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Latest revision as of 19:49, 1 August 2022

Median pollutant removal of total suspended solids by stormwater treatment practices. Values represent percentage of incoming pollutant load that is removed. Source: Minnesota Stormwater Manual. Manual data was based on information from ASCE/EPA International Database; Winer (2000)
BMP group Total suspended solids
Bioretentiona 85c
Filtrationb 85
Infiltrationd 100
Stormwater ponds 80
Stormwater wetlands 75

aData based on fewer than five monitoring studies
bExcludes vertical sand filters and filter strips
cFiltration values used
dNote that 100% is assumed for all infiltration, but only for that portion of the flow fully treated in the infiltration facility; by-passed runoff does not receive any treatment.

This page was last edited on 1 August 2022, at 19:49.