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23 <br /> <br />Slide #24 1 <br /> 2 <br /> Christopher Sandt said the darkest green color indicates the watersheds with the most 3 <br />restrictive impervious area restrictions. He said only 6% of a parcel may be impervious there. 4 <br />Next, the medium green areas are 12%. He noted that the state requires only a 12% limit. 5 <br />Commissioner McKee said the 6% impervious surface restriction creates a hardship for 6 <br />anyone who is stressed financially. On a one-acre lot, there are only 2,500 square feet that must 7 <br />include the driveway, deck, and any other impervious area, including the rooftop. He said the limit 8 <br />is 12000 feet on a two-acre lot, which may sound like a lot, but isn’t. 9 <br /> Christopher Sandt said it restricts denser multi-family development. He clarified that 10 <br />people could get approved for up to a 3% bump on the 6% requirement if they install a stormwater 11 <br />control measure that treats the 3% balance. However, he agreed with Commissioner McKee that 12 <br />it is very tough to build a house with a long driveway and try to keep the impervious surfaces 13 <br />under 6%. 14 <br /> Commissioner McKee said the difference in impervious surface requirements creates an 15 <br />equity issue across the county. 16 <br /> Cy Stober said all the base level impervious allowances allow for a 3% additional footprint 17 <br />with the installation of stormwater control measures. 18 <br /> Commissioner McKee asked Cy Stober to explain stormwater control measures. 19 <br /> Cy Stober said stormwater control measures are engineered devices designed to intercept 20 <br />all runoff from any paved area on a property and treat it for volume and sediment, and now 21 <br />nitrogen and phosphorus under the Falls Lakes rules. 22