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Site Report: ADOTPF Main Shop Ketchikan


Site Name: ADOTPF Main Shop Ketchikan
Address: 5150 North Tongass Highway (4 mile), Ketchikan, AK 99901
File Number: 1516.26.012
Hazard ID: 24910
Status: Cleanup Complete
Staff: ,
Latitude: 55.377551
Longitude: -131.725088
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

In June 1993, site activity resulted in the emptying and closure in-place of two 1,000-gallon regulated underground storage tanks (USTs). Based on the UST site assessment report dated January 12, 1994, the tanks were emptied and filled with concrete. Tank dispensers had been situated on top of the tanks. As a result, the fuel release was determined to be the result of fuel handling that impacted a limited area adjacent to the tanks which was recovered and disposed off-site. The UST closure event ID# 1993 is now closed on the Leaking Underground Storage Tank (LUST) database and any residual contamination from this historical event will be managed through event ID# 2598.

Action Information

Action Date Action Description DEC Staff
11/3/1993 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77864 Site Assessment confirmed diesel contamination at 9000mg/Kg and gasoline contamination at 2400 mg/Kg. First page of laboratory chain of custody missing; volatile analysis samples not preserved in field biased TPH results low. * Not Assigned
11/3/1993 Site Added to Database * Not Assigned
10/11/1999 Leaking Underground Storage Tank Cleanup Initiated - Petroleum Two USTs closed in place under drive-through pillars. 5 cubic yards of oily soil was excavated and disposed off-site. * Not Assigned
10/2/2001 Update or Other Action Changed Project Manager from Paul Horwath to Mike Jaynes, serious deficiencies shown by consultant. Site reranked from High to Medium based on no groundwater use at site. No corrective action workplan submitted by consultant as requested in 1994 by Randy Rice Cynthia Pring-Ham
8/27/2002 Update or Other Action File review for PM change: Jaynes to Wanstall. Tank closure sampling location, laboratory chain of custody, field preservation for volatiles are each in question. No followup release investigation and corrective action is direct violation of 18 AAC 78 regulation. Bruce Wanstall
5/6/2004 Update or Other Action The facility is shared by DOT and DPS. Three underground storage tank closure projects have been performed at the site; oily soil was found during each project but the source is not known. Residual soil contamination may be impacting streams on east and west sides of the property. Bruce Wanstall
3/1/2005 Update or Other Action USTs closed in-place in 1993 - corrective action plan was requested for petroleum release. Bruce Wanstall
6/20/2007 Exposure Tracking Model Ranking Subsurface soil exposure routes are de-minimis; exposure by future ingestion of groundwater can be controlled using institutional site controls. Bruce Wanstall
6/20/2007 Site Closure Approved Compliance Order in June, 1993, resulted in the emptying and closure in-place of two 1,000gallon regulated underground storage tanks at the #754 facility. Based on the site assessment report dated January 12, 1994, the tanks were emptied and filled with concrete; dispensers had been situated on top of the tanks. Leakage was determined to be the result of fuel handling that impacted a limited area adjacent to the tanks which was recovered and disposed off-site. The UST closure event ID 1993 is now closed on the LUST database and any residual contamination from this historical event will be managed through event ID#2598. Bruce Wanstall
8/24/2007 Update or Other Action Review and comment on workplan for the Ketchikan ADOT&PF Maintenance Shop LUST contamination. Three monitoring wells will be installed and the contaminated soil stockpile will be assessed. Bruce Wanstall
5/7/2010 Update or Other Action FY2010 field work includes additional groundwater sampling to monitor declining hydrocarbon contamination to ensure that off-site migration pathways are protected and possibly close the site. The objective of periodically monitoring the ground water for contamination is to establish a trend over time to determine if residual petroleum contamination is expanding, stable or in decline. If the data indicate an expansion of contamination then additional assessment and/or cleanup action will be performed to ensure the site does not pose an unacceptable risk to human health or the environment. Bruce Wanstall

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.

Missing Location Data

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