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Site Report: CANOL Pipeline Pump Station L (FUDS)

Site Name: CANOL Pipeline Pump Station L (FUDS)
Address: ~3 Miles NW of Dot Lake; N Side of Alaska Highway between MP 1364 and 1365, Dot Lake, AK 99737
File Number: 170.38.052
Hazard ID: 26828
Status: Active
Staff: Kelly Walker, 9074512166 kelly.walker@alaska.gov
Latitude: 63.679294
Longitude: -144.155970
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

The CANOL pipeline, constructed during World War II, transported fuel from the Norman Wells Oil Field in Northwest Territories, Canada to Ladd Air Force Base (AFB) in Fairbanks, Alaska. The entire CANOL system contained 1,600 miles of pipeline. CANOL No. 4, from Whitehorse to Ladd AFB, extended 605 miles with approximately 296 miles of pipeline located in Alaska. CANOL Pipeline No. 4 was on the ground surface and was used to transport aviation gasoline, motor gasoline, and diesel fuel oil. A 2017 site visit noted infrastructure remains including: concrete pump house foundation, building debris from the shop/garage, and structure debris from the tank truck loading and barrel filling unit area. The area surrounding the 100- and 300-bbl equalizing tanks and extending to the 1,000-gallon fuel day tank area was found underwater. Distressed vegetation and fuel odor was identified in an area southwest of the former equalizing tanks. In addition to the pump station features, a large number of drums, cans, and other debris were observed across the site. A follow up 2017 site investigation documented DRO; benzene; ehtylbenzene; xylenes; 1,2,4 TMB; naphthalene; 1-methynaphthalene; and 2-methylnaphthalene above cleanup levels in soil borings 10-20 feet below ground surface and DRO; RRO, cadmium; and mercury were documented above cleanup levels in surface soil.

