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. ' . . • r � �yy��5� ��..�:�... <br /> ' ' � �� 3 <br /> . '} ,f�!_ �',�+r•� �a „ r i <br /> �'X!� �+%t,^a". � .� f .c�' <br /> � � ���i � e i �F .''�'S �`.'"'Mda",s:5� <br /> - � '�i��� �� ���1�� <br /> ,�f A.. <br /> `�; % �a = Post Office Box 66•Crystal Bay,�iinnesota a-i323•Municipal Offices <br /> ,� <br /> a ti.=ia �. , �,'�Y�,'. <br /> —.E.�i r <br /> �`w'`�� �� ��' On the North Sizore of Lake 1'tifinnetonka <br /> , � _ � 4� <br /> INSTRIICTIONS FOR COMPZ.ETING HARDCOV�R CAI,CUI�ATION WORRSHBET <br /> 1. Circle which setback zone (0-75' , 75-250 ' , etc.} the calculation is <br /> for. <br /> 2. For each iteiu of hardcover within that zone, enter the length and <br /> width, and multiply to get square footage (s.f.). <br /> 3 . Add up all the square footages to get total square footage of <br /> hardcover. <br /> 4 . Divide by the total area of property within the zone and multiply by <br /> 100 to get percentage of hardcover in the zone. <br /> 5 . If changes in hardcover are proposed, you should do a "before" <br /> worksheet and and "after" worksheet. If either results in percentages <br /> greater than those allowed, contact City staff before proceeding with <br /> your project planning! <br /> HARDCOVBR ORDINANC$ - In 1975 , the Orono City Council adopted an <br /> ordinance limiting the percentage of lot area that can be covered with <br /> impervious surfaces ("hardcover") such as roofs, driveways, sidewalks, <br /> 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 <br /> highly urbanized areas have a detrimental impact on the quality of <br /> water in the lake. The intent of Orono's ordinance is to ensure that <br /> 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 /> - Roof s <br /> - Sidewalks <br /> - 'Paved or gravel driveways <br /> - Patios & decks tincludes slatted decks ) - <br /> - Tops of retaining walls & rock walls or fabric <br /> - Decorative Iandscape areas underlain by p lastic sheeting <br /> - Any other surface that does not allow direct absorption of rainfall <br /> into the ground <br /> 'tUILDING&ZONING—473-7357 <br /> • ADMINISTRATTON&FINANCE—473-7358 • PUBLIC WORKS—4�3-7359 <br /> ASSESSING <br />