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b. In addition to natural controls, the project developer may be required to install a structural control(s), such as an oil /water separator(s), sand filter(s), or approved equal(s) in the parking lot and /or on the site to intercept and pre -treat stormwater prior to reaching the storm drain. The design, location(s), and a schedule for maintaining the separator shall be submitted to the City Engineer /Chief Building Official for review and approval prior to the issuance of a grading or building permit, whichever is sooner. The structural control shall be cleaned at least twice a year (once immediately prior to October 15 and once in January). c. The project developer shall submit to the City Engineer the sizing design criteria and calculations for a hydromodification facility, if required, and for the treatment of stormwater runoff. The design criteria and calculations shall be subject to the review and approval of the City Engineer and shall be submitted prior to the issuance of a grading or building permit, whichever is sooner. d. Building /Structures shall be designed to minimize the occurrence and entry of pests into buildings, thus minimizing the need for pesticides, as determined by the Chief Building Official prior to the issuance of a building permit. e. The project's landscape and irrigation plans shall be designed to: 1) minimize the use of fertilizers and pesticides that can contribute to stormwater pollution; and 2) promote surface infiltration. Prior to the installation of project landscaping and irrigation, the project landscape architect shall submit a landscaping and irrigation plan to the City Engineer for review and approval and submit written verification stating the project incorporates the following: i. Plants tolerant of saturated soil conditions and prolonged exposure to water in areas that provide detention of water. ii. Plants and soil amendments appropriate to site specific characteristics such as topography and climate. iii. Landscaping and irrigation consistent with Bay - Friendly Landscaping. iv. Water conservation techniques to promote surface infiltration. f. All metal roofs, gutters, and downspouts shall be finished with rust - inhibitive finish /paint as determined by the Chief Building Official. PUD -118 & P16 -0203 4791 Augustine Street Draft Conditions of Approval 23 of 28 Mixed -Use Development