FAIRCHILD AIR FORCE BASE, Wash. – Officials from the Air Force Civil Engineer Center notified residents who will be part of phase four water sampling for elevated levels of PFOS and PFOA Monday.

Base officials said phase four included approximately 100 residential wells in two areas. The new sampling areas were chosen as a preventative measure and based on the results of phase three sampling that took place in July. Officials said individual residents will be personally notified of preliminary results as soon as they are released by the air force base.

In phase three of PFOS/PFOA sampling, 50 residential wells were tested to the north and south of the base. 21 wells to the north were found to have PFOS/PFOA concentrations above the EPA lifetime health advisory levels, 19 wells had concentrations below the HA and 10 had no detectable concentrations according to Base Officials. All southern-tested wells were non-detect for PFOS/PFOA. Where samples showed chemical concentration levels over the EPA advisory, Air Force officials said they immediately implemented alternate drinking water solutions.

For more information on water sampling, contact the Fairchild AFB Public Affairs office at (509)-247-5705.