| Action Date |
Action |
Description |
DEC Staff |
| 9/2/1995 |
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 |
AF anticipates completing an RI/FS at this site as of 8-1-97. Diesel Fuel Arctic is PCOC. |
Rielle Markey |
| 10/15/1999 |
Update or Other Action |
No independent review of this site has occurred. |
Rielle Markey |
| 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 |
| 3/6/2003 |
Site Number Identifier Changed |
Changed the Region from 36 to 31. |
Former Staff |
| 3/6/2003 |
Site Number Identifier Changed |
Changed the Region from 36 to 31. |
Former Staff |
| 8/14/2004 |
Site Characterization Workplan Approved |
Staff received the final version of the remedial investigation/feasibility study quality program plan for 8 sites, dated July 2004. Soil, sediment, and surface water samples will be collected at SS05 and analyzed for petroleum constituents. Field work scheduled for August 2004. |
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 |
| 2/16/2005 |
Meeting or Teleconference Held |
Staff participated in a meeting with the 611th Air Force and their contractor to discuss the 2005 Remedial Investigation/Feasibilty Study (RI/FS). No exceedances were found above Method Two Cleanup Levels. Preliminary recommended action is site closure. |
Emily Youcha |
| 7/29/2005 |
GIS Position Updated |
Position acquired from 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 |
| 2/28/2006 |
Site Characterization Report Approved |
This site is the reported location of a 1978 300-gallon diesel spill, adjacent to the Hanger. During the 2004 remedial investigation, GRO and DRO concentrations in soil samples were found above Method One soil cleanup standards, but below Method two Soil cleanup standards. Contamination does not appear to be impacting adjacent surface-water bodies. |
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 |
| 10/16/2006 |
Proposed Plan |
Staff received the Draft Final Proposed Plan for ST004, SS005, SS007, and SS008 for Oliktok on Sept 21, 2006. Manager concurred with plan for No Further Action. Staff should receive a final shortly and can submit a new concurrence letter. |
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: 71727 (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 |
| 9/14/2010 |
Site Visit |
Contaminated sites staff Tamar Stephens and USAF remedial project manager Robert Johnston conducted a site visit and inspection. |
Tamar Stephens |
| 11/1/2011 |
Cleanup Complete Determination Issued |
Cleanup Complete Determination
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 Diesel Spill site is located on the gravel pad on the eastern side of the hangar building. The site was investigated in 1993 and in 2004. Sampling performed in 2004 showed DRO, GRO, and total xylenes were present above screening levels, but below Method Two arctic zone cleanup levels. Maximum detections were as follows.
• DRO (max) = 3,950 mg/kg which is below the Method Two arctic zone cleanup level of 12,500 mg/kg.
• GRO (max) = 418 mg/kg, which is below the Method Two arctic zone cleanup level of 1,400 mg/kg.
• Total xylenes (max) = 19.19 mg/kg, which is below the Method Two arctic zone cleanup level of 81 mg/kg.
The Decision Document lists the selected remedy as NFA under CERCLA and conditional closure under Alaska State laws and regulations. No contaminants exceeded the Method Two cleanup levels; therefore, site conditions are protective of human health and of the environment under of all current and projected future uses, including residential land use. This site is now closed on the DEC Contaminated Sites database with a cleanup complete determination
|
Tamar Stephens |
| 11/1/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 71727 Diesel Spill SS05. |
Tamar Stephens |
