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Site Report: Haines-Fairbanks Pipeline MP 544 - Timber Pump Station

Site Name: Haines-Fairbanks Pipeline MP 544 - Timber Pump Station
Address: Richardson Highway Mile 276, Timber Pump Station, Delta Junction, AK 99737
File Number: 900.38.001
Hazard ID: 4481
Status: Active
Staff: Lisa Krebs-Barsis, 9072697691 lisa.krebs-barsis@alaska.gov
Latitude: 64.189194
Longitude: -145.892417
Horizontal Datum:NAD83

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

Previous investigations suggest that soil and groundwater contamination exceeding ADEC cleanup levels is limited to the Burn Pit area. 4/10/17: The zone of soil contamination has been adequately delineated. The highest concentration of Diesel range organics (DRO) measured at the burn pit was 12,000 mg/kg at 3-4 feet below ground surface (bgs). Contamination exists near the surface and extends to groundwater which is at about 22 feet bgs. The estimated volume of unsaturated contaminated soil is 4,000 cubic yards (y3). Below the ground water table, an additional 5,800 y3 of contaminated soil exists. The contamination within the smear zone appears to conflict with groundwater flow direction. There was no product in the groundwater but some had sheens (MW8 and MW11) and/or odor (MW6, MW8, MW11). Two groundwater monitoring wells located within the burn pit and southwest of the burn pit (MW3 and MW11) had COCs above ADEC cleanup levels.

