812 35TH ST 2022-03-07 - Laserfiche WebLink

• Rucker Hill Short Plat Minimum Requirement # 2: SWPPP Narrative Element#1: Mark Clearing Limits Clearing limits have been shown on the SWPPP Plan. Element#2: Establish Construction Entrance • A temporary construction entrance has been shown near the northwest property corner on the SWPPP plan. All vehicles shall be free of debris prior to leaving the site. Element#3: Control Flow Rates Flow rates during construction are to be contained through the installation of temporary interceptor trenches along with a temporary sediment trap on the northern end of the site. • Element#4: Install Sediment Controls Sediment controls mainly consist of the installation of a temporary sediment trap within the north end of the site along with silt fencing along the downslope edges of the site. I 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 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. If winter grading is conducted, all exposed soils shall be covered within 2 days. Element# 6: Protect Slopes Steep slopes will be outside the clearing limits when not being graded. When graded, slopes will be protected with appropriate slope protection BMPs, such as mulching or nets • and blankets, depending on site conditions during construction. Element#7: Protect Drain Inlets Catch basin inlets downstream of the site along 35th Street will be protected with catch • basin sediment inserts or equivalent. Element# 8: Stabilize Channels and Outlets Channels and drainage outlets are not needed around the proposed development area on site. No stabilization is necessary. Existing channels or drainage outlets located within 500- i feet of the property of the property should be routinely inspected for debris that may dam and/or aid erosion. • WESTERN ENGINEERS,INC. 10 PROJECT:16-1584-A