Treatment of Perfluorinated Compounds to Protect Two Drinking Water Supplies

Wednesday, August 9, 2017: 1:35 p.m.
Kyle Hay , Weston & Sampson, Peabody, MA
Blake Martin , Weston & Sampson, Peabody, MA
Andrew Walker, E.I.T. , Weston & Sampson, Portsmouth, NH

Even with the recent EPA reductions in Health Advisory levels (May 2016) for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), the debate continues regarding acceptable exposure levels in drinking water supplies. Sources of PFASs include industrial and commercial product manufacturing and firefighting foams associated with air force bases and airports. These highly stable contaminants are persistent within our natural environment, encompass a family of dozens of compounds, and may have unique health effects.

Two different sites, one each in New Hampshire and Vermont, have experienced PFOS/PFOA contamination and have provided excellent opportunities for research of effective treatment with regard to drinking water. Treatment alternatives, risk reduction measures, public education efforts and medical monitoring efforts are consistently being evaluated. Pilot testing has been completed to analyze the effects of carbon treatment on the water systems, with a focus on maintaining adequate corrosion control and confirming the appropriateness of large-scale treatment designs. Demonstration testing of the same technology is ongoing to evaluate the effectiveness and develop a better understanding of carbon treatment over the long-term. This presentation discusses the implementation of both the Pilot testing and Demonstration project in the larger context of providing safe drinking water and maintaining an awareness of public demand and public health.

Kyle Hay, Weston & Sampson, Peabody, MA
Kyle D Hay is an Engineer at Weston & Sampson in Peabody, MA, where he focuses primarily on drinking water treatment processes. He has earned his BSME from Grove City College and MS from the University of New Hampshire.

Blake Martin, Weston & Sampson, Peabody, MA
Mr. Martin has had a 26-year career that has focused on a wide array of hydrogeologic services. Mr. Martin brings a unique perspective having been involved in technical hydrogeologic studies, municipal infrastructure design and planning, and long-term water resource management (monitoring, source protection programs and by-law development). His knowledge of groundwater modeling, source protection measures, town-based political government and practical infrastructure requirements is a unique blend of theoretical hydrogeology to practical, hands-on application.

Andrew Walker, E.I.T., Weston & Sampson, Portsmouth, NH
Andrew has an M.S. Hydrology from the University of New Hampshire. He has worked as a hydrologist at Weston & Sampson for 7+ years and is involved with a variety of projects, including studies of new water supplies, aquifer protection, inland and coastal flooding, watershed planning, dam safety, and bridge rehabilitation.