Calculating stormwater volume and pollutant reductions and credits Revision as of 16:49, 24 December 2014 by Mtrojan (talk | contribs)(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff) Calculating stormwater volume and pollutant reductions and credits

The Minnesota Pollution Control Agency is currently working with a Contractor to develop information for volume and pollutant credits for most of the BMPs discussed in this manual. We anticipate this information will incorporated into the Manual by early summer, 2014. Draft versions of this information can be found for the following BMPs.

• Permeable pavement
• Tree boxes and tree trenches
• Green roofs

Information on using the Minimal Impact Design Standards calculator to calculate credits for volume, phosphorus and total suspended solids.

• Requirements, recommendations and information for using bioretention with no underdrain BMPs in the MIDS calculator
• Requirements, recommendations and information for using bioretention with an underdrain BMPs in the MIDS calculator
• Requirements, recommendations and information for using swale without an underdrain as a BMP in the MIDS calculator
• Requirements, recommendations and information for using swale with an underdrain as a BMP in the MIDS calculator
• Requirements, recommendations and information for using swale side slope as a BMP in the MIDS calculator
• Requirements, recommendations and information for using wet swale as a BMP in the MIDS calculator
• Requirements, recommendations and information for using sand filter as a BMP in the MIDS calculator
• Requirements, recommendations and information for using trees as a BMP in the MIDS calculator
• Requirements, recommendations and information for using trees with an underdrain as a BMP in the MIDS calculator
• Requirements, recommendations and information for using green roofs as a BMP in the MIDS calculator
• Requirements, recommendations and information for using permeable pavement BMPs in the MIDS calculator
• Requirements, recommendations and information for using stormwater pond as a BMP in the MIDS calculator
• Requirements, recommendations and information for using stormwater wetland as a BMP in the MIDS calculator.
• Requirements, recommendations and information for using Other as a BMP in the MIDS calculator
• Requirements, recommendations and information for using infiltration basin/underground infiltration BMPs in the MIDS calculator
• Requirements, recommendations and information for using Harvest and re-use/cistern as a BMP in the MIDS calculator

The Manual also contains information on models that can be used to calculate credits for volume and pollutants. Information on models is found on the following pages.

• Available stormwater models and selecting a model
• The Simple Method for estimating phosphorus export

The original Manual contained credit information for Better Site Design.