Stormwater filtration BMPs - treatment properties
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Stormwater BMP Illustration Pollutant Removal Mechanism Location in Treatment Train Pollutant Removal 1,2 Potential Application 1
Dry swale or step pool image dry swale Sedimentation / Infiltration Throughout TSS: Medium

TN: Low TP: Medium Chloride: Low Metals: Medium Oils and Grease: Low

Pathogens: Low
Residential

Commercial
Industrial
Ultra Urban
Highway/Road

Recreational
Wet swale Screen shot of the Watershed tab for Wet swale Sedimentation / Infiltration End TSS: High

TN: Medium/High TP: Medium/High Chloride: Low Metals: High Oils and Grease: High

Pathogens: High
Residential: Yes

Commercial: Yes Ultra Urban: Limited Industrial: Limited Retrofit: Yes

Highway/Road: Limited
Biofiltration Basin
Bioinfiltration icon.png
Sedimentation / Infiltration Beginning TSS: High

TN: Low/Medium TP: Medium/High Chloride: Low Metals: High

Oils and Grease: High
Residential: Yes

Commercial: Yes Ultra Urban: Limited Industrial: Limited Retrofit: Yes

Highway/Road: Limited
Permeable pavement with underdrain
Permeable pavement icon.png
Infiltration Beginning TSS: High

TN: Medium/High TP: Medium/High Chloride: Low Metals: High

Oils and Grease: High
Residential: Yes

Commercial: Yes Ultra Urban: Yes Industrial: Limited Retrofit: Yes

Highway/Road: Limited
Tree Trench/Tree Box (with underdrain)
Tree trench icon.png
Infiltration, Transpiration Throughout TSS: High

TN: Medium/High TP: Medium/High Chloride: Low Metals: High Oils and Grease: High

Pathogens: High
Residential: Limited

Commercial: Yes Ultra Urban: Yes Industrial: Limited Retrofit: Yes

Highway/Road: Limited
Green roof TSS: High

TN: Medium/High TP: Medium/High Chloride: Low Metals: High Oils and Grease: High

Pathogens: High
Residential: Yes

Commercial: Yes Ultra Urban: Yes Industrial: Yes Retrofit: Yes

Highway/Road: No

1 Treatment Capabilities and Potential Applications referenced from Manual Section BMP's for stormwater infiltration
2 Low = < 30%; Medium = 30‐65%; High = 65‐100%