Erosion and Sediment Control Plan
Erosion and Sediment Control Plan
6/18/2020 12:29:20 PM
6/18/2020 12:29:18 PM
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City of Winona Erosion and Sediment Control Plan Checklist <br /> City of Winona - Engineering Department <br /> Goal: To control erosion and prevent sediment and other pollutants from entering the <br /> Mississippi River/ streams/wetlands / storm drain system during construction. <br /> Erosion & Sediment Control Principles and Measures <br /> (Check all that apply to your project) <br /> F-1 1. Maintain existing vegetation whenever possible and minimize the area of disturbance. <br /> Retain and protect trees to enhance future landscaping efforts and to reduce raindrop <br /> impact. (Vegetation is the best and most cost-effective erosion control practice). <br /> F-1 2. To avoid soil compaction and damage to vegetation, flag areas that need to be off- <br /> limits to construction equipment BEFORE construction begins. These areas include <br /> sewage treatment areas, infiltration basins, natural watercourses, valuable trees, and <br /> wetlands. <br /> F-1 3. Install all sediment control practices BEFORE any soil disturbing activities occur <br /> (including clearing and grubbing). These may include silt fencing, rock check dams, and <br /> storm drain inlet protection. Silt fence can treat a maximum of 100 square feet per lineal <br /> foot of fence. Install silt fence in shorter reaches on the contour with each end curved <br /> uphill to more effectively filter water. Sensitive areas such as wetlands, drainage swales <br /> and shoreland areas should also be protected with silt fence, biologs/rolls or rock socks. <br /> F-1 4. Divert run-on around the site, if practical (avoids treating clean water). <br /> F-1 5. Phase construction activities to minimize the areas disturbed at one time. This will <br /> also allow completed areas to be stabilized and re-vegetated before disturbing adjacent <br /> sites. The need for temporary erosion control measures may be avoided by completing a <br /> phase and installing permanent erosion control measures when the final grade is <br /> attained. <br /> F-1 6. Maintain and protect all natural waterways. Retain at least a 100-foot wide strip of <br /> natural vegetation along special waters (trout streams). No disturbance on bluffs, steep <br /> slopes and within structure setbacks zones are allowed to sediment and other pollutants <br /> to filter before entering surface waters. <br /> F-1 7. Minimize the use of impervious (hard) surfaces such as roofs, driveways and parking <br /> areas so rain can infiltrate naturally into the ground. Direct runoff to vegetated areas. <br /> F-1 8. Use rock rip-rap at both the inlet and outlet ends of culverts to prevent scour erosion <br /> and use energy dissipaters at the outlet ends (e.g. plunge pools). <br /> F-1 9. In areas of concentrated flow install rock check dams, triangular dikes, bio-roll <br /> blankets or rock socks to slow runoff and trap sediment. <br /> F-1 10. Use temporary slope drains or rock chutes to move water down steep slopes. <br /> F-1 11. Construct sediment basins (>1 0 acre watershed or >5 acres near trout streams) <br /> and/or infiltration basins to treat stormwater runoff. <br /> F-1 12. Cover any stockpiled topsoil with plastic (or other impervious covering) or use a <br /> temporary seed mix. Use stockpiled topsoil as earthen berms to serve as temporary <br /> sediment basins. <br /> F-1 13. Install water bars on access roads to prevent concentrated water runoff from flowing <br /> down the road, eroding gravel, and filling in the ditches. <br /> Page 1 of 2 <br />
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