| Action Date |
Action |
Description |
DEC Staff |
| 5/31/1994 |
Update or Other Action |
EPA Site Discovery. |
Bruce Wanstall |
| 1/18/1995 |
Preliminary Assessment Approved |
EPA Preliminary Assessment completed. |
Bruce Wanstall |
| 9/18/2000 |
Preliminary Assessment Approved |
EPA Site Reassessment completed. |
Bruce Wanstall |
| 8/1/2001 |
Site Added to Database |
Metals in soils. |
Bruce Wanstall |
| 8/1/2001 |
Site Ranked Using the AHRM |
Initial ranking. |
Bruce Wanstall |
| 3/20/2003 |
Update or Other Action |
Establishing time lines for activities planned for 2003 and determining what documentation, if any, still is needed for Department records. Sent a request for updated information and schedule for 2003 activities to Linda Stromquist. |
Lynne Bush |
| 5/25/2004 |
Meeting or Teleconference Held |
Meeting with NPS, EPA and ADEC Water Quality Staff concerning Nabesna Mine 303d listing and discussing corrective actions which may change listing status. NPS is proposing to reestablish existing mine drainage around tailings pile to reduce/mitigate impacts from metals leaching from the pile. CS staff supports this work. NPS will perform work this August, sample next spring and determine if additional controls are needed. |
Mike Jaynes |
| 6/14/2004 |
Update or Other Action |
File number assigned 212.38.002 |
Sarah Cunningham |
| 6/16/2004 |
Update or Other Action |
File transferred to Juneau office |
Sarah Cunningham |
| 3/2/2005 |
Update or Other Action |
File now in Fairbanks office. |
Mike Jaynes |
| 3/2/2005 |
Update or Other Action |
Spoke with Linda Stromquist at NPS regarding site status. NPS budget has not come through at this point and additional complications may prevent remedial work this season. Update to come in the next few weeks. NPS has performed assessment and mitigation measures to this point. |
Mike Jaynes |
| 11/21/2005 |
Update or Other Action |
Spoke again with Linda Stromquist. Need to come together on a cooperative strategy to work on site. DEC is proposing to send a letter of interest to the PRP to get some cooperation on a tailings mitigation plan. |
Mike Jaynes |
| 9/20/2007 |
Meeting or Teleconference Held |
Met with NPS project manager Linda Stromquist at the NPS HQ in Anchorage. Linda provided 2007 water quality samples from Cabin Creek, discussed the history of environmental restoration at the site, and the potential for shared NPS and DEC actions to achieve restoration objectives. |
Colin Craven |
| 4/22/2008 |
Meeting or Teleconference Held |
Met with NPS project manager Linda Stromquist at the NPS HQ in Anchorage. Greg Nottingham, based in Boulder, Colorado will be taking over as the NPS PM. The NPS is planning to identify the gaps from the existing investigation data, visit the mine this summer, and see about proceeding with the preferred remedy. |
Colin Craven |
| 10/23/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 73328 name: NPS Nabesna Mine Tailings |
Deborah Williams |
| 4/10/2009 |
Update or Other Action |
Received request for ARARs from State of Alaska. Copied general list of ARARs. Sent request for information on the status of CERCLA process for the site, and a request for information on what the 2007 water quality sampling at Cabin Creek would be used for. Email 4-10-09 |
Fred Vreeman |
| 9/19/2010 |
Document, Report, or Work plan Review - other |
Received August 2009 "Supplemental Site Investigation Report". In phone call with Greg Nottingham DEC informed NPS that the environmental work appeared to have proceeded without an approved workplan. Required data validation reports, laboratory checklists and other required data support documentation was not provided. NPS said that when using their CERCLA authority workplan approval under state laws and regulations is not required. ADEC requested the sampling and analysis plan and data validation reports to support the data provided. |
Fred Vreeman |
| 1/20/2011 |
Document, Report, or Work plan Review - other |
Received draft "Baseline Human Health Risk Assessment". The document claims: "This document fulfills the requirements for the BHHRA as described in the U.S. Environmental Protection Agency’s (EPA's) Guidance on conducting Non-Time-Critical Removal Actions under CERCLA, and as required by the National Contingency Plan (NCP, 1994)." Information submitted was not sufficient to perform a full review of the draft document, and all work described was performed without the workplans required under 18 AAC 75 and the Risk Assessment Procedures Manual (RAPM). Both ADEC and EPA have requested additional information. |
Fred Vreeman |
| 1/20/2011 |
Document, Report, or Work plan Review - other |
Received draft "Screening Level Ecological Risk Assessment". The document states: "Data were provided by The Johnson Company of Montpelier, Vermont, in the form of electronic spreadsheets in Microsoft Excel format. These data are included in the Tables attachment of the Engineering Evaluation/Cost Analysis (EE/CA) Report. Both EPA and ADEC have requested additional information. No workplan approval for the sampling and assessment is on file. The documents submitted did not contain sufficient information to evaluate the data or conclusions. |
Fred Vreeman |
| 5/6/2011 |
Document, Report, or Work plan Review - other |
Received hard copy of Draft "Baseline Human Health Risk Assessment" and Draft "Screening Level Ecological Risk Assessment". Documents are stamped "Draft-Confidential" and appear similar to draft documents received electronically in January. |
Fred Vreeman |
| 2/17/2012 |
Update or Other Action |
DEC advised EPA in a meeting their that site progress at Nabesna appears to be stalled. Revised draft CERCLIS listing information was provided to EPA on 2-16-12. |
Fred Vreeman |
| 9/30/2014 |
Potentially Responsible Party/State Interest Letter |
Potentially responsible party letter sent to the National Park Service. |
Melody Debenham |
| 4/26/2016 |
Meeting or Teleconference Held |
In meeting with NPS Nabesna Mine was specifically discussed. NPS remedial project manager said CERCLA sites like this are handled under a CERCLA program, however the region will now handle it instead of the Denver office. DEC inquired on the status of PRP discussions with private landowner. NPS had no further information. Follow up and communication with private owner is required. |
Fred Vreeman |
| 3/3/2017 |
Meeting or Teleconference Held |
A teleconference was held between DEC, EPA and NPS to discuss the status of Nabesna Mine. Wrangall St. Elias National Park has recently prioritized cleanup at Nabesna Mine and is in the process of identifying the next steps to move forward with cleanup. One challenge is that the current landowner is unknown, as the previous landowner passed away in 2013, and the company that owned the mine was involuntarily dissolved by the State of Alaska. |
Joy Whitsel |
| 6/26/2017 |
Meeting or Teleconference Held |
NPS officials from the Contaminated Sites Program in Denver and from the regional office in Anchorage traveled to Nabesna and Kennicott mines to develop a strategy for investigation and remediation of the mines. DEC participated in a preliminary meeting to share information on the each agency's contaminated sites program and broad vision for the future of the sites. |
Joy Whitsel |
