| Action Date |
Action |
Description |
DEC Staff |
| 9/1/1995 |
Update or Other Action |
(Old R:Base Action Code = RI - Remedial Investigation). Action date used is the date of the Air Force Relative Risk Evaluation Worksheet, which indicates the site is in the RI phase. |
Former Staff |
| 2/5/1997 |
Site Added to Database |
Site added by Shannon and Wilson. See also Reckey 198931X902504. |
S&W |
| 10/5/1999 |
Update or Other Action |
Drums were removed in 1987. AF anticipates NFRAP. However, they will be updating management action plan 2000. Independent review has not occurred. |
Rielle Markey |
| 4/10/2002 |
Meeting or Teleconference Held |
Staff participated in RAB meeting in Nuiqsut re: Oliktok site. Air Force is planning to complete a magnetic survey and sampling of the dock storage, old dump site, and former landfill area as well as survey out on the sea ice as much as possible. The RAB indicated there was extensive debris in the sea off the DEWline property because in the winter the waste was pushed out onto the ice. |
Ann Farris |
| 10/16/2002 |
Meeting or Teleconference Held |
Staff participated in RAB meeting in Nuiqsut re: Oliktok site. Air Force completed the EM survey and sampling effort at the former dump site locations along the beach. Screening tools indicated fuel was present everywhere, however that may be due to moisture interference. The report is expected in November. Next RAB meeting is January 14th. |
Ann Farris |
| 2/21/2003 |
Update or Other Action |
ADEC reviewed and commented on a Focused Remedial Investigation (RI) Report for the Oliktok Long Range Radar Site. The RI focused on several former dump sites that are experiencing significant erosion. The Air Force completed an interim remedial action in 2001 to temporarily stabilize the dump sites and are now trying to determine an appropriate final remedial action. The RI work delineated the full extent of buried debris so cost of excavation could be more accurately estimated. |
Ann Farris |
| 3/6/2003 |
Site Number Identifier Changed |
Changed the Region from 36 to 31. |
Former Staff |
| 9/4/2003 |
Site Number Identifier Changed |
Changed Workplan from X9 to X1 because it appears there are no hazardous substances above cleanup levels at this site. |
Former Staff |
| 9/17/2003 |
Site Characterization Workplan Approved |
Staff completed review of the Draft Oliktok Long Range Radar Site Remedial Investigation/Feasibility Study Work Plan. This work plan details field work designed to determine if there is mobile contamination existing at the old dump sites that are located along the Beaufort Sea. In addition, the plan proposes an erosion study of the area to determine the cost effectiveness of removing these dump sites versus attempting to stabilize them. |
Ann Farris |
| 8/14/2004 |
Site Characterization Report Approved |
Staff reviewed the final remedial investigation/Feasibility Study for Sites LF001, ST003, and LF002 dated July 2004. A geophysical survey, an erosion study, and sampling were completed. There does not appear to be buried metal debris at the site. The sampling indicates some low level petroleum contamination remaining in the soil, but not of significant quantity or concentration to warrant a remedial action. A proposed plan/decision document for this site is expected in 2005. |
Ann Farris |
| 10/13/2004 |
Meeting or Teleconference Held |
Staff participated in RAB meeting in Nuiqsut re: Oliktok site. Samples were collected at all 10 sites during summer 2004. Results of the 2004 Oliktok Offshore Debris Survey of Navigational Hazards will soon be available in a report. Anticipated Schedule for Oliktok: 2005 Proposed plan and decision document, 2006 Demolition and debris cleanup, 2006 Clean up of any remaining contaminated soils. |
Emily Youcha |
| 7/29/2005 |
GIS Position Updated |
Acquired by topozone. |
Emily Youcha |
| 7/29/2005 |
Meeting or Teleconference Held |
Contaminated Sites staff is working with the Air Force on creating a template for ecological and human health risk assessments covering six sites across the North Slope, including this site. The Air Force determined it needs to conduct base-line risk assessments at these sites prior to making cleanup decisions on them. Developing a template is an effort to make the process more efficient. |
Emily Youcha |
| 8/19/2005 |
Update or Other Action |
Contaminated sites participated in a site visit to the Oliktok station with BLM and Air Force representatives. |
Emily Youcha |
| 12/8/2005 |
Meeting or Teleconference Held |
Staff attended the Restoration Advisory Board meeting in Barrow and provided a summary of the current activites at the site |
Emily Youcha |
| 4/21/2006 |
Proposed Plan |
Staff reviewed and approved the Proposed Plan for nine environmental restoration program sites (LF01, ST03, ST04, SS05, ST06, SS07, ST08, SS09, and SS10) at Oliktok Long Range Radar Station. The Proposed Plan was received on March 29, 2006. |
Emily Youcha |
| 5/26/2006 |
Update or Other Action |
Contaminated Sites staff recently obtained term contractor review of a draft Air Force North Slope Risk Assessment Work Plan (RAWP). Comments were received from the term contractor, and a comment review teleconference was held with the term contractor risk assessor on 5/10/06. The RAWP seeks to develop risk based cleanup levels based on exposure pathways for categories of sites (e.g., garage sites) at Air Force radar stations in the north slope region. The work plan is generally well written, but some of the key items that need clarification are how data gaps will be handled at individual sites; determination of background levels for organics and inorganics; how it will be determined whether a large water body is potentially affected by a site; and how toxicity will be determined for trichloroethylene. |
