MADISON/ALEXANDRIA, VA/George M. Semeniuk, age 67, passed away on Friday, May 24, 2013 at Coventry Village in Madison, WI after a valiant fight with cancer.

George was born on May 24, 1946 in Ames, IA to George and Alexandra Semeniuk. He was a 1964 graduate of Brookings High School, Brookings, SD, University of Kansas and Duke University, where he received a PhD in Physical Chemistry. His lifetime career was in the Chemical Control Division of the Environmental Protection Agency in Washington, DC where he passionately believed in the control of toxic substances.

He enjoyed getting out of the city into the horse country of Northern Virginia where he was a long time member of the Loudon Hunt of Leesburg, VA. The many photographs he took reflect the joy he had in the sport of horsemanship and in the love of his family.

As a young man, George showed athletic prowess and was the 1964 South Dakota state champion in the track events of 100 and 220 yard dashes.

He was a devoted son, brother and uncle to many nieces and nephews and was loved for his kind and generous heart and his eagerness to be part of their lives.

George was pre-deceased by his father and is survived by his mother in Madison, two sisters, Sandy Keating (Oak Harbor, WA) and Shirley (Don) Wallace of Madison. He is also survived by five loving nieces and nephews and their families and by many extended family and friends.

A family gathering celebrating George's life will be held at a later date in Brookings, SD.