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Site Report: UAF Northwest Campus Parking

Site Name: UAF Northwest Campus Parking
Address: East Front Street, Between Moore Way and Campbell Way, S of the Main UAF Bldg; West of the UA Library, Nome, AK 99762
File Number: 400.38.046
Hazard ID: 25486
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 64.496200
Longitude: -165.396270
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

During a geotechnical study performed by Shannon and Wilson in 2008 to develop geotechnical design recommendations for new foundations for the main university building and the library, seven borings were drilled and samples collected. Soil borings were screened with a photo ionization detector (PID) and laboratory confirmation samples collected from areas with highest PID. Potential surface soil contamination based on PID reading within the parking lot area. Select samples were analyzed for gasoline range (GRO), diesel range (DRO), and residual range organics (RRO), and benzene, toluene, ethylbenzene, and xylenes (BTEX). RRO ranged from 961 to 3,390 parts per million (ppm). DRO concentrations ranged from 98.7 to 1,140 ppm. GRO and BTEX were below DEC cleanup levels. Highest contamination was found at a depth of 5 to 6.5 feet. Total depth of borings was between 35 and 75 feet below ground surface. Permafrost estimated at approximately 9 to 50 feet. Water table after boring completion reported as 40 to 50 feet. No groundwater was encountered on boring that was 35 feet deep.

Action Information

Action Date Action Description DEC Staff
1/15/2010 Site Added to Database A new site has been added to the database Mitzi Read
1/15/2010 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78846 name: Petroleum - Unknown Source Mitzi Read
9/11/2013 Site Visit DEC conducted a site visit to view site features. Buildings have been moved since the property became a contaminated site; all buildings are on pilings in their new locations. Location of contamination is not obvious, but is in the parking lot. Drums containing various materials were noticed at the site, however it appears they are being used in ongoing construction activities. Robert Burgess
5/25/2016 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78846 Petroleum - Unknown Source. Robert Burgess
6/27/2019 Cleanup Complete Determination Issued DEC has issued a cleanup complete determination. Arctic zone cleanup levels were approved due to the site being underlain by continuous permafrost. Remaining contamination is below approved cleanup levels. Megan Roberts

Contaminant Information

Name Level Description Media Comments
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
RRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil

Control Type

Type Details
No ICs Required

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)
Hazard ID Site Name File Number
4207 East Front Street Contamination - Nome 400.38.037
25485 UAF Northwest Campus Heating Oil Tank 400.38.045

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