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I <br /> Stormwater Management Report Everett, WA <br /> I <br /> Analysis and Design of Required Erosion and Sediment Control BMPs <br /> All erosion and sediment control measures shall be governed by the requirements of the <br /> Everett Stormwater Management Manual. A detailed temporary erosion and sedimentation <br /> ' control plan will be prepared to assist the contractor in complying with these requirements <br /> during building permit application. The proposed TESC plan is included in Appendix D of <br /> this report. It utilizes interceptor swales, silt fence, inlet protection and two sediment <br /> ponds. <br /> A. Construction Sequence and Procedure <br /> The proposed development includes an erosion/sedimentation control plan designed to <br /> prevent sediment-laden run-off from leaving the site during construction. The erosion <br /> potential of the site is influenced by four major factors: soil characteristics, vegetative <br /> cover, topography, and climate. Erosion/sedimentation control is achieved by a <br /> combination of structural measures, cover measures, and construction practices that are <br /> tailored to fit the specific site. <br /> Prior to the start of any grading activity upon the site, all erosion control measures, <br /> including installation of a stabilized construction entrance, shall be installed in accordance <br /> with this plan and the construction documents. <br /> The best construction practice will be employed to properly clear and grade the site and to <br /> schedule construction activities. The planned construction sequence for the construction <br /> of the site is as follows: <br /> 1 . Hold a pre-construction meeting with the City of Everett. <br /> 2. Establish limits of clearing and grading for on-site construction and off-site pond <br /> construction. <br /> 3. Install stabilized construction entrances. <br /> 4. Construct silt and orange construction fencing on-site. <br /> 5. Install inlet protection on existing catch basin structures. <br /> 6. Clear and grub the on-site and off-site pond areas. <br /> 7. Construct temporary sediment ponds and outlet conveyance systems. <br /> 8. Construct detention pond and inlet and outlet conveyance systems. <br /> 9. Start construction of building pad and structures. <br /> 10.Begin grading the site. <br /> 11.Install utilities, underdrains, storm drainage system, curbs and gutters. <br /> 12.Install inlet protection on all storm drainage structures. <br /> ' 13.Prepare site for paving. <br /> 14.Pave site. <br /> 15.Complete grading and install permanent seeding and planting. <br /> 16.Thoroughly clean existing and new storm system upon completion of paving. <br /> 17.Hydroseed disturbed ground areas. <br /> 18.Remove temporary erosion control measures upon stabilization of entire project <br /> site, as approved by governing jurisdiction engineer. <br /> PACLAND Job# 50108001 Page 10 <br />