The work described in this paper provides an evaluation of an aged pervious concrete pavement in the Northeastern United States to provide a better understanding of the long-lasting effects of placement techniques as well as the long-term field performance of porous pavement, specifically in areas susceptible to freezing and thawing. Multiple samples were taken from the existing pavement and were examined in terms of porosity and unit weight, compressive and splitting tensile strength, and the depth and degree of clogging. It was concluded that improper placement and curing led to uneven pavement thickness, irregular pore distribution within the pervious concrete, and highly variable strength values across the site, as well as sealed surfaces that prevented infiltration.

Storm-water control measures (SCMs), also known as storm-water best management practices (BMPs), are increasingly being used to mitigate the impacts of development and restore the hydrologic cycle. This paper presents a three-tiered monitoring plan that can be used to determine the effectiveness of structural, nonproprietary SCMs in the Northeast United States. The monitoring plan offers three levels of monitoring: high, medium, and low. This 1-2-3 approach is common in environmental monitoring. The monitoring protocol integrates hydrologic, water quality, and ecological factors and recommendations for equipment with the level of monitoring. The monitoring plan is then applied to a rain garden on Villanova University's campus in Villanova, Pennsylvania, and a cost analysis of the different monitoring levels is provided.