Action Date |
Action |
Description |
DEC Staff |
12/18/2001 |
Update or Other Action |
Underground storage tank closure report received. Combined with report for buildings #21 and #111. |
Jeff Conn |
5/23/2002 |
Update or Other Action |
Site Investigation workplan received. |
Jeff Conn |
6/7/2002 |
Site Characterization Workplan Approved |
Combined with Headquarters Powerplant Work Plan. |
Jeff Conn |
12/5/2002 |
Site Added to Database |
Heating oil. |
Jeff Conn |
4/29/2003 |
Meeting or Teleconference Held |
Met with NPS staff to discuss Summer 2003 actions. |
Larry Johnson |
6/6/2003 |
Site Characterization Workplan Approved |
Approved workplan for groundwater well installation and monitoring. |
Larry Johnson |
8/20/2004 |
Update or Other Action |
Groundwater monitoring report approved. |
Anne Marie Palmieri |
1/26/2005 |
Site Ranked Using the AHRM |
Site reranked based on current information. |
Anne Marie Palmieri |
1/26/2005 |
Update or Other Action |
Groundwater monitoring report reviewed and approved. Comments sent to National Park Service. DRO contamination found in MW4 at 1.8 mg/L. |
Anne Marie Palmieri |
10/5/2005 |
Update or Other Action |
Groundwater monitoring report reviewed and approved. Contamination still present in MW-4 at 6.4 mg/l DRO and free product in MW-1 and MW-2. Need for future actions will be discussed with NPS. |
Anne Marie Palmieri |
6/20/2008 |
Update or Other Action |
Workplan approved for groundwater monitoring. |
Janice Wiegers |
6/25/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Janice Wiegers |
5/26/2009 |
Update or Other Action |
Workplan approved for groundwater monitoring at Building 51 and Building 54 |
Melody Debenham |
11/18/2009 |
Update or Other Action |
Received groundwater monitoring report for Building 51 and Building 54 |
Melody Debenham |
5/13/2010 |
Site Characterization Workplan Approved |
Approved the final Headquarters Buildings 51 and 54 2010 Groundwater Monitoring Work Plan. Ongoing investigation and monitoring activities proposed in this work plan include groundwater sampling and conducting a preliminary assessment of vapor intrusion potential at Building 51.
|
Melody Debenham |
12/20/2010 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 74793 heating oil spills. |
Melody Debenham |
3/24/2011 |
Site Characterization Report Approved |
Approved the 2010 groundwater monitoring report for Buildings 51 and 54. Groundwater results show DRO in MW-1 at 4.17 mg/L and MW-2 at 2.24 mg/L. DRO results at MW-4 and MW-5 are below the cleanup level. The preliminary vapor intrusion assessment indicates a very low potential for vapor intrusion at Building 51. |
Melody Debenham |
3/24/2011 |
Conceptual Site Model Submitted |
The 2010 groundwater monitoring report for Buildings 51 and 54 included a conceptual site model. |
Melody Debenham |
5/23/2012 |
Site Visit |
Performed a site visit at the C-Camp Auto Shop site and the C Camp Emergency Services/Fire Management Building site in Denali National Park & Preserve. National Park Service (NPS) staff gave us a tour of the C-Camp sites, sites in the Headquarters area and the Hotel Powerhouse site. At the C-Camp site we observed drilling and soil sampling for the installation of a monitoring well. |
Melody Debenham |
6/25/2014 |
Document, Report, or Work plan Review - other |
Approved letter work plan to decommission monitoring wells MW-1 thru MW-9 in the Denali Headquarters area. |
Melody Debenham |
9/2/2014 |
Document, Report, or Work plan Review - other |
Approved letter report documenting decommissioning MW-1 thru MW-9 at the Building 51, Building 54, and Building 111 headquarters sites. MW-3 could not be located for decommissioning. MW-3 is assumed to be under 3 feet of fill at the RV pad that was constructed in 2009. |
Melody Debenham |
9/30/2014 |
Potentially Responsible Party/State Interest Letter |
Potentially responsible party letter sent to the National Park Service. |
Melody Debenham |
8/31/2017 |
Cleanup Complete Determination Issued |
|
Gretchen Caudill |
8/31/2017 |
Institutional Control Record Established |
Institutional Controls established and entered into the database. |
Gretchen Caudill |
5/30/2018 |
Institutional Control Compliance Review |
IC compliance review conducted. Staff changed from Gretchen Caudill to IC Unit. Closure/IC Details updated to reflect the 2017 Decision Document. Reminder system set to follow-up every three years. |
Kristin Thompson |
8/13/2024 |
Institutional Control Compliance Review |
IC compliance review completed on this date. An IC reminder letter was e-mailed to the landowner. The next review will be in five years’ time. |
Gaige Robinson |