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Site Report: Cape Sabine Dewline / DERP

Site Name: Cape Sabine Dewline / DERP
Address: 53 Miles SW of Point Lay, Point Lay, AK 99759
File Number: 375.38.001
Hazard ID: 843
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 69.023967
Longitude: -163.852449
Horizontal Datum:WGS84

We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.

Problems/Comments

Site operated from approximately 1957 to 1965. Contaminants include high levels of PCBs (2000 ppb), pesticides, lead, TCE, BTEX, petroleum products. Surface water samples also indicate various source contamination. More comprehensive sampling is needed before extent of contamination is known. EPA ID# AK5141190103 CERCLIS site. DERP reports for this site by Dowl Engineers: 4/26/88 and 1990. DERP-FUD. Former USAF site. (rpltr3.1) According to the FUDS Site Summary dated 2/21/96, restoration includes 4 (20,000 gal) and 9 (300 to 500 gal) oil storage tanks, a fuel pumping station, 1,300+ 55 gallon POL drums, and a 240-foot unmarked tower on 200 acres. Total estimated volume of debris is 8,000 cubic yards. There are 10,000-20,000 cubic yards of contaminated gravel fill, 0.5-acre of POL contaminated soil, and POL contaminated surface water. Site is also listed on Navy Relative Risk Evaluation Worksheet dated 10/18/95. The worksheet indicates that there is contaminated runoff from the main camp area into the creek, thus affecting fish population and drinking water source for wildlife in the area; also states that there is potential for human exposure. The site is assigned a HIGH site rank on the Navy Relative Risk Evaluation Worksheet. Last staff assigned were Cutler and Stephens.

