Date of Award

Winter 2006

Project Type


Program or Major

Civil Engineering

Degree Name

Master of Science

First Advisor

Thomas Ballestero


The objective of this study is to assess the stormwater management capability of porous asphalt (PA) as a parking lot in Durham, New Hampshire. The site was constructed in 2004 and consists of a 4-inch PA pavement course overlying a porous media reservoir, including a fine-grained filter course. Cost per PA parking space ($2,200) was comparable to that for dense mix asphalt ($2,000). Pavement durability has been adequate. The lot retained or infiltrated 25% of precipitation (18 months) and 0.03 lb/sf of chloride (1 year). There was high initial surface infiltration capacity (IC) at two locations (1,000--1,300 in/hr), and moderate IC at a third (330 in/hr). Two locations had a 50% decrease in IC. Frost penetration occurred to 1 foot. Storm event hydraulic performance was exceptional. Storm event water quality treatment for diesel, zinc, and TSS were excellent; for chloride and nitrate it was negative, and for phosphorus, limited.*.