3214 BROADWAY BROADWAY KINECT APARTMENTS 2021-08-11

• • CITY OF EVERETT STORMWATER MANAGEMENT MANUAL • • 2. Upgrade the road surface strength by improving particle size, shape, and mineral types that make • up the surface and base materials. 3. Add surface gravel to reduce the source of dust emission. Limit the amount of fine particles • (those smaller than .075 mm)to 10 to 20 percent. • 4. Use geotextile fabrics to increase the strength of new roads or roads undergoing reconstruction. • 5. Encourage the use of alternate,paved routes, if available. • 6. Restrict use by tracked vehicles and heavy trucks to prevent damage to road surface and base. • 7. Apply chemical dust suppressants using the admix method, blending the product with the top few • inches of surface material. Suppressants may also be applied as surface treatments. • 8. Pave unpaved permanent roads and other trafficked areas. '• 9. Use vacuum street sweepers. • 10. Remove mud and other dirt promptly so it does not dry and then turn into dust. • 11. Limit dust-causing work on windy days. • Contact the Puget Sound Air Pollution Control Agency(PSAPCA) for guidance and training on other • dust control measures. Compliance with PSACP constitutes compliance with this BMP. • Maintenance Standards • Re-spray area as necessary to keep dust to a minimum. • 3.2.17 BMP C150: Materials on Hand • • Purpose • Quantities of erosion prevention and sediment control materials shall be kept on the project site at all • times to be used for emergency situations such as unexpected heavy summer rains. Having these materials on site reduces the time needed to implement BMPs when inspections indicate that existing • BMPs are not meeting the C-SWPPP requirements. • Conditions of Use • 1. Materials shall be stockpiled and readily available before any site clearing, grubbing,or • earthwork begins. • 2. If storage space at the project site is at a premium,the contractor shall maintain the materials at • their office or yard. The office or yard must be less than an hour from the project site. Design and Installation Specifications • • Depending on the project type, size, complexity,and length, materials and quantities will vary. A good minimum that will cover numerous situations includes the materials in the table at the end of this section. • Maintenance Standards • 1. All materials with the exception of the quarry spalls, steel T-posts, and gravel should be kept • covered and out of both sun and rain. 2. Materials shall be restocked as needed. • • • • • Volume II—Construction Stormwater Pollution Prevention • 3-29 • •