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Site Report: Kalakaket Creek RRS - Septic Tank Outfall [OT001]

Site Name: Kalakaket Creek RRS - Septic Tank Outfall [OT001]
Address: South Shore of Kalakaket Creek, 22 Miles South of Galena, Galena, AK 99741
File Number: 860.38.008
Hazard ID: 4679
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 64.430806
Longitude: -156.836056
Horizontal Datum:NAD27

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

Multiple contaminants from septic tank outfall, incuding DRO, Antimony, DDE, Dieldrin, PCBs, and Heptachlor Epoxide. PCBs were detected in multiple samples of surface soil in high levels. Dieldrin was detected at 5.8 mg/kg. Heptachlor epoxide was detected at 0.27 mg/kg (flagged data). Traces of DDE were detected below cleanup levels. DRO was detected at levels barely above migration to groundwater cleanup levels. Located on hillside coming down from upper camp, but still at high elevation. More than 150 cubic yards of soil was removed through a series of 8 excavations in 2009. Confirmation samples showed that concentrations were below cleanup levels.

Action Information

Action Date Action Description DEC Staff
7/28/2008 Site Added to Database Site added to the database. Mitzi Read
7/30/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed. Site ranked with Low Potential Exposure for direct contact with subsurface soil, wild or farmed foods ingestion and ecological pathways. Ranked Future Exposure for direct contact with surface soil, and De Minimis Exposure for outdoor air inhalation. Kim DeRuyter
4/21/2010 Update or Other Action The site was reranked based on the 2009 remedial action report. All exposure pathways were either incomplete or de minimis exposure. More than 150 cubic yards of soil was removed through a series of 8 excavations in 2009. Confirmation samples showed that concentrations were below cleanup levels. James Ward
5/24/2010 CERCLA ROD Approved The CERCLA ROD, Petroleum Decision Document, and LF001 Decision Document were signed by DEC and the USAF. Kim DeRuyter
7/25/2010 Cleanup Complete Determination Issued Kim DeRuyter

Contaminant Information

Name Level Description Media Comments
PCBs - Total < Method 2 Most Stringent Soil
Dieldrin < Method 2 Most Stringent Soil
Antimony - Total < Method 2 Most Stringent Soil
Heptachlor epoxide < 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.

There are no documents for this site report.

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