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9 <br /> 4,5- to 6.0-acre Lots, <br /> Planning Staff Revised Scale: <br /> Between lot sizes of 0.5 and 4.5 acres, the square footage allowed in impervious surface <br /> increases incrementally from 2,777 square feet to 13,231 square feet. For lot sizes <br /> between 4.5 and 6.0 acres, the square footage decreases incrementally from 13,231 <br /> square feet to 11,761 square feet. <br /> Planning Board Adjusted Scales: <br /> In order to equalize disparities in square footage for lots between 4.5 and 6.0 acres, the Planning <br /> Board recommended that the sliding scale stop at 5.0 acres, or at minimum be revised to <br /> eliminate the decrease in impervious surface square footage as lot size increases from 4.5 acres <br /> to 6.0 acres. The Planning Board expressed concern that the scale would discourage the creation <br /> of larger lots due to the loss of allowed impervious surface. <br /> If the sliding scale stops at five acres, then all lots larger than five acres would be <br /> subject to a 6% impervious surface limit. The impervious surface limit would increase <br /> by 2,618 square feet for each acre over five acres. <br /> If the impervious surface limit "levels off" at 4.5 acres, then the impervious surface <br /> which would be allowed on lots between 4.5 and 6.0 acres is maintained at about 13,330 <br /> square feet (plus or minus about 10 feet). The impervious surface limit would increase <br /> by 2,204 square feet (5.06% ISR) for each acre over six acres. <br /> Lots Large than 6.0 Ares <br /> Planning Staff Revised Scale: <br /> According to the Planning Staff revised scale, 11,761 square feet of impervious <br /> surface would be allowed on a six-acre lot and would increase by 1,960 square <br /> feet for every acre thereafter. <br /> Planning Board Adjusted Scales: <br /> If the sliding scale stops at five acres, then 15,686 square feet of impervious <br /> surface would be allowed on a six-acre lot and would increase by 2,618 square <br /> feet for every acre thereafter. <br /> If the impervious surface limit "levels off" at 4.5 acres, then about 13,300 square <br /> feet of impervious surface would be allowed on a six acre lot, and would increase <br /> by 2,204 square feet for every acre thereafter. <br /> 5 <br />