Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Environmental Assessment of Industrial Discharges Based on Multiplicative Models.
Author Leadbetter, M. Ross ; Tucker, W. Gene ;
CORP Author Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1981
Report Number EPA-600/J-81-490;
Stock Number PB82-154972
Additional Subjects Environmental surveys ; Mathematical models ; Industrial wastes ; Assessments ; Concentration(Composition) ; Reprints ; Numerical solution
Library Call Number Additional Info Location Last
NTIS  PB82-154972 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 7p
The paper describes a method of environmental assessment of industrial discharges based on multiplicative models. The severity, S, of a substance in an industrial discharge is defined as the ratio of substance concentration, either at the source or at some ambient point of interest, to a maximum specified 'safe' concentration level. The source is considered 'clean' unless S is expected to exceed unity on more than a given acceptably small proportion of time. Otherwise, it is 'dirty'. A source is classified as clean or dirty based on (a) measurements of factors such as stack emission characteristics and (b) possible knowledge of the statistical properties of other factors (such as meterology). Standard statistical decision techniques are used, with some novelty, to take account of the forms of variation present (time fluctuations, measurement errors, etc.) and to best incorporate existing prior knowledge of the statistical parameters involved. Log-normal distributional assumptions are used, coupled with multiplicative transport models in ambient cases.