Raymond Ehrhard, P.E., received his B.S. in Civil Engineering from the University of Missouri - Rolla. He has 28 years of experience in the field of environmental and energy engineering. He is a registered Professional Engineer in Illinois and Missouri and a Board Certified Environmental Engineer with the American Academy of Environmental Engineers.

Mr. Ehrhard’s career includes regulatory background working for both DOT and EPA, manufacturing process background working for a major primary metals refiner, and education and research working for a university research department. Mr. Ehrhard’s primary focus is in the areas of water, wastewater, air, solid waste, and energy utilization. He has worked on several national initiatives including energy efficiency technologies, decentralized water and wastewater, and new technology development. Mr. Ehrhard has managed the completion of over 80 reports dealing with environmental technologies and energy utilization.

Courses by the Author:

*Course #*	*# PDH*	*Course Name*
M-4019	4 PDH	Alternative Energy Technology Profiles
M-4012	4 PDH	Biomass Cofiring in Coal-Fired Boilers
C-8013	8 PDH	Continuous Emission Monitoring
C-4018	4 PDH	Controlling VOCs Using Carbon Adsorbers
C-2016	2 PDH	Disinfection Methods for CSO Treatment
C-8010	8 PDH	Distress Pavement Identification
C-6003	6 PDH	Electrostatic Precipitators for Air Pollution Control
C-6006	6 PDH	Emerging Technologies for Biosolids Management
C-8009	8 PDH	Filter Backwash Recycling Rule - Practical Guidance
C-4023	4 PDH	Gas Absorption for Air Pollution Control
C-8014	8 PDH	Materials and Methods of Corrosion Control of Reinforced and Prestressed Concrete
C-4017	4 PDH	Nitrogen Oxides - Abatement and Control
C-4025	4 PDH	Overview of UV Disinfection for the Drinking Water Industry
C-5006	5 PDH	Particulate Control - Baghouses and Filters
C-5008	5 PDH	Radionuclides in Drinking Water - Regulations, Treatment and Residual Disposal
C-8011	8 PDH	Using Membrane Bioreactors (MBR) for Water Reclamation
C-8007	8 PDH	UV Disinfection Evaluation - Technology Options for Wastewater Treatment
C-4027	4 PDH	UV Planning and Design Principles for Drinking Water Treatment
C-8008	8 PDH	Wastewater Subsurface Drip Distribution - Design, Installation and O&M Guidelines
C-8006	8 PDH	Water Treatment Techniques for Contaminant Removal
C-5007	5 PDH	Wet Scrubbers for Particulate Matter Control
M-1025	1 PDH	Wind Turbine Technology Overview

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