Attachment B - Report of Geotechnical Exploration Samson Oceanfront Park Revised

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Report of Geotechnical Exploration November 7, 2014 Samson Oceanfront Park AREHNA Project B-14-124 3 | Page 3.0 FIELD EXPLORATION AND LABORATORY TESTING 3.1 Field Exploration Our scope included one Standard Penetration Test (SPT) boring performed near the proposed location of the stage to a depth of 30 feet and one SFWMD percolation/infiltration test to a depth of 15 feet. The SPT boring was performed with the use of a Power Drill Rig using Bentonite “Mud” drilling procedures. Samples were collected and Standard Penetration Test resistances were measured at approximate intervals of two feet for the top ten feet and at approximate intervals of five feet thereafter. The soil sampling was performed in general accordance with ASTM Test Designation D-1586, entitled “Penetration Test and Split-Barrel Sampling of Soils.” For the percolation/infiltration test, a borehole was advanced at the selected test location by drilling with clean water to the desired test depth. A slotted casing was set in the borehole to maintain its diameter. Clean water was again introduced inside the casing and the level was allowed to rise to the ground surface. The amount of water added each minute for the duration of the test was then recorded. When the inflow rate stabilized, typically after a period of at least 15 minutes, the test was terminated. The data (borehole diameter, test depth, approximate ground water level, inflow rate) was then used to calculate the hydraulic conductivity in accordance with the South Florida Water Management District Permit Information Manual (Volume IV). Representative portions of these soil samples were sealed in glass jars, labeled and transferred to our laboratory for appropriate classification. The boring and test locations are indicated on the Field Exploration Location Map in Appendix A, Figure 2. 3.2 Laboratory Testing Laboratory tests were performed on a representative soil sample in order to classify the soil and to evaluate its engineering properties. Laboratory testing was performed in general accordance with ASTM Standards and included organic, moisture content, and single sieve (#200) grain size. Laboratory test results are presented as Table 1 in Appendix B.