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The structural control shall be cleaned at least twice a year: once immediately prior to October 15 and once in January. c) The applicant shall submit sizing design criteria to treat stormwater runoff, Low Impact Development and for hydromodification, if required, at the time of PUD plan submittal and an updated detailed copy of calculations with subsequent submittals. d) Landscaping shall be designed to minimize irrigation and runoff, promote surface infiltration where appropriate and acceptable to the project soils engineer, and minimize the use of fertilizers and pesticides that can contribute to stormwater pollution. • Structures shall be designed to prohibit the occurrence arid entry of pests into buildings, thus minimizing the need for pesticides. • Where feasible, landscaping shall be designed and operated to treat stormwater runoff. In areas that provide detention of water, plants that are tolerant of saturated soil conditions and prolonged exposure to water shall be specified. Soil shall be amended as required. (See planting guide line by Alameda County Clean Water Program.) • Plant materials selected shall be appropriate to site specific characteristics such as soil type, topography, climate, amount and timing of sunlight, prevailing winds, rainfall, air movement, patterns of land use, ecological consistency and plant interactions to ensure successful establishment. • Landscaping shall also comply with City of Pleasanton ordinances and policies regarding water conservation. e) All metal roofs, if used, shall be finished with rust-inhibitive paint. f) Roof drains shall discharge and drain away from the building foundation. Stormwater initial flow (approximately 0.2 inches/hour) shall drain to landscaped area or to an unpaved area wherever practicable. B. Construction Requirements 1. The Construction General Permit's construction requirements include, but are not limited to, the following: Construction activities (including other land-disturbing activities) that disturb one acre or more (including smaller sites that are part of a larger common plan of development) are regulated under the NPDES stormwater program. Operators of regulated construction sites are required to develop and implement stormwater pollution prevention plans and to obtain a construction general permit (NOI) from the State Water Resources Control Board to discharge stormwater. Stormwater 1. The applicant shall submit a Stormwater Pollution Prevention Plan (SWPPP) prepared by project Qualified SWPPP Developer (QSD) prior to issuance of building or engineering permits. A signed copy of the SWPPP signed by the Legally