Action Information

Action Date Action Description DEC Staff
7/17/2007 Site Characterization Workplan Approved Workplan approved this date. Anne Marie Palmieri
10/22/2007 Site Added to Database Site added to the database. Mitzi Read
4/29/2008 Site Characterization Workplan Approved USACE ROST workplan approved this date. Anne Marie Palmieri
9/4/2008 Site Characterization Report Approved 2007 fieldwork report approved. Petroleum contamination was found in the soil and groundwater at the site. Additional investigation is needed. Anne Marie Palmieri
3/5/2009 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 75468 name: auto-generated pm edit Haines-Fairbanks Pipeline MP 543 Anne Marie Palmieri
9/29/2010 CERCLA SI 2008 ROST SI report approved this date. 40 probes were installed. One soil sample was collected which showed significant contamination -- DRO 17,000 mg/kg, GRO 740 mg/kg, PAHs, VOCs, and arsenic. Groundwater wells were samples with exceedences noted for DRO of 13 mg/L and GRO 9 mg/L and PAHs. Additional investigation needed in 2010-11. Anne Marie Palmieri
2/4/2013 Update or Other Action project manager changed from Palmieri to Morris. Anne Marie Palmieri
8/25/2015 Meeting or Teleconference Held The ADEC and USACE participated in a scoping meeting regarding this site, however the project has been delayed because right of entry was not granted by the landowner. Jessica Morris
12/17/2015 Update or Other Action Staff changed to Danielle Duncan and hard file transferred to the Juneau office. Kristin Thompson
3/14/2016 Update or Other Action The RP is developing the scope of work for Timber Pump Station. They are proposing to remove everything outside of the building that may hold petroleum (pipes, tanks, valves, etc.) and remove any other potential contaminant sources except for the burn pit. Pipelines inside the building would be emptied and decommissioned. The burn pit requires additional investigation. Borings and monitoring wells would be installed as part of the planned effort to determine the nature and extent of contamination from the burn pit. Danielle Duncan
6/14/2016 Report or Workplan Review - Other Rec'd the Draft Work Plan Environmental Investigation Timber Pump Station this date. Danielle Duncan
6/23/2016 Site Characterization Workplan Approved Approved the Draft Work Plan Environmental Investigation Timber Pump Station this date. The objective of the work plan is to delineate the extent of soil and groundwater contamination at and around the burn pit only. The work plan outlines the following: Sampling of the 5 groundwater monitoring wells on site, advance 20 soil borings into the ground using Direct Push Technology - Soil samples will be collected from the borings and field screened using a PID, 6 of the borings will be completed as groundwater monitoring wells and sampled. Danielle Duncan
6/24/2016 Update or Other Action Requested that testing for PCP in soil and groundwater be added to the work plan via email. Danielle Duncan
8/2/2016 Site Visit Joint site visit by ADEC, DNR, USACE, and FES. There are some buildings (SHPPO eligible) containing old piping, tanks, and other equipment that will be removed in the future (contract has been awarded and work should commence next summer). The tanks may have lead based paint. The current scope of work is to investigate the burn pit only. Danielle Duncan
8/15/2016 Report or Workplan Review - Other Provided responses to comments via email this date. Danielle Duncan
8/26/2016 Site Characterization Workplan Approved Approved the final work plan this date - no changes were made to the draft plan. Danielle Duncan
9/27/2016 Meeting or Teleconference Held Meeting with the USACE and their consultant. There is a drinking water well on site that the USACE would like to decommission - I let them know to contact the DEC drinking water program on that as the well has nothing to do with historical contamination. Additionally, there are septic system injection wells in the area that also need decommissioning and I directed the USACE to discuss this with the water program and they already had plans to discuss with EPA. Danielle Duncan
10/24/2016 Update or Other Action The brush clearing has been completed and the contaminated soil removal action will occur in summer/fall 2017. Danielle Duncan
1/23/2017 Update or Other Action Provided comments on the draft environmental investigation. One noted comment is that the lab MDLs and LOQs are greater than the cleanup levels for soil – either use an alternative laboratory or an alternative analysis method. Drinking water methods tend to be more sensitive and Method 5030 is also acceptable. ADEC agrees that there appears to be elevated and naturally occurring chromium in the soils – chromium VI results are generally ND with a few low level exceptions. The ADEC also agrees that arsenic is likewise naturally occurring. Danielle Duncan
1/25/2017 Update or Other Action Provided comments on the draft work plan for Scottie Creek, Birch Lake, and Timber Pump Station. Danielle Duncan
2/16/2017 Update or Other Action Accepted responses to my comments this date. Danielle Duncan
3/16/2017 Site Characterization Report Approved Approved the Final Report Environmental Investigation Timber Pump Station this date. The burn pit only was investigated. The zone of soil contamination has been adequately delineated. The highest concentration of DRO measured at the burn pit was 12,000 mg/kg at 3-4 feet below ground surface (bgs). Contamination exists near the surface and extends to groundwater which is at about 22 feet bgs. The estimated volume of unsaturated contaminated soil is 4,000 cubic yards (y3). Below the ground water table, an additional 5,800 y3 of contaminated soil exists. The contamination within the smear zone appears to conflict with groundwater flow direction. There was no product in the groundwater but some had sheens (MW8 and MW11) and/or odor (MW6, MW8, MW11). Two groundwater monitoring wells located within the burn pit and southwest of the burn pit (MW3 and MW11) had COCs above ADEC cleanup levels. Danielle Duncan
3/16/2017 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 75468 auto-generated pm edit Haines-Fairbanks Pipeline MP 543. Danielle Duncan
3/23/2017 Update or Other Action Approved the work plan this date for removal of tanks, piping, etc. and some petroleum contaminated soil. Danielle Duncan
3/28/2017 Report or Workplan Review - Other Approved the UIC work plan this date. Danielle Duncan
7/6/2017 Update or Other Action Bristol is currently performing the removal work at Timber and have removed the two ASTs, the two USTs, and a portion of the buried pipelines. They have not found significant amounts of soil containing petroleum contamination at this point. This work may be completed by July 14th or sooner. Danielle Duncan
10/19/2017 Update or Other Action Approved the locations of replacement groundwater monitoring wells and additional wells this date via email. Danielle Duncan
12/11/2017 Report or Workplan Review - Other Reviewed the 2016 and 2017 report which was edited to add a second groundwater sampling event. Provided comments this date. The contaminated soil removal will be in a different report. Danielle Duncan
