**Abstract Text**
Permeable pavements is one of the most utilized Low Impact Development stormwater control measures. Stormwater guidelines offer multiple types of permeable pavements, such as permeable concrete, permeable asphalt, permeable interlocking concrete pavement, and plastic grid pavers. Which type of pavement provides the best hydrologic and water quality treatment performance is still not clear due to the fact that most studies compare different permeable pavements in either lab scale, or in different locations. This project implemented a permeable pavement testbed composed of four parking lots with four different designs of permeable pavement, including permeable asphalt, plastic grid pavers, permeable interlocking concrete pavers, and permeable concrete. All parking cells have the same dimensions, are lined with an underdrain where the outflow is measured. The pavement temperature, storage water level, and rainfall are measured. Flow paced water samples are collected for analysis of total and volatile suspended solids, metals, pH, conductivity, polycyclic aromatic hydrocarbons, bacteria, and temperature. Moreover, the surface infiltration rate was monitored to evaluate the clogging. A system to monitor traffic was implemented utilizing security cameras. The permeable parking lots are compared with a control parking lot paved with conventional asphalt.



Hydrologic and Water Quality Treatment Performance of Four Permeable Pavements Surfaces (Room 301 C, Monday 7th, 3:30pm-5:00pm)

The International Low Impact Development Conference highlights interdisciplinary practice, research, and implementation of Low Impact Development (LID), Green Infrastructure (GI), Sustainable Urban Drainage Systems (SUDS) and Water Sensitive Urban Designs (WSUD). The focus will be on using our past and present understanding of LID to tune management programs, design practice, and operation and maintenance into the future.