| Action Date |
Action |
Description |
DEC Staff |
| 7/21/2016 |
Potentially Responsible Party/State Interest Letter |
Potentially Responsible Party / State Interest Letter sent to CPTD Alaska, LLC by PPRP staff Wesley Ghormley. |
Mitzi Read |
| 11/27/2018 |
Update or Other Action |
ADEC, Contaminated Sites Program received a forwarded copy of the Interim Corrective Action Report, 2018 Site Investigation, Crowley Nome South Tank Farm, by Kasteler Consulting, Inc. |
Laura Jacobs |
| 12/11/2018 |
Spill Transferred from Prevention Preparedness and Response Program |
Spill transferred by PPRP staff Wesley Ghormley. Spill no. 16389919802; spill date = 7/16/16; substance = unknown petroleum; quantity = unknown; source = former tank farm; PPRP file no. 400.02.001; description: historical petroleum contamination confirmed during demolition of former tank farm. |
Mitzi Read |
| 12/13/2018 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 12/17/2018 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 80320 name: Crowley Nome South Tank Farm |
Mitzi Read |
| 1/23/2019 |
Document, Report, or Work plan Review - other |
ADEC staff reviewed the "Draft Interim Corrective Action Report, 2018 Site Investigation, Nome South Tank Farm" submitted by Kasteler Consulting, Inc. received November 27, 2018. ADEC was in agreement with Kasteler to conduct biannual sampling. |
Laura Jacobs |
| 8/27/2019 |
Meeting or Teleconference Held |
ADEC staff met with the Responsible Party and their contractor to discuss past work and the approach for understanding influence of tidal fluctuation on suprapermafrost groundwater in the area in addition to sampling groundwater for contaminants of concern. A level logger will be installed one month prior to the groundwater sample event. An updated work plan is expected in the next month. |
Laura Jacobs |
| 10/30/2019 |
Document, Report, or Work plan Review - other |
ADEC staff reviewed the 2019 Groundwater Monitoring Work Plan; Nome South Tank Farm, Nome Alaska for groundwater sampling from the six monitoring wells. The QEP will collect groundwater samples during seasonal groundwater fluctuations. Contaminant concentrations will be checked relative tidal fluctuations in late fall 2019. Evaluation of tide-influenced groundwater to surface water connectivity will be conducted. Specific conductivity will be used as a surrogate for determination of tidal influence on groundwater. |
Laura Jacobs |
| 8/31/2020 |
Document, Report, or Work plan Review - other |
ADEC reviewed the report for November 2019 site work and approved the recommendations of installing additional monitoring wells, more source characterization, and continued groundwater monitoring to better understand the petroleum contaminant plume. The consultant documented the lack of tidal influence on groundwater at the site. |
Laura Jacobs |
| 10/30/2020 |
Document, Report, or Work plan Review - other |
ADEC staff reviewed the work plan addendum sent by Crowley October 5, 2020. Proposed efforts include annual groundwater monitoring of six wells. ADEC requested that lead and petroleum contaminants remaining on the site be further delineated. |
Laura Jacobs |
| 11/6/2020 |
Meeting or Teleconference Held |
ADEC staff met with staff from Crowley Fuels, LLC who are concerned with the Nome South Tank Farm site characterization efforts. Matters discussed included necessary efforts at the site to be included in the next work plan effort, specifically characterizing the petroleum plume extents horizontally as well as vertically, and determining the extent of lead contamination in the soils remaining at the site. |
Laura Jacobs |
| 5/4/2021 |
Document, Report, or Work plan Review - other |
ADEC reviewed the work plan submitted to our office on April 1, 2021 under the title of "Former Nome South Tank Farm Site Characterization Work Plan and Data Gap Review, Nome, Alaska" by DNA Environmental Consultants, LLC. |
Laura Jacobs |
| 9/10/2021 |
Meeting or Teleconference Held |
ADEC staff met with the RP and their consultant to review findings from fieldwork being conducted presently. Two figures were presented with results from the OIP survey (Optical Image Profiler) which revealed a source area off western property boundary in the roadway. A report will be submitted after field work and samples are processed. |
Laura Jacobs |
| 8/1/2022 |
Meeting or Teleconference Held |
Discussions were held to determine appropriate numbers of replicate samples for Decision Units that will follow excavation of the highest levels of lead in Decision Unit 4, and how to sample Decision Unit 5 in this area. |
Laura Jacobs |
| 8/5/2022 |
Document, Report, or Work plan Review - other |
Approval by email was granted to amend the 2019 monitoring work plan to include groundwater sampling this year at all seven monitoring wells to collect groundwater samples for gasoline range organics (GRO), diesel range organics (DRO), residual range organics (RRO), volatile organic carbon (VOCs), and total lead.
