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General Sessions


Featured Speakers:


Dr. Andrew Sawyers, Director, US EPA Office of Wastewater.
Dr. Sawyers will provide an update on EPA's activities regarding initiatives within EPA which have an impact on the onsite/decentralized wastewater industry.



The Hon. Alan Wheat, Partner, Polsinelli, LLC
Mr. Wheat is a former Member of Congress who leads Polsinelli's Washington Government Relations Team. He will provide an analysis of the legislative and regulatory landscape, initiatives underway which may have an impact on the onsite/decentralized industry, and steps the industry can take to increase its influence in Washington on those initiatives.



Sean Garvin, Secretary, Delaware Natural Resources and Environmental Control
Secretary Garvin will provide an overview as to how Delaware's state environmental agency views on the regulation and management of onsite systems to minimize their impact on Delaware's inland bays and the Chesapeake Bay watersheds.



Chris Bason, Executive Director, Delaware Center for the Inland Bays
Delaware's inland Bays -- Rehoboth, Little Assawoman, and Indian River -- have been designated "Estuaries of national significance" and the Center for the Inland Bays is one of 28 National Estuary Programs established to oversee the implementation of comprehensive conservation and mangement plans. In 2016, the Center released its latest report on the State of Delaware's Bays. Mr. Bason will provide an overview of the condition of the local bays, the role of onsite systems in contributing to its nutrient load, and steps that are being taken to mitigate nutrient pollution from onsite systems.



Vic D'Amato, P.E., Tetratech
US EPA's Chesapeake Bay Program (CBP) created an Expert Panel to review the available science and provide recommendations on how to factor nutrient attenuation into Chesapeake Bay TMDL onsite wastewater treatment system (OWTS) load estimates. In this context, attenuation" is described as nutrient load reductions that occur between the OWTS drainfield and the receiving surface water. Specifically, the Panel revised the CBP's former assumptions of 20 percent total nitrogen (TN) reduction in the soil treatment unit and 60 percent attenuation of TN load between the system and stream.   These revised TN attenuation rates - which represent TN load delivery to groundwater-surface water transitional zones (e.g., riparian areas, hyporehic zone) - have been adopted by the CBP and will be used in subsequent load analyses and crediting programs.  The methodology developed by the Expert Panel is science-based, robust, vetted, and transferable to many other areas interested in assessing nutrient loading associated with OWTS. Development and application of the methodology, limitations and future research needs, and, most importantly, implications for and case studies of its application and improved OWTS management will be discussed.