Laserfiche WebLink
1 (4) Stormwater management. The following general and specific standards shall apply: <br />2 a. General standards: <br />3 1. When possible, existing natural drainageways, wetlands, and vegetated soil <br />4 surfaces must be used to convey, store, filter, and retain stormwater runoff <br />5 before discharge to public waters. <br />6 2. Development must be planned and conducted in a manner that will minimize the <br />7 extent of disturbed areas, runoff velocities, erosion potential, and reduce and <br />8 delay runoff volumes. Disturbed areas must be stabilized and protected as soon <br />9 as possible and facilities or methods used to retain sediment on the site. <br />10 3. When development density, topographic features, and soil and vegetation <br />11 conditions are not sufficient to adequately handle stormwater runoff using <br />12 natural features and vegetation, various types of constructed facilities such as <br />13 diversions, settling basins, skimming devices, dikes, waterways, and ponds may <br />14 be used. Preference must be given to designs using surface drainage, vegetation, <br />15 and infiltration rather than buried pipes and manmade materials and facilities. <br />16 b. Specific standards: <br />17 1. Impervious surface coverage of lots must not exceed 25 percent of the lot area. <br />18 2. When constructed facilities are used for stormwater management, <br />19 documentation must be provided by a qualified individual that they are designed <br />20 and installed consistent with the field office technical guide of the local soil and <br />21 water conservation districts. <br />22 3. New constructed stormwater outfalls to public waters must provide for filtering <br />23 or settling of suspended solids and skimming of surface debris before discharge. <br />24 (5) Special provisions for commercial, industrial, public/semipublic, agricultural, forestry and <br />25 extractive uses and mining of metallic minerals and peat. <br />26 a. Standards for commercial, industrial, public, and semipublic uses. <br />27 1. Surface water -oriented commercial uses and industrial, public, or semipublic uses <br />28 with similar needs to have access to and use of public waters may be located on <br />29 parcels or lots with frontage on public waters. Those uses with water -oriented <br />30 needs must meet the following standards: <br />31 (i) In addition to meeting impervious coverage limits, setbacks, and other <br />32 zoning standards in this subdivision, the uses must be designed to <br />33 incorporate topographic and vegetative screening of parking areas and <br />34 structures; <br />35 (ii) Uses that require short-term watercraft mooring for patrons must <br />36 centralize these facilities and design them to avoid obstructions of <br />37 navigation and to be the minimum size necessary to meet the need; and <br />38 (iii) Uses that depend on patrons arriving by watercraft may use signs and <br />39 lighting to convey needed information to the public, subject to the <br />40 following general standards: <br />41 A. No advertising signs or supporting facilities for signs may be placed in <br />42 or upon public waters. Signs conveying information or safety <br />43 messages may be placed in or on public waters by a public authority <br />44 or under a permit issued by the county sheriff; <br />45 B. Signs may be placed, when necessary, within the shore impact zone <br />46 if they are designed and sized to be the minimum necessary to <br />47 convey needed information. They must only convey the location and <br />48 name of the establishment and the general types of goods or services <br />49 available. The signs must not contain other detailed information such <br />Page 141 of 160 <br />