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− | Post-construction [[Glossary#B|Best Management Practices]] (BMPs) are employed following new development or re-development. Post-construction BMPs are typically permanent structural BMPs but | + | Post-construction [[Glossary#B|Best Management Practices]] (BMPs) are employed following 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. |
The [http://stormwater.pca.state.mn.us/index.php/III._STORMWATER_DISCHARGE_DESIGN_REQUIREMENTS#III.D._PERMANENT_STORMWATER_MANAGEMENT_SYSTEM Construction Stormwater General 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. | The [http://stormwater.pca.state.mn.us/index.php/III._STORMWATER_DISCHARGE_DESIGN_REQUIREMENTS#III.D._PERMANENT_STORMWATER_MANAGEMENT_SYSTEM Construction Stormwater General 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. |
Post-construction Best Management Practices (BMPs) are employed following 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.
The Construction Stormwater General 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.
To view all pages for a particular BMP, click on "+"