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Tetra Tech helps our clients understand the requirements of the U.S. Environmental Protection Agency’s 2015 effluent limitations guidelines (ELG) for steam electric power generation for their business. We offer a full spectrum of scientific and engineering expertise to both plan and design wastewater treatment processes and facilities that align with a utility’s specific waste stream chemistry and operations. We lead with science, because stringent regulations, especially the selenium ELG limits, require careful consideration of optimal chemical and biological processes to remove contaminants.