Project 1097

Factoring Influence Frequency, Magnitude, and Duration in NPDES Permit Conditions

Completed
Principal Investigator
Jerome Diamond
Project Manager
Daniel M Woltering
Contractor
Tetra Tech, Inc.
Water Quality

Research Impact

This report outlines research that identifies more appropriate methods for developing chronic permit limits and better ways to assess regulatory compliance of discharges that exceed a chronic permit limit. This project generated toxicity data for several common wastewater contaminants and many types of pulsed scenarios to support the development of a kinetic model incorporating the interaction of magnitude, duration, and frequency parameters. Published by WERF. 148 pages. Soft cover.

Originally funded as WERF project 02-WSM-3.