Pollutant removal percentages for filtration BMPs
| Practice | TSS Low-Med-High | TP Low-Med-High | TN4 | Metals3 (average of Zn and Cu) | Bacteria3 | Hydrocarbons3 |
|---|---|---|---|---|---|---|
| Media Filter1 | 75-85-90 | 30-50-55 | 35 | 80 | 50 | 80 |
| Vegetative Filter2 | see here | see here | 35 | 80 | 0 | 80 |
| 1 For example, sand, mixed sand/peat and other geologic media 2 Grass filter/swale 3 Not enough information given in databases to differentiate type of filter so both combined for this entry |
||||||