3313 OAKES AVE 2020-07-14 - Laserfiche WebLink

STORMWATER SITE PLAN May 10,2017 OAKES AVENUE APARTMENTS PAGE 15 MR 3: WATER POLLUTION SOURCE CONTROL CONSTRUCTION STORMWATER BMPs A Storm Water Pollution Prevention Plan, SWPPP, is part of the construction drawings prepared for the project, and includes the following erosion control Best Management Practices: The construction staging area shall occur on-site. High Visibility Fencing (BMP C103) Use in combination with BMP C233, silt fence as indicated on the plans. Construction Road/Parking Area Stabilization (BMP C107) Once demolition is complete, the building foundations and slab areas will be stabilized with gravel and concrete along with the proposed parking along the alley. Temporary& Permanent Seeding (BMP C120) Permanent seeding shall be used to stabilize exposed soils and shall be performed under the direction of the landscape plans and specifications. Mulching (BMP C121) Stabilize exposed surfaces with 4" sterile straw mulch when surfaces are to be unworked for the seasonal time frames listed in the TESC Notes and SWPPP Narrative. Plastic Covering (BMP C123) Use plastic sheathing to protect stockpiles. Stabilize with sand bags connected with rope. Topsoiling/Composting (BMP C125) Topsoil proposed planters as noted. Dust Control (BMP C140) Contractor shall implement measures to prevent wind transport of dust from soil surfaces. Such measures can include but are not limited to the following: mulching areas not used for vehicle access, reducing speeds on haul roads, sprinkle exposed surfaces with water, surface haul roads with gravel. Storm Inlet Protection (BMP C220) Place inserts per plan detail in existing catch basins as indicated on the plan. As new catch basins are installed, these shall also be protected until the drainage area is stabilized. Silt Fence (BMP C233) P:1Work(Share ii le)\Projects\20 k 6\16-203 Rainier Building Co\CE DOCS\Drain\2017 05 10 16-205 Oakes 1)raiu Rpt.doe