Bioretention: Full infiltration

Fully infiltrating bioretention with an inspection well, but no underdrain

Overview

This type of bioretention facility provides the highest level of stormwater volume control. Although this design does not include an underdrain, an overflow pipe, a weir or other outlet structure must be included.

Materials

• Reservoir gravel
• Pea gravel
• Geotextiles
• Pipes
• Biomedia
• Erosion control
• Mulch
• Planting considerations and Recommended species

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A shallow excavated surface depression containing prepared filter media, mulch, and planted with selected vegetation.

A perforated pipe used to assist the draining of soils.