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Indian River County File No. 06-5699 1.0 INTRODUCTION 1.1 Site Location -1- It is our understanding that the project limits consist of the vacant, undeveloped land west of the existing alignment of 20' Avenue SW, between 17th Place SW to the north and 251h Street SW to the south, in Indian River County, Florida. The project limits are located within Section 35 of Township 33 South, Range 39 East. The approximate project limits are shown superimposed on a reproduction of the 1949 Oslo, Florida, USGS Quadrangle map presented as Figure 1. 1.2 Project Considerations Based on information provided to us by GL Homes, and on review of records available from the Indian River County Engineering Department, we understand that 20th Avenue SW currently consists of a one lane, one-way (northbound), undivided rural section with stormwater run-off typically sheet flowing to adjacent grassed areas and drainage ditches. Based on our understanding and review of the "Falcon Trace Survey Control" sheets prepared for the project by Knight, McGuire & Associates, Inc., dated April 27, 2005, the proposed improvements consist of constructing two new travel lanes west of the existing travel lane of 201h Avenue SW between 17" Place SW and 25th Street SW. We further understand that the proposed new centerline -of 201h Avenue SW will be approximately 28 feet west of the existing western edge of pavement of 201h Avenue SW. We have assumed that a curb -and -gutter system and stormwater pipes will direct stormwater runoff to nearby stormwater ponds and drainage ditches. 1.3 Purpose and Scope of Project The purposes of this project were to explore shallow subsurface conditions within the roadway improvement areas and to provide a geotechnical engineering evaluation of,the conditions encountered. We accomplished these purposes by: 1. Obtaining and evaluating readily available geologic and soil survey data. 2. Conducting auger borings at selected locations within the roadway improvement areas and measuring groundwater levels where encountered. ft 3. Observing recovered soil samples in our laboratory and performing tests on selected samples to aid in classification. 4. Analyzing and interpreting the field and laboratory data. 5. Performing engineering analyses to develop recommendations for site preparation.