1/29/2018 Update or Other Action Accepted responses to my comments this date. Danielle Duncan
3/14/2018 Site Characterization Report Approved Approved the Final 2016 and 2017 Report Environmental Investigation this date. Contaminants of concern measured in the wells in May 2017 above ADEC cleanup levels are gasoline range organics, diesel range organics, ethylbenzene, xylenes, naphthalenes, trimethylbenzenes, benzo(b)fluoranthene, bis(ethylhexyl)phthalate, nitrobenzene, and lead. Also sent comments on the draft Scottie Creek/Birch Lake/Timber Pump Removal Action report. Danielle Duncan
3/19/2018 Report or Workplan Review - Other Provided comments on the UIC closure report this date. Danielle Duncan
3/27/2018 Report or Workplan Review - Other Provided comments on the Burn Pit Removal Action report this date. Danielle Duncan
4/3/2018 Report or Workplan Review - Other Reviewed and provided comments on the Draft Groundwater Sampling Work Plan 2018 Timber Pump Station and Gate Valve #52 this date. Danielle Duncan
4/5/2018 Update or Other Action Accepted responses to my comments on the DRAFT Groundwater Sampling WP Addendum, Timber Pump Station and GV52 (March 2018) this date. Danielle Duncan
4/5/2018 Update or Other Action Accepted responses to my comments on the Scottie/Birch/Timber Draft RmAR (Rev 0), February 2018 this date. Danielle Duncan
5/3/2018 Update or Other Action Per the EPA the dry well UIC will be clean closed and leaching well UIC will be conditionally closed and the ADEC will manage the cleanup moving forward. The EPA UIC program will be notified when the site is cleanup complete. Danielle Duncan
5/10/2018 Site Characterization Workplan Approved Approved the Final Groundwater Sampling Work Plan 2018 Timber Pump Station and Gate Valve #52. Thirteen groundwater monitoring wells will be sampled and analyzed for gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), volatile organic compounds (VOCs), semivolatile organic compounds (SVOCs), ethylene dibromide (EDB), polycyclic aromatic hydrocarbons (PAHs), pentachlorophenol, nitrobenzene, Resource Conservation and Recovery Act (RCRA-8) metals plus nickel and vanadium, dissolved iron and manganese, and sulfate. Danielle Duncan
5/24/2018 Final Cleanup Report Reviewed Approved the Timber Pump Station Burn Pit Contaminated Soil Removal Action Report Draft (Revision 0), dated February 2018. A total of 11,000 tons of petroleum contaminated soil was excavated and disposed of. The results for the confirmation samples were all below ADEC cleanup levels, however, additional petroleum impacted soil is present along the water table and smear zone. Groundwater monitoring will continue. Danielle Duncan
5/24/2018 Final Cleanup Report Reviewed Approved the Class V Underground Injection Control (UIC) Well Closure Report. A dry well and 3 septic leaching system wells (all UICs) were excavated and closed. All received closure by the EPA UIC program with the exception of leaching well #1 which received a conditional closure provided that groundwater monitoring continue with ADEC oversight. Danielle Duncan
5/24/2018 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 75468 auto-generated pm edit Haines-Fairbanks Pipeline MP 543. Danielle Duncan
5/30/2018 Report or Workplan Review - Other Reviewed and approved the report titled: 2017 Source and Contaminated Soil Removal Report Final (Revision 1). The work at Timber Pump Station included removal of the ASTs and associated contaminated soil, excavation of two underground storage tanks (USTs), excavation of the fuel distribution pipeline, excavation of the septic system, excavation of the dry well, closure of floor drains in the composite building, dismantling of the valve manifold pit building, and decommissioning of the drinking water well. The dry well and septic system excavations and underground injection control (UIC) closure and burn pit excavation are reported in separate documents. In total, 585.38 tons of petroleum contaminated soil was excavated and sent to OIT for thermal treatment during this effort. Danielle Duncan
8/23/2018 Update or Other Action The groundwater was sampled - awaiting results. Danielle Duncan
10/4/2018 Update or Other Action The draft report is still pending, but MW5 and diesel range organics (DRO) above the cleanup level (CUL) - may have mobilized something during the excavations. The wells in the former burn pit had values less than the CUL. Danielle Duncan
2/13/2019 Report or Workplan Review - Other Reviewed the 2018 draft groundwater monitoring report and had no comments. Monitoring well 5 (MW5) was resampled and the results were non-detect. Danielle Duncan
2/27/2019 Site Characterization Report Approved Approved the 2018 Final Groundwater Sampling Report this date. The wells were sampled in 2016, 2017, and 2018. The current results (2018) for all wells (13) sampled met cleanup levels. Confirmation soil samples from excavations of the burn pit, dry well, and septic system leaching wells were all below ADEC cleanup levels, however, additional petroleum impacted soil is present along the water table and smear zone resulting in ongoing groundwater monitoring. In addition, the underground injection control well (UIC) received a conditional closure from the Environmental Protection Agency (EPA). The excavation of contaminated soil down to the groundwater interface reduced the petroleum contamination observed in the groundwater. Since 2016 (over the past three sampling events), the groundwater monitoring wells have met the cleanup levels with the exception of MW-3 and MW-11. However, the 2018 results for these wells did meet cleanup levels, and additional sampling to establish a data trend that meets cleanup levels was recommended and the ADEC concurs. Once the wells have shown to meet cleanup levels over time (at least three sampling events), the site will be evaluated for site closure. Danielle Duncan
4/12/2019 Site Characterization Workplan Approved Approved via email the sampling of the groundwater monitoring wells using the previously approved work plan. Danielle Duncan
5/30/2019 Update or Other Action Brice Environmental is planning to conduct groundwater sampling at Timber Pump Station starting June 6 for several days. Danielle Duncan
12/20/2019 Report or Workplan Review - Other Reviewed the 2019 Draft Groundwater Sampling Report, dated December 2019. The field effort was completed between June 8 and 10, 2019. Groundwater samples were collected from 13 monitoring wells (MW-1, MW-2, MW-3R, MW-4 through MW-8, MW-9R, MW-11R, and MW-12 through MW-14). Sample results from one well, Well MW-11R, exhibited concentrations of Arsenic at 18.9 ug/l, DRO at 1.9 mg/l, 1,2,4-trimethylbenzene at 92 ug/l, ethylbenzene at 26 ug/l, and naphthalene at 12 ug/l; all of which exceed the ADEC Table C GCLs. Aside from the numerous LOQs that exceeded Table C GCLs for various compounds, all other detected contaminants from this well and the 12 other wells were below the Table C GCLs. Recommended actions include follow-on GWM in 2020. ADEC received and approved the final report on January 9, 2019. Joshua Barsis

Contaminant Information

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Control Type

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