Laserfiche WebLink
HARDCOVER ORDINANr-r=: -In 1975, the Orono City Council --1opted an ordinance limiting the <br />percentage of lot area thaL _dn be covered with impervious sun ..... ..;e ("hardcover") such as roofs, <br />driveways, sidewalks, etc. on properties located within 1,000 feet of a lake. Studies have shown that <br />sediments, oils, and debris carried into the lake from highly urbanized areas have a detrimental <br />impact on the quality of water in the lake. The intent of Orono's ordinance is to ensure that rainfall <br />run-off will be cleansed by filtering through grassed or vegetated yard areas before entering the lake. <br />Hardcover Zones -Hardcover includes: <br />Allowed <br />Percentages: <br />0-75 0% ✓ Roofs, <br />75-250' 25% ✓ Sidewalks, <br />250-500' 30% ✓ Paved or gravel driveways, <br />500-1000' 35% ✓ Patios & decks (includes slatted decks), <br />✓ Tops of retaining walls & rock walls, <br />✓ Decorative landscape areas underlain by plastic sheeting or <br />fabric, or <br />✓ Any other surface that does not allow direct absorption of rainfall <br />into the mound. <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 of <br />hardcover in the zone. <br />5. If changes in hardcover are proposed, you should do a "before" worksheet and "after <br />worksheet. If either results in percentages greater than those allowed, contact City staff before <br />proceeding with your project planning!