Senator, Commonwealth of Pennsylvania Senate, District 26, 2001-2014

Majority Policy Chair, Commonwealth of Pennsylvania Senate, 2011-2014

Member, Delaware County Council, 1982-1989

Chair, Delaware County Council, 1987-1989

Former Member, Army Science Board

Member, Arthritis Caucus

Member, Autism Caucus

Member, Biotechnology/Life Science Caucus

Member, Delaware County Economic Development Partnership

Member, Delaware County Transportation Management Association

Member, Delaware River Basin Caucus

Member, Delaware River Port Caucus

Member, Firefighter and Emergency Services Caucus

Member, Local Government Commission

Member, Pennsylvania Energy Development Authority

Board of Directors, Pennsylvania Higher Education Assistance Agency

Member, Pro-Life Caucus

Chair, Delaware Valley Regional Planning Commission, 1988-1989

Biology Professor, Drexel University

Biology Professor, East Stroudsburg State College

Director of Public Health, Upper Darby Township

Executive Director, Delaware County, 1992-2001

Regional Administrator, US Environmental Protection Agency, Region III, 1989-1992

Chief Administrative Officer of Upper Darby Township, 1976-1982

Assistant Professor of Biology, Hamilton College, 1969-1973

Founding Member, Community Action Agency

Member, Delaware County Community College Educational Foundation

Founder, Delaware County Human Services Partnership

Member, Green Space Alliance

Member, March of Dimes

Member, Partnership for the Delaware Estuary

Member, Scouting for Food

President, Pennsylvania Resources Council, 1996