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replace filter materials to ensure effectiveness and to prevent street flooding. f) 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 through being windblown or in the event of a material spill. g) Never clean machinery, equipment, tools, brushes, or rinse containers into a street, gutter, or storm drain. h) Ensure that concrete/gunite supply trucks or concrete/plaster operations do not discharge wash water into street, gutters, or storm drains. i) Equipment fueling area: Use off-site fueling stations as much as possible. Where on-site fueling occurs, use designated areas 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, and check vehicles and equipment regularly for leaking oils and fuels. Dispose rags and absorbent materials promptly and properly. j) Concrete wash area: Locate wash out areas away from the storm drains and open ditches, construct a temporary pit large enough to store the liquid and solid waste, clean pit by allowing concrete to set, breaking up the concrete, then recycling or disposing of properly. k) Equipment and vehicle maintenance area: Use off-site repair shop as much as possible. For on-site maintenance, use designated areas 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 the project site. Train employees on spill cleanup procedures. C. Operation Requirements The Permit's operation and maintenance requirements include but are not limited to the following: The operation and maintenance of treatment measures including but not limited to bio-swales, lawns, landscaped areas with deep-rooted plants, oil/water separator, filterra units, etc., requires completing, signing and recording an agreement with Alameda County recorder's office in a format approved by the State and Alameda County. 1. All projects, unless otherwise determined by the City Engineer or Chief Building Official, shall enter into a recorded Stormwater Treatment Measures Inspection and Maintenance Agreement for ongoing maintenance and 26 of 28