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Y ' Indian River Countv Public Works Department Proposed North County Regional Park June 15 , 2000 FIELD INVESTIGATION A total of twenty (20) Standard Penetration Test Borings ( SPTs) were taken at designated locations across the site . Thirteen ( 13 ) SPTs were taken in the areas of the proposed swimming pools and ' building areas, and are designated on the boring logs and the layout map as SS (split spoons) borings . Six (6) SPTs were taken within the proposed lake areas and one ( 1 ) SPT was taken in the center of the soccer field area, and are designated on the boring logs and the layout map as SB (soil borings) . A water management district Hydraulic Conductivity Test was also performed. The approximate test locations are noted on the layout drawing and the boring logs are enclosed . Depth, as noted on the logs, represents the depth below the existing grades at the time the borings were taken. The SPT borings were completed employing mud rotary techniques. Samples of the in-place materials were recovered using a standard split barrel driven with a 140-pound hammer freely falling ' 30 inches (ASTM D- 1586, 'Penetration Test and Split-Barrel Sampling of Soils ") . Samples collected from the borings were returned to our office where they were visually classified . SUBSURFACE CONDITIONS iThe subsurface conditions are relatively consistent throughout the site . Below an approximately 6- inch thick layer of soil containing surface organics, the soils in the upper 2 to 2 . 5 feet are fine sands having minimal silt/clay content and are in a generally medium dense condition. Below the surface fine sands to the termination depths of the SPTs, the soils are fine sands containing varying amounts of silt and clay, and are in a generally medium dense to loose condition. The depth to the groundwater at the time the borings were taken ranged from 4 . 3 to 5 . 2 feet below the existing grades. It is our opinion the water table levels noted on the boring logs are about 1 foot below the average dry season water table due to the recent prolonged dry period. We estimate the average wet season water table levels are about 4 feet above the noted levels or within 1 foot of the ground surface . FOUNDATION ANALYSIS AND RECOMMENDATIONS The results of the test borings indicate suitable subsurface soil conditions for support of the proposed structures using conventional shallow footing foundations. All site preparation, any excavation and backfilling required during site preparation, fill placement, and excavation for footings should be performed as outlined in the following section. Please note that the recommendations in the ' following section include compaction of the original ground prior to fill placement. Our soil bearing capacity recommendations are contingent upon adequate testing of the original ground as well as the foundation fill. ' 2 Fraser Engineering and Testing, Inc .