Air Quality and the ETV by EPADocs


									Air Quality and the ETV
Dr. T. G. Brna, Sr. Project Engineer, ORD/ NRMRL, U.S. Environmental Protection Agency, MD E305-01, Research
Triangle Park, North Carolina 27711, phone 919-541-2683, fax 919-541-0554, email
R. G. Fuerst, Chemist, ORD/NERL, U.S. Environmental Protection Agency, MD D205-03, Research Triangle Park,
North Carolina 27711, phone 919-541-2220, fax 919-541-1153, email, Dr. D. A. Kirchgessner,
Senior Res. Scientist, ORD/NRMRL, U.S. Environmental Protection Agency, MD E305-02, Research Triangle Park,
North Carolina 27711, phone 919-541-4021, fax 919-541-7885, email kirchgessner.david@e

     With the advice and guidance of public stakeholder groups, the Environmental Technology Verification (ETV)
Program prioritizes technology areas for verification to address the performance information needs of technology buyers
and regulatory communities. Through the ETV program, vendors are invited to participate in a verification test that will
demonstrate the performance of their instrument or technology. The information can then be used for marketing
purposes. To add to its limited funding, the ETV program partners with various interested environmental groups to
cooperate in evaluating technology areas of mutual interest.
     Of the six ETV Centers, three verify the performance of technologies that characterize or improve the quality of air.
One specializes in innovative or improved pollution-control technology, one in advanced monitoring instrumentation,
and one in the control or prevention of greenhouse gases. A description of a current focus area for each of the Centers’
verifications follows:
     Air Pollution Control Technology Center: Research Triangle Institute is EPA’s partner under a cooperative
agreement to manage the ETV Air Pollution Control Technology Center. Interest areas include the control of fine
particulate matter (PM), nitrogen oxides (NOx), volatile organic compounds (VOC), and other hazardous air pollutant
emissions. Concerning fine PM, verifications have been completed for paint overspray arrestors used in aerospace
manufacturing, rework facilities, and baghouse filtration products. Concerning NOx control, verifications have been
completed for emulsified fuel oils and catalytic combustion on a natural-gas-fired 1.5MW gas turbine whose mean NOx
emission was 1.13 parts per million by volume of dry gas during short-term field testing. Current work focuses on dust
suppressants for unpaved roads, VOC emission control from industrial processes, control of diesel engine pollutant
emissions, as well as continued work in areas of the completed verifications.
     Advanced Monitoring Systems (AMS) Center: Battelle is EPA’s partner under a cooperative agreement to
manage the ETV Advanced Monitoring Systems Center. Ambient PM has always been a concern for the breathing
public. The U.S. Government has long expressed a concern about the effect of PM on the health and welfare of its
citizens. With the enactment of the Clean Air Act (with amendments), the Environmental Protection Agency (EPA) has
set standards to regulate PM concentrations. In 1999, the AMS Center conducted a two-phase test of 13 different
technologies. Phase I testing was held in Pittsburgh, PA, with Phase II testing held in Fresno, CA. This two-phase
verification test was conducted to demonstrate and assess the effect of seasons, temperature, humidity, PM
concentration, and chemical composition. The results of the verification testing can be found on the ETV Web site at: Many users and regulators find this information very useful when
purchasing and recommending use of PM monitors.
     Green House Gas Technologies: Southern Research Institute is EPA’s partner under cooperative agreement to manage
the ETV Green House Gas Reduction Center. The U.S. Department of Energy estimates that, by 2010, between 10% and
40% of new demand for electricity could be supplied by small-scale, distributed, electrical power-generation (DG)
technologies. The particular appeal of these technologies is that (1) they are often small enough to be affordable by
consumers or by operators of commercial, industrial, or agricultural sites; ( 2) they are suitable for remote applications
where conventional power is unavailable or uneconomical; (3) they can be easily scaled to the specific needs of the user; (4)
they can be operated only as needed and under the control of the user; and (5) because they are distributed, significant
sources of our power generation will eventually be relatively unassailable. DG technologies include microturbines, fuel
cells, Stirling engines, and conventional spark-ignition and diesel engines, any of which can be operated in the more
efficient combined heat and power mode. Verifications typically address energy conversion efficiency, criteria pollutant and
greenhouse gas emission rates, pollutant and greenhouse gas reductions, and costs at a minimum. Results of verifications
completed thus far can be found at or at

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