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<br />~]lCI <br /> <br />engineers & scientists <br /> <br />GROUND PENETRATING RADAR REPORT <br /> <br />Client & Project Information: <br /> <br />BCI Project No.: 03-15564 Client Name: Citizens Property Insurance/ ROL <br />Consulting <br />Project Name: Mathew/ A1ey Rental Client Contact: Rebecca Leisure <br />Property <br />Location: 5012 5th Street Address: 12157 W. Linebaugh Drive #346 <br /> Zephyrhills, FI 33542 Tampa, Florida <br />Contact: Varkey Mathew & Aroma Phone: 813-854-3434 <br />A1ey <br />Phone: 352-567-3737 Claim No.: 223968 <br /> <br />Comments: Interior and exterior walls cracking, ground depression feature in west yard <br />GPR Equipment & Operator Information: <br /> <br />Antenna(s): <br />Manufacturer: <br /> <br />Noggin Plus/SmartCart Digital <br />GPR Profiling System <br />250 MHz, 500 MHz <br />Sensors & Software <br />Ontario, Canada <br /> <br />Equipment <br />Operator(s): <br />Date of <br />GPR Survey: <br /> <br />Lynn McGoff <br /> <br />Control Unit: <br /> <br />September 20,2007 <br /> <br />GPR Survey Information: <br /> <br />No. of Transects Scanned: 28 lines (TO to T27) Total scan distance: 1483 feet <br /> <br />Transect Locations: Transect locations shown in Figure 3 ofBCI Subsidence Investigation report. <br />Transects TO to T24 were completed with the 250 MHz antenna. Transects T25 to T27 were completed <br />with the 500 MHz antenna. <br /> <br />GPR Equipment Settin2:s & Si2:nal Processin2:: <br />250 & 500 MHz Antennas <br />Time Windows: 250 MHz - 130 nanoseconds (ns) <br />500 MHz - 70 nanoseconds (ns) <br /> <br />Depth ofInvestigation: est. 14 to 16 ft (500 MHz) <br />est. 20 to 23 ft. (250 MHz) <br />based on assumed signal travel velocity of 0.45 ftJns <br />(dry sandy soils) <br /> <br />Profile scales: Horizontal scale: 1 inch = 10 ft. <br />Vertical scale: 1 inch = 20 ns (250 MHz) <br />1 inch = 10 ns (500 MHz) <br />Signal Processing: temporal filter: DEWOW (high pass filter) <br />time gain = auto gain <br /> <br />Comments: Time window setting based on test scans over exterior areas of site and <br />identification of surficial soils in hand auger borings (sand soils to;::: 7 ft.). <br />