EPA's Perspective of Urban Nonpoint Sources

by Dennis N. Athayde, US EPA, Washington, DC, USA,
Carl F. Myers, US EPA, Washington, DC, USA,
Patrick Tobin, US EPA, Washington, DC, USA,

Abstract: The overall goal of the Nationwide Urban Runoff Program (NURP) was to develop information that would help provide local decision makers, States, EPA, and other interested parties with a rational basis for determining whether or not urban runoff is causing water quality problems and, in the event that it is, for postulating realistic control options and developing water quality management plans, consistent with local needs, that would lead to implementation of least cost solutions. In order to ensure good quality data, EPA provided guidance on data collection and required a quality assurance and quality control program for the data collection. One of the products of the NURP was the development of a screening methodology which allows one to estimate in-stream concentrations of urban runoff. This analysis technique computes the magnitude and frequency of occurrence of intermittent stream concentrations of pollutants of interest. Additional aspects of the title subject are discussed in the paper.

Subject Headings: Municipal water | Quality control | Runoff | Nonpoint pollution | Water quality | Water pollution | Urban development | Data collection

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