Laserfiche WebLink
O;. O <br />GITYof ORONO <br />Municipal Offices <br />Street Address: <br />2750 Kelley Parkway <br />Orono, MN 55356 <br />Mailing Address: <br />P.O. Box 66 <br />Crystal Bay. MN 55323 0066 <br />HARDCOVER ORDINANCE - In 1975, the Orono City Council adopted an ordinance <br />limiting the percentage of lot area that can be covered with impervious surface ("hardcover") <br />such as roofs, dpveways, sidewalks, etc. on properties located within 1,000 feet of a lake. <br />Studies have shown that sediments, oils, and debris carried into the lake from highly urbanized <br />are« have a detrimental impact on the quality of water in the lake. The intent of Orono's <br />ordinance is to ensure that rainfall run-off will be cleansed by filtering through grassed or <br />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 />500-1000'35% <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 ralnfidl 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 <br />to get square footage (s.f). <br />3. <br />4. <br />5. <br />• • <br />Add up all the square footages to get total square footage of hardcover. <br />Divide by the total area of property within the zone and multiply by 100 to get <br />percentage of hardcover in the zone. <br />If changes in hardcover are proposed, you should do a "before" worksheet godi "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) 473-7357 • FAX 473-0510