a b s t r a c tHigh levels of turbidity and fine suspended sediments are often found in stormwater discharges fromconstruction sites even when best management practices (BMPs) for sediment control are in place. Thisstudy evaluated turbidity reduction by three check dam types: 1) rock check dam representing a standardBMP, 2) excelsior wattle representing a fiber check dam (FCD), and 3) rock check dam wrapped withexcelsior erosion control blanket (rock þ excelsior ECB) representing an alternative FCD. Three checkdams (all same type) were installed in a lined, 24-m ditch on a 5e7% slope ...

Studies of outdoor thermal comfort in northern China a b s t r a c tOutdoor spaces play important roles in daily lives, and the use of these spaces is determined largely by outdoor thermal comfort. Few studies have been conducted on outdoor thermal comfort in northern China. Using microclimatic monitoring and subject interviews at a park in Tianjin, China, this investigationstudied outdoor thermal comfort under different climate conditions. Although outdoor thermal environment varied greatly with air temperature from
5.0 to 34.5 C, 83.3% of respondents consider ...