UXO Services
The principal objective of unexploded ordnance (UXO) geophysical surveys is to detect the presence of UXO and/or safety remediate UXO contaminated areas. Accuracy is critical; We achieve accuracy by adhering to stringent Standard Operating Procedures (SOP’s), selecting the most appropriate geophysical instrumentation to detect UXO items for a specific site, and using the highest resolution land survey systems available [e.g., survey-grade RTK Global Positioning Systems (GPS), robotic total station (RTS) systems, and psuedo-satellite systems (PSS) or “psuedolites”]. We often integrate the geophysical and land survey data into a Geographic Information System (GIS) to capture all the attributes (e.g., aerial photos, utility plans, and cultural resource information) and provide a “one-stop” data management tool used by our customers. Prior to performing a UXO survey, we usually conduct a geophysical prove-out (GPO) employing multiple geophysical systems to determine which system is best suited for site specific objectives, soil conditions and other factors. The GPO also provides several unique data sets that aid with UXO discrimination, confirmation and quality assurance of production survey results. Typical methods used by FPM Geophysical and UXO Services to conduct UXO investigations include:

  • GPS / GIS
  • Potential field (magnetics)
  • Ground-penetrating radar (GPR)
  • Time & frequency-domain Electromagnetics (EM)


    • Key Benefits

  • Characterize the distribution, type, depth, and condition of UXO across a site
  • Cost-effectively identify and delineate any areas of concern with imminent UXO/OE hazards, and sweep, remediate and dispose of UXO/OE
  • Provide detailed subsurface information that can be used to refine Munitions Response Site (MRS) or Range boundaries, update existing conceptual site models (CSM), determine if No Further Action (NFA) is required, or to refine the Scope of Work (SOW) cost estimates for subsequent remedial investigations (RI) or EE/CA reporting
  • Provide information on the subsurface that is not economically obtainable by other means


    • Typical Objectives

  • Location / Relocation of UXO
  • Site investigation / assessment
  • Quality assurance and quality control (QA/QC)
  • Engineering evaluation and cost analysis (EE/CA)
  • Geographic information system (GIS) information management
  • Evaluate concrete/pavement thickness and rebar rebar position (GPR, impact echo)
  • UXO Remediation or remedial planning / design / investigation (target density & extent)