Emily Youcha |
| 7/11/2006 |
Meeting or Teleconference Held |
Staff performed a site visit to Oliktok with the North Slope Risk Assessment team. No sites were included in the N Slope Risk Assessment template for Oliktok but specific attention was paid to the Garage site. |
Emily Youcha |
| 7/13/2006 |
Update or Other Action |
Staff was informed by the Air Force that the Proposed Plans for Oliktok will be changed due to the upcoming performance-based contract. The Air Force will update the Proposed Plans to include only the no further action (NFA) sites and will also write the Record of Decision for the NFA sites. The performance-based contractor will write the Proposed Plan and Record of Decision for any site with further action, monitoring, or institutional controls. This could change the anticipated remedies for the sites. Any compliance-funded sites will be removed from the Proposed Plans (such as the two landfills, LF01 and LF02) and cleaned up during the performance-based contract for building demolition and debris removal under a DEC approved cleanup workplan. Staff will issue a letter to the Air Force rescinding our agreement with the previous draft Proposed Plans and request additional review of the new Proposed Plan and also request frequent communications with the contractor and the Department of Defense contracting officer during the Proposed Plan and Decision Document process. |
Emily Youcha |
| 10/19/2006 |
CERCLA Proposed Plan |
Approval letter sent by Emily Youcha for Proposed Plan for ST003, ST004, SS005, SS007, ST008. |
Tamar Stephens |
| 6/25/2007 |
Public Notice |
Proposed Plan was presented to the public during a public meeting in Nuiqsut on June 6, 2007. DEC staff Tamar Stephens attended public meeting. |
Tamar Stephens |
| 10/15/2007 |
Exposure Tracking Model Ranking |
Intitial Ranking Complete for Source Area: 71730 (Autogenerated Action) |
|
| 11/26/2007 |
Document, Report, or Work plan Review - other |
Reviewed and sent comments on draft Decision Documents for CERCLA Site ST003 and non-CERCLA Sites ST004, SS005, SS007, and ST008. |
Tamar Stephens |
| 12/11/2007 |
Risk Assessment Report Approved |
ADEC received the Final Risk Evaluation Report – Alaska North Slope Radar Installation Sites on November 6, 2007. This report meets the requirements of the ADEC Contaminated Sites Program Risk Assessment Procedures Manual, adopted by reference in 18 AAC 75.340. An approval letter was sent to Dave Cook, Program Manager HQ PACAF/A7NR, on December 10, 2007
This project identified categories of sites that are common on remote Air Force installations in the North Slope region of Alaska and developed conceptual site models and human health and ecological risk based screening levels for four of these categories: garage sites, fuel storage sites, non-fuel storage sites, and transformer sites. The project developed templates for conducting human health and ecological risk evaluations for these categories and performed a risk evaluation as a test case for one example of each type of site. The final report contains guidance on applying the process to other North Slope region sites. It may be used on a site-specific basis as a tool to assist in assessing potential risks posed by North Slope Air Force installation sites.
|
Tamar Stephens |
| 3/6/2008 |
Document, Report, or Work plan Review - other |
Sent approval letter for Draft Final Decision Documents for CERCLA Site ST003, and for Non-CERCLA Sites ST004, SS005, SS007, and ST008 at Oliktok Long Range Radar Station. |
Tamar Stephens |
| 6/2/2008 |
CERCLA ROD Approved |
Decision document signed by Col. Brent Johnson, USAF, Commander, 611th Air Support Group on May 30 2008 and by John Halverson, DoD Cleanup Lead, Federal Facilities Environmental Restoration, Alaska Department of Environmental Conservation on June 2, 2008. |
Tamar Stephens |
| 11/1/2011 |
Cleanup Complete Determination Issued |
Site closure letter sent to Air Force for Dock Storage Area (ST003); POL Storage (ST004); Diesel Spill Site (SS005); Diesel Storage Area (SS007); and Gasoline Storage Area (ST008). The Dock Storage Area is about one-half acre in size and is located on the beach west of the main installation, between two other sites, the Old Landfill (LF001) and the Dump Site (LF002). The Dock Storage Area was used for storage of drums, including drums of liquid products, prior to 1980. Based on sample results during investigation of this site, no contaminants of concern (COCs) were identified. DRO, PCBs, and chromium were detected above screening levels, but below cleanup levels. Cumulative risk evaluation showed that carcinogenic and non-carcinogenic risks from exposure to these contaminants was below risk management standards, so they were not retained as COCs. Therefore, site conditions are protective of human health and of the environment under of all current and projected future uses, including residential land use. The Decision Document lists the selected remedy as NFA and closure under CERCLA and Alaska State laws and regulations. This site is now closed on the DEC Contaminated Sites database with a cleanup complete determination.
The Decision Document lists the selected remedy as NFA and closure under CERCLA and Alaska State laws and regulations. This site is now closed on the DEC Contaminated Sites database with a cleanup complete determination.
|
Tamar Stephens |
| 11/1/2011 |
Update or Other Action |
Exposure tracking model was updated. |
Tamar Stephens |
