Guideline for Monitoring Stormwater Gross Solids

Prepared by the Gross Solid Technical Committee of the Urban Water Resources Research Council of the Environmental and Water Resources Institute of ASCE. This report standardizes data collection procedures and laboratory protocols used in evaluating the removal of gross solids. Gross solids are litter, trash, leaves, and large coarse sediments that travel, as either floating debris or bed loads, in stormwater conveyance systems. Traditional monitoring programs, which were designed to determine the effectiveness of best management practices (BMPs) for reducing stormwater pollution, rely on autosamplers that ineffectively sample gross solids. These large pollutants can have a harmful impact on the environment. This report analyzes three levels of monitoring procedures: screening evaluation, performance evaluation, and research and design. This book will be useful to engineers and professionals involved in stormwater management.