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Site Report: ADOT&PF AMHS Ferry Terminal Ketchikan


Site Name: ADOT&PF AMHS Ferry Terminal Ketchikan
Address: 3501 North Tongass Highway, UST Facility ID 3212, Ketchikan, AK 99901
File Number: 1516.26.032
Hazard ID: 25592
Status: Cleanup Complete
Staff: ,
Latitude: 55.354658
Longitude: -131.693233
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

On 10/13/2010, while removing the existing 550-gallon diesel underground storage tank (UST) that provides fuel for the standby generator at the Ketchikan Ferry terminal, it was discovered that fuel had been leaking from the tank sump and was running down the side of the tank that had contaminated the underlying material. The property consists of imported angular rock fill placed over tideland sediments with an asphalt surface. Any subsurface water is contaminated by salt water intrusion and is not a drinking water resource. Initial excavation efforts removed approximately 27 cubic yards of contaminated soil, which was placed in supersacks and removed from the site pending receipt of laboratory results. In accordance with 18 AAC 78.090(c)(2)(B), Nortech collected Release Investigation soil confirmation samples from the excavation in locations below and around the former tank and from the excavated contaminated soil. All four confirmation soil samples and the field duplicate collected from the excavation were below the laboratory reporting limit or below the Table B2 migration to groundwater soil cleanup levels for gasoline range (GRO), diesel range (DRO), and residual range (RRO) hydrocarbons and Table B1 benzene, toluene, ethylbenzene, and xylenes (BTEX) volatile compounds. The polycyclic aromatic hydrocarbon (PAH) compound concentrations in the one confirmed sample analyzed were each below the Table B1 migration to groundwater soil cleanup levels. The maximum concentration of DRO in the excavated soil was 7,130 milligrams per kilogram (mg/kg). The excavated soil was not analyzed for PAH compounds. No groundwater was encountered in the excavation.

Action Information

Action Date Action Description DEC Staff
10/20/2010 Spill Transferred from Prevention Preparedness and Response Program Spill transferred through UST program by PERP staff Sarah Moore. Spill no. 10119928601; spill date = 10/13/10; substance = diesel; quantity = unknown. Mitzi Read
12/13/2010 Site Added to Database A new site has been added to the database Mitzi Read
12/13/2010 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST site created in CSP database for source area 550-Gallon Standby Generator Diesel UST, 78994 Mitzi Read
12/13/2010 Leaking Underground Storage Tank Cleanup Initiated - Petroleum 3/2/11 - Administrative action addition since cleanup work has been started. Evonne Reese
12/13/2010 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78994 name: 550-Gallon Standby Generator Diesel UST Mitzi Read
12/14/2010 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78994 550-Gallon Standby Generator Diesel UST. Bruce Wanstall
11/25/2011 Offsite Soil or Groundwater Disposal Approved DEC has approved the off-site transport of contaminated soil generated by regulated UST corrective action for transport by Northland Services and remediation by Waste Management at the Columbia Ridge Landfill in Arlington, OR. Bruce Wanstall
11/28/2011 Final Cleanup Report Reviewed DEC has determined that the UST Closure Report by Nortech Environmental meets 18 AAC 78 regulation and UST Procedures Manual requirements and satifies 18 AAC 78.276 final reporting for site closure. Bruce Wanstall
12/1/2011 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78994 550-Gallon Standby Generator Diesel UST. Bruce Wanstall
12/13/2011 Cleanup Complete Determination Issued The DEC has concluded that the UST closure by removal release investigation and cleanup in 2010 at the ADOT&PF AMHS Ferry Terminal in Ketchikan satisfies 18 AAC 78 regulations allowing closure of the record on the contaminated sites database. The Determination Letter was sent by regular mail today. Bruce Wanstall
10/31/2014 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78994 550-Gallon Standby Generator Diesel UST. Bruce Wanstall

Contaminant Information

Name Level Description Media Comments
DRO < Method 2 Most Stringent Soil In accordance with 18 AAC 78.090(c)(2)(B), Nortech collected Release Investigation soil confirmation samples from the excavation in locations below and around the former tank and from the excavated contaminated soil. All four confirmation soil samples and the field duplicate collected from the excavation were below the laboratory reporting limit or below the Table B2 migration to groundwater soil cleanup levels for GRO, DRO and RRO hydrocarbons and Table B1 BTEX volatile compounds. The PAH hydrocarbon compound concentrations in the one confirmed sample analyzed were each below the Table B1 migration to groundwater soil cleanup levels. The maximum concentration of DRO in the excavated soil was 7,130 milligrams per kilogram (mg/kg). The excavated soil was not analyzed for PAH compounds. No groundwater was encountered in the excavation.

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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