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1/4.„� required in accordance with applicable zoning and subdivision provisions of city code. All plan <br />sets shall also be submitted electronically in a .dwg format or as otherwise determined by the <br />City Engineer. The minimum information requirements of the Stormwater Management Plan <br />shall be consistent with the most recent version of the NPDES permit requirements and include <br />the following information: <br />a. A grading, erosion and sediment control plan and, for projects that require a NPDES <br />permit, a Storm Water Pollution Prevention Plan (SWPPP) is required. <br />b. Stormwater Management Plan including existing and proposed hydrologic calculations for <br />total runoff volume and peak discharge rates as described in this chapter, including: <br />1. A narrative including a project description, discussion of BMP selection, <br />incorporation of infiltration BMPs, and revegetation plan for the project site. <br />2. Delineation of all drainage areas, including contributing runoff from off-site areas, <br />proposed and existing subwatersheds on-site, emergency overflows, and drainage ways. <br />3. Existing, proposed, and total amount of impervious surfaces created by the project. <br />4. Existing and proposed runoff curve numbers. <br />5. Time of concentration used in calculations. <br />6. Existing and proposed total runoff volume and peak discharge rates for the 2-, 10-, <br />and 100 -year critical events utilizing NOAA Atlas 14. <br />c. Property of lines and delineation of lands under ownership of the applicant. <br />d. Locations of all stormwater management practices, infiltration areas, and areas not to be <br />disturbed during construction. <br />e. Location of all drain tiles on the project site shall be identified. <br />f. Location and engineered designs for structural stormwater management practices <br />including stormwater treatment devices that remove oil and floatable material (e.g., basin outlets <br />with submerged inlets). <br />g. Normal water level, high water level, and emergency overflow elevations for the site and <br />all ponding systems related to NAVD88. <br />h. Identification of existing and proposed one -foot contour elevations within the project site <br />related to NAVD88. <br />i. Geotechnical analysis including soil borings at all proposed stormwater management <br />facility locations. <br />DRAFT ORD 09-15 CHAPTER 1011STORMWATER & ESC ORDINANCE.DOCX <br />24/29 <br />