Agenda - 08-22-2006-9d - Laserfiche WebLink

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~~~3 keeping with this requirement, the deve]oper is proposing to limit impervious surface on each lot to a maximum of 11,000 SF of land area (this includes house footprint, patios, sidewalks, driveways, etc..). This allocation is, of course, simply a maximum limit, so it is quite possible (and actually would be expected) that residents will not maximize the amount of impervious surface on their individual lots. However, if every homebuilder were to actually utilize the maximum amount of impervious surface available on each lot, this would cause 3 7% of the site to consist of impervious surface.. We note that approximately 2.3% of the site is proposed to be used for streets and sidewalks.. Therefore, when the maximum buildable areas on each lot and the streets and sidewalks aze combined (.3.7% + 2.3% = 6.0%), it becomes evident that the overall site will be carefully regulated so that it does not exceed the University Lake watershed impervious surface limitations. In contrast, existing developments, such as the Robins Wood subdivision lots that adjoin Westhampton to the east, may indeed have smaller houses than Westhampton, but they also have much smaller lots and essentially no dedicated open space areas Therefore, even if the house, driveway, and sidewalk for each of these approximate 1.2-acre (or smaller) lots were limited to only 2,000 square feet in impervious surface, they would have approximately the same relative impervious surface impact on the watershed. Because of the amount of open space provided within Westhampton, the amount of land area (outside public right-of-ways) associated with each home is approximately 6.6 acres.. Therefore, the maximum of 11,000 square feet of impervious surface apportioned per lot is equivalent to 3.8% of this associated land azea This compares favorably with Robins Wood lots where a 2,000 square foot impervious surface budget on an approximately 1 2 acre lot (there is essentially no dedicated open space azeas to add to these lot areas) would result in the carne 3 8% of the land outside of public right-of-ways being covered with impervious surfaces. In addition, the Robins Wood lots that adjoin Westhampton have the north-south water feature located east of Westhampton's Pedestrian Open Space Area (POSA) as their rear property lines, with no stream buffer provided at alt, whereas Westhampton will provide a 100' streani buffer measured from each bank. We believe that the combination of the provision of 52.76 acres of open space areas along all of the edges of Westhampton, the incorporation of 100' stream buffers (measured from the bank of the water feahrre for a total of 200'+ of stream buffer), and the larger lot sizes (ranging fiom 2.58 acres to 5.21 acres) within Westhampton combine to provide a superior level of protection for the University Lake watershed that was not previously provided by the existing developments to which it is being compared. (J~eslhmnp(on -Respaise m Sla(jCvmments March 22, 2006 J'nge 4 nJ4