| Action Date |
Action |
Description |
DEC Staff |
| 5/23/2019 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 6/26/2019 |
CERCLA PA |
DEC provided an Abbreviated Preliminary Assessment (APA) report to EPA on this date. The APA report documents the results of the samples collected by DEC in February 2019 and evaluates the results in accordance with the criteria developed by EPA for Preliminary Assessments. This report is a deliverable under the DEC-EPA PA/SI Cooperative Agreement. |
Anne Marie Palmieri |
| 7/11/2019 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, HSS, and DOA. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 7/15/2019 |
Update or Other Action |
Expanded drinking water well sampling completed by ADOT&PF. One location in Yakutat contains PFAS exceeding the August 2018 action levels and will continue to receive alternative water. In accordance with the April 2019 DEC Tech Memo, recent samples were only analyzed for PFOS and PFOA which was detected up to 60 ppt (PFOS+PFOA) at this same location. There were no exceedances of the Lifetime Health Advisory level of 70 ppt for PFOS and PFOA. Results table and figure are available for download under the Documents tab. |
Bill O'Connell |
| 10/24/2019 |
Update or Other Action |
June 2019 sample results were received from ADOT and are consistent with previous data. None of the wells sampled contain PFOS and/or PFOA at concentrations above the EPA Lifetime Health Advisory. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 1/23/2020 |
Update or Other Action |
December 2019 sample results were received from ADOT and are consistent with previous data. None of the wells sampled contain PFOS and/or PFOA at concentrations above the EPA Lifetime Health Advisory. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 1/24/2020 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, HSS, and DOA. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 1/27/2020 |
Update or Other Action |
December 2019 sample results were received from ADOT and are consistent with previous data. None of the wells sampled contain PFOS and/or PFOA at concentrations above the EPA Lifetime Health Advisory |
Bill O'Connell |
| 3/2/2020 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, HSS, and DOA. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 6/12/2020 |
Document, Report, or Work plan Review - other |
On June 12, 2020, ADEC received a Draft ADOT&PF Statewide PFAS Work Plan to survey PFAS at ADOT&PF impacted airports, including Yakutat. ADEC is in the process of reviewing this work plan and will provide comment to ADOT&PF. It is anticipated that each individual airport will have a supplemental plan to account of nuances at their location. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 6/22/2020 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, and HSS. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 7/15/2020 |
Workplan Requested |
On July 15, 2020, ADEC has reviewed the Draft ADOT&PF Statewide PFAS Work Plan and sent a letter requesting revisions. Work plan comments provided to ADOT&PF were in form of comment matrix. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 8/3/2020 |
Document, Report, or Work plan Review - other |
On August 3,2020, ADEC received the ADOT&PF Statewide PFAS Workplan, Revision 1 for review. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 8/10/2020 |
Document, Report, or Work plan Review - other |
On August 10, 2020, ADEC sent an approval letter for the ADOT&PF Statewide PFAS Work Plan, Revision 1. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 8/25/2020 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, and HSS. This action was entered on behalf of previous PM, Bill O'Connell. |
Jamie Grant |
| 8/26/2020 |
Update or Other Action |
Site transferred to Jamie Grant for project managment. |
Jamie Grant |
| 8/26/2020 |
Update or Other Action |
August 2020 sample results were received from ADOT. Data indicates one of the wells sampled contains PFOS and/or PFOA at concentrations above the EPA Lifetime Health Advisory. ADOT has reached out to the well owner to ensure an alternative drinking water source is made available. All other well results were consistent with previous data and did not exceed EPA's Lifetime Health Advisory for PFOS and/or PFOA. |
Jamie Grant |
| 11/23/2020 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, and HSS. |
Jamie Grant |
| 12/22/2020 |
Update or Other Action |
December 2020 sample results were received from ADOT and are consistent with previous data. None of the wells sampled contained PFOS and/or PFOA at concentrations above the EPA Lifetime Health Advisory. |
Jamie Grant |
| 1/25/2021 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, and HSS. |
