03 - Laserfiche WebLink

1. NPDES Permit design requirements include, but are not limited to, the following: a. Source control, site design, implementation, and maintenance standards when a regulated project (such as a residential subdivision project) creates and/or replaces 10,000 square feet or more of impervious surface, including roof area, street, and sidewalk. b. Hydromodification standards when a regulated project creates and/or replaces a total impervious area of one acre or more. c. Compliance with a Diazinon pollutant reduction plan (Pesticide Plan) to reduce or substitute pesticide use with less toxic alternatives. d. Compliance with a Copper Pollutant Reduction Plan and a Mercury Pollutant Reduction Plan. 2. The following requirements shall be incorporated into the project: a. The applicants shall submit a final grading and drainage plan prepared by a licensed civil engineer depicting all final grades and onsite drainage control measures including bioretention swales. Irrigated bioretention swales shall be designed to maximize stormwater entry at their most upstream point. The grading and drainage plans shall be subject to the review and approval of the City Engineer prior to the issuance of a grading or building permit, whichever is sooner. b. The applicants 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. c. 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. d. 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. PUD-116, Bedogar Page 11