Jeffrey Coffey, P.E.
Director of Water Practice

DLZ Director of Water Practice, Jeff Coffey, joins Raisa Pesina, City of Columbus DOSD in a technical session “OSIS Augmentation Relief Sewer (OARS)” at the May 19th Southeast Section – Ohio Water Environment Association Section Meeting. The meeting will be held at the American Legion Post 532, 1571 Demorest Rd., Columbus, OH 43228 at 11:30 a.m.

OARS is a 20-ft diameter, 170-ft deep tunnel that provides relief to existing OSIS from just north of the Arena District in downtown Columbus to the Jackson Pike Waste Water Treatment Plant. read more

Jeff has over 26 years of engineering experience and is an expert in the design of sanitary sewers, storm sewers, and water distribution systems. read more