Difference between revisions of "Requirements, recommendations and information for using bioretention BMPs in the MIDS calculator"
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| + | *[[Overview for bioretention]] | ||
| + | *[[Types of bioretention]] | ||
| + | *[[Design criteria for bioretention]] | ||
| + | *[[Construction specifications for bioretention]] | ||
| + | <!--[[Construction observations for bioretention]] | ||
| + | *[[Assessing the performance of bioretention]]--> | ||
| + | *[[Operation and maintenance of bioretention]] | ||
| + | <!--[[Calculating credits for bioretention]]--> | ||
| + | *[[Cost-benefit considerations for bioretention]] | ||
| + | <!--[[Additional considerations for bioretention]]--> | ||
| + | <!--[[Links for bioretention]]--> | ||
| + | *[[External resources for bioretention]] | ||
| + | *[[References for bioretention]] | ||
| + | *[[Requirements, recommendations and information for using bioretention BMPs in the MIDS calculator]]</noinclude> | ||
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[[Category:MIDS calculator requirements]] | [[Category:MIDS calculator requirements]] | ||
Revision as of 16:44, 22 August 2013
Below is a summary of requirements, recommendations and other information for using the Minimal Impacts Design Standards (MIDS) calculator for bioretention BMPs. Links to MIDS pages and the MIDS calculator are included at the bottom of this page.
Requirements
Warning: The following are requirements of the Minnesota Construction Stormwater General Permit
- 3 foot separation from the bottom of the bioretention system to the seasonal high water table
- Use the most restrictive infiltration rate within 3 feet of the bottom of the BMP
- Drawdown time of 24 hours when the discharge is to trout streams
- For measured infiltration rates, apply a safety factor of 2
- Pretreatment
Recommendations
Caution: The following are recommendations for inputs into the MIDS calculator
- 5 acres or less for contributing area
- Maximum ponding depth of 18 inches, reduced to 6 inches if there is no site information
- Field tested infiltration rates rather than table values
Information
Information: The following information may be useful in determining inputs for the MIDS calculator
- Guidance on determining infiltration rates
- Information on site constraints (shallow soil, karst, etc.)
- Information on assessing BMPs
- Information on design metrics (high flow bypass, ponding depths, drawn down)
- Guidance on pretreatment
- Information on soil mixes
- Plant information, including species list that show water tolerance, potential effects of different species on infiltration rates, planting guidance
- Construction specifications
- Information on operation and maintenance of bioretention BMPs.
Links to MIDS pages
- Performance goals for new development, re-development and linear projects
- Flexible treatment options
- Ordinance goals
- MIDS calculator
Related pages
- Overview for bioretention
- Types of bioretention
- Design criteria for bioretention
- Construction specifications for bioretention
- Operation and maintenance of bioretention
- Cost-benefit considerations for bioretention
- External resources for bioretention
- References for bioretention
- Requirements, recommendations and information for using bioretention BMPs in the MIDS calculator