Action Information

Action Date Action Description DEC Staff
1/22/2018 Site Added to Database A new site has been added to the database Mitzi Read
1/25/2018 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 80191 name: CANOL Pipeline Pump Station L (FUDS) Gretchen Caudill
1/26/2018 Document, Report, or Work plan Review - other DEC Comments provided - Draft Report Site Inspections Pump Stations I, L, and M. Contamination above cleanup levels has been documented at L and M. No contamination was documented at I. DEC concurs that no further assessment is necessary at I and has asked for a list of data gaps and necessary assessments remaining to be provided for L and M. Gretchen Caudill
5/21/2018 Document, Report, or Work plan Review - other DEC Approval - SI for L, M, I. DEC concurs no further investigation is needed at Pump Station I as no contamination above CULs was recorded. Petroleum contamination remains at L and M. DEC provided this approval on March 21, 2019. Gretchen Caudill
7/8/2019 Document, Report, or Work plan Review - other Comments provided on WP for removal of POL contaminated soil removal into GW table and GW monitoring. Gretchen Caudill
7/10/2019 Meeting or Teleconference Held DEC attended a stakeholder meeting with USACE, BLM, DOT&PF, and AT&T re: WP comments. Gretchen Caudill
7/31/2019 Update or Other Action DEC provided with an alternative plan to sample soil transport and staging locations to satisfy AT&T comments. DEC also provided with a letter detailing past findings from what was previously identified as a dump on site. Findings confirm this area is not an AOC. Gretchen Caudill
8/21/2019 Document, Report, or Work plan Review - other DEC Approval of WP for soil removal and monitoring well installation. Removals may extend into the water table. Gretchen Caudill
10/2/2019 Document, Report, or Work plan Review - other DEC issued approval for work plan modifications. Excavation to cease pending installation of additional soil borings. Excavation is planned to resume in 2020. Eric Breitenberger
6/16/2020 Offsite Soil or Groundwater Disposal Approved Soil transport request approved. Kelly Walker
5/4/2021 Update or Other Action Removal Action Report for CANOL Pump Station "L" review completed. Report detailed continuation of contaminated soil removal at CANOL Pump Station "L", an effort started in 2019. Total contaminated soil removed was 7,424 tons. Over one ton of nonhazardous metallic debris and Transite pipe was also removed. Groundwater monitoring wells are in place to observe the state of groundwater contamination. Kelly Walker
7/7/2021 Document, Report, or Work plan Review - other Manager reviewed the CANOL Pump Station "L" Sampling and Analysis Plan Addendum for CANOL Pump Station "L". The plan details the sampling of three groundwater monitoring wells to evaluate contaminant concentrations at the former CANOL Pump Station "L". The work plan is an addendum to the 2019 Final Work Plan CANOL Pipeline No. 4 Formerly Used Defense Site CANOL Pump Station "L" Contaminated Soil and Nonhazardous Debris. This addendum included an impartial third-party waiver request. Both request and SAP addendum are approved. Kelly Walker
9/2/2021 Document, Report, or Work plan Review - other 2020 Removal Action Report for CANOL Pump Station "L" has been approved. Report detailed the continuation of soil removal started in 2019. Approximately 7,424 tons of contaminated soils were removed. Additionally over one ton of nonhazardous metallic debris and transite pipe were removed from the site. Analytical samples from the sidewalls of the excavation yielded clean margins, however, the bottom of the excavation was inundated with water, preventing collection of a base sample. Monitoring well sample results show a small DRO plume with concentrations up to 6,230 ug/L, above Table C Groundwater cleanup level of 1,500 ug/L. Surface water samples were all below Alaska Surface Water Quality Standards for TAH and TAqH. USACE plans to continue groundwater monitoring at this site. Kelly Walker
10/28/2021 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 80191 CANOL Pipeline Pump Station L (FUDS). Kelly Walker
3/11/2022 Document, Report, or Work plan Review - other Approved 2021 Groundwater Sampling Report for CANOL Pump Station "L". Report details the 2021 groundwater sampling at three monitoring wells to evaluated the concentrations of diesel range organics (DRO), 1-methylnaphthalene, and naphthalene in groundwater. Kelly Walker
4/4/2022 Document, Report, or Work plan Review - other Received CANOL Pump Station "L" Sampling and Analysis Plan Addendum for Fall 2022 groundwater sampling. Work plan details the planned sampling of three groundwater monitoring wells for diesel range organics (DRO), 1-methylnaphthalene, and naphthalene in groundwater. Kelly Walker
3/6/2023 Document, Report, or Work plan Review - other Review completed for 2022 Groundwater Sampling Report for the former pump station CANOL "L". This report details the sampling of the three existing groundwater monitoring wells at the site. All three wells detected DRO above Table C groundwater cleanup levels. Review in progress. Kelly Walker
6/12/2023 Site Characterization Workplan Approved DEC reviewed and approved the Environmental Investigation Work Plan for the former CANOL Pump Station "L". Up to five additional monitoring well swill be installed at the site. Wells will be developed and sampled to evaluate groundwater contamination at the site. Subsurface soils will also be sampled during installation of monitoring wells to evaluate subsurface soil contamination at the site. Kelly Walker
8/7/2023 Offsite Soil or Groundwater Disposal Approved Offsite soil disposal approved for CANOL Pumpstation L, contaminated media transported and disposed of out of state. Approximately 5-55 gallon drums and 1 supersack were transported. Kelly Walker
3/28/2024 Site Characterization Report Approved DEC reviewed and approved the Environmental Investigation Report for the former CANOL Pump Station "L". This report detailed the installation of five additional groundwater monitoring wells at the site to determine the full extent of groundwater contamination at the site. Soil samples were collected and analyzed for diesel range organics (DRO) and polycyclic aromatic hydrocarbons (PAHs) to evaluate subsurface soil contamination. All results were below DEC Migration to Groundwater cleanup levels. Groundwater samples were collected from both the previously installed wells at the site and the newly installed wells. Results indicate groundwater contamination is still present at the site and monitoring is ongoing. Kelly Walker

Contaminant Information

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State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
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