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v. Install filter materials (such as sandbags, filter fabric, etc.) at the storm drain inlet nearest the downstream side of the project site in order to retain any debris or dirt flowing in the storm drain system. Maintain and/or replace filter materials to ensure effectiveness and to prevent street flooding. vi. Create a contained and covered area on the site for the storage of cement, paints, oils, fertilizers, pesticides, or other materials used on the site that have the potential of being discharged into the storm drain system by being windblown or in the event of a material spill. vii. Never clean machinery, equipment, tools, brushes, or rinse containers into a street, gutter, or storm drain. viii. Ensure that concrete/gunite supply trucks or concrete/plaster operations do not discharge wash water into a street, gutter, or storm drain. ix. Equipment fueling area: use a designated area away from the storm drainage facility; use secondary containment and spill rags when fueling; discourage "topping off' of fuel tanks; place a stockpile of absorbent material where it will be readily accessible; check vehicles and equipment regularly for leaking oils and fuels; and dispose rags and absorbent materials promptly and properly. Use of an off-site fueling station is strongly encouraged. x. Concrete wash area: 1) locate wash out area away from storm drains and open ditches; 2) construct a temporary pit large enough to store the liquid and solid waste; 3) clean the pit by allowing concrete to set; 4) break up the concrete; and then 5) recycle or dispose of properly. xi. Equipment and vehicle maintenance area: use a designated area away from the storm drainage facility; always use secondary containment and keep stockpile of cleanup materials nearby; regularly inspect vehicles and equipment for leaks and repair quickly or remove from them project site; and train employees on spill cleanup procedures. Use of an off-site repair shop is strongly encouraged. 2. Within 30 days of the installation and testing of the stormwater treatment and hydromodification facilities, the designer of the site shall submit a letter to City Project Inspector/Construction Services Manager certifying the devices have been constructed in accordance with the approved plans for stormwater and C3 design for the project. The letter shall request an inspection by City staff. C. Operation and Maintenance Requirements 29 of 31