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.
	Robert B. Keyser, PE Corporate Federal Programs Phone: (251) 463-5340 Email: KeyserRB@obg.com MA/National Resource Strategy; Industrial College of the Armed Forces MS/Construction Management; University of Florida BS//United States Military Academy
Areas of Expertise: Mr. Keyser leads O’Brien & Gere’s Corporate Federal Programs. He has more than 28 years of experience in engineering, 26 in federal service as an Army Engineer Officer, including service as a construction program manager on the Army Staff in Washington and as Commander of the Corps of Engineers Districts in Philadelphia and Mobile. His experience in conducting military construction, operations, and maintenance projects for the Army, as well as executing projects on behalf of the Army, Air Force, Department of State, and USAID provide Mr. Keyser with capabilities that can assist clients in developing both technical and funding solutions for their water and wastewater challenges.
Regional Market Leaders

	Robert C. Ganley, PE Northeast Regional Manager Phone: (315) 437-6100 Ext. 2224 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.
	M. Robin Chasman, PE Southeast Regional Manager Phone: (706) 548-4881Ext. 203 Email: ChasmaMR@obg.com BSME/Mechanical Engineering; Ohio University, OH
Areas of Expertise: Mr. Chasman currently directs municipal business development for O'Brien & Gere's Southeast region, which includes state / local governments, the higher education / institutional sectors, and the transportation industry. Mr. Chasman has 40 years of engineering experience, including 25 years as owner of a regional civil and environmental engineering and consulting firm. Mr. Chasman's experience has focused primarily on planning, design, and permitting of infrastructure improvements for local, state, and federal government. In particular, Mr. Chasman has extensive experience in transportation, water and wastewater, storm water, and capital improvements planning.
	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) 437-6100 Ext. 2271 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.
	Stephen R. Harper, PhD, PE Technical Director Phone: (770) 205-4788 Ext. 28 Email: HarperSR@obg.com PhD/Environmental Engineering; Georgia Institute of Technology MSE//Environmental Engineering; University of Central Florida BSE//Environmental Engineering; University of Central Florida
Areas of Expertise: Dr. Harper has 28 years of experience performing studies, designs, and operations associated with industrial wastewater treatment. His experience further includes hazardous waste project engineering and management, aerobic and anaerobic treatment, phys/chem treatment, solid waste management, environmental research, leachate recirculation, and storm water collection, conveyance, and treatment.
	Daniel B. Wilkinson, PE Senior Managing Engineer Phone: (919) 783-7777 Email: WilkinDB@obg.com MS/Environmental Engineering; University of Arizona, Tucson BS/Mechanical Engineering; Virginia Polytechnic Institute and State University
Areas of Expertise: Mr. Wilkinson has more than 24 years of professional engineering experience, and specifically wastewater treatment plant design. As a Senior Managing Engineer for O’Brien & Gere he is responsible for the technical accuracy and successful completion of assigned projects. As such, he manages multi-disciplinary project teams, prepares authorizations, and establishes budget costs and schedules. In addition, Mr. Wilkinson maintains personal contact with the client throughout the duration of a project and following completion.
	Abu M. Z. Alam, Sc.D., PE Vice President Phone: (215) 628-9100 Ext. 230 Email: AlamAM@obg.com Sc.D./Civil, Hydraulics and Sanitary Engineering; Massachusetts Institute of Technology MS/Civil, Hydraulics and Sanitary Engineering; Massachusetts Institute of Technology B.Sc./Civil Engineering; Ahsanullah Engineering College
Areas of Expertise: Dr. Alam brings to the firm more than 35 years experience in the field of wastewater engineering processes for pharmaceutical, chemical, mechanical, and biological applications for large-scale wastewater programs throughout North America, South America, Europe, Asia, and Australia. His expertise encompasses all aspects of wastewater engineering program management including studies, planning, design, construction and operations. As Vice President of O’Brien & Gere’s Total Water Solutions, Dr. Alam’s expertise is focused on industrial wastewater treatment systems for pharmaceutical and other industries. This complements the firm’s Total Water Solutions program, which provides Water and Wastewater Engineering Programs for industrial and municipal clients at facilities throughout the U.S. and abroad.