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sewer system or waterbody. Measures to trap floatables for energy dissipation must also be <br />constructed. <br />(c) Minimize impervious surface area and maYirni_ze infiltration. <br />Where directed by the city and based on site feasibility, projects shall use existing natural <br />drainage ways and vegetated soil surfaces to convey, store, filter, and retain storm water <br />runoff before discharge into public waters or a storm sewer system (permanent pool areas of <br />wet ponds tend to lose infiltration capacity and will not be accepted as an infiltration <br />practice). The applicant shall attempt to limit the impervious surface of the developed site or <br />subdivision by incorporating the following design considerations, consistent with zoning, <br />subdivision, and PUD requirements: <br />1) Natural vegetation preserved wherever practical <br />2) Narrowing street widths <br />3) Reducing parking lot space <br />4) Sidewalk locations <br />5) Reducing setbacks and driveways <br />6) Maxi_mi~ing open space while incorporating smaller lot sizes to conserve natural <br />areas and reduce the amount of storm water runoff generated at the site <br />7) Using landscaping and soils to treat and infiltrate storm water runoff <br />8) Eliminate curb and gutter where practicable, and use vegetated swales or equivalent <br />9) Look for vegetated areas: that can filter sheet flow, removing sediment and other <br />...pollutants, and increasing the time of concentration <br />10) Disconnect impervious areas by allowing runoff from small impervious areas to be <br />directed to pervious areas where it can be infiltrated or filtered <br />11) All runoff from downspouts, driveways and other impervious areas shall be directed <br />to pervious surfaces, where feasible, or unless the applicant can demonstrate that the <br />practice is likely to result in groundwater contamination <br />12) Increase buffers around streams, steep slopes, and wetlands to protect from flood <br />damage and provide additional water quality treatment <br />13) Use shared parking facilities consistent with zoning requirements <br />14) Install semi-permeable/permeable or porous paving. <br />(d) Pond requirements. <br />14 <br />