Wastewater

For more information about our wastewater solutions and services, the following team members are available for contact:

Corporate Market Leaders

	Sami M. Nasr, PhD, PE Corporate Municipal Programs Phone: (301) 731-5622 Ext. 126 Email: NasrSM@obg.com PhD/Environmental Engineering; The University of Connecticut MS/Agricultural Engineering; American University of Beirut BS/Agricultural Engineering; American University of Beirut
Areas of Expertise: Dr. Nasr has over 22 years of experience in municipal and industrial wastewater engineering. As Senior Vice President with O’Brien & Gere, he is currently responsible for the supervision of multidisciplinary teams involved in complex engineering programs. He serves as the firm’s Wastewater Technical Coordinator and is responsible for providing expert guidance to in-house staff and clients. He is also responsible for implementing comprehensive, phased programs that address client needs cost-effectively and with minimal adverse impact. His technical experience includes highly specialized expertise with nutrient removal programs, and he holds several patents related to wastewater treatment technology.
	Paul S. Greene Industrial Business Development Phone: (518) 758-2179 Email: GreenePS@obg.com BS/Chemical Engineering
Areas of Expertise: Mr. Greene, a Vice President with O'Brien & Gere, is an experienced manager, motivator, and leader. He has more than 23 years of experience and a proven track record of growing businesses. He is a strong leader and had provided team-building direction within large, complex organizations; while meeting or exceeding sales budgets. Mr. Greene has a strong knowledge of the water and wastewater treatment industry, excellent technical skills, and is a seasoned business development professional.
Regional Market Leaders

	Robert C. Ganley, PE Northeast Regional Manager Phone: (315) 956-6224 Email: GanleyRC@obg.com MS/Environmental Engineering; Syracuse University BS/Civil Engineering; SUNY at Buffalo AS/Engineering Science; SUNY at Canton
Areas of Expertise: Mr. Ganley has more than 32 years of professional engineering experience. As a Vice President-Project Officer with O’Brien & Gere, he provides overall program direction to engineers and scientists engaged in various environmental engineering projects, including municipal and industrial wastewater management, pumping, collection and conveyance systems, and treatment processes.

	William J. Meinert, PE Mid-Atlantic Regional Manager Phone: (301) 731-1130 Ext. 130 Email: MeinerWJ@obg.com MBA/Finance; University of Pittsburgh MS/Civil & Environmental Engineering; University of Pittsburgh BS/Civil Engineering; University of Notre Dame
Areas of Expertise: Mr. Meinert has more than 17 years of experience in municipal and industrial water and wastewater engineering. He serves as Regional Leader for Mid-Atlantic wastewater projects and is involved in the company’s process technology and regulatory advocacy group. He is versed in the federal and state-level Chesapeake Bay Program (CBP) and Total Maximum Daily Loads (TMDLs) programs, advising clients on environmental regulations and potential impacts.

	Lowell A. Kachalsky, PE Metro Regional Manager Phone: (914) 345-1616 Ext. 11 Email: KachalLA@obg.com MEng/Environmental Engineering; Manhattan College BEng/Civil Engineering; Manhattan College
Areas of Expertise: Mr. Kachalsky leads O'Brien & Gere's Metro New York region Total Water Solutions team. He has nearly 30 years of experience with wastewater and water programs, both large and small. His particular technical skills include hydraulics, membranes, wet weather programs, facility planning, design, and construction. Mr. Kachalsky led the first study of membrane technology for wastewater effluent treatment in the New York City Watershed, and has successfully managed engineering programs valued in the tens of millions of dollars.
	Timothy W. Kraus, PE Midwest Regional Manager Phone: (502) 587-7884 Ext. 24 Email: KrausTW@obg.com BS/Civil Engineering; University of Louisville Speed Scientific School MEng./Civil Engineering; University of Louisville Speed Scientific School
Areas of Expertise: Mr. Kraus leads O'Brien & Gere's Midwest region Total Water Solutions team. He has over 20 years of experience with wastewater programs. Prior to O’Brien & Gere, Mr. Kraus worked at a major municipality overseeing their combined sewer overflow and sanitary sewer overflow programs. Mr. Kraus's technical expertise includes wet weather program management, hydraulics, flow monitoring, and design. Mr. Kraus is an active member of the Water Environment Federation Collection System Committee.
	Peter J. Gibbons West Regional Manager Phone: (860) 388-3004 Email: GibbonPJ@obg.com Civil Engineering; University of New Haven, CT
Areas of Expertise: Mr. Gibbons has more than 38 years of professional experience in the areas of municipal, civil, and sanitary engineering programs. He currently serves as a Vice President and the Municipal Business Development Officer with O’Brien & Gere. Mr. Gibbons is responsible for the firm’s marketing, business development, and customer service to municipal clients throughout the country, and his areas of expertise include water transmission, distribution, and treatment; wastewater collection, conveyance, and treatment; and storm water management and design. With a thorough understanding of issues inherent to municipal and state projects, Mr. Gibbons has helped numerous clients meet their goals by incorporating cost-effective technologies and innovations.
Technology Market Leaders

	Mark R. Greene, PhD Technical Director Phone: (315) 956-6271 Email: GreeneMR@obg.com PhD/Chemical Engineering; Cornell University MEng/Chemical Engineering; Cornell University MBA/Business Administration; University of Connecticut BS/Chemical Engineering; Clarkson University
Areas of Expertise: Dr. Greene has more than 23 years of professional experience, and currently provides leadership and technical guidance for wastewater and ground water treatment applications. His areas of technical expertise include biological water treatment, including aerobic, anaerobic and anoxic operating regimes; solid/liquid separation technologies, including membrane filtration, centrifugation, preparative chromatography, vacuum filtration and sedimentation; and modeling. Dr. Greene is experienced in the areas of municipal and industrial wastewater treatment as well as environmental process research and development. He has performed original research, project management, technical guidance, feasibility evaluations, treatability studies, field demonstrations, full-scale start-ups, computer modeling and process troubleshooting.