Approval on this date was also given for a lead removal work plan to conduct ISM sampling after excavation of previously sampled decision units across the site from 0-1 ft below ground surface. Samples will then be taken across the site to characterize the remaining soils under the excavated areas, as well as across the site for total lead. Wastes will be characterized for petroleum as well before being shipped out of state to a landfill in Washington as long as samples prove lead levels are non-hazardous. |
Laura Jacobs |
| 8/19/2022 |
Document, Report, or Work plan Review - other |
The Former Nome South Tank Farm Fall 2021 Site Characterization Report, Nome, Alaska was reviewed and comments were sent to the RP and their consultant. A recommendation was made to do additional soil removal in areas with remaining high levels of lead, and that work plan was approved a week ago. The report will be revised to reflect these comments. |
Laura Jacobs |
| 1/20/2023 |
Document, Report, or Work plan Review - other |
DEC responded to the Response to Comments table sent by the RP January 9, 2023 in a dialog regarding the Former Nome South Tank Farm Fall 2021 Site Characterization Report, Nome, Alaska. DEC approved the report with the additional request to continue additional investigation and delineation to determine the extent of contamination from the Nome South Tank Farm. Including investigation of groundwater in the area of the former tanks and additional soil and groundwater investigations off-property to the north, west and southwest. |
Laura Jacobs |
| 5/15/2023 |
Meeting or Teleconference Held |
A meeting was held over Teams that included staff with the RP, the RP's consultants and DEC Contaminated Sites staff. The RP's consultants presented justifications for conclusions in the Fall 2021 Site Characterization Report, received March 31, 2022. There have been several meetings and discussions regarding this same report and Response to Comments. Discussion points centered on the need for additional site characterization, use of <40-inch Migration to Groundwater cleanup levels, additional Potential Responsible Parties, and what can be done in the future to move the site towards closure. |
Laura Jacobs |
| 8/3/2023 |
Document, Report, or Work plan Review - other |
DEC issued a review of two documents: the Former Nome South Tank Farm (NSTF) Fall 2022 Contaminated Soil Removal Report and the Former Nome South Tank Farm Fall 2021 Site Characterization Report received February 28, 2023 and March 31, 2023. This review letter documents our review of site status, approves the submitted reports, and discuss the path to closure. DEC does not approve the use of Arctic Zone Cleanup levels at this site, because recent investigations have not shown permafrost to be present. Because of this, DEC did not complete a review of the use of the Hydrocarbon Risk Calculator (HRC) included in the 2021 report. Soil contamination appears to be delineated on the site except for the northwest and southwest directions. DEC recommends investigating the piping leaving the southwest corner of the site for additional cleanup. Monitoring wells MW-2 and MW-3 contain high levels of diesel range organics (DRO) and appear to be associated with the NSTF. Also, soil gas data should be collected to evaluate vapor intrusion on the site instead of using soil data. Approval was given for the 2022 Contaminated Soil Removal Report for the excavation of remaining lead contaminated soils. |
Laura Jacobs |
| 7/11/2024 |
Site Visit |
Completed a site visit and took photos from the road way. |
Laura Jacobs |
| 2/18/2025 |
Document, Report, or Work plan Review - other |
Approved amendments to 2021 Work Plan. Additional sampling is to occur in 2025 with the objective of identifying seasonal trends in April 2025 and June 2025. |
Pax Templeton |
| 3/24/2025 |
Long Term Monitoring Workplan or Report Review |
The DEC reviewed quarterly groundwater samples provided in the 2024 Groundwater Monitoring Report. Concentrations of DRO found in monitoring wells MW-2 and MW-3 were above DEC clean up levels and reflect remaining contamination along the western edge of the site. Arsenic concentrations above DEC clean up levels were found at each well, including background well MW-7, and are assumed to be unrelated to activities at the site. Lead was detected slightly above clean up levels in well MW-6 in 2024. Lead concentrations in MW-6 in 2024 and MW-1 in 2023 are thought to be related to removal work conducted in 2022, despite removal work not having occurred in the area of MW-6. Additional groundwater sampling is to occur in April 2025 and June 2025, building a dataset to evaluate seasonal fluctuations. |
Pax Templeton |
