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� <br /> o� <br /> o ,, o <br /> 3 _�� � C ITY of ORONO <br /> ,� ;���'r�� - �► <br /> , ` biun;c;pal of5ces <br /> �'� ��E�'��" ��l Gti Post o�ce sox 66 <br /> ',� Crystal Bay,Minnesota 5532.�OOG6 <br /> '� `',�j`���..�,�e� .�j <br /> �kESH�4 <br /> HARDCOVER ORDINANCE- In 1975, the Orono City Council adopted an ordinance limiting <br /> the percentage 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 canied into the lake from hiahly urbanized areas have <br /> a detrimental impact on the quality of water in the lake. The intent of Orono's ordinance is to <br /> ensure that rainfall run-off will be cleansed by filterinQ throuQh arassed or vegetated yard areas <br /> 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 into <br /> the ground <br /> INSTRUCTIONS FOR COi�1PLETL'�G HARDCOVER CALCUI.ATIO'_� ��'ORKSHEET <br /> l. 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 <br /> get square footage (s.f.). <br /> 3. Add up all the square footages to �et total square foota�e of hardcover. <br /> 4. Divide by the total area of property within the zone and multiply by 100 to aet <br /> percentage of 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 <br /> before proceeding with your project planninQ! <br /> TELEPHONE-4'�3�7357� FAX-473-0510 <br />