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Site Report: Clear SFS Site 21 DP021

Site Name: Clear SFS Site 21 DP021
Address: Near Bldg. 1, Clear, AK 99704
File Number: 151.38.001
Hazard ID: 1665
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 64.285403
Longitude: -149.168044
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

The Auto Service Pad Spill Area is located in the southwestern part of the Construction Camp near Building 1. The site measures about 1200 square feet and was used as an auto service grease pad, where personnel performed regular maintenance on vehicles and equipment. The site consists of a concrete pad and an areo of contaminated soil associated with the activities at the pad. In 1991, about 250 cubic yards of contaminated soil were excavated and backfilled with clean soil.

Action Information

Action Date Action Description DEC Staff
4/24/1992 Meeting or Teleconference Held ADEC met with USGS and Air Force. Site considered no further action pending ADEC review. Former Staff
5/20/1992 Site Added to Database Petroleum soil contamination. Former Staff
9/1/1992 Interim Removal Action Approved (Old R:Base Action Code = REM - Removal / Excavation). Unknown amount of soil removed and taken to Fire Training Pit liner. Former Staff
9/1/1992 Preliminary Assessment Approved USGS conducted sampling at site where oils and solvents have been spilled over a period of many years. Area approximately 100 square feet. Two soil samples collected from banks of excavation found 219 and 238 ppm lead; 4980 and 6120 ppm TPH. Noland sent comments 12/15/93. Laura Noland
1/19/1994 Site Ranked Using the AHRM Initial ranking. Former Staff
12/5/1994 Update or Other Action (Old R:Base Action Code = SI - Site Investigation). Reviewed Draft Summary Site Investigation Report for IRP sites 17 - 23. Appears that work was conducted without an approved work plan and several problems are evident: POL sampling not conducted at POL contaminated site (Site 17), POL methods do not appear to be approved AK methods, several metals found above MCLs and high levels in soil. Meeting with USAF scheduled 12/13/94 and final report due 3/95. Laura Noland
10/13/2005 Update or Other Action 1994 RI findings/recommendation: no contamination exceeding action levels was detected. No action recommended. Sarah Cunningham
11/8/2005 Update or Other Action Staff reviewed site summaries for 23 IRP sites at Clear. The following comment was sent to the Air Force regarding this site: Site 21 (DP021) is the location of a former auto service grease pad where engine oils and other automotive wastes were spilled. Surface soil contamination was present over approximately 1200 square feet. A removal action in 1991 excavated about 225 cubic yards of contaminated soil that eventually ended up buried in the liner at Site 11. Two samples were taken from the cut wall, TPH was detected at 4980 and 6120 mg/Kg, lead was detected at 219 and 238 mg/Kg. Four borings were placed during the 1994 RI; three were in the area of the excavation and one in an area of stained soils. Benzene was detected in two of 17 samples up to 0.0625 mg/Kg according to Table 21-2. The text states that no organic analytes were detected above proposed action levels (PAL). Please modify this to explain that the PAL listed in the RI was 22.03 mg/Kg but that the DEC cleanup level currently is .002 mg/Kg. The Air Force proposes to conduct a supplemental RI that will be followed by a FS, PP, and ROD as needed. DEC concurs. Debra Caillouet
7/19/2006 Update or Other Action Staff reviewed and provided comment on Draft Work Plan for Remedial Investigations at Sites 11, 13, and 21; and Investigation to Support Feasibility Study Development at Site 22 Debra Caillouet
8/9/2006 Site Characterization Workplan Approved The Final Work Plan for Remedial Investigations at Sites 11, 13, and 21; and Investigation to Support Feasibility Study Development at Site 22 was approved Debra Caillouet
8/10/2007 Update or Other Action The Draft Supplemental Remedial Investigation for Site 21, Clear Air Force Station, July 2007 was reviewed and comments prepared by staff and the risk assessor. Debra Caillouet
10/2/2007 Site Characterization Report Approved draft final ssi report approved Debra Caillouet
10/11/2007 Exposure Tracking Model Ranking Debra Caillouet
12/12/2007 Update or Other Action The final site 21 supplemental ri report was filed. The Air Force is preparing a land use control to be added to the base master plan. when the IC is complete the site can be conditionally closed Debra Caillouet
8/19/2008 Update or Other Action The ADEC received an updated Community Involvement Plan for the Environmental Restoration Program at Clear Air Force Station. Debra Caillouet
1/12/2010 Update or Other Action A draft Proposed Plan for Sites 15, 17, 19, 20, 21, & 23 recommending no further action under CERCLA was reviewed and minor editorial comment sent to the Air Force. Debra Caillouet
4/12/2010 Proposed Plan Final Proposed Plan for Sites 15, 17, 19, 20, 21, and 23, Clear AFS, Alaska, Clear Air Force Station, March 2010 Debra Caillouet
5/21/2010 Document, Report, or Work plan Review - other The final 2009 well decommissioning report documents the proper closure of 55 wells throughout the base. It recommends an additional 20 wells be decommissioned. Debra Caillouet
12/16/2010 CERCLA ROD Approved Final Record of Decision Sites 15, 17, 19, 20, 21, and 23 dated August 2010 signed. Debra Caillouet
12/16/2010 Cleanup Complete Determination Issued per ROD Debra Caillouet

Contaminant Information

Name Level Description Media Comments
TPH Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
Lead - Total < Method 2 Most Stringent Soil

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