6009 FLEMING ST 2021-06-09 - Laserfiche WebLink

POPACH SHORT PLAT CONSTRUCTION STORM WATER POLLUTION PREVENTION ELEMENTS Element#1: Mark Clearing Limits Clearing limits are clearly delineated on the TESC plan and shall be delineated by the owner/developer upon the start of construction. Element#2: Establish Construction Entrance A temporary construction entrance is designed at the location of the proposed driveway that accesses Fleming Street. The temporary construction entrance shall be fully used and maintained until final soil stabilization has been conducted on-site. Element#3: Control Flow Rates Flow rates during construction are planned to be controlled with the installation of silt fencing along the northern, eastern, and southern boundaries of the site. Element#4: Install Sediment Controls Sediment controls will remain in-place before, during and after initial site construction (prior to paving/gravel install of the new driveway and excavation of the new building foundations). Silt fences have been shown on the grading and erosion control plan which are to be installed, where necessary, along the northern, eastern, and southern • sides of the construction area. Element# 5: Stabilize Soils All soils disturbed during site grading will be stabilized by use of the most appropriate BMP method available. These consist of short-term and long-term solutions. Short- term methods consist of compaction of the soils by vibratory roller or bulldozer. Long-term methods consist of hydro-seed and straw covering over the soils (this is in the case of the project becoming dormant for greater than 1 month). At this time no wintertime grading or construction activities will occur. During construction periods longer than 1 working week(7 days) where the soils are exposed and un-worked will use the proscribed methods in the Storm Water Management Manual for Western Washington to reduce sedimentation transported offsite. Element# 6: Protect Slopes All slopes on-site exceeding 33% fall less than 10 feet; therefore, such slopes are not classified as steep slopes. Unnecessary access to slope areas is to be restricted through construction limits and silt fencing. Element# 7: Protect Drain Inlets Catch basin inserts and/or triangular silt dams will be installed at catch basins and culvert inlets within 500 downstream of the site. Element# 8: Stabilize Channels and Outlets All existing channels in the general vicinity of the property appear to be stable and maintained enough to contain any possible additional runoff the proposed development may produce. Any sedimentation of downstream open ditch lines shall be removed prior to completion of construction. JOB NO:15-1463-A 2