Our Instructors

John Whitescarver, QEP, CSI

After serving for 10 years on the EPA team that developed the NPDES program, John continues as a national expert in NPDES policy. He is an EPA advisor, a consultant to industry, an expert witness, and manages 50 inspector training events a year; including the Florida Department of Environmental Protection’s Stormwater Management Inspector Program. John lives in Maryland and Florida.

Paul Davis, PE, Tennessee Water Pollution Control Director (Retired)

Retired from TDEC after 38 years of service, including 24 years as Director of Water Pollution Control, Paul is a dedicated environmentalist who understands the complexities of stormwater permitting and permit enforcement. Paul is a licensed engineer with a BS in Engineering Science and a MS in Water Resources.  He is a US Masters Swimmer and lives in Tennessee.

Dan Ahern, PE, BCEE, U.S. EPA Region 4 (Retired), Stormwater Utility Manager, Beaufort, SC (Retired)

Retired from the U.S. EPA after 35 years of service, and recently retired from Beaufort County, SC where he served as Stormwater Utility Manager.  During his tenure in Beaufort County, he oversaw the adoption of runoff volume controls and has published a number of articles on post-construction controls.  Dan serves on a WEF national stormwater committee and has degrees in Civil Engineering and a MS in Sanitary Engineering.  He lives and gives flying lessons in South Carolina.

David Lyons, PE, CSI

Retired from US EPA Office of Enforcement and Compliance Assurance, Dave directed EPA’s water enforcement activities and developed the NPDES Inspection Manual. Dave also conducts compliance evaluation inspections under EPA contracts to states. He lives in Northern Virginia and Florida.

Marcia Willhite, M.S. – Chief, Bureau of Water, Illinois Environmental Protection Agency (Retired)

Marcia served as Chief of the Bureau of Water at Illinois EPA for almost 15 years. In this capacity, she managed programs in water pollution, drinking water, watershed management, groundwater protection and water infrastructure loans.  Marcia worked with other states and U.S. EPA on various water program policy and implementation issues, serving as national president of the Association of Clean Water Administrators in 2006-07.  Marcia resides in beautiful Door County, Wisconsin and continues to work on water quality protection.

Gianna Castro Muniz, CSI

Gianna is President of C&G Environmental Group in Puerto Rico. She was previously a chemist with the Puerto Rico Aqueduct & Sewer Authority. She has a Bachelor of Science degree in chemistry from the Catholic University of Puerto Rico, and a Masters of Science from the University of Lowell in Massachusetts.

Jeff Hutton

Jeff is a retired Environmental Protection Specialist from the Illinois Environmental Protection Agency.  He also served as a Technical Assistant at the Illinois Natural History Survey.  Jeff has a Bachelor’s degree majoring in Zoology with a minor in Chemistry from Eastern Illinois University.  As an Environmental Protection Specialist, Jeff worked on a number of tasks including reviewing permits issued by the Bureau of Water, reviewing the general NPDES Permit Program for stormwater, and dealing with issues regarding the land application of sludge containing technically enhanced radiation.  He also reviewed documentation supporting Federal and State construction grants for water and sewer facilities.