The Water Tower's Research Advisory Committee (RAC) is comprised of high-caliber experts in the water field who help guide TWT's applied research agenda and prioritize projects each year. Learn about the members of the RAC below. For questions regarding the RAC or TWT research, please contact Kristan@theh2otower.org.
Christopher A. Impellitteri, Ph.D. (RAC Chair and TWTI Board Member)
Dr. Impellitteri serves as the Associate National Program Director for EPA Office of Research and Development’s Safe and Sustainable Water Resources Research Program. He leads EPA research on water treatment and infrastructure that focuses on comprehensive water management in support of EPA’s Program and Regional Offices and State partners for protecting water resources. His current research focuses on drinking water (lead and PFAS), wastewater (SARSCoV2 monitoring, biosolids management), water reuse (fit-for-purpose reuse), and stormwater management (enhanced aquifer recharge, green infrastructure).
For over 20 years, Katherine Atteberry has worked for government and the private sector to plan and implement stormwater management and watershed protection programs. Currently, she is the Stormwater Planning Manager for the Metropolitan North Georgia Water Planning District. In this role, she provides planning and regulatory support to improve and preserve water quality through community partnerships, education, and policy guidance.
Charles Bott, Ph.D., P.E., BCEE
Dr. Charles B. Bott joined HRSD in 2009 and is the Director of Water Technology and Research. He manages technology innovation and research and development for HRSD’s sixteen wastewater treatment plants (249 MGD combined capacity) and collection/conveyance systems. Dr. Bott is also an Adjunct Professor in the Departments of Civil and Environmental Engineering at Virginia Tech and Old Dominion University.
Gail Cowie, Ph.D.
Dr. Gail Cowie has over thirty years of experience with water management, public participation, and environmental policy in Georgia. She is currently a Senior Research Professional at the Georgia Water Planning and Policy Center at Albany State University, with responsibilities for applied research and outreach on some of Georgia’s most pressing water management challenges. Her experience includes 13 years with the Georgia Environmental Protection Division where she had a key role in developing the state’s regional water planning program and managed the modeling and stakeholder involvement that finalized the Total Maximum Daily Load allocation for Lake Lanier.
Michael Diaz, P.E., M.S.
Michael Diaz's career spans over twenty years in the water and wastewater industry. It began at the University of Georgia by researching and developing a pilot-scale mobile UV-enhanced ozonation system for the reuse of food-processing wastewater. After working at UGA, his studies and research were applied to the municipal water and wastewater field as a Civil Engineer with a Professional Engineer licensure. Michael is passionate about preserving our water resources for future generations. He currently serves as Associate VP and Area Manager at Arcadis.
Chris Haney, P.E.
Chris Haney is a Senior Vice President at Wade Trim with 25 years of industry experience building client-focused teams and delivering major water, wastewater, stormwater, and water reuse projects in the United States. He began working with Gwinnett County in 2001 and is a sixth generation Gwinnettian. Chris’s design work encompasses more than 50 water and wastewater treatment facilities, some with capacities in excess of 100 MGD.
Kevin Middlebrooks brings over 16 years of experience in a variety of water resources fields including water resources planning and permitting, stormwater and watershed management, and ecosystem restoration. Kevin works closely with utilities, businesses, governments, regulatory agencies, and stakeholders to understand and comply with water- and environmental-related regulatory requirements and develop creative, cost-efficient solutions to improve water quality and enhance communities. Kevin is a Senior Associate at Hazen and Sawyer in the Atlanta office and a native Gwinnettian.
Jason Mingo is a skilled and passionate professional active within the water sector for 10+ years. He led the development of key forums and programs for integrated water management water management and water technology research, development and innovation. He has strong leadership and integrity skills with 7+ years’ management experience across contract management, strategy and program development. He currently serves as Manager Environment and Technology Research at Water Services Association of Australia.
Stéphanie Rinck-Pfeiffer has been involved in the water industry for the past 22 years working predominantly in Research and Innovation, and has managed multi-disciplinary research programs at a State, National and International level, encompassing government, industry and not-for-profit sectors mainly in Europe and Australia. She currently serves as Managing Director of the Global Water Research Coalition.
Orren Schneider, Ph.D., P.E.
Dr. Orren Schneider is an expert in evaluation and design of advanced coagulation, clarification, filtration, disinfection, and membrane technologies for water treatment. He utilizes data analytics for the optimization of water quality and efficiency at treatment plants and is a go-to person for problem solving, implementing solutions at existing facilities, and helping to launch new pilot plants and operations.
Rebecca Shelton, P.E.
Rebecca Shelton has over twenty three years of progressively responsible experience in municipal infrastructure with expertise in the areas of utility management, public outreach and media relations, strategic planning, operations & maintenance, organizational management, budgeting and business plan preparation, regulatory compliance, capital program development and delivery, asset management, and building effective teams. She currently serves as Assistant Director at Gwinnett County Department of Water Resources.
Eva Steinle-Darling, Ph.D., P.E.
Dr. Eva Steinle-Darling is Director of the Water Reuse Technical Practice at Carollo and is also leading the company’s response to addressing clients’ challenges with per- and polyfluoro alkyl substances, or PFAS. Her areas of technical expertise include membrane processes, advanced oxidation, filtration, disinfection, and other advanced treatment processes for microconstituent removal and management of microbial risks and has been responsible for over $2 million in applied research on those topics.
TWT's Lake Lanier Watershed Five-Year Research plan was developed with input from stakeholders and technical experts to provide a roadmap of applied research projects with the goal of protecting and improving Lake Lanier and it's watershed.