzi Read
12/15/2010 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78996 name: 500-Gallon Heating Oil UST Mitzi Read
1/20/2011 Cleanup Complete Determination Issued The Alaska Department of Environmental Conservation (ADEC), Contaminated Sites Program, has completed a review of the environmental records associated with the ARRC Broad Pass Railroad Station. Based on the information provided to date and the administrative record, 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
1/20/2011 Institutional Control Record Established Institutional Controls established and entered into the database. Grant Lidren
1/26/2011 Update or Other Action On this date, ADEC recieved signed Cleanup Complete-ICs Agreement and Signature Page. Grant Lidren
6/13/2012 Update or Other Action Staff changed from Grant Lidren to IC Unit. Kristin Brown
6/13/2012 Institutional Control Compliance Review IC review conducted and reminder system set-up for 2016 follow-up with responsible party. Kristin Brown
1/11/2016 Institutional Control Compliance Review IC compliance review conducted and IC reminder letter issued to the responsible party on this date. Reminder system set to follow-up in 2021. Kristin Brown
1/13/2016 Institutional Control Update Received verification from the property owner that land use has not changed. Evonne Reese

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

Requirements

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

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.
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