tailieunhanh - City of St. Catharines STORMWATER MANAGEMENT AND NON-POINT SOURCE RUNOFF Mayor Tim Rigby

The technology-based Effluent Guidelines could not guarantee achievement of adequate water quality in all receiving waters, so permit writers were required to set even more stringent “water-quality-limited” standards for plants discharging into such water bodies. These standards necessarily depended on the current conditions of the receiving water body and its capacity to absorb waste. Also, the effluent limitations for any firm affected and were affected by the effluent limitations on all other firms. The front-line administration of this program—., the writing of the NPDES permits and the routine monitoring and enforcement of permit requirements—could be delegated, to. | City of St. Catharines STORMWATER MANAGEMENT AND NON-POINT SOURCE RUNOFF Mayor Tim Rigby PERSPECTIVE We want to use our waterways -1999 World Rowing Championships ế ế à ế ế Settled in 1800 Canal system in 1829 Waterworks in 1975 Sewers to waterways in 1912 Wastewater treatment in 1951 CSO and stormwater problems World Class Henley Rowing Course in Martindale Pond Tributary to Lake Ontario ể ể ể ể ể ể lifeguard Cladophora gíomerata ENVIRONMENTAL IMPACTS as identified by RAP Loss of fish habitat Based on City of Toronto slide Sediment quality and benthic invertebrates Nutrient enrichment nuisance algal growth Impacts on fisheries and aquatic biota Contamination of recreational beach areas Contribution to fish consumption .