ETV is the abbreviation for EPA's Environmental Technology Verification Program which was established to carefully examine and judge the efficacy of a technology. The goal of ETV is to verify the environmental performance characteristics of commercial-ready technology through the evaluation of objective and quality assured data, so that potential purchasers and permitters are provided with an independent and credible assessment of what they are buying and permitting. For more information on ETV see http://www.epa.gov/etv/centers/center5.html.