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Best Management Practices (BMPs) or Green Infrastructure

green-stormwater-infrastructure.jpg

Best Management Practices (BMPs) or green infrastructure deals with the incorporation of stormwater management activities.

Implementation of BMPs has been through a partnership with the Clean Water Partnership Program (CWP).

Treating and Teaching (T&T) Program

“Consider the entire school grounds as a teaching opportunity, with a central space as the outdoor learning area or classroom.”

Training and motivating educators and facility managers to enable outdoor learning is at the core of the Treating and Teaching (T&T) Program.

Treating and Teaching has been implemented at 55 schools and has also included stormwater BMPs at a few offices, centers and community complexes.

Learn More About Storm Water BMP Types

BMPs are classified and conceptualized as scale-based and type-based. The scale-based category classifies them according to the size of the application area, such as lot-, community-, or watershed-scales. The type-base category classifies them into three types according to the geometric properties:

  • Point BMPs: Practices that capture upstream drainage at a specific location and may use a combination of detention, infiltration, evaporation, settling, and transformation to manage flow and remove pollutants.”
  • Linear BMPs: Narrow linear shapes adjacent to stream channels that provide filtration of runoff, nutrient uptake, and ancillary benefits of stream shading, wildlife habitat, and aesthetic value.
  • Area BMPs: Land-based management practices that affect impervious area, land cover, and pollutant input.”1

 

Point BMPs Implemented in T & T Program

What are Point BMPs?

Point BMPs “capture upstream drainage at a specific location and may use a combination of detention, infiltration, evaporation, settling, and transformation to manage flow and remove pollutants.”1

  • Bioretention - 50
  • Micro-Bioretention - 81
  • Rainwater Harvesting - 1
  • Oil Grit Separator - 3
  • Submerged Gravel Wetlands - 11
  • Infiltration Basin - 1
  • Detention Structure Dry Pond - 1
  • Extended Detention Structure - 2
  • Sand Filter - 3
  • Retention Pond (Wet Pond) - 1

  

Linear BMPs Implemented in T & T Program

What are Linear BMPs?

Linear BMPs “provide filtration of runoff, nutrient uptake, and ancillary benefits of stream shading, wildlife habitat, and aesthetic value.”1

  • Grassed Swales - 3
  • Infiltration Trenches - 11
  • Bio-Swales - 4

bio-swales.jpg   grassed-swales.jpg

Linear BMPs Types and Quantities in PGCPS

Area BMPs Implemented in T & T Program

What are Area BMPs?permeable-pavement.jpggreen-roof.jpg

Area BMPs are “Land-based management practices that affect impervious area, land cover, and pollutant input.”1

  • Permeable Pavements - 11
  • Green Roof - Intensive - 2
  • Green Roof - Extensive - 1
  • Flood Management Area - 3
  • Rain Gardens - 3
  • Landscape infiltration - 1

  

BMP Implementation in Our Schools

BMPs in Elementary Schools

BMPs in Middle Schools

BMPs in High Schools

1 Environmental Protection Agency, Best Management Practices (BMPs) Siting Tool | US EPA as published on April 14, 2023.