TSS Reduction Guidance Issued By WDNR

The Wisconsin Department of Natural Resources (WDNR) has recently published guidance to be used by municipalities to demonstrate compliance with total suspend solids reduction requirements. Under Wisconsin Rules NR 151.13 (2), municipalities subject to the municipal WPDES stormwater permit requirements must, to the maximum extent practicable, implement a 20% and a 40% reduction in total suspended solids in runoff that enters waters of the state as compared to no controls, by March 10, 2008 and March 10, 2013, respectively.

The updated guidance assists affected municipalities to understand what areas under the municipalities' jurisdictions will be included in this requirement, what is meant by "no controls" and "with controls", and what methods are acceptable for making these calculations.

Caltha LLP provides expert environmental consultant services in Wisconsin to obtain air and wastewater permits, evaluate regulatory requirements, and to develop cost effective compliance programs.

For further information, contact Caltha LLP at:

Email: info@calthacompany.com

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