Laserfiche WebLink
AROUND <br /> PENETRATING <br /> RAD A R <br /> SYSTEMS. INC. <br /> a: <br /> Advanced Geo Environmental <br /> Site:Pilkington Glass Plant <br /> Project:PNA-SWIS <br /> Re:GPR Investigation to Locate Landfill Area <br /> We appreciate the opportunity to provide this summary of our findings for our work completed on 6/30/15 at the <br /> above site in Lathrop,CA. <br /> Purpose <br /> The purpose of the scanning was to locate the outlining boundries of the landfill area. <br /> Equipment <br /> • Ground Penetrating Radar(GPR), Manufacturer:GSSI, Model:SIR-3000 processing unit with <br /> 400 MHz antenna. GPR works by sending pulses of energy into a material and recording the strength and the time required <br /> for the return of the reflected signal.Reflections are produced when the energy pulses enter into a material with different electrical <br /> conduction properties from the material it left.The strength of the reflection is determined by the contrast in conductivity between <br /> the two materials.The total depth achieved can be as much as 8'with this antenna but can vary widely depending on the dielectric <br /> properties of the materials.For more information,please visit:http://www.geophysical.com/Documentation/Brochures/GSSI- <br /> UtilitvScanBrochure.pdf <br /> RD7OOO pipe locator, Manufacturer: Radiodetection.The RD7000 can detect the electromagnetic fields from <br /> live power or radio frequency signals.It can also be used in conjunction with a trasmitter to connect directly to accessible,metallic <br /> pipes,risers,or tracer wires. A tone is sent through the pipe or tracer wire at a specific frequency which can then be detected by the <br /> receiver. For more information,please visit:http://www.sox.com/en/radiodetection/pd-rd7000/ <br /> Process <br /> Our process begins with collecting scans with GPR across the areas in a grid pattern. Scans are typically spaced <br /> 2'apart depending on the size of the targets being searched for. The GPR data is interpreted in real time and <br /> anomalies in the data are located and marked on the surface with spray paint,pin flags,etc. <br /> The RD7000 is used to locate pipes or utilities at the soil boring locations. We first sweep all areas with the <br /> receiver to detect live power or radio frequency signals followed by connecting to any visible risers or tracer wires <br /> that may be in the area. <br /> Page 1 of 5 <br />