This document discusses porous asphalt pavement. It begins with an introduction to porous asphalt and its uses for stormwater management. It then covers the design criteria and construction process for porous asphalt pavement, which involves laying down layers of aggregate and asphalt with high void ratios. The document also discusses the comparable costs but higher material costs of porous asphalt. It lists advantages like flood control and groundwater recharge and disadvantages like requiring routine sweeping. In conclusion, it states that porous asphalt is an effective stormwater management technique that can improve water quality and quality pavement cooling.