Fact Sheet March 2019: PFAS Investigation in North Pole Area Water
Updated: Mar. 27, 2019
- PFAS Sampling
- Drinking Water Well Results
- Groundwater Monitoring Well Results
- Surface Water Results
- Next Steps
See the PDF version of this fact sheet.
The finding of PFAS, or per- and polyfluoroalkyl substances, in drinking water has drawn attention nationwide, statewide and locally in the Fairbanks area. In Alaska, PFAS in the environment are often linked to the use of certain foams used in firefighting or fire training activities.
PFAS are man-made chemicals used in industry and consumer products worldwide since the 1950s. These chemicals resist heat, oil, water, and stains. They are used in firefighting foams and in many everyday products such as non-stick cookware and water- and stain-repellent fabrics. PFAS do not easily break down in the environment, and they travel rapidly to groundwater where they can spread. Concerns have emerged about possible health impacts of PFAS, and further studies are needed.
- DEC's PFAS web page has more information on PFAS, DEC’s 2018 action levels and EPA’s recent PFAS Action Plan.
Drinking Water Well Results
Water treatment systems used for sulfolane removal are also removing PFAS to below DEC action levels.
In summer 2018, DEC used the existing sulfolane monitoring program to sample North Pole groundwater for PFAS. DEC tested for PFAS in a small number of private water wells and wells used for monitoring sulfolane.
DEC collected more PFAS samples in late fall/early winter 2018. Water from other water wells and surface water – including Kimberly Lake and Badger Slough – was tested for PFAS. Hydrologists chose the test locations to look for PFAS across a wide range of groundwater conditions over an approximate six square mile area in the direction of groundwater flow north and northwest of the former North Pole Refinery.
DEC is aware that fire-fighting foams containing PFAS were used in the past on the former refinery property. The goal of the 2018 monitoring was to look for PFAS off the refinery. PFAS is not related to sulfolane, except that both chemicals were used on the former refinery.
People in the area sampled have already been provided alternate drinking water supplies or point of entry (POE) water treatment systems for sulfolane removal.
- 35 water wells, 20 of which had POE treatment systems, and
- 42 groundwater monitoring wells.
Drinking Water Well Results
POE treatment systems are effectively removing PFAS to below DEC action levels.
- Samples collected after treatment by POE systems show PFAS below the DEC action levels.
- PFAS results were far below DEC’s action level in all 20 treated water samples tested.
Groundwater Monitoring Well Results
There is a PFAS plume to the north-northwest of the former North Pole Refinery.
Surface Water Results
- Click on the map to see a larger version.
- A larger map is also available in the PDF version of this fact sheet.
DEC is working with parties responsible for the contamination to further define the PFAS plume off the former North Pole Refinery property.
Possible other sources of PFAS in the area are being explored.
Assessment and Cleanup
- Alaska Department of Environmental Conservation
- Division of Spill Prevention and Response
- Contaminated Sites Program
- Jim Fish
- Environmental Project Manager
- Alaska Department of Health and Social Services
- Division of Public Health
- Environmental Public Health Program
- Sarah Yoder
- Environmental Public Health Program Manager