Using Roadways to Control Stormwater with PICP

Course Description: In many urban watersheds regulators are adopting green infrastructure solutions for stormwater management. Retrofitting impervious pavement with materials designed to infiltrate stormwater is one obvious solution. The use of permeable interlocking concrete pavement (PICP) in parking lots and driveways has grown significantly in the last decade. Dozens of publications have demonstrated the runoff and pollutant control benefits these systems provide. However, parking lots and driveways cover relatively small areas within an urban watershed. Some municipalities now recognize that municipal roadways and alleyways can be designed to handle vehicular traffic while also functioning as a stormwater control measure using PICP. This presentation will describe how PICP systems are designed and constructed. Examples will illustrate the keys to properly constructing and maintaining these effective stormwater management systems. An update on the Southeast Atlanta Green Infrastructure Project will be provided highlighting how Atlanta converted four miles of impervious roadway to PICP to reduce flooding and combined sewer overflows. The presentation will conclude with lessons learned related to utilities, roadway slopes, and maintenance.

Delivery Method: Live

Internal Course Code: HS:OC116a

Duration: 1h

HSW Compatible: Yes

Point of Contact Name: Liz McGhie

Point of Contact Email: liz.mcghie@oldcastle.com