Investigation of Dry-Weather Pollutant Entries into Storm-Drainage Systems

摘要

The article describes the results of a series of research tasks to develop aprocedure to investigate non-stormwater (dry-weather) entries into storm drainage systems. Dry-weather flows discharging from storm drainage systems can contribute significant pollutant loadings to receiving waters and although they can originate from many sources, the most significant include sanitary wastewater, industrial and commercial pollutant entries, failing septic tank systems, and vehicle maintenace activties. Protocols are discussed to: characterize the drainage area; locate and identify polluted outfalls; estimate the magnitudes of non-stormwater entries; and locate and correct the non-stormwater entries into the storm drainage system.