Brown and Caldwell, Jeff Herr, P.E., D.WRE, Lisa Jeffrey, P.E., C.F.M
Brown and Caldwell, Jeff Herr, P.E., D.WRE, Lisa Jeffrey, P.E., C.F.M
Brown and Caldwell, Jeff Herr, P.E., D.WRE, Lisa Jeffrey, P.E., C.F.M
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Chesapeake Environmental Benefit<br />
BMP Efficiencies<br />
Urban BMP<br />
Total<br />
Nitrogen<br />
Load Reduction (%)<br />
Total<br />
Phosphorus TSS<br />
Wet Ponds, Constructed Wetl<strong>and</strong>s 20 45 60<br />
Dry Detention/Hydrodynamic 5 10 10<br />
Dry Extended Detention Pond 20 20 60<br />
Infiltration, A/B soils 80 85 95<br />
Filters (s<strong>and</strong>/organic/peat) 40 60 80<br />
Bioretention<br />
Permeable<br />
Pavement<br />
C&D w/ UD 25 45 55<br />
A&B w/ UD 70 75 80<br />
A&B w/o UD 80 85 90<br />
C&D w/ UD 10 20 55<br />
A&B w/ UD 45 50 70<br />
A&B w/o UD 75 80 85<br />
Grass Channels<br />
C&D w/o UD<br />
A&B w/o UD<br />
10<br />
45<br />
10<br />
45<br />
50<br />
70<br />
Bioswale 70 75 80
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