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<br />,n <br /> <br />-LJ <br /> <br />n <br /> <br />LJ <br /> <br />.n <br /> <br />u <br /> <br />n <br /> <br />u <br /> <br />n <br /> <br />u <br /> <br />n <br />u <br /> <br />n <br />u <br /> <br />Ii <br /> <br />u <br /> <br />,n <br /> <br />u <br /> <br />n <br />U <br /> <br />(l <br />u <br /> <br />n <br /> <br />w <br /> <br />(I <br /> <br />LJ <br /> <br />(I <br /> <br />u <br /> <br />n <br /> <br />u <br /> <br />II <br /> <br />u <br /> <br />n <br /> <br />u <br /> <br />Ii <br /> <br />GENERAL SUBSURFACE CONDITIONS <br /> <br />Subsurface Soil Exploration <br /> <br />The exploration of subsurface conditions included review of the United States Soil Conservation <br />Soils Maps and two test borings performed on June 11, 2004. The subsurface exploration <br />addressed foundation requirements and other geotechnical considerations for the proposed <br />construction. Two Standard Penetration Test borings (ASTM 0-1586) werepelformed to depths of <br />forty feet below existing grade. The test borings were pelformed at the location established by the <br />geotechnical engineer. The test borings were located in the field using approximate methods; <br />namely, a measuring wheel and available surface controls. <br /> <br />The driJl technician maintained a field boring report. which indicates depth of each stratum, <br />material type, blow counts, groundwater levels and other pertinent information. All samples were <br />inspected in our laboratory and final test boring reports prepared. A copy of this report is included <br />in the appendix. <br /> <br />SoU Survey Maps <br /> <br />As indicated in the Miami-Dade County Soil Survey Map the series under exploration is the <br />Perrine marl. peat substratum phase. This series consists of nearly level very poorly drained. marl <br />and peat soils overlying limestone. The areas were formerly organic marshes and swamps that <br />were filled for urban use. This soil type is generally located in places along the Intracoastal <br />Waterway. Typically the soils consist of silt and peat in the upper 24 to 60 inches underlain by <br />limestone. We note that the maximum depth of the surveys were typically limited to a depth of <br />approximately six feet. <br /> <br />Test Boring Results <br /> <br />The test borings generally revealed a surface layer of grass and topsoil underlain by medium <br />dense to loose sand and shell to an approximate depth of four feet below grade. From four to nine <br />feet, soft dark brown fibrous peat was encountered which was underlain by loose to medium <br />dense sand to a depth of fourteen feet. From fourteen to thirty-six feet medium hard to very hard <br />limestone with some sand lenses was encountered, that was underlain by medium dense to loose <br />tan sand to a depth of forty feet, the maximum depth explored. <br /> <br />u <br />~NUTTING <br />~~ ENGI~~;'~A~NC. <br /> <br />ESTABLISHED 1817 <br /> <br />3 <br />