Action Information

Action Date Action Description DEC Staff
9/1/1985 Preliminary Assessment Approved COE identified suspected areas of contamination and conducted initial sampling. The samples were not tested for VOCs until 2/86, therefore results are questionable. Former Staff
9/1/1987 Update or Other Action (Old R:Base Action Code = FI - Field Inspection (General)). Brief site inspection to determine if visually contaminated soil and water were present. Over 300 drums were found at the site. Former Staff
8/8/1989 Preliminary Assessment Approved (Old R:Base Action Code = SI - Site Investigation). Exact date of report unknown. Conducted screen sampling at site and recommended comprehensive sampling be conducted. Former Staff
11/21/1990 Site Ranked Using the AHRM Initial ranking. Former Staff
10/3/1991 Update or Other Action (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Remedial plans reviewed. Written comments returned to U.S. Army. Former Staff
6/22/1992 Update or Other Action (Old R:Base Action Code = SI - Site Investigation). Staff reviewed Pre-Design Final Report dated March, 1992. Report contains previous sampling data and defines regulatory levels for site contaminants. Laura Noland
6/24/1992 Meeting or Teleconference Held Met with Corps of Engineers and USF&WS to establish cleanup levels and cleanup methods for summer of 1993 work. The Corps plan to conduct remediation as they continue to define extend of contamination. Laura Noland
9/8/1992 Update or Other Action (Old R:Base Action Code = RPL2 - Site Information Request Letter). ADEC staff sent PRP-CS Database Notification letter to RP requesting update and more environmental information concerning contaminated site. Jim Levine\COE called 10-5-92 and responded by returning updated DECRPTs. Jeff Peterson
3/26/1993 Update or Other Action (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Staff received remedial action workplan which describes a removal action to take place. Site would not obtain clean closure with this proposed action. Rielle Markey
4/28/1993 Update or Other Action (Old R:Base Action Code = CORR - Correspondence (General)). Staff sent ADEC proposed action levels for cleanup at site to E&E's Brian Miskel. Marcus Ortelee
5/13/1993 Update or Other Action (Old R:Base Action Code = CORR - Correspondence (General)). ADEC staff sent a letter to Gail Braten of COE, on action levels for soil and gravel pad cleanup levels. ADEC and USFWS worked together to establish levels based on health and ecological criteria. Marcus Ortelee
8/27/1993 Update or Other Action Bidding documents received. Bob Couch
1/25/1994 Site Added to Database Contaminants include PCBs, pesticides, lead, TCE, BTEX, and petroleum products. Former Staff
2/15/1994 Update or Other Action (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Received Contractor Quality Control Plan - Removal Action - Cape Sabine Dew Line Station North slope Borough, Alaska Contract Number DACA85-94-C-0001. Bob Couch
2/23/1994 Meeting or Teleconference Held Attended pre-construction conference at COE resident engineer office. Bob Couch
11/29/1994 Site Ranked Using the AHRM Reranked. Former Staff
12/23/1994 Preliminary Assessment Approved Received Draft Preliminary assessment (Appendix D) for Cape Sabine/Pt. McIntyre. Navy - responsible party, COE working for Navy. Funding is DERA. Rielle Markey
3/18/1997 Update or Other Action Site updated by Shannon and Wilson, based on FUDS Site Summary dated 2/21/96. S&W
6/3/1998 Site Characterization Workplan Approved Approval letter sent. Sampling will complete data gaps from previous investigations, and provide data to support a risk assessment. Sampling to be conducted summer of 1998. Tamar Stephens
6/3/1998 Update or Other Action Site has been determined to be a Navy site, not a FUDS. Date of this determination not known. Navy is taking responsibility for environmental work henceforth. Tamar Stephens
2/26/1999 Update or Other Action Approved risk assessment work plan; approval letter sent to Navy. Tamar Stephens
6/17/1999 Site Characterization Report Approved Approval letter sent. Report found GRO, DRO, RRO, PCBs, metals in soil; VOCs, PAHs, metals in tundra pond sediments; no surface water contamination. Tamar Stephens
7/27/1999 Update or Other Action Received draft Human Health and Ecological Risk Assessment. Copy sent for term contractor review. Tamar Stephens
9/14/1999 Update or Other Action Provisional approval of Risk Assessment; comments sent to Navy regarding a number of points that need clarification. Report found no unacceptable human health risk (assumes occasional visitor); some risk to insectivorous mammals and birds. Tamar Stephens
9/21/1999 Meeting or Teleconference Held Stephens participated in risk assessment comment resolution teleconference with Navy and their contractor. All ADEC comments accepted. Tamar Stephens
12/29/1999 Risk Assessment Report Approved Risk Assessment Approval Letter Sent. Action added by Sarah Riddle. Tamar Stephens
2/15/2000 Update or Other Action Review of Draft Outline – Management Plan for Site Closure, DEW Line Station, Cape Sabine, Alaska. Action added by Sarah Riddle. Tamar Stephens
8/1/2000 Update or Other Action Review of draft Management Plan for Site Closure – Former DEW Line Station, Cape Sabine, Alaska. Action added by Sarah Riddle. Tamar Stephens
10/2/2000 Update or Other Action Approval of Management Plan for Site Closure – Former DEW Line Station, Cape Sabine, Alaska, September 2000. Action added by Sarah Riddle. Tamar Stephens
10/20/2000 Site Number Identifier Changed Changed Region from 36 to 32. Former Staff
7/3/2003 Cleanup Plan Approved Sent approval letter for work plan. Work will consist of excavation and off-site disposal of approximately 640 cubic yards of soil with DRO, RRO or PCB contamination. Cleanup will also include demolition of all structures and off-site disposal of all demolition debris and other site debris. Tamar Stephens
7/21/2003 Cleanup Level(s) Approved Cleanup levels were approved with signing of Record of Decision. (For details, see entry for Record of Decision Signed .) Tamar Stephens
7/21/2003 Record of Decision DEC signed ROD 7/16/03; Navy signed 7/21/03. Contaminants of concern are DRO up to 56,000 mg/kg; RRO up to 44,000 mg/kg; PCBs up to 60 mg/kg. ROD specifies cleanup to residential levels. Risk assessment supports using method 2 cleanup levels for the arctic region. Cleanup levels are DRO - 12,500 mg/kg; RRO - 13,700 mg/kg; PCBs - 1 mg/kg. Contaminated soil will be excavated for off-site disposal; estimated total soil volume = approximately 640 cubic yards. Tamar Stephens
2/19/2004 Update or Other Action Reviewed and sent comments on draft Closure Report for work completed during summer of 2003. All work was successfully completed. Contaminated soil was removed, abandoned structures were demolished, and all debris was removed from the site. Tamar Stephens
1/31/2005 Site Closure Approved Staff reviewed and approved Final Closure Report (Demolition and Environmental Cleanup, Cape Sabine, Alaska, September 15, 2004) and sent closure letter on 1/31/05. DEC received closure report on September 17, 2004. Closure report documents that the cleanup met requirements established in the decision document. A total of 292 cubic yards of petroleum and/pr PCB-contaminated soil was excavated from eight locations at Cape Sabine and shipped off site for disposal. Confirmation sampling shows that method 2 arctic zone cleanup levels were met at all locations. Project included demolition of all structures, pipeline removal, asbestos abatement, demolition of existing structures (water tank, pump house, warehouse, composite building, and radio tower), removal of debris and drums, and backfill of soil excavation areas. Tamar Stephens

Contaminant Information

Name Level Description Media Comments
For more information about this site, contact DEC at (907) 465-5390.

Control Type

Type Details
No ICs Required

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.

No associated sites were found.

Missing Location Data

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State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
Fax: 907-465-5245
TDD: 800-770-8973
Physical Location: 410 Willoughby