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CITY of ORONO <br />.. HARDCO"V'ER ORDINA ... NCE <br />In 1975, the Orono City. Council adopted an ordinance limiting the percencag~ of lot _area that <br />.can be covered w.ith·impervious surface ("hardcover") such as roofs, driveways,. sidewalks, etc. <br />on properties located within 1,000 feet of a lake. Studies have shown that sediments, oils, and <br />debris carried into the lake from highly urbanized areas have a detrimental impact on the quality <br />of water in foe lake~ The intent of Orono's ordinance is to ensure that rainfall run-off will be <br />cleansed by filtering through grassed or vegetated yard areas before entering the lake. <br />Hardcover Zones -_.tjlowed Percentages: <br />. 0-75 0% <br />75-250' 25% <br />.. 250-500' 30% <br />Hardcover. includes: . <br />-Roofs <br />-SidewaLl(s <br />500-1000' 35% <br />-Paved or gravel driveways <br />-Patios & decks (includes slatted decks) <br />-Tops of retaining \Yalls & 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 />..... · <br />E\STRUCTIONS FOR COlvIPLETING H.ARDCO\'ER CALCULATION \YORKSHEET <br />1. <br />2. <br />... .:,. <br />4. <br />5. <br />Circle which setback.zone (0-75', 75-250', etc·.) the calculation is for. <br />.For each item' of ha.rdcov.er with~n that zone; ~nter the length and ·v.-·idth, and ~ultlply to <br />get square footage (s.f.): .. <br />Add up all the square footages to get tot.al square footage of hardcover~ <br />Divide by t.4e total area of property within the zone and multiply by 100 to get <br />percentage of hardcover in the zone. <br />If changes in hardcover are proposed, you must do a "before" worksheet an~ 1'2.fte_~ <br />worksheet. If eithe-r results in percentag~s greater than those allowed, contact Ctty start <br />before proceeding with your project planning!