2012-06-26_PWETC_AgendaPacket - Laserfiche WebLink

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City government and includes areas such as waste reduction, water conservation, and carbon - emission reduction. Nature is a good example to follow as it works to reduce runoff volumes by infiltration, reduce soil loss through vegetation, enhance habitat, and reduce pollutants in storm runoff by infiltration and biological uptake. When land is developed, the natural system is changed. Oftentimes, both the peak runoff rate and the volume of runoff are increased. The increase in both developed runoff rate and volume can be harmful to downstream channels, resulting in degradation. This degradation has effects on habitat as well as water quality by increasing sediment loads. In addition to increasing runoff, new sediment loads and pollutants are introduced into the natural system through the development process. During construction, new sediment loads can be introduced by exposing previously vegetated soil. After development is completed, often there can be a whole new set of pollutants in storm runoff. The primary objectives of stonmwater sustainability are to mitigate these changes to the natural system. The City goals and policies for sustainable stonmwater management area listed in Table 13. Table 13 Goal 7 — Sustainability based on the foundation of efficient use of cM@unt*esouces. In this a 0090, 91 Polic No. Goal 7: Sustainabilit — Policies 1 The City will use the recently completed Stormwater Reuse Guide (Metropolitan Council, Fall 2011) as a guide in considering water reuse on City projects. 2 The City will strive to incorporate construction, building, and landscape designs that mimic natural systems, and infiltrate, retain, or detain rainfall onsite, can reduce excess flows into our sewers, streets, and waterways. 3 The City shall consider using trenchless technologies to reduce the impact on the ground surface and expose less disturbed area to erosion and runoff when appropriate. 4 The City shall consider trees trenches for stromwater treatment and more healthy urban trees in boulevards and parking lots. 5.0 Issues Assessment 5.1 Resolved Issues • Rosewood neighborhood rain gardens • Installation of a bioinfiltration basin along Aladdin Street that will capture runoff before it enters a wetland complex connected to Lake Owasso (GLWMO/RCD). • Arona pond Comprehensive Surface Water Management Plan ROSEV120222 City of Roseville Page 18