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41 <br /> . Option One <br /> • Clarify "impervious surface" definition to more clearly state that it includes all <br /> surfaces and structures (including decks). <br /> .. Impervious Surface is any material that reduces or prevents the <br /> infiltration of storm water into previously undeveloped land. Impervious <br /> surface shall include all buildings and structures (including decks), as <br /> well as driveways (paved or gravel), sidewalks, parking areas and patios. <br /> A surface that has been compacted or covered with a layer of material so <br /> that is is highly resistant..to infiltration-by.water.will be.considered <br /> impervious. <br /> • Increase.the lot coverage-maximum for-lots-that are below the current <br /> requirements of 75 feet in width and 9000 square feet in area to 40%. <br /> The advantage of this option is simplicity. (Impact of change on storm water runoff) <br /> Option Two <br /> • Change `impervious surface" definition to exclude-decks (and patios?) that <br /> meet certain requirements. <br /> Impervious Surface is any material that substantially reduces or prevents <br /> the infiltration of storm water into previously undeveloped land. <br /> Impervious surface shall include all buildings, driveways (paved or <br /> gravel), sidewalks and parking areas. A surface that has been <br /> compacted or covered with a layer of material so that is is highly <br /> resistant to infiltration by water will be considered impervious. <br /> It shall not include: <br /> Decks that meet the following requirements: 1) the area below the deck . <br /> is not impervious 2) spacing between decking? <br /> Patios that meet the following requirements: <br />