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The following requirements shall be incorporated into the project: <br />a. The project developer shall submit a final grading and drainage plan <br />prepared by a licensed civil engineer depicting all final grades and on-site <br />drainage control measures including bio-swales. Irrigated bio-swales <br />shall be redesigned as needed to the satisfaction of the City Engineer to <br />optimize the amount of the storm water running off the paved surface that <br />enters the bio-swale at its most upstream end. This plan shall be subject <br />to the review and approval of the City Engineer prior to the issuance of <br />any building permits. <br />b. In addition to natural controls the project developer may be required to <br />install a structural control, such as an oil/water separator, sand filter, or <br />approved equal (in the parking lot) (on the site) to intercept and pretreat <br />storm water prior to reaching the storm drain. The design, locations, and <br />a schedule for maintaining the separator shall be submitted to the City <br />Engineer/Chief Building Official for review and approval prior to issuance <br />of building permits. The structural control shall be cleaned at least twice a <br />year: once immediately prior to October 15 and once in January. The <br />project developer shall enter into a maintenance agreement for the <br />oil/water separator. <br />c. The project developer shall submit sizing designs criteria to treat <br />stormwater runoff at the time of plan submittal. <br />d. Landscaping shall be designed to minimize irrigation and runoff, promote <br />surface infiltration where appropriate, and minimize the use of fertilizers <br />and pesticides that can contribute to stormwater pollution. <br />1. Structures shall be designed to discourage the occurrence and <br />entry of pests into buildings, thus minimizing the need for <br />pesticides. <br />2. Where feasible, landscaping shall be designed and operated to <br />treat stormwater runoff. In areas that provide detention of water, <br />plants that are tolerant of saturated soil conditions and prolonged <br />exposure to water shall be specified. Soil shall be amended as <br />required. <br />3. Plant materials selected shall be appropriate to site specific <br />characteristics such as soil type, topography, climate, amount and <br />timing of sunlight, prevailing winds, rainfall, air movement, patterns <br />of land use, ecological consistency and plant interactions to ensure <br />successful establishment. <br />10 <br />