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No grading shall occur between October 15 and April 15 unless approved erosion control/stormwater quality measures are in place, subject to the approval of City Engineer/Chief Building Official. Such measures shall be maintained until such time as permanent landscaping is in place. iii. Gather all sorted construction debris on a regular basis and place in the appropriate container for recycling; to be emptied at least on a weekly basis. When appropriate, use tarps on the ground to collect fallen debris or splatters that could contribute to stormwater runoff pollution. iv. Remove all dirt, gravel, rubbish, refuse, and green waste from the street pavement and storm drains adjoining the site. Limit construction access routes onto the site and place gravel on them. Do not drive vehicles and equipment off paved or graveled areas during wet weather. Broom sweep the street pavement adjoining the project site on a daily basis. Scrape caked on mud and dirt from these areas before sweeping. 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 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 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 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 Maintenance (O&M) Agreement for treating stormwater runoff from the site in perpetuity. The agreement is required to be recorded at the Alameda County Recorder's Office in a format approved by the City. 26