Step 6. Pollutant Removal
This matrix examines the capability of each STP option to remove specific pollutants from stormwater runoff. The matrix includes data for:
For more information on these and other pollutants, please consult the Pollutant Removal Database (in .pdf format)
In some communities, on-site load calculation is required, and this matrix is critical. In others, these values may be replaced with relative (i.e., "high, low, moderate") pollutant removals. Also, a community may choose to focus on only one or two target pollutants to protect a specific resource.
STP Selection Matrix 6. Pollutant Removal
|Open Channels 4||81||342||842,5||61||-252|
Average of zinc and copper. Zinc only for infiltration practices.
2: Based on fewer than five data points.
3: Excludes vertical sand filters and filter strips.
4: Highest removal rates for dry swales
5: No data available for grass channels
N/A: Data not available