Action Date |
Action |
Description |
DEC Staff |
6/23/1994 |
Document, Report, or Work plan Review - other |
Date of DEC letter stating that the gross contamination was removed and treated. Requests samples be collected and following that data collection, the spill response will be determined to be adequate. The intent was that the contamination be addressed when the tank is taken out of service. |
Keather McLoone |
9/20/1994 |
Document, Report, or Work plan Review - other |
Date of report for results of soil sampling and analysis. This release was contained over a geomembrane liner, but further investigation regarding integrity of liner was not conducted. However, standing water over the liner suggests that it remained intact. |
Keather McLoone |
11/27/1994 |
Update or Other Action |
Date of letter from DEC stating that site work, including remediation, might be postponed until Tank 209 was taken out of service. |
Keather McLoone |
12/28/2000 |
Site Added to Database |
Crude oil. |
Bruce Wanstall |
1/10/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Keather McLoone |
11/7/2011 |
Update or Other Action |
Email to Alyeska asking to confirm whether Tank 209 is still in service in preparation for writing a decision letter for this site if it is still in service. |
Keather McLoone |
11/13/2012 |
Meeting or Teleconference Held |
Met with Alyeska (Jan Shifflett) and SLR International (Scott Rose) about conducting additional characterization in 2013. Given the age of the release event (approx. 19 years ago), small estimated volume of crude that was left in place, and inaccessibility of remaining petroleum.. |
Richard Bernhardt |
5/24/2013 |
Site Characterization Workplan Approved |
Received and approved a work plan to collect soil samples in the area affected by the 1994 release. |
Richard Bernhardt |
1/2/2014 |
Site Characterization Report Approved |
On this date, ADEC received the 2013 Soil Sampling Report for PS 10 Tank 209 submitted by SLR dated December 2013. Two test pits were advanced in the approximate location of the 1994 soil samples T209-2 and T209-1 and five soil samples were collected. Three soil samples collected from visibly contaminated soil encountered at 0.7 feet bgs contained DRO up to 5,340 mg/kg and RRO up to 16,000 mg/kg. Two soil samples collected from the GW interface above the liner at 1.7 feet bgs contained DRO up to 59 mg/kg and RRO up to 5,340 mg/kg. Groundwater with sheen and accumulating crude oil droplets in the test pits were noted. |
Grant Lidren |
5/7/2014 |
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 Alyeska PS 10 Tank 209. 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. No further remedial action will be required as long as the site is in compliance with established institutional controls. |
Grant Lidren |
5/7/2014 |
Institutional Control Record Established |
Institutional Controls established and entered into the database. |
Grant Lidren |
5/9/2014 |
Update or Other Action |
On this date, ADEC received the signed CC-IC agreement from Alyeska. |
Grant Lidren |
11/23/2015 |
Institutional Control Compliance Review |
IC compliance review conducted, staff name changed from Lidren to IC Unit, and reminder system set to review the site record in May 2019. |
Nathan Maxwell |
11/20/2017 |
Meeting or Teleconference Held |
Attended a meeting regarding the elimination of non-essential infrastructure at Pump Station 10. There are five Alyeska sites located at this pump station that have institutional controls and this site is one of them. Construction is in the planning stages and will not begin until 2019. The foundations for the buildings on the pad will remain in place so the residual contamination that may remain underneath the foundations will remain in place. Because of this, the project is not planning on addressing the known contaminated site issues. Verifying this detail should be included in the next IC compliance review.
|
Evonne Reese |
11/20/2017 |
Meeting or Teleconference Held |
Meeting with Alyeska on this date. Tank 209 will be removed in 2019 as part of the PS 10 Elimination of non-essential infrastructure. |
Grant Lidren |
6/18/2018 |
Institutional Control Compliance Review |
IC compliance review conducted. Closure/IC Details updated. |
Kristin Thompson |
3/11/2019 |
Institutional Control Compliance Review |
An IC compliance verification letter from Alyeska on this date confirming that all IC requirements are being complied with. The next IC review will be in 5 years time. |
Evonne Reese |
2/6/2020 |
Institutional Control Update |
Received confirmation from Alyeska that the 2019 work to decommission this pump station has been completed. Most of the buildings, and structures (such as the tank farm tanks), have been removed but land use at the site has not changed. Alyeska still has some infrastructure on site and will maintain security around the property. There are no changes to the ICs on the property. |
Evonne Reese |
9/25/2024 |
Institutional Control Compliance Review |
The landowner responded to the IC reminder letter and provided a written confirmation that land use has not changed |
Gaige Robinson |