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Commercial cleaning contract <br /> Dye SDSs <br /> Names and contact information of the event officials for both during and . er the event. <br /> Preventin• - , noff from Enterin• Draina•e S stems and Water Bodies <br /> • Protect sto drains by using berms, covering the drains, and using cat basin covers. <br /> • Use care when emoving berms, covers, and tarps to ensure no dye •nters the storm drains. <br /> • Prohibit participan' from throwing dye within 100 feet of any str-:m or other surface water- <br /> body. <br /> • Prohibit participants fro throwing dye within 100 feet of a open stormwater feature(e.g,. <br /> ditch, swale, bioretention, :in garden, detention pond) <br /> . Set up color stations at least 1 b I feet away from any rface water or open stormwater fea- <br /> ture. <br /> . The route, start,finish, and color alp. 'cation sta 'ons must be at least 100'away from any per- <br /> meable pavement or the permeable p. eme must be completely covered. <br /> . If the event will be held on a small, contai .• area, cordon off the area and place enough cov- <br /> ers on the ground to cover the entire sit:. If passible, contain the color application to grassy <br /> areas where ground covers are unne'essary. <br /> Event Clean-Up <br /> • Dry off tarps and stained wet •:vement with towels or:bsorbent pads. <br /> • Use brooms or street swe:sers to clean up paved areas. ' he fineness of the material may <br /> require sweepers with d .st control systems. <br /> • Do not use blowers t6 move dye material. <br /> • Do not use hose •r pressure washers to rinse excess dye off of to •s, sidewalks or paved <br /> areas. If it beco es necessary to use water to clean surfaces, all the ater must be collected <br /> and dispose. of to the sanitary sewer system, with approval from the lo•.I sewer agency. <br /> • Call the I. al spill response hotline immediately(24/7) if any colored water - ters a storm <br /> drain o ater body. <br /> • Dis"ose of the collected sweeping materials, cleaning materials, and air filters ape ropriately. <br /> • %II litter and debris must be picked up and properly disposed of. <br /> • All clean-up must be done within 24-hours of the race event. <br /> S438 BMPs for Construction Demolition <br /> Description of Pollutant Sources: This activity applies to removal of existing buildings and other <br /> structures by controlled explosions, wrecking balls, or manual methods, and subsequent clearing of <br /> 2019 Stormwater Management Manual for Western Washington <br /> Volume IV-Chapter 7-Page 599 <br />