Our Staff


Dean C. Ringle, P.E., P.S.

Executive Director

Dean staff photoDean C. Ringle, P.E., P.S., began as CEAO's Executive Director in July 2017. Prior to joining CEAO, Mr. Ringle worked at the Franklin County Engineer’s Office for more than 36 years, with the last 17 years serving as the Franklin County Engineer. Throughout his career at the engineer’s office, he held positions in construction, surveying, and overall engineering management. During those years Mr. Ringle also served in various capacities and on various committees for CEAO, in addition to being recognized as the 2011 County Engineer of the Year by CEAO and the 2013 National Urban County Engineer of the Year by the National Association of County Engineers. Mr. Ringle received his Bachelor of Science Degrees in Civil Engineering and Surveying from The Ohio State University and is a registered Professional Engineer and Professional Surveyor in Ohio. Mr. Ringle is the 2019-20 National Council of Examiners for Engineering and Surveying (NCEES) president. He spent 25 years as an adjunct faculty member at The Ohio State University’s College of Engineering, and serves on the boards of the Ohio State Board of Registration for Professional Engineers and Surveyors, the National Council of Examiners for Engineering and Surveying and the OSU Civil, Environmental and Geodetic Engineering Advisory Board.

Amy Lowe

Communications Manager

Amy staff photoAmy joined the CEAO team in August 2017 bringing with her over 18 years of work experience in the public sector. Prior to joining CEAO, Amy worked as the Director of Communications for the Franklin County Engineer's Office. She also spent 8 years as the Community Affairs Coordinator working in community relations, members services, event planning, website design and social media for the Mid-Ohio Regional Planning Commission (MORPC). She holds a Bachelor of Business Administration Degree from Mount Vernon Nazarene University. Amy is the primary contact for CEAO communications activities including working with the news media, social media platforms & the CEAO website. Amy also organizes CEAO conferences and events and provides support for other general duties or special projects, as needed. 

Michele Risko

CSTP/LBR Program Manager

Michele staff photoMichele started with CEAO in July of 2004 as the CSTP/LBR Program Manager.  Her primary responsibility is to work with the CSTP/LBR Committee and ODOT to administer the CSTP and LBR programs.  This includes ensuring that projects are selected in accordance with program criteria, that projects are delivered according to schedule, and that the programs remain fiscally balanced.  Prior to joining the CEAO, she worked for six years in the environmental office of ODOT, District 7.  Michele has a Bachelors Degree in Biochemistry with a second major in History from the University of Dayton.  She also has an MBA with a concentration in Project Management from Wright State University.

Kari Gianangeli

Office Assistant

Kari Gianangeli

Kari joined the CEAO staff in March of 2020. She has a background in legal assisting and has worked in law firms since 2000. Kari graduated cum laude from Columbus State in 2012 with an Associate of Arts degree. She provides administrative support to CEAO by assisting with conferences, accounting functions and general office duties.



Mark Stockman

Bridge QA/QC Consulting Engineer

Mark Stockman graduated Cum Laude from the University of Toledo in 1979 with a degree in Civil Engineering.  He was a Deputy Engineer with Henry County, a Bridge Engineer with Paulding County and worked as Street Maintenance Engineer for the City of Columbus.  He then served as the Paulding County Engineer from 1992-2004.  He then went to Allen County as Chief Deputy Engineer and in 2009 went to work for CEAO as the Federal Bridge QA/QC Engineer.

Ben Sigall

Legal Counsel 

Ben Sigall is a Senior Attorney with Mac Murray & Shuster. A member of the Litigation Team, Ben brings more than a decade of wide-ranging experience at large, regional firms and as a prosecuting attorney for numerous entities, including the Ohio Attorney General’s Office. His practice focuses on defending businesses in complex civil and class action litigation, primarily related to consumer protection and privacy concerns.

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Michael T. Evans

Legislative Consultant

Michael T. Evans, President of AP Consulting, is the contract lobbyist for CEAO.  With 8+ years of lobbying experience in advocating and advising trade associations and elected officials with interests at the local, state and federal government levels, Michael has extensive knowledge of both issue and candidate campaign strategy. Her education includes a M.B.A – Specialization in Project Management from Ashland University, Post Graduate Degree – Certified Paralegal from Capital University Law School, and a B.S. in Communication from Ohio University.