600 RIVERSIDE RD 2022-01-25 - Laserfiche WebLink

' 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. if 5. Encourage the use of alternate, paved routes, 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 I! — Construction Stormwater Pollution Prevention 3-29