| 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 as of 8-1-97. Fuels are PCOC. |
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 |
| 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 ST008 and analyzed for petroleum constituents. Field work is 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). Sampling results indicate contamination exceeds Method One cleanup levels and almost exceed Method Two Cleanup levels. Preliminary recommended action is removing DRO contamination greater than 3,000 mg/kg. |
Emily Youcha |
| 7/29/2005 |
GIS Position Updated |
Acquired from Topozone. |
Emily Youcha |
| 7/29/2005 |
Meeting or Teleconference Held |
Staff particpated in a meeting with the Air Force regarding this site. The peer review team did not concur with the removal of GRO/DRO contaminated soil with concentrations above Method One cleanup levels, but below Method Two, health-based cleanup levels. |
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 located north of the garage and is a former gasoline storage area. There are two separate areas of contamination at this site, one is located on the northern edge of the pad, and the other is located at the North Storage Pad, at an active gasoline above ground storage tank. DRO, GRO, and RRO exist at both areas above Method One cleanup levels on the gravel pad. One sample located the edge of the gravel pad, north of the garage, and one sample in the wetland had naphthalene and phenanthrene above the National Oceanic and Atmospheric Administration (NOAA) Screening Quick Reference Tables (SQUIRT) screening criteria for sediments. All detected soil contamination was below Method Two soil cleanup levels for Arctic Zone. |
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: 71728 (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 Gasoline Storage Area is located directly northwest of the Oliktok LRRS garage on two gravel pads. The garage is on the southern of these two pads. The edges of the pads have not been well maintained and are sloughing into the tundra that lies between the pads. The northeastern part of the southern pad formerly contained two above ground storage tanks for diesel and currently contains one above ground storage tank for gasoline. A number of temporary structures were present on the northern pad during the 1970’s, and were removed before the 1990’s. This site was investigated in 1993 and in 2004 and found to be impacted by petroleum contamination in the subsurface gravel. The maximum detections were as follows.
• DRO (max) = 11,600 mg/kg, which is below the Method Two arctic zone cleanup level of 12,500 mg/kg.
• GRO (max) – 905 mg/kg, which is below the Method Two arctic zone cleanup level of 1,400 mg/kg.
• RRO (max) = 13,100 mg/kg, which is below the Method Two arctic zone cleanup level of 13,700 mg/kg.
The Decision Document states that no remedy was proposed under CERCLA because releases were only petroleum. The selected remedy under state law was conditional closure. 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 71728 Gas Storage ST008. |
Tamar Stephens |
