Establishment of permit limits for mill effluent |
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Authors: | Bradford R. Crain Mike Woods |
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Affiliation: | (1) Department of Mathematical Sciences, Portland State University, P.O. Box 751, 97207 Portland, Oregon, USA;(2) Mames River Corporation, Wauna Mill, 97016 Clatskanie, Oregon, USA |
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Abstract: | Various governmental regulatory agencies are responsible for establishing regulations on the discharge of chlorinated organic compounds from pulp and paper mills. The procedures for setting permit limits are the basic topic of this article. Different methods of determining permit limits are set forth and discussed in a number of references, including documents of the Environmental Protection Agency. This paper discusses in detail the application of one particular methodology—the lognormal model approach. In this paper we utilize a real data set and include the necessary calculations required to set up permit limits. The basic tenets of the permit process are such that if limits are set too low, operators who are in full regulatory compliance will still be frequently cited, and if limits are set too high, operators who are not in compliance will seldom if ever be cited. Thus there is a great need for these effluent limits to be determined with great care, both to protect the environment receiving the wastewater and the industry producing the wastewater. |
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Keywords: | Permit limits Regulatory compliance Lognormal statistical model Effluent control |
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