New Release - Technical Bulletin No 9

Many Bay states and localities are struggling with how to analyze which combination of urban stormwater practices can most cost-effectively meet their target nutrient load reductions under the Chesapeake Bay TMDL.

To meet this need, CSN has just released a draft technical bulletin for external peer review. Technical Bulletin No. 9 synthesizes existing research on nutrients in stormwater and the performance different stormwater BMPs in removing them.

The bulletin also proposes interim removal rates for more than a dozen urban BMPs, and outlines simple computational methods to do nutrient accounting. Most importantly, the Bulletin outlines a 12 step process to find your easiest and cheapest opportunities to earn local nutrient reduction credits.

The Bulletin is open for comment until October 15, and we encourage stormwater managers at all levels of government to send in your comments to watershedguy@hotmail.com.

You can download this new release here: Technical Bulletin No. 9