950 resultados para nonpoint-source pollution control
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Item 431-I-12
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"EPA-600/5-78-005."
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Bibliography: p.188.
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"Project: 90/009."
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"23 April 1987."
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Issued jointly with the Office of Research and Development, EPA.
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At head of title : 93d Cong., 2d sess. House report no. 93-1012.
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Rev. ed. of the Office of Environmental Assessments' Technology characterizations (1981). Includes 13 additional ECIRs (Environmental Characterization Information Reports).
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"B-236358.3"--P. [1]
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Senior thesis written for Oceanography 445
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DUE TO COPYRIGHT RESTRICTIONS ONLY AVAILABLE FOR CONSULTATION AT ASTON UNIVERSITY LIBRARY AND INFORMATION SERVICES WITH PRIOR ARRANGEMENT
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Exhaust emissions from diesel engines are a substantial source of air pollution in this country. In recognition of this fact, the Environmental Protection Agency has issued strict new regulations due to take effect -in 1991 and 1994 that will drastically reduce the amount of some pollutants these engines will be allowed to emit. The technology is not currently available to produce diesel engines that can meet these regulations without large penalties in engine performance and efficiency. One technique that offers promise of being able to reduce emissions from both existing engines and new engines is alcohol fumigation.