− | :A stormwater filtration and infiltration practice. The practice is a shallow excavated surface depression containing a prepared soil mix, mulch, and planted with specially selected vegetation. The system is engineered to temporarily store runoff in the depression and gradually filters it through the mulch, filter media, and root zone. They remove pollutants from runoff through filtration in the soil and uptake by plant roots and can help to reduce runoff volume through evapotranspiration and infiltration. | + | :A stormwater filtration and/or infiltration practice. The practice is a shallow excavated surface depression containing a prepared soil mix, mulch, and planted with specially selected vegetation. The system is engineered to temporarily store runoff in the depression and gradually filter it through the mulch, filter media, and root zone. Pollutants are removed from runoff through filtration in the soil and uptake by plant roots and runoff volumes are reduced through evapotranspiration and infiltration. |