| 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 samples will be collected at SS09 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). GRO and DRO soil contamination exists above Method One cleanup levels. Preliminary recommended action is excavation and thermal treatment of gravel. |
Emily Youcha |
| 7/29/2005 |
GIS Position Updated |
Obtained GPS coordinat from Topozone. |
Emily Youcha |
| 7/29/2005 |
Meeting or Teleconference Held |
Staff participated in a peer review team meeting regarding this site. The peer review team does not concur with the removal of DRO and GRO contaminated soilswith concentrations above Method One cleanup levels, but with concentrations below the Method Two Risk 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 |
| 2/16/2006 |
Site Characterization Report Approved |
Staff reviewed and approved the RI/FS for this site. The diesel tanks are located to the east of the main installation. GRO and DRO concentrations in the soil exceed Method One soil cleanup levels, but do not exceed Method Two soil cleanup levels for the Arctic Zone. Total Xylenes were detected, but were below Method Two soil cleanup levels. ADEC concurs with the site characterization efforts as applied to the current exposure scenario. The site is currently located approximately 150 ft from the beach; however, it is thought that the shoreline most susceptible to erosion will likely be stabilized due to the construction of a new coastal gravel pad at Oliktok Point for oil production and exploration activities. |
Emily Youcha |
| 2/16/2006 |
Update or Other Action |
One ADEC concern is the reuse or disturbance of the gravel pad in this area due to future pad construction. Petroleum-contaminated gravel above Method One cleanup levels may not be reused without ADEC approval. The Air Force must notify ADEC before there is any removal and transport of the contaminated soil above Method One soil cleanup levels. However, if this extended gravel pad is not constructed and erosion in this area occurs, ADEC has concerns that there may be a potential for water quality violations as the soil erodes. ADEC may require monitoring for sheening and erosion in this area. Please note that the Air Force must establish and maintain an institutional control on sites where petroleum-contaminated soil remains above the most stringent statewide soil cleanup levels. |
Emily Youcha |
| 2/28/2006 |
Site Characterization Report Approved |
The diesel tanks are located to the east of the main installation. GRO and DRO concentrations in the soil exceed Method One soil cleanup levels, but do not exceed Method Two soil cleanup levels for the Arctic Zone. Total Xylenes were detected, but were below Method Two soil cleanup levels. ADEC concurs with the site characterization efforts as applied to the current exposure scenario. The site is currently located approximately 150 ft from the beach; however, it is thought that the shoreline most susceptible to erosion will likely be stabilized due to the construction of a new coastal gravel pad at Oliktok Point for oil production and exploration activities. One ADEC concern is the reuse or disturbance of the gravel pad in this area due to future pad construction. Petroleum-contaminated gravel above Method One cleanup levels may not be reused without ADEC approval. If this extended gravel pad is not constructed and erosion in this area occurs, ADEC has concerns that there may be a potential for water quality violations as the soil erodes. ADEC recommends visual monitoring and sampling for petroleum contamination, sheening, and erosion in this area. |
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 |
| 10/15/2007 |
Exposure Tracking Model Ranking |
Intitial Ranking Complete for Source Area: 73630 (Autogenerated Action) |
|
| 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 |
| 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 |
| 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 |
| 3/19/2011 |
Meeting or Teleconference Held |
The Air Force presented the Proposed Plan for sites LF001, LF002, SS010, LF001a, ST006, SS009a, and SS009b in a public meeting in Nuiqsut on March 29, 2011. Tamar Stephens from ADEC attended. The public comment period is March 29 through April 29, 2011. |
Tamar Stephens |
| 3/31/2011 |
Spill Transferred from Prevention Preparedness and Response Program |
Spill transferred by PERP staff John Ebel. Spill no. 10399907105; spill date = 3/12/10; substance = petroleum; quantity = unknown; PERP file no. 300.02.446. Description: ENI Petroleum discovered soil contamination at Oliktok LRRS during a pipeline construction project. The pipeline was buried in a trench (10'W x 10'D). Soil removed from the trench was sent to ConocoPhillips' 1H contaminated soil storage cell and clean soil was used to bury the pipeline. |
Mitzi Read |
| 4/28/2011 |
CERCLA Proposed Plan |
DEC sent approval letter for final Proposed Plan for LF001, LF002, SS010, LF001a, ST006, SS009a, and SS009b. DEC previously reviewed and commented on the draft Proposed Plan and received the final Proposed Plan on March 22, 2011. The Proposed Plan was presented in a public meeting in Nuiqsut on March 29, 2011, with a 30-day public comment period from March 29 to April 29, 2011. This site is referred to in the Proposed Plan as "SS009a - Diesel Storage Tanks Site." This site is a former bulk fuel storage area. Soil samples showed petroleum at this site was below the Method 2 cleanup level. The Proposed Plan recommends no further action. |
Tamar Stephens |
| 11/16/2012 |
CERCLA ROD Approved |
A Record of Decision (ROD) was signed by John Halverson, Environmental Program Manager, Federal Facilities Section, Contaminated Sites Program, Alaska Department of Environmental Conservation, on 11/16/12 and by U.S. Air Force Colonel Robyn Burk, U.S. Air Force, Commander, 611th Air Support Group, on 11/20/12 for seven sites at the Oliktok Long Range Radar Station: LF001 (Old Landfill), LF002 (Dump Site), SS010 (Garage Site), ST006 (Module Train Spill Sites), SS009a (Diesel Storage Tank Site), SS009b (Fuel Tank Farm Site), and LF001a (Soil Cell). This site consists of a pad that formerly supported two 65,000 gallon fuel tanks. The tanks, underlying concrete tank pads, and pipelines have been removed. Soil samples were analyzed for BTEX, GRO, DRO, RRO, and PAHs during past investigations. No constituents were found above method two arctic zone cleanup levels; therefore the site is suitable for unrestricted use and the selected remedy is no further action (cleanup complete). |
Tamar Stephens |
| 2/6/2013 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 73630 SS09a Diesel Tanks. |
Tamar Stephens |
| 2/21/2013 |
Cleanup Complete Determination Issued |
By law, DEC is required to recover expenses incurred during cleanup, including staff oversight time. Current and former landowners may be liable for state cleanup expenditures.
A Record of Decision (ROD) was signed by John Halverson, Environmental Program Manager, Federal Facilities Section, Contaminated Sites Program, Alaska Department of Environmental Conservation, on 11/16/12 and by U.S. Air Force Colonel Robyn Burk, U.S. Air Force, Commander, 611th Air Support Group, on 11/20/12 for seven sites at the Oliktok Long Range Radar Station: LF001 (Old Landfill), LF002 (Dump Site), SS010 (Garage Site), ST006 (Module Train Spill Sites), SS009a (Diesel Storage Tank Site), SS009b (Fuel Tank Farm Site), and LF001a (Soil Cell). This site consists of a pad that formerly supported two 65,000 gallon fuel tanks. The tanks, underlying concrete tank pads, and pipelines have been removed. Soil samples were analyzed for BTEX, GRO, DRO, RRO, and PAHs during past investigations. No constituents were found above method two arctic zone cleanup levels; therefore the site is suitable for unrestricted use and the selected remedy is no further action (cleanup complete). |
Tamar Stephens |
