Difference between revisions of "Post-construction stormwater Best Management Practices"
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Post-construction [[Glossary#B|Best Management Practices]] (BMPs) are the BMPs that exist following construction of new development or re-development. Post-construction BMPs are typically permanent [http://stormwater.pca.state.mn.us/index.php/Structural_stormwater_Best_Management_Practices structural BMPs] but include other BMPs such as pollution prevention, street sweeping, and pretreatment practices. | Post-construction [[Glossary#B|Best Management Practices]] (BMPs) are the BMPs that exist following construction of new development or re-development. Post-construction BMPs are typically permanent [http://stormwater.pca.state.mn.us/index.php/Structural_stormwater_Best_Management_Practices structural BMPs] but include other BMPs such as pollution prevention, street sweeping, and pretreatment practices. | ||
| − | + | NOTE: Not all the practices indicated below can be used to meet the Construction Stormwater General Permit. The permit states "Where a project’s ultimate development replaces vegetation and/or other pervious surfaces with one (1) or more acres of cumulative impervious surface, the Permittee(s) must design the project so that the water quality volume of one (1) inch of runoff from the new impervious surfaces created by the project is retained on site (i.e. infiltration or other volume reduction practices) and not discharged to a surface water". To meet this requirement, post-construction practices include permanent treatment with infiltration/filtration BMPs, wet sedimentation basins, and/or regional ponds. | |
| − | This page is organized into pretreatment practices (which are required for many structural BMPs), permanent practices as discussed in the [http://stormwater.pca.state.mn.us/index.php/Stormwater_Manual_Table_of_Contents Construction Stormwater Permit], and other practices. | + | This page is organized into pretreatment practices (which are required for many structural BMPs), permanent practices as discussed in the [http://stormwater.pca.state.mn.us/index.php/Stormwater_Manual_Table_of_Contents Construction Stormwater Permit], and other practices (which do not qualify for meeting requirements of the construction permit). |
==[http://stormwater.pca.state.mn.us/index.php/Pre-treatment Pretreatment]== | ==[http://stormwater.pca.state.mn.us/index.php/Pre-treatment Pretreatment]== | ||
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==Permanent practices== | ==Permanent practices== | ||
#Infiltration practices | #Infiltration practices | ||
| − | ##[[Bioretention|Bioinfiltration/bioretention with no underdrain (rain garden)]] | + | ##[[Bioretention|Bioinfiltration/bioretention with no underdrain (rain garden)]] |
| − | ##[[Infiltration | + | ##[[Infiltration]] - includes the following practices: infiltration trench, dry wells, infiltration basin, underground infiltration |
| − | + | ##[[Permeable pavement|Permeable pavement with no underdrain]] | |
| − | ##[[Permeable pavement|Permeable pavement with no underdrain]] | ||
##[[Trees|Tree trench/tree box with no underdrain]] | ##[[Trees|Tree trench/tree box with no underdrain]] | ||
| + | ##[[Dry swale (Grass swale)]] | ||
| + | ##[[High-gradient stormwater step-pool swale]] | ||
##[[Stormwater re-use and rainwater harvesting|Stormwater re-use and rainwater harvesting - captured water routed to one of the above BMPs]] | ##[[Stormwater re-use and rainwater harvesting|Stormwater re-use and rainwater harvesting - captured water routed to one of the above BMPs]] | ||
#Filtration practices - these practices typically achieve little or no infiltration but can be designed to provide some infiltration. Examples include BMPs with a raised underdrain and swales with check dams or a bioretention base. | #Filtration practices - these practices typically achieve little or no infiltration but can be designed to provide some infiltration. Examples include BMPs with a raised underdrain and swales with check dams or a bioretention base. | ||
| − | ##[[Bioretention|Biofiltration/bioretention with an underdrain]] | + | ##[[Bioretention|Biofiltration/bioretention with an underdrain]] |
| − | ##[[Permeable pavement|Permeable pavement with an underdrain]] | + | ##[[Permeable pavement|Permeable pavement with an underdrain]] |
##[[Trees|Tree trench/tree box with an underdrain]] | ##[[Trees|Tree trench/tree box with an underdrain]] | ||
| − | ##[[ | + | ##[[Dry swale (Grass swale)]] |
| + | ##[[Wet swale (wetland channel)]] | ||
| + | ##[[High-gradient stormwater step-pool swale]] | ||
##[[Sand filters]] | ##[[Sand filters]] | ||
| − | ##[[Iron enhanced sand filter (Minnesota Filter)]] | + | ##[[Iron enhanced sand filter (Minnesota Filter)]] |
| − | ##[[Green roofs]] | + | ##[[Green roofs]] |
##[[Stormwater re-use and rainwater harvesting|Stormwater re-use and rainwater harvesting - captured water routed to a filtration BMP]] | ##[[Stormwater re-use and rainwater harvesting|Stormwater re-use and rainwater harvesting - captured water routed to a filtration BMP]] | ||
#Wet sedimentation basin and regional ponds | #Wet sedimentation basin and regional ponds | ||
| − | ##[[Stormwater ponds]] | + | ##[[Stormwater ponds]] |
| − | ##[[Stormwater wetlands]] | + | ##[[Stormwater wetlands]] |
==Other practices== | ==Other practices== | ||
| Line 38: | Line 41: | ||
##[[Yard waste management]] | ##[[Yard waste management]] | ||
| − | + | [[Category:Level 1 - Best Management practices]] | |
Latest revision as of 20:27, 2 February 2023
Post-construction Best Management Practices (BMPs) are the BMPs that exist following construction of new development or re-development. Post-construction BMPs are typically permanent structural BMPs but include other BMPs such as pollution prevention, street sweeping, and pretreatment practices.
NOTE: Not all the practices indicated below can be used to meet the Construction Stormwater General Permit. The permit states "Where a project’s ultimate development replaces vegetation and/or other pervious surfaces with one (1) or more acres of cumulative impervious surface, the Permittee(s) must design the project so that the water quality volume of one (1) inch of runoff from the new impervious surfaces created by the project is retained on site (i.e. infiltration or other volume reduction practices) and not discharged to a surface water". To meet this requirement, post-construction practices include permanent treatment with infiltration/filtration BMPs, wet sedimentation basins, and/or regional ponds.
This page is organized into pretreatment practices (which are required for many structural BMPs), permanent practices as discussed in the Construction Stormwater Permit, and other practices (which do not qualify for meeting requirements of the construction permit).
Pretreatment
Permanent practices
- Infiltration practices
- Bioinfiltration/bioretention with no underdrain (rain garden)
- Infiltration - includes the following practices: infiltration trench, dry wells, infiltration basin, underground infiltration
- Permeable pavement with no underdrain
- Tree trench/tree box with no underdrain
- Dry swale (Grass swale)
- High-gradient stormwater step-pool swale
- Stormwater re-use and rainwater harvesting - captured water routed to one of the above BMPs
- Filtration practices - these practices typically achieve little or no infiltration but can be designed to provide some infiltration. Examples include BMPs with a raised underdrain and swales with check dams or a bioretention base.
- Biofiltration/bioretention with an underdrain
- Permeable pavement with an underdrain
- Tree trench/tree box with an underdrain
- Dry swale (Grass swale)
- Wet swale (wetland channel)
- High-gradient stormwater step-pool swale
- Sand filters
- Iron enhanced sand filter (Minnesota Filter)
- Green roofs
- Stormwater re-use and rainwater harvesting - captured water routed to a filtration BMP
- Wet sedimentation basin and regional ponds
Other practices
This page was last edited on 2 February 2023, at 20:27.