Dam Seepage Resistivity Tool Archaeology Resistivity Mapper

As a consultant, your client comes to you with critical questions: Is this site suitable for development? Where is the water? Why is the slope moving? Is the containment working? Your reputation rests on the quality and clarity of your answer. The WGMD-4 Professional Subsurface Diagnostic System is the tool that helps you deliver definitive, defensible answers quickly and cost-effectively. It combines ±1% measurement certainty with 900V of interrogation power and 12+ array configurations to address the widest range of geological and environmental problems. Whether you are working for a municipality, a mining company, or a law firm, the WGMD-4 provides the hard evidence that turns a guess into a recommendation and a recommendation into a signed-off solution.

• "Can we build here?" The WGMD-4's high-resolution 2D/3D imaging maps depth to bedrock, thickness of compressible soils, and presence of voids or old fills. The ±1% accurate profiles give geotechnical engineers the numbers they need for foundation design.
• "Where is the groundwater?" The 900V deep-sounding mode locates aquifers and maps the freshwater-saltwater interface. The SP measurement detects natural flow potentials, indicating permeable zones.
• "Why is the dam leaking?" The Wenner and Schlumberger arrays are optimized for detecting subtle resistivity anomalies associated with internal erosion or preferential flow paths. Time-lapse surveys show how leaks evolve.
• "How far has the plume spread?" The IP mode distinguishes between conductive clay and conductive contamination (e.g., leachate, heavy metals). The multi-channel capability allows rapid coverage of large sites.
• "Is my remediation working?" Repeat WGMD-4 surveys over months or years provide quantitative evidence of decreasing contaminant mass or stabilization of a plume, supporting regulatory closure.

• Pre-Purchase Environmental Site Assessment (Phase II+): Beyond standard soil borings, the WGMD-4 offers continuous spatial coverage to delineate the full extent of any identified contamination. The client gets a 3D plume map, not just point samples, enabling accurate costing of remediation and negotiation of purchase price.
• Quarry and Pit Slope Stability Analysis: The system maps fracture zones, clay seams, and water-saturated layers that could act as failure planes. With ±1% precision, you can advise on catch bench design and dewatering requirements, reducing risk of slope failure and associated liability.
• Leachate and Landfill Cap Integrity: For closed landfills, regulators require proof that caps are intact and leachate is contained. The WGMD-4's shallow high-resolution arrays detect moisture anomalies that indicate cap breaches or sidewall seepage. The IP68-rated cables can be left in place for long-term monitoring.
• Tunnel Route Alignment and Hazard Avoidance: Before the TBM starts, you need to know about fault zones, karst features, and high-pressure water pockets. The WGMD-4's 900V transmitter penetrates hundreds of meters along the proposed alignment, producing a continuous geotechnical log that informs TBM selection and pre-grouting design.
• Forensic Geophysics for Litigation Support: When a construction claim goes to court, you need irrefutable evidence of site conditions at the time of contract signing. The WGMD-4's traceable calibration, documented measurement protocols, and high signal-to-noise ratio (>80dB) produce data that stands up to cross-examination.

The WGMD-4 is not just a resistivity meter; it is a decision-support system. Every feature—from the rugged IP68 case to the real-time QC display to the multiple array geometries—is designed to help you answer your client's question with confidence. When you deliver a report backed by WGMD-4 data, you deliver more than numbers: you deliver certainty. And in the consulting business, certainty is your most valuable product.