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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 by being spilled. 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 (if used at the construction site): 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 of 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 is not permitted; use an off -site repair shop is strongly encouraged. 2. Within 30 days of the installation and testing of the stormwater treatment and hydro- modification facilities, the designer of the site shall submit a letter to the 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 The project shall comply with the operation and maintenance requirements of the NPDES Permit. All regulated projects (such as commercial and industrial projects) that create and /or replace 10,000 square feet or more of impervious areas shall enter into a recorded Stormwater Operation and PUD -100 Conditions of Approval (Planning Commission) Chick -fil -A Page 21