Agenda - 09-04-2014-13 (7) - Laserfiche WebLink

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M iii. It was not until 1999 that the County required subdivision projects to accommodate roadway development, with respect to the allocation of impervious surface area, independent of individual lots. Orange County's current practice requires the developer to define the total improved roadway network necessary to support a division of property and then subtract impervious area this from the cumulative allowable impervious surface area for a given parcel. The remaining, allowable, impervious surface area would then be distributed to each proposed lot. EXAMPLE: Triple Crown Farms Major Residential Subdivision (approved by the BOCC on June 17, 2014) was 104 acres in area in a Watershed Protection Overlay District limiting impervious surface area to 6% or 271,814 sq. ft. The applicant anticipated proposed roadways would encumber approximately 76,773 sq. ft. leaving 195,172 sq. ft. of impervious surface area available to support development. The proposed lots range in size from 1.59 (smallest) to 6 (largest) acres in area. The applicant distributed this available impervious surface area amongst the proposed 20 single - family residential lots ranging from 4,999 sq. ft. of impervious surface area for the smallest lot (7.2 %) to 19,490 for the largest lot (7.4 %). Subdivisions approved prior to 1999 were not required to deduct the road area from the overall impervious surface limits for a given project. The result has been confusion for several property owners as to how much impervious surface area they have truly been allotted as part of the subdivision process. If the proposed rule is adopted, it is possible the County will have to modify current policy if it is to be consistent with State standards to `spell out' the specific class of gravel exempt from classification as built upon area. As of right now the County continues to have the option of being more restrictive than State law. It needs to be remembered there has been discussion of requiring local governments to be no more restrictive than the State. If this occurs then obviously we will no longer have this ability. Issue: Staff and Board members have received numerous complaints /inquiries over the years related to the possibility of increasing allowable impervious surface area within various Watershed Protection Overlay districts or exempting gravel as being considered `impervious surface area'.