1502 SE EVERETT MALL WAY FLOOR AND DECOR 2019-06-24

Everett Floor&Decor j Storm Drainage Report Everett,Washington , • I Section 7- CS WPPP Analysis and Designt :,. .,....."60,61,, All erosion and sediment control measures shall be governed by the requirements Department 1 of Ecology's SWMMWW and the General Permit for Construction Storm Water(CSWGP). Since the project will cause less than an acre of soil disturbance, a National Pollutant Discharge Elimination System (NPDES) Permit will not need to be obtained to gain coverage under the 1 Construction Stormwater General Permit. I A temporary erosion and sedimentation control plan has been prepared to assist the contractor in complying with these requirements. The Erosion and Sediment Control (ESC) along with the construction plans. plan is included I1. Construction Sequence and Procedure The proposed development will include an erosion/sedimentation control plan designed to prevent sediment-laden run-off from leaving the site during construction. The erosion potential of the site is influenced by four major factors: soil characteristics, vegetative cover, topography, and climate. Erosion/sedimentation control is achieved by a combination of structural measures, cover measures, and construction practices that are tailored to fit the specific site. i The contractor will be responsible for implementing the following erosion control and storm water management control measures. The contractor may designate these tasks to certain subcontractors as they see fit, but the ultimate responsibility for implementing these controls and ensuring their proper functioning remains with the contractor. The order of activities will be as follows. Phase 1 L Prior to any construction work on the site, representatives from the City of Everett must approve the storm water pollution prevention plan. 2. Install inlet protection to all existing catch basins. 3. Demolish existing pavement and curbs. 4. Install curbs and gutters. 5. Prepare site for paving. Finalize pavement subgrade preparation. 6. Remove inlet protection around inlets and manholes no more than 48 hours prior to placing stabilized base course. 7. Install base material as required for pavement. Pave site. Do not pave over catch basins. 8. Complete final grading in non-parking areas and install permanent seeding and planting. The degree of erosion risk on the proposed project site is minimal. The major'ty of the site is pav d, and slope across the site is minimal. Selpi g c >n r 146 peoStd1; e > , MAIL ,BmPs elf 4g ut( * prum,4 s;li=lac ru.416 4e. rMw c" PACLAND Project#10-635-004 /67/