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viii. Ensure that concrete/gunite supply trucks or concrete/plaster operations do not <br /> discharge wash water into a street, gutter, or storm drain. <br /> ix. Equipment fueling area: use a designated area away from the storm drainage <br /> facility; use secondary containment and spill rags when fueling; discourage <br /> "topping off' of fuel tanks; place a stockpile of absorbent material where it will be <br /> readily accessible; check vehicles and equipment regularly for leaking oils and <br /> fuels; and dispose rags and absorbent materials promptly and properly. Use of <br /> an off-site fueling station is strongly encouraged. <br /> x. Concrete wash area: 1) locate wash out area away from storm drains and open <br /> ditches; 2) construct a temporary pit large enough to store the liquid and solid <br /> waste; 3) clean the pit by allowing concrete to set; 4) break up the concrete; and <br /> then 5) recycle or dispose of properly. <br /> xi. Equipment and vehicle maintenance area: use a designated area away from the <br /> storm drainage facility; always use secondary containment and keep stockpile of <br /> cleanup materials nearby; regularly inspect vehicles and equipment for leaks and <br /> repair quickly or remove from them project site; and train employees on spill <br /> cleanup procedures. Use of an off-site repair shop is strongly encouraged. <br /> 170. Within 30 days of the installation and testing of the stormwater treatment and <br /> hydromodification facilities, the designer of the site shall submit a letter to City Project <br /> Inspector/Construction Services Manager certifying the devices have been constructed in <br /> accordance with the approved plans for stormwater and C3 design for the project. The <br /> letter shall request an inspection by City staff. <br /> Operation and Maintenance Requirements <br /> The project shall comply with the operation and maintenance requirements of the NPDES <br /> Permit. All regulated projects (such as commercial, industrial, residential subdivision, mixed <br /> use, or public projects) that create and/or replace 10,000 square feet or more of impervious <br /> areas (5,000 square feet for auto service facilities, retail gasoline outlets, restaurants, and <br /> uncovered parking lots) shall enter into a recorded Stormwater Operation and Maintenance <br /> (O&M) Agreement for treating stormwater runoff from the site in perpetuity. The agreement is <br /> required to be recorded at the Alameda County Recorder's Office in a format sipproved by City. <br /> 171. The Operation and Maintenance Agreement shall clarify that the property owner(s) of the <br /> site shall be responsible for the following in perpetuity: <br /> a. Maintaining all private stormwater treatment measures on the project site. <br /> b. Annually submitting a maintenance report to the City Operations Services <br /> Department, Utilities Division, addressing the implementation of the Operation and <br /> Maintenance Agreement requirements. <br /> The final Operation and Maintenance Agreement shall be submitted to the Engineering <br /> Division prior to the issuing grading or building permit, whichever comes first. The <br /> Agreement is subject to review and approval of the City Engineer/City' Attorney, prior to <br /> recordation. <br /> 29 of 30 <br />