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Site Report: ADFG Hidden Falls Hatchery

Site Name: ADFG Hidden Falls Hatchery
Address: Baranof Island-East Side, Kasnyku Bay, Sitka, AK 99835
File Number: 1525.38.001
Hazard ID: 22
Status: Cleanup Complete
Staff: ,
Latitude: 57.217202
Longitude: -134.872718
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.


Historical fuel spillage events from fill system for two 10,000-gallon aboveground storage tanks (ASTs) and underground storage (UST) day tanks. A 1980 100-gallon diesel spill percolated through shot rock fill to the nearby lagoon where sorbent pads were used to recover some of the fuel. Product seepage and sheening on the lagoon continued for several years, generally following a large rainfall. Closure-in-place of two regulated Leaking Underground Storage Tanks (LUSTs) 12/1998. Facility ID# 3066, LUST event ID# 2752. ADL/LAS 21284, leased to ADF&G.

Action Information

Action Date Action Description DEC Staff
2/15/2002 Site Added to Database Petroleum release. Bruce Wanstall
2/15/2002 Site Ranked Using the AHRM Preliminary ranking. Tongass National Forest remote waterfront location. Bruce Wanstall
3/7/2002 Update or Other Action Project tickler update - email to Pikul asking if he thought this should be folded into the state MOU project. Marianne McNair from ADFG sent a Phase I environmental audit. Additional investigation as a CS may be in order. Sent to Site Intake for review. Printed the audit report for file. Letter to Marianne McNair (ADFG) on file at G:\SPAR\Spar-Contaminated Sites\SITES\Hidden Falls Hatchery.doc. Bill Janes
3/19/2002 Update or Other Action Project tickler update - Sent Carnahan an email asking if he knows how DOT gets its funding to clean up sites and whether the LUST aspect of this project could be folded into the MOA project. Bill Janes
7/13/2006 Update or Other Action While doing site research for the ETM ranking project on ADOTPF - Hidden Falls Hatchery (1525.26.025) I found a UST Closure Assessment Report Review for ADOTPF which was completed for numerous ADOTPF sites in the state and this hatchery was included in this report. In this report it mentioned a spill of 40 gallons of diesel from an 4,000-gallon AST sometime between July and October in 1999. Contamianted soil (100 sq ft by 4.5 feet deep) was excavated and taken to Juneau for thermal remediation. The excavation pit samples contained 140 ppm GRO, 10,000 ppm DRO and 0.155 ppm benzene. Samples from the stockpile contained 332 ppm GRO, 12,600 ppm DRO and 0.08 ppm benzene. All of the contaminated soil was not excavated due to the fuel island instability. For more information see the site file. Evonne Reese
2/25/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed. Bill Janes
7/1/2010 Update or Other Action File transferred to Anchorage 1/27/2010 Susan Carberry
6/29/2011 Update or Other Action Transferred file from Todd Blessing in Anchorage to Sally Schlichting in Juneau on 6/29/2011 Bianca Reece
6/6/2012 Site Visit Site visit with staff (Elston & Janes). Met with Ben Smith the Hatcher supervisor. Erik Norberg
7/22/2013 Report or Workplan Review - Other Reviewed the Sampling and analysis plan for 2013 work. Erik Norberg
9/11/2013 Update or Other Action Staff changed from Erik Norberg to Denise Elston. Kristin Thompson
10/24/2013 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 71002 4,000-Gallon AST. Denise Elston
1/10/2014 Update or Other Action Spoke with Adam Olson, NSRAA Hidden Falls Hatchery Manager following a brief review of the CDI report. Levels in soil were 2600mg/kg DRO at -2'. NSRAA interested/willing to entertain ICS, but plans for the site up in the air; whether to leave as is, remove concrete and membrane do in-situ, or use the area as storage facility. Plan to reconnect in spring when ground is exposed. Sally Schlichting
3/10/2014 Update or Other Action Reviewed data and requested more information from CDI in preparation for site closure. Danielle Duncan
4/1/2014 Site Characterization Report Approved Approved the Site Investigation report dated September 2013. Danielle Duncan
4/1/2014 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 71002 10,000-Gallon AST. Danielle Duncan
4/18/2014 Cleanup Complete Determination Issued DEC has determined no further assessment or cleanup action is required. There is no longer a risk to human health or the environment, and this site will be designated as closed on the Department's database. This determination is in accordance with 18 ACC 75.380 and does not preclude DEC from requiring additional assessment and/or cleanup action if future information indicates that this site may pose an unacceptable risk to human health or the environment. Danielle Duncan

Contaminant Information

Name Level Description Media Comments
BTEX < Method 2 Most Stringent Soil
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil

Control Type

Type Details
No ICs Required


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

Missing Location Data

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