He has been a state official and regulator in his role as Assistant Secretary for Natural Resources and Director of Environmental Management (1979-80), State of North Carolina. He was responsible for managing the Clean Water Act programs in permitting, enforcement, and construction grants. Had responsibility for river basin water quantity and quality, and groundwater management. He also has experience in public works and utility engineering as co-founder and Principal of Sellards & Grigg Inc., Denver. He was engaged in a number of municipal engineering projects involving water supply, stormwater, and public works.
In professional involvement, he is a registered PE in three states. He has served on the Board of Directors of the American Public Works Association and National Research Council Board for Infrastructure and the Constructed Environment. He is a former president of the Fort Collins Water Board and a former two-term member Fort Collins Transportation Board. He has also served on numerous professional association committees. He is a Charter Member of the Pan American Academy of Engineering.
He has recently completed Water Research Foundation projects on: integration of cost of failure into risk assessment, dual water systems, secondary effects of corrosion control on distribution systems, integrity of water distribution systems, predicting main breaks, and surviving disasters in water utilities. He was an expert advisor to the WaterRF on water supply infrastructure.
He has a total of some 350 publications, including recent books on Water Finance, Urban Water Infrastructure and Infrastructure Engineering and Management, by John Wiley & Sons and Water and Sewer Infrastructure Management by CRC Press/Lewis Publishers.
His recent university service includes chairing a University Water Response Group (2011-2012), member of the First General Scholarship Selection Board (2002-present) Office of International Programs, College Distance Education Committee, Department Committee on Undergraduate Instruction. He has been a member, Faculty Council Committee on Governance (2005-2008), member and chair of search Committees, Co-Chair Faculty-Staff drive 2009-2010, on a number of Department, College and University Committees.