Ordinance No. 20319 - Laserfiche WebLink

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FF, MA models are typically based only on the extent of development at the time the modeling was conducted and do not take into account the ultimate buildout of the drainage area. This poses risks to other properties in or adjacent to floodplains and can change the hydro~raph of the river. Policies G. 13 Improve surface and ground water quality and quantity in the metropolitan area by developing regulations or instituting programs for stormwater to: a. Increase public awareness of techniques and practices private individuals can employ to help correct water quality and quantity problems; b. Improve management of industrial and commercial operations to reduce negative water quality and quantity impacts; c. Regulate site planning for new development and construction to better manage pre- and post-construction storm runoff, including erosion, velocity, pollutant loading, and drainage; d. Increase storage and retention and natural filtration of storm runoff to lower and delay peak storm flows and to settle out pollutants prior to discharge into regulated waterways; e. Require on-site controls and development standards, as practical, to reduce off- site impacts from stormwater rtmoff; f. Use natural and simple mechanical treatment systems to provide treatment for potentially contaminated runoff waters; g. Reduce street-related water quality and quantity problems; h. Regulate use and require containment and/or pretreatment of toxic substances; i. Include containment measures in site review standards to minimize the effects of chemical and petroleum spills; and j. Consider impacts to ground water quality in the design and location of dry wells. G. 14 Implement changes to stormwater facilities and management practices to reduce the presence of pollutants regulated under the Clean Water Act and to address the requirements of the ESA. G. 15 Consider wellhead protection areas and surface water supplies when planning stormwater facilities. III-G-8