Site Report: ADOT&PF Gustavus Airport Sitewide PFAS
|Site Name:||ADOT&PF Gustavus Airport Sitewide PFAS|
|Address:||Gustavus Airport, Gustavus, AK 99826|
|Staff:||Danielle Duncan, 9074655207 firstname.lastname@example.org|
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.
The Alaska Department of Transportation and Public Facilities (ADOT&PF) detected two per and polyfluoroalkyl substances (PFAS) compounds perooctanesulfonic acid (PFOS) and Perfluorooctanoic acid (PFOA) in groundwater at two public water system wells near the airport in Gustavus in July 2018. Concentrations of PFOS exceeded the EPA's lifetime health advisory (LHA) levels in public water system ID AK 2111476 known as “Gustavus Airport.” Concentrations of PFOS and PFOA were below the Lifetime Health Advisory (LHA) in public water system ID AK 2130596 known as “Gustavus Water System” that provides water to the National Park Service housing and also to the Gustavus School. The contaminants are believed to have originated from the historic use of Aqueous Film Forming Foam (AFFF) at various locations at the Gustavus Airport Investigation and public outreach are on-going. DOT&PF is working with an environmental consulting firm, Shannon & Wilson, Inc., and the Alaska Department of Environmental Conservation (DEC) to identify and sample private water wells that may have been affected. Water is being provided for well owners with PFAS (sum of five PFAS compounds) greater than or equal to 65 parts-per-trillion. For more information visit the ADOT&PF Gustavus webpage: http://dot.alaska.gov/sereg/GST-AIP_PFA/index.shtml
|Action Date||Action||Description||DEC Staff|
|8/14/2018||Site Added to Database||A new site has been added to the database||Mitzi Read|
|8/24/2018||Public Notice||A public information meeting + Q&A about PFAS in the groundwater at the Gustavus Airport and a community well will be held at the Gustavus Library on Monday, August 27, 2018 at 5:30-7:00 pm. The Alaska Departments of Transportation, Environmental Conservation, Health and Social Services, and Administration will provide information. Independent environmental consulting firm, Shannon & Wilson, will attend to schedule sampling times for properties south of the airport. More info at www.alaska.gov/go/C732.||Danielle Duncan|
|9/6/2018||Update or Other Action||Shannon and Wilson has sampled 44 groundwater wells, the two wells previously sampled, and 3 surface water locations in the area for 6 PFAS compounds. A rush on the analysis was requested for 10 samples and the other results will follow.||Danielle Duncan|
|9/18/2018||Potentially Responsible Party/State Interest Letter||Sent today~||Danielle Duncan|
|9/21/2018||Report or Workplan Review - Other||Shannon & Wilson (S&W) has completed the first round of PFAS groundwater contamination delineation. PFAS discovered in several wells on the Gustavus Airport property and three private wells off property are reported in concentrations above DEC action levels (65 parts-per-trillion (sum of five PFAS compounds)). Concentrations at most private wells and the well which serves the National Park Service water system are below DEC action levels. S&W has expanded the sampling area to wells east and west of the airport. Water is being provided for people whose wells exceed the action level. For more information visit the ADOT&PF Gustavus webpage: http://dot.alaska.gov/sereg/GST-AIP_PFA/index.shtml||Danielle Duncan|
|9/21/2018||Exposure Tracking Model Ranking||Initial ranking with ETM completed for source area id: 80270 name: ADOT&PF Gustavus Airport Sitewide PFAS||Danielle Duncan|
There are no documents for this site report.