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OCT 12 1983 5 PAR 5 118 Acres Co. September 20, 1983 Page 3 to R-lAA, Single -Family Residential District. The R-lAA zoning district requires a minimum lot size of 16,500 square feet and a minimum floor area of 1600 square feet. Most of the lots in this subdivision are 9205 square feet, making it difficult in some cases to meet the setback requirements of the R-lAA district while constructing a house having at least 1600 square feet of floor area. The lots could be developed under R-lAA zoning but may require variances on the size of houses or on setbacks. Roads/Traffic The beach and duneland enclaves have direct access to S.R. A -1-A (classified as an arterial street on the Thoroughfare Plan). Utilizing the maximum density allowed under the existing land use designation, the development of the Forman property would generate 511 average daily trips (ADT) and the northern two parcels would generate 547 ADT. These projected ADT could be reduced by twenty percent by redesignating these enclaves to LD -1. The river enclaves can be expected to have their primary access to Jungle Trail (classified as a local street on the Thoroughfare Pian). Utilizing the maximum density allowed under the existing land use designation, the development of the river enclaves would generate 7260 ADT. The ADTs could be reduced by fifty percent by redesignating these enclaves LD -1. At the present time, S.R. A -1-A could handle the additional traffic generated by the development of the beach and duneland enclaves under the current land use designations. However, Jungle Trail is a dirt road and contains mangroves on its eastern side. Jungle Trail cannot handle 7,260 ADT above its existing traffic. Jungle Trail would have to be paved and have drainage improvements made before it could handle this additional traffic. These improvements could have serious adverse effects on the mangroves between Jungle Trail and the river. Environment For the environmental analysis, the enclaves were divided into two groups, beach and duneland enclaves and river enclaves. Enclaves - Beach & Dunelands The combined beach and duneland system on the Barrier Island is the primary protective defense against coastal storms and flooding along the Atlantic shoreline. The beach system is comprised of four zones: Nearshore - The submerged beach extending seaward as far as the force of waves reaches to the bottom, often the point at which depths reach 40 to 50 feet; Bar - The offshore ridge that may emerge at low tides but is submerged at least at high tides and often permanently; Foreshore - The wet beach, lying adjacent to and below the backshore berms, and extending to the low-water mark; Backshore - The dry beach, lying dunelands that is washed by waves during normal storms and highest 56 adjacent to and below the at least once a year tides. It is made up of M I