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� °� <br /> o : o <br /> -;.=,=�;.:t�=,_�, CITY of ORONO <br /> , a ,. . � � <br /> �.:. _. „� c� *,� � <br /> 1 � _y�, .�`j;�f .� �i1 . . l�lu�C�� �lllCe$ <br /> \� i i \/'1 i I 4" �' .. . . . �.. <br /> �:1�� .�����",� SVeet Address: Mailing Addross: <br /> �t`����+3q4 2750 Kelley Parkway P.a. Box 66 <br /> Orono, MN 55356 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, driveways, 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 /> areas 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 rainfall <br /> _ into the ground <br /> INSTRUCTTONS 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. 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 <br /> percentage of hardcover in the zone. <br /> S. If changes in hardcover are proposed, you should do a "before" worksheet n�d "after" <br /> worksheet. If either results in percentages greater than those allowed, contact City staff <br /> before proceeding with your project planning! <br /> 9 <br /> Telephone (612) 473-7357 • FAX 473-0510 <br />