Jamie Grant |
| 2/16/2021 |
Document, Report, or Work plan Review - other |
ADEC has reviewed a Final Water Supply Well Monitoring Report received on this date. The report summarizes data collected from wells between February 2019 and June 2020. In total, 89 properties were identified in the search area and owners/occupants were contacted to determine the presence or absence of a water supply well. The survey found 21 wells which were then categorized (based on water usage) 1 through 5 to prioritize additional monitoring, alternative water, and order of sampling. Twenty wells were determined to be category 1 or 2 wells (used for drinking cooking, dish washing, bathing, and other domestic purposes). They were sampled and evaluated for additional monitoring based on the following criteria: Active category 1 or 2 wells with a combined PFOS and PFOA concentration greater than or equal to 35 ppt during a previous sampling event or within 500 lateral ft of another well meeting that criteria were sampled quarterly. Active category 1 or 2 wells with a combined PFOS and PFOA concentration greater than or equal to 17.5 ppt during a previous sampling event or within 500 lateral ft of another well meeting that criteria were sampled quarterly. Ten of the initial 21 wells identified met one or more of these criteria. Following the first quarterly monitoring event, it was determined that wells which previously exceeded the PFAS action level (one well) would not be included in future events for this survey. Well owners with water exceeding the PFAS action level are provided alternative water. |
Jamie Grant |
| 4/9/2021 |
Update or Other Action |
March 2021 sample results were received from ADOT and are consistent with previous data. None of the wells sampled contained PFOS and/or PFOA at concentrations above the EPA Lifetime Health Advisory. |
Jamie Grant |
| 4/26/2021 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, and HSS. |
Jamie Grant |
| 5/24/2021 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, and HSS. |
Jamie Grant |
| 6/23/2021 |
Update or Other Action |
On this day, ADEC received May 2021 sample results from ADOT which are consistent with previous data. None of the wells sampled contained PFOS and/or PFOA at concentrations above the EPA Lifetime Health Advisory. |
Jamie Grant |
| 6/28/2021 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, and HSS. |
Jamie Grant |
| 7/14/2021 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 80459 name: Fire training and compliance usign AFFF |
Jamie Grant |
| 8/15/2021 |
Update or Other Action |
On this day, ADEC received July 2021 sample results from ADOT which are consistent with previous data. None of the wells sampled contained PFOS and/or PFOA at concentrations above the EPA Lifetime Health Advisory. |
Jamie Grant |
| 8/23/2021 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, and HSS. |
Jamie Grant |
| 10/25/2021 |
Document, Report, or Work plan Review - other |
On this day, ADEC received October 2021 sample results from ADOT which are consistent with previous data. None of the wells sampled contained PFOS and/or PFOA at concentrations above the EPA Lifetime Health Advisory. |
Jamie Grant |
| 10/25/2021 |
Meeting or Teleconference Held |
Meeting with ADOT, ADEC, Shannon and Wilson, and HSS |
Jamie Grant |
| 4/18/2022 |
Update or Other Action |
Groundwater monitoring results submitted. |
Janice Wiegers |
| 5/2/2022 |
Site Characterization Workplan Approved |
Reviewed Work Plan Addendum for Yakutat Airport PFAS Site Characterization. The work plan proposes the collection of surface and subsurface soil, groundwater, surface water, and sediment samples from along runways and other airport areas. The work plan identifies a former burn pit where samples will also be analyzed for petroleum and a fire training area where AFFF has been discharged in the past for training and compliance. |
Bill O'Connell |
| 6/15/2022 |
Document, Report, or Work plan Review - other |
On this date, DEC received the report titled Summary Report July 2020 to June 2021 Water Supply Monitoring Yauktat, Alaska. This report detailed the groundwater monitoring activities conducted between July 2020 and June 2021.
Perfluorooctanoic acid (PFOA) was detected during at least one of the four sampling events in sample IDs 33053, 33056, 33060, 33065, and 33066. Perfluorooctanesulfonic acid (PFOS) was detected during at least one of the four sampling events in sample IDs 33053, 33056, 33060, 33061, 33064, 33065, 33066, and 33068. PFOS was detected in sample ID 33066 at 71ppt during the August 2020 sampling event. This location is already considered an exceedance and has been provided alternate drinking water.
