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CITY OF EVERETf STORMWATER MANAGEMENT MANUAL <br /> ?. UEgrade the road surface strcngfh by improving particle size,shape,and mineral rypes that make �I <br /> up thc surface and base malerials. <br /> 3. Add surface gravel to rcduce the source of dust emissian. Limit Ihe amount of fine particles ' <br /> (thosc smaller lhan.075 mm)to 10 to 20 percent. i <br /> 4. Use¢eotextile fabrics�o inerease the strength of new roads or roads undergoing rcconswction. � <br /> 5. Eocouragc the use of altemate,paved routes, if available. <br /> 6. Resvict use by tracked vehicles and heavy trucks ro prevent damage m road surface and base. <br /> 7. Apply chemical dust suppressants usir.g the admix method,blending thc praduct with the rop fcw <br /> inches of surfacc material. Suppressants may also be applicd as surface treatrnents. <br /> 8. Pave unpaved pertnanent roads and other trafficked areas. <br /> 9. Use vacuum sheet swcepers. <br /> 10. Remove mud and ather dirt promptly so it does not dry and then tum into dust. <br /> I 1. Limit dust-causing work on windy days. <br /> Contact the Puget Sound Air Pollution Control Agency(PSAPCA) for guidance and haining on other <br /> dust control measures. Complianee with PSACP constitutes compliance with this BMP. <br /> Mainfenance Sfandards <br /> Re-spray area as necessary to keep dust to a minimum. <br /> 3.2.17 BMP C150: Materials on Hand <br /> Purpose <br /> Quantities of erosioo prevention and sediment control materials shall be kept on the project site at all <br /> times tn be used for emergency situations suc6 as unexpected heary summer rains. Having these <br /> materials on site reduces the time needed to implement BMPs when inspections indicate that existing <br /> BMPs are not meeting the C-SWPPP requirements. <br /> Condit(ons o/Use <br /> I. Materials shall be stockpiled and readily availablc beFare any site clearing,grubbing,or <br /> carthwork begins. ' <br /> 2. If stotagc space at the prcject site is at a premium,the contractor shall maintain t6e materials at <br /> thcir officc or yard. The office or yazd must be;ass than an hour from the project site. <br /> Design and Installation Speclrcations <br /> Depcnding on the pro�ect type,sizc,complexity,and Icngth,materials and quantitiee will vary. A good <br /> minimum that will cov^r numerous situations includes thc materials in thc tablc at ine end of Ihis scclion. <br /> Malntenance SfanCards <br /> I. All materials with the exception of thc quarry spalls,steel T-posts,and gravcl should be kept <br /> covered and out of both sun and rain. <br /> 2. Materials shall be restocked as needed. <br /> Volume II—Consfruction Stomtwater Pollution Prevention <br /> 3-29 <br />