859 LOCUST ST 2022-07-20 - Laserfiche WebLink

1 ) 0 6.0 Stormwater Pollution Prevention Plan (SWPPP) In order to protect the downstream conditions from sediments, several erosion control Best Management Practices(BMPs) from the DOE manual will be utilized. A temporary gravel construction entrance shall be used between the road and development area, as necessary to knock mud off of tires on vehicles exiting the site. Additionally, limiting earthwork and utility construction activities to dry weather conditions,minimizing area and duration of soil exposure, storm drain inlet protection,and stockpiling and sheathing of strippings,will further reduce the potential for silt-laden runoff. Interim measures to be employed during construction will include the installation of silt fences along the low side of areas to be cleared and graded. Stockpiles will be covered with polyethylene sheathing. 1. Factors expected to create an erosion risk when developed: • Exposure of soils during grading 2. Location relative to critical areas: • No critical areas on-site 3. Soil type: • Alderwood-Urban complex 4. Potential for slides or other ground movement: • None anticipated 5. Sources of water for erosion: • Rainfall 6. Measures proposed to minimize and prevent erosion to the greatest extent possible for the development: • Preparation and implementation of an erosion and sedimentation plan which is sensitive to the soils, slopes, and construction season • Silt fencing • Catch basin protection • Gravel construction entrance A SWPPP will be prepared as a separate document for use during construction. The following section provides a detailed description of the BMPs to be implemented based on the 13 required elements of the SWPPP. For additional information reference the project TESC plans and SWPPP. DAVID EVANS AND ASSOCIATES,INC. GRANDVIEW APARTMENTS CLUBHOUSE MARCH,2017 STORMWATER SITE PLAN PAGE 11