The current DEC action level for the sum of PFOS and PFOA is 70 parts per trillion (ppt) based on the Lifetime Health Advisory (LHA) level issued by the Environmental Protection Agency (EPA) in 2016.
On June 15, 2022, the EPA issued updated interim drinking water LHAs for PFOS of 0.02 ppt and for PFOA of 0.004 ppt. The DEC is still reviewing these interim LHAs and has not yet issued updated guidance for the State of Alaska.
|
Brandi Tolsma |
| 7/7/2022 |
Document, Report, or Work plan Review - other |
On this day, DEC received June 2022 Quarterly/Annual sample results from ADOT. One new exceedance was reported at sample ID 33065. Perfluorooctanesulfonic acid (PFOS) was detected at 70ppt and Perfluorooctanoic acid (PFOA) at 5.4ppt, exceeding the current DEC action level of 70ppt for PFOS+PFOA. ADOT has notified the the resident. |
Brandi Tolsma |
| 11/29/2022 |
Document, Report, or Work plan Review - other |
On this day, ADEC received September 2022 sample results from ADOT. None of the wells sampled contained PFOS and/or PFOA at concentrations above the current DEC action level for the sum of PFOS and PFOA of 70 parts per trillion (ppt). |
Brandi Tolsma |
| 1/20/2023 |
Document, Report, or Work plan Review - other |
On this day, ADEC received December 2022 sample results from ADOT. None of the wells sampled contained PFOS and/or PFOA at concentrations above the current DEC action level for the sum of PFOS and PFOA of 70 parts per trillion (ppt). |
Brandi Tolsma |
| 4/10/2023 |
Document, Report, or Work plan Review - other |
The DOT Yakutat Alternative Water Feasibility Study was submitted. An alternative water option was not chosen because DOT is currently working with the City/Borough of Yakutat and DEC’s grant program to extend Yakutat’s municipal water to the airport. |
Janice Wiegers |
| 5/11/2023 |
Long Term Monitoring Workplan or Report Review |
Reviewed 2021/2022 Water Supply Well Monitoring summary report for Yakutat Airport. The report is a summary of sampling from June and October 2021 and March and June 2022, the results of which were also reported in previous updates to the database. Seven wells were routinely monitored for PFAS, to date, three wells contain PFOS and/or PFOA above the DEC action level of 70 ppt and are provided with bottled water from ADOT. The City of Yakutat continues to pursue expansion of their public water system to serve the impacted area at the airport |
Bill O'Connell |
| 6/26/2023 |
Document, Report, or Work plan Review - other |
ADEC received June 2023 sample results from ADOT. None of the wells sampled contained PFOS and PFOA at concentrations above the current DEC action level for the sum of PFOS and PFOA of 70 parts per trillion (ppt). |
Mollie Dwyer |
| 5/10/2024 |
Document, Report, or Work plan Review - other |
ADEC received May 2024 sample results from ADOT. None of the wells sampled contained PFOS and PFOA at concentrations above the current DEC action level for the sum of PFOS and PFOA of 70 parts per trillion (ppt). |
Mollie Dwyer |
| 8/9/2024 |
Document, Report, or Work plan Review - other |
On this date DEC approved the Pre-Construction Sampling and Analysis Plan (SAP) prepared by Shannon & Wilson that describes the proposed approach for pre-construction environmental sampling for the City and Borough of Yakutat (CBY) Airport water extension project, which travels through the footprint of this site. Up to 30 soil borings will be advanced to an estimated 15 feet below ground surface (bgs) to sample for various potential contaminants of concern (COCs) such as per- and polyfluoroalkyl substances (PFAS) and petroleum related contaminants. The results of this investigation will guide the future management of contaminated soils at such time that the water line extension project is conducted. |
Mollie Dwyer |
