Laserfiche WebLink
2. 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 shall <br /> be redesigned as needed to the satisfaction of the City Engineer to optimize <br /> the amount of the stormwater running off the paved surface that enters the <br /> bio-swale at its most upstream end. This plan shall be subject to the review <br /> and approval of the City Engineer prior to the issuance of any building <br /> 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 On the parking lot) (on the site) to intercept and pre-treat <br /> stormwater prior to reaching the storm drain. The design, locations, and a <br /> schedule for maintaining the separator shall be submitted to the City <br /> Engineer/Chief Building Official for review and approval prior to issuance of <br /> building permits. The structural control shall be cleaned at least twice a <br /> year: once immediately prior to October 15 and once in January. <br /> c. The project developer shall submit sizing design criteria to treat stormwater <br /> runoff and for hydromodification, if required, at the time of PUD plan <br /> submittal and an updated detailed copy of calculations with subsequent <br /> submittals. <br /> d. Landscaping shall be designed to minimize irrigation and runoff, promote <br /> surface infiltration where appropriate and acceptable to the project soils <br /> engineer, and minimize the use of fertilizers and pesticides that can <br /> contribute to stormwater pollution. <br /> • Structures shall be designed to prohibit the occurrence and entry of <br /> pests into buildings, thus minimizing the need for pesticides. <br /> • Where feasible, landscaping shall be designed and operated to treat <br /> stormwater runoff. In areas that provide detention of water, plants that <br /> are tolerant of saturated soil conditions and prolonged exposure to water <br /> shall be specified. Soil shall be amended as required. (See planting <br /> guide line by Alameda County Clean Water Program.) <br /> • Plant materials selected shall be appropriate to site specific <br /> characteristics such as soil type, topography, climate, amount and timing <br /> of sunlight, prevailing winds, rainfall, air movement, patterns of land use, <br /> ecological consistency and plant interactions to ensure successful <br /> establishment. <br /> • Landscaping shall also comply with City of Pleasanton ordinances and <br /> policies regarding water conservation. <br /> Page 15 of 21 <br />