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CSMP General Notes Cont.... <br />10. During the Wet Weather season (October 15 to April 30), all exposed soil and stockpile areas <br />shall be covered, or otherwise protected by a facility (or combination of facilities) that result in no <br />stormwater runoff leaving the site during a 5 -year storm event. For development sites over 40 <br />acres, the design storm shall be a 10 -year storm event consistent with an approved CSMP. <br />11. All adjacent properties, water features, and related natural resources are to be kept free of <br />deposits or discharges of soil, sediment or construction -related material from the construction site. <br />12. All erosion and sediment control measures shall be protected from damage at all times. Erosion <br />control measures shall remain in place until vegetation has been established and the site is <br />permanently stabilized. Any measures that are damaged or destroyed shall be repaired or replaced <br />immediately. <br />13. Stabilize all disturbed areas within 50 feet of waterways, wetlands or other sensitive areas within <br />7 days of exposure. <br />14. Streets adjacent to construction entrances and along haul routes shall be swept as needed or when <br />directed by the City inspector to ensure public rights-of-way are kept clean and free of debris. <br />15. When trucking saturated soils to or from the site, either water -tight trucks shall be used or loads <br />shall be drained prior to transport until dripping has been reduced to no more than one gallon per <br />hour. Sediment laden water will not be allowed to enter the stonnwater system. <br />16. Extracted ground water from excavated trenches shall be disposed of in a suitable manner without <br />discharging sediment to adjacent properties, the City's stormwater system, water features, or <br />related natural resources. Dewatering systems shall be designed and operated so as to prevent <br />removal of the natural soils and so that the groundwater level outside the excavation is not <br />reduced to the extent that would damage or endanger adjacent structures or property. Approval of <br />the dewatering system does not guarantee that it will meet the outcomes or be acceptable for use <br />in all situations. Modifications to the system will be required if the outcomes cannot be met. At <br />no time will sediment laden water be allowed to leave the construction site. <br />17. A supply of materials necessary to meet the outcomes and implement the CSMP or other erosion <br />practices under all weather conditions shall be maintained at all times on the construction site. <br />18. No hazardous substances, such as paints, thinners, fuels and other chemicals shall be released onto <br />the site, adjacent properties, or into water features, the City's stormwater system, or related <br />natural resources. <br />19. No discharge into the City's stormwater system or related natural resources of construction related <br />contaminants resulting from activities such as, but not limited to, concrete sawing, cleaning or <br />washing of equipment, tools, or vehicles, shall occur. <br />20. All work performed by utility companies for this project, including placement of appropriate <br />erosion and sediment control measures, finished grading, seeding, mulching and cleanup is <br />governed by the conditions and requirements of this CSMP. Compliance with these requirements <br />is the responsibility of the permit holder. <br />City of Eugene, Public Works Engineering, Erosion Prevention <br />99 W. 101h Ave, .Eugene, OR 97401 <br />E-mail: pwerosion@ci.eugene.or.us <br />www.eugene-or.gov/erosion <br />