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1 2. Development must be planned and conducted in a manner that will minimize the <br />2 extent of disturbed areas, runoff velocities, erosion potential, and reduce and delay <br />3 runoff volumes. Disturbed areas must be stabilized and protected as soon as <br />4 possible and facilities or methods used to retain sediment on the site. <br />5 3. When development density, topographic features, and soil and vegetation <br />6 conditions are not sufficient to adequately handle stormwater runoff using natural <br />7 features and vegetation, various types of constructed facilities such as diversions, <br />8 settling basins, skimming devices, dikes, waterways, and ponds may be used. <br />9 Preference must be given to designs using surface drainage, vegetation, and <br />10 infiltration rather than buried pipes and manmade materials and facilities. <br />11 b. Specific standards: <br />12 1. Impervious surface coverage of lots must not exceed 25 percent of the lot area. <br />13 2. When constructed facilities are used for stoiniwater management, documentation <br />14 must be provided by a qualified individual that they are designed and installed <br />15 consistent with the field office technical guide of the local soil and water <br />16 conservation districts. <br />17 3. New constructed stormwater outfalls to public waters must provide for filtering or <br />18 settling of suspended solids and skimming of surface debris before discharge. <br />19 (5) Special provisions for commercial, industrial, public/semipublic, agricultural, _forestry and <br />20 extractive uses and mining of metallic minerals and peat. <br />21 a. Standards_ for commercial, industrial, public, and semipublic uses. <br />22 1. Surface water -oriented commercial uses and industrial, public, or semipublic uses <br />23 with similar needs to have access to and use of public waters may be located on <br />24 parcels or lots with frontage on public waters. Those uses with water -oriented <br />25 needs must meet the following standards: <br />26 (i) In addition to meeting impervious coverage limits, setbacks, and other <br />27 zoning standards in this subdivision, the uses must be designed to <br />28 incorporate topographic and vegetative screening of parking areas and <br />29 structures; <br />30 (ii) Uses that require short-term watercraft mooring for patrons must centralize <br />31 these facilities and design them to avoid obstructions of navigation and to be <br />32 the minimum size necessary to meet the need; and <br />33 (iii) Uses that depend on patrons arriving by watercraft may use signs and <br />34 lighting to convey needed information to the public, subject to the following <br />35 general standards: <br />36 A. No advertising signs or supporting facilities for signs may be placed <br />37 in or upon public waters. Signs conveying information or safety <br />38 messages may be placed in or on public waters by a public authority <br />39 or under a pelinit issued by the county sheriff; <br />40 B. Signs may be placed, when necessary, within the shore impact zone if <br />41 they are designed and sized to be the minimum necessary to convey <br />42 needed information. They must only convey the location and name of <br />43 the establishment and the general types of goods or services available. <br />44 The signs must not contain other detailed information such as product <br />45 brands and prices, must not be located higher than ten feet above the <br />46 ground, and must not exceed 32 square feet in size. If illuminated by <br />47 artificial lights, the lights must be shielded or directed to prevent <br />48 illumination out across public waters; and <br />49 C. Other outside lighting may be located within the shore impact zone or <br />50 over public waters if it is used primarily to illuminate potential safety <br />51 hazards and is shielded or otherwise directed to prevent direct <br />Attachment A — Ordinance #23-14 <br />Page 125 of 141 <br />