John C. Hall, the founder and president of Hall & Associates, focuses on innovative solutions for modification of and compliance with environmental mandates under the water, air, and hazardous waste programs. Mr. Hall is an expert on water quality criteria and standards, NPDES permitting, compliance issues, and coalition building. He represents industries, municipalities, and associations throughout the country and has substantial experience in environmental permitting, site-specific standards development, dispute resolution, regulatory impacts analysis, watershed planning, nutrient trading, legislative drafting, mathematical modeling of water quality standards, and treatment plant performance.

Mr. Hall received his B.A. degree in mathematics from St. John's University in 1978 and his M.S. degree in environmental engineering from Manhattan College in 1980. He obtained his law degree from George Washington University in 1984.
William T. Hall is an environmental engineer with diverse engineering and permitting experience in water quality, wastewater treatment, NPDES permitting, and mathematical modeling since completing his Master’s Degree. He has extensive experience in evaluating water quality-based effluent limitations, water quality criteria compliance, nutrient criteria development, and TMDLs for municipal and industrial clients. He is primarily responsible for the preparation of technical reports to support the firm’s legal positions on these matters. Most of his recent work focuses on evaluating nutrient criteria development and implementation in TMDLs. He also is an active participant in state committees attempting to develop scientifically defensible numeric criteria for nutrients.

Mr. Hall received his B.S. degree in biology from the City College of New York in 1976 and his M.S. degree in Environmental Engineering from Manhattan College in 1982.
Gary B. Cohen has been involved in the practice of environmental law for nearly twenty years. He represents clients throughout the country on Clean Water Act-related issues including NPDES permit negotiation, NPDES permit appeals, defense of enforcement actions, pretreatment program review and development, multi-jurisdictional agreements, industrial user contracts, development of enforcement response plans, and development of permits for industrial users. In addition, his expertise includes NPDES and pretreatment litigation defense, regulatory counseling, Section 404 wetlands permitting, underground injection, solid waste and sludge regulation, facility siting and hazardous waste counseling and litigation.

Mr. Cohen received his law degree from the State University of New York (Buffalo). Mr. Cohen is a member of the New York, California, and Washington, D.C. bar associations.
Benjamin M. Kirby joined Hall & Associates as an environmental engineer after summer internships in 2012 and 2013. Mr. Kirby researches and evaluates NPDES permit limit derivations, provides technical assessments of state and federal water quality criteria and standards development, and prepares statistical analyses of water quality and wastewater effluent data. In addition, Mr. Kirby manages the firm’s FOIAs, prepares regulatory alerts, and provides legal research.

Mr. Kirby graduated with honors from Virginia Tech in 2012, receiving a B.S. Civil and Environmental Engineering with a minor in green engineering. He will complete his M.S. Civil and Infrastructure Engineering with a focus in environmental and water resources engineering from George Mason University in December 2017. Mr. Kirby served as project manager for GMU’s inaugural VWEA Student Design Competition team which earned first place in 2017. He continues to serve as the 2017-18 GMU-VWEA Secretary.
Christopher L. Rissetto joined Hall & Associates after more than 35 years in the public and private practice of law, first with the U.S. Environmental Protection Agency, and then with private law firms. Mr. Rissetto worked extensively with Clean Water Act issues involving NPDES permitting, compliance (including defense of State, Federal, and Citizen Suit enforcement actions), wetlands jurisdiction and remedies, and funding of complex water and wastewater treatment facilities. He has also worked with other environmental laws involving clean air, pesticides, and safe drinking water. Mr. Rissetto’s clients have included large and small municipal governments, special utility districts, non-profit entities, non-governmental organizations, and private corporations. He represents clients before Congress, State governments, Federal and State courts, and various Executive Branch agencies. In addition to environmental subject areas, Mr. Rissetto has a developed expertise in Federal assistance agreements, such as grants, and direct contracting and procurement, including protests, program audits, and administrative law and remedies.

Mr. Rissetto received his B.A. degree in history from San Francisco State University (1968), his M.A. in political science from the University of California, Davis (1970), and his Juris Doctor law degree from the University of Wisconsin (1973). He licensed to practice in the District of Columbia, Virginia, and Wisconsin, and in numerous Federal courts, including the U.S. Supreme Court, and before the U.S. Court of Federal Claims.