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____f__ <br /> 4 oN. <br /> (( 0 OCITYofORONO <br /> `4 ,,f .:!1'1-. <br /> �, Municipal Offices <br /> , , j r _�,1,4)G <br /> \\94 Street Address: Mailing Address: <br /> � $isil0 2750 Kelley Parkway P.O. Box 66 <br /> Orono, MN 55356 Crystal Bay, MN 55323-0066 <br /> HARDCOVER ORDINANCE <br /> In 1975, the Orono City Council adopted an ordinance limiting the percentage of lot area that <br /> can be covered with impervious surface ("hardcover") such as roofs, driveways, sidewalks, etc. <br /> on properties located within 1,000 feet of a lake. Studies have shown that sediments, oils, and <br /> debris carried into the lake from highly urbanized areas have a detrimental impact on the quality <br /> of water in the lake. The intent of Orono's ordinance is to ensure that rainfall run-off will be <br /> cleansed by filtering through grassed or vegetated yard areas before entering the lake. <br /> Hardcover Zones - Allowed Percentages: <br /> 0-75 0% <br /> 75-250' 25% <br /> 250-500' 30% <br /> C50-670-0 35% <br /> Hardcover includes: <br /> - Roofs <br /> - Sidewalks <br /> - Paved or gravel driveways <br /> - Patios & decks (includes slatted decks) <br /> - Tops of retaining walls & rock walls <br /> - Decorative landscape areas underlain by plastic sheeting or fabric <br /> - Any other surface that does not allow direct absorption of rainfall into <br /> the ground <br /> INSTRUCTIONS FOR COMPLETING HARDCOVER CALCULATION WORKSHEET <br /> 1. Circle which setback zone (0-75', 75-250', etc.) the calculation is for. <br /> 2. For each item of hardcover within that zone, enter the length and width, and multiply to get <br /> square footage (s.f.). <br /> 3. Add up all the square footages to get total square footage of hardcover. <br /> 4. Divide by the total area of property within the zone and multiply by 100 to get percentage <br /> of hardcover in the zone. <br /> 5. If changes in hardcover are proposed, you must do a "before" worksheet and "after <br /> worksheet. If either results in percentages greater than those allowed, contact City staff <br /> before proceeding with your project planning! <br /> Telephone(612)249-4600 • Fax(612)249-4616 <br /> 11 <br />