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JOB SUMMARY REPORT <br />1 of 7 <br />Order Number:Work Order #695433 Job Date:Aug 14, 2024 11:56:00 PM <br />Customer:39866 CONDOR EARTH Billing Address:CONDOR EARTH188 FRANK WEST CIRCLE SUITE 1STOCKTON CA 95206United States <br />JOB DETAILS <br />Jobsite Location 37.742183, -120.949093, Riverbank, CA <br />Work Order Number Work Order #695433 <br />Job Number <br />PO Number Riverbank WWTP/Dump Site <br />GPRS Project Manager:Kody Tolleson <br />Thank you for using GPRS on your project. We appreciate the opportunity to work with you. If you have questions regarding the results of this scanning, please contact the lead GPRS project manager on this project. <br />EQUIPMENT USED <br />The following equipment was used on this project: <br />·Underground GPR Antenna: This GPR Antenna uses frequencies ranging from 250 MHz to 450 MHz and is mounted in a stroller frame that rolls over the surface. Data is displayed on a screen and marked in the field in real time. The surface needs to be reasonably smooth and unobstructed to obtain readable scans. Obstructions such as curbs, landscaping, and vegetation will limit the efficacy of GPR. The total effective scan depth can be as much as 8’ or more with this antenna but can vary widely depending on the soil conditions and composition. Some soil types, such as clay, may limit maximum depths to 3’ or less. As depth increases, targets must be larger to be detected, and non-metallic targets can be challenging to locate. The depths provided should always be treated as estimates as their accuracy can be affected by multiple factors. For more information, please visit: Link <br />·EM Pipe Locator: Electromagnetic Pipe and Cable Locator. Detects electromagnetic fields. Used to actively trace conductive pipes and tracer wires, or passively detect power and radio signals traveling along conductive pipes and utilities. For more information, please visit: Link <br />·Magnetometer: The Magnetometer detects the magnetic field of a ferromagnetic object by responding to the difference in the magnetic field between two sensors. Data is interpreted in the field by listening to changes in frequency emitted by a speaker on the device. Larger metallic objects can be located at depths of up to 10’ or more, depending on the size, type, shape, and orientation of targets and the amount of interference from other objects. For more information, please visit: Link Link <br />·GPS: This handheld unit offers accuracy down to 4 inches; however, the accuracy achieved will depend on the satellite environment at the time of collection and is not considered survey-grade. Features can be collected as points, lines, or areas and then exported as a KML/KMZ or overlaid on a CAD drawing. For more information, please visit: Link