1937
Mr. Gruninger is born in Paterson, New Jersey to Martin A. and Henrietta Gruninger.
1959
Mr. Gruninger marries Margaret M. Cooke.
1960
Mr. Gruninger receives a Bachelor of Science in civil engineering at the New Jersey Institute of Technology.
1960
Mr. Gruninger becomes an engineer for the New York Telephone Company in Bronx, New York.
1964
Mr. Gruninger is licensed as a Professional Engineer in New Jersey.
1966
Mr. Gruninger becomes an engineer and project engineer for Malcolm Pirnie, Incorporated in White Plains, New York.
1968
Mr. Gruninger receives a Master of Science in civil engineering at the New Jersey Institute of Technology.
1968
Mr. Gruninger becomes a project manager for Malcolm Pirnie, Incorporated in Paramus, New Jersey.
1975
Mr. Gruninger serves as president of Bergen County Society Professional Engineers.
1979
Mr. Gruninger becomes vice president of C.C. Johnson & Associates, PC in Silver Spring, Maryland.
1980
Mr. Gruninger becomes editorial director of Industrial Water Engineering.
1983
Mr. Gruninger serves as chairman of the Engineering Foundation Conference on Solid Waste Management in New York.
1990
Mr. Gruninger becomes vice president of Lewis & Zimmerman Associates, Inc. in Rockville, Maryland.
1991
Mr. Gruninger serves as senior project manager of Gannett Fleming Inc. in Baltimore, Maryland.
1998
Mr. Gruninger becomes a freelance consultant on major waste water treatment projects.