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Main Title Use of probabilistic information in the water quality based approach /
Author Jaworski, Norbert A.
Other Authors
Author Title of a Work
Mount, Donald I.
CORP Author Environmental Research Lab.-Duluth, MN.
Publisher [U.S. Environmental Protection Agency, Environmental Research Laboratory],
Year Published 1984
Report Number PB84-220326; EPA 600-D-84-192
Stock Number PB84-220326
OCLC Number 50076695
Subjects Urban runoff--Mathematical models. ; Water quality management--Mathematical models.
Additional Subjects Water quality management ; Aquatic animals ; Protection ; Safety ; Sewage treatment ; Cost analysis ; Standards ; Licenses ; Waste disposal ; Statistical analysis ; Allocations ; Operations ; Maintenances ; Stream flow ; Toxicity ; Water quality criteria ; Discharge(Water) ; Low flow
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-D-84-192 Headquarters Library/Washington,DC 08/29/2017
ESAD  EPA 600-D-84-192 Region 10 Library/Seattle,WA 06/28/2002
NTIS  PB84-220326 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 20 pages : illustrations ; 28 cm
During the past two decades, implementation procedures in wastewater management often resulted in a large margin of safety being incorporated into the use of water quality criteria for the protection of aquatic life and its uses. Wasteload allocation design conditions, such as the use of seven-day, ten-year low flow, gave assurances of instream concentrations well below the water quality criteria for a large percentage of time. Present-day economic conditions and the increasing cost of advanced wastewater treatment are necessitating a re-examination of how water quality criteria are being used in the water quality based approach for establishing effluent limitations. The relationships between water quality criteria and other components of the water quality based approach are identified. The need for a better defined and more consistent use of statistical information is suggested not only in the development of water quality criteria but also for the entire water quality based approach. Intensity, duration, and frequency of occurrence (return period) appear to be three common statistical parameters of the six-step water quality based approach.
"EPA 600-D-84-192." "1984."