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, <br /> - -- " . <br /> � O� <br /> O O ' <br /> ��.r:�, � CITY o� 4R�N0 <br /> '�" ���'���1-�.. � P OPBce� <br /> Jy �nsf,.� <br /> `�' Crystal BaY��fmnesota 55323�0066 <br /> 'C�.L'�,;' �����,�'yG <br /> �.k s��p� <br /> gA.RDCOVER ORDINANCE- In 1975, t�e Orono City Council adopted an ordinance limitina <br /> the percenta�e of lot area that can be covered with impervious surface ("hardcover") such as <br /> roofs, driveways, sidewalks, etc. on properties located within 1,000 feet of a lake. Studies have <br /> shown that sediments, oils, and debris carried into the lake from hiQhly urbanized areas have <br /> a detrimental impact on the qualiry of water in the lak�et�ouQh aras edOor�egetated yard area�s <br /> ensure that rainfall run-off will be cleansed by filterui� � ,. <br /> before enterina the lake. <br /> Hardcover Zones - Allowed Pe O�o tages: <br /> 0-75 <br /> 75-250' 25% <br /> 250-500' �Q�° <br /> 500-1000' 35 90 <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 �round <br /> L�STRUCTIO�'S FOR COti1PLETLti'G HARDCOVER CAI.CULATION `VORKSHEET <br /> 1, Circle which setback zone (0-75', 75-250', etc.) the calculation is for. <br /> �. For each item of hardcover wichin that zone, en[er the lenath and width, and multiply to <br /> get square footaQe (s.f.). <br /> : 3, Add up all the square footaaes to get total square foota�e of hardcover. <br /> 4. Divide by the total area of property within the zone and, multiply by 100 to �et <br /> percentaoe of hardcover ul the zone. <br /> If chanQes in hardcover are proposed, you should do a "before" ed I ontact City staff <br /> 5. � <br /> worksheet. If either results in percentaces �reater than those allow , <br /> before proceedin� with your project planni.na! <br /> : ... <br /> .Fax-a�-osio <br /> .. . _. . . ��xotvE-a�s� � <br />