| Action Date |
Action |
Description |
DEC Staff |
| 8/17/2004 |
Site Added to Database |
Petroleum contamination. |
Deborah Williams |
| 8/17/2004 |
Site Ranked Using the AHRM |
DOD ranking is High. |
Deborah Williams |
| 8/18/2004 |
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 SS007 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). No exceedances were found above Method Two Cleanup Levels. Preliminary recommended action is site closure. |
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 |
| 8/22/2005 |
GIS Position Updated |
Staff used Garmin GPS76 for position update on site visit. |
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 |
Petroleum contamination found at this site was not found above Method Two cleanup levels for the Arctic Zone during the 2004 sampling event. Two samples indicate DRO and RRO contamination is slightly above Method One cleanup levels. There is a nearby active diesel storage tank farm that is investigated under the Air Force Compliance Program, and contamination associated with the active tank farm will be covered under a new site identifier if contamination is detected above ADEC soil cleanup levels. |
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: 73631 (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. The Decision Document for SS007 Diesel Storage Area specified that the site would be conditionally closed because DRO contamination remains in the soil at the site above the most stringent levels. During the 2004 Remedial Investigation, the maximum concentration of DRO detected was 771 mg/kg, which exceeds the most stringent level (230 mg/kg); the maximum concentration of RRO detected was 2,500 mg/kg. The Decision Document specifies that site boundaries will be surveyed and the Base Master Plan for Oliktok LRRS will include a statement that ADEC approval is required prior to off-site transportation or disposal of soil from SS007 containing more than 230 mg/kg DRO.
|
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 Diesel Storage Area is located at the main installation on the gravel pad northwest of the Module Train building. This portion of the pad contains water storage tanks, and is adjacent to a diesel storage tank area. Small spills or leaks likely occurred during fuel transfer operations. No reportable spills have been documented in this area. The site was investigated in 1993 and in 2004. Samples from 2004 show that concentrations of DRO and RRO at this site are below the Method 2 arctic zone cleanup levels and only slightly above the Method 1 arctic zone cleanup levels. The maximum detection of DRO was 771 mg/kg, which is below the Method Two arctic zone cleanup level of 12,500. The maximum detection of RRO was 2,500 mg/kg, which is below the Method Two arctic zone cleanup level of 13,700 mg/kg. The Decision Document lists the selected remedy as NFA and closure under CERCLA and conditional closure under State of Alaska 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 73631 Diesel Area SS07. |
Tamar Stephens |
