Subsurface Monitoring Articles

  • Birmingham, AL I-59/I-20 Corridor Project - Birmingham, Alabama, United States - Case Study

    Project Summary Project Located in the Birmingham Business District, the ...

  • Texas Earthen Dam Seepage Flow Path Study - Case Study

    Willowstick characterizes seepage flow paths through through the dam Background An engineering company was set to build a new outlet structure for a reservoir. They had been monitoring the dam for seepage and wanted to gain a better understanding of where seepage was occurring. Of significant importance to the client was the desire to characterize any preferential seepage ...


    By Willowstick Technologies LLC

  • The Use Of Innovative Groundwater Seepage Detection Techniques - Case Study

    INTRODUCTION Groundwater seepage can exacerbate environmental pollution through contaminant transport, pose a threat to dam safety and can also be associated with valuable mineral deposits. Dam safety, environmental remedial works and mineral location normally involve comparatively expensive techniques, but, if the extent and location of groundwater seepage can be accurately ...


    By Willowstick Technologies LLC

  • Ada Lewis Building - Wembley, UK - Case Study

    The Ada Lewis building on the Empire Way in Wembley is an impressive vertical construction housing a total of 84 residential homes, 27 privately owned and 57 d officially protected, an initiative designed to help address the shortage of adequate housing for homeless families in the zone. The pellet ...


    By EVOWORLD GmbH

  • Using a Ground Penetrating Radar (Important terms)

    Air Low dielectric (~1), high velocity material i.e. EM waves travel almost at the speed of light. In air the emission pattern of GPR antennas is broader than in the ground. It is recommended to place the GPR as close to the ground as possible to direct emission energy further into a material. Some applications of GPR include emission exclusively in air.Ground / ...


    By Oerad Tech Ltd

  • Zero Emissions through State-of-the-Art SF6 Gas Handling

    Introduction This article gives an overview on current international regulations, state-of-the-art SF6 gas handling equipment and SF6 re-use based on DILO’s “zero emission” philosophy. Pros and cons SF6 is a non-toxic, inert insulating and quenching gas of high dielectric strength and thermal stability and has been successfully used ...

  • Navigating uncertain ground using the right equipment

    Starting with specialization It started with one man and his pickup truck. Tom Banks’ then one-man operation was rooted in specialization. Formed in 2001, Banks Gas Services, Inc. quickly grew from one employee to nearly one hundred. Today the company is a full-fledged gas distribution contractor headquartered in the Pittsburgh area and serving gas distribution companies in ...


    By McLaughlin Group, Inc.

  • Using Resistivity for Basalt Site Characterization - Case Study

    Purpose A mining company in Turkey hoped to determine existing and new alternative basalt zones at an existing basalt mining site by using Electrical Resistivity Imaging (ERI). Process Our client, Ali Karan, used 84 electrodes spaced at 10 meters and two lines 5 meters apart inside the study ...


    By Advanced Geosciences, Inc.

  • Searching for Potential Unmarked Graves Near San Antonio, Texas - Case Study

    Our client, Terracon, used AGI tools and software in order to identify whether or not there were unmarked graves near a family cemetery and a known historical site for homesteaders near San Antonio, Texas. Process Our client was interested in mapping an area being developed near a cemetery that dated back to 1899. The client used the ...


    By Advanced Geosciences, Inc.

  • Locating Groundwater Wells for Fracking Operations in West Texas - Case Study

    In June 2014, our clients used AGI resistivity imaging tools to successfully locate a 125-gallon-per-minute groundwater well in West Texas as well as geohazards that could, if left unlocated, cause significant damage to property and increase costs. Process Our clients used the ...


    By Advanced Geosciences, Inc.

  • How the City of Tavares, FL utilizes a Vacuum Excavator - Case Study

    The City Director came to Phillip Clark, Water Supervisor for Tavares, FL – America’s Seaplane City, with details of a surplus in the budget. “What can we add to our fleet to work smarter and not harder? What out there in the industry is new and innovative?” He asked. Mr. Clark is constantly researching and reading about what is innovative and groundbreaking. He says that ...


    By Vac-Tron Equipment

  • Master Plan of Drainage for Redlands - Using advanced storm drain modeling techniques to identify historical flooding issues - Case Study

    The city of Redlands, California, has a long history of flooding during moderate to severe storm events. The historic downtown area resides just downstream of the confluence of four major tributaries. The four tributaries run into a single storm drain under Redlands Boulevard, which routes flows through the downtown. The existing capacity of the current facility is approximately 2,000 cu ft per ...


    By Innovyze

  • Evaluation of Ageratum conyzoides in field scale constructed wetlands (CWs) for domestic wastewater treatment

    Ageratum conyzoides were evaluated in field scale subsurface flow constructed wetlands (CWs) to quantify its nitrogen (N) and phosphorus (P) uptake and compare with wetland plants (Pistia stratiotes, Typha latifolia and Canna indica). The two-field scale subsurface flow CWs, located in the International Crops Research Institute for Semi-Arid Tropics, received wastewater ...


    By IWA Publishing

  • Use and application of Piezocone Penetration testing in Presumpscot Formation

    Abstract: This paper examines the advantages and limitations of CPTu and SCPTu as an exploration method for geotechnical engineering of Presumpscot Formation. Discussion will include typical results of CPTu and SCPTu data for Presumpscot Formation, application and use for settlement prediction, bearing capacity analysis, slope stability evaluation, and seismic design considerations. Intent is to ...

  • GPR archaeological investigation of Wanda Mound in Krakow (Poland)

    Last December 2016 GPR24.COM.PL Company (Poland) participated in an archaeological investigation on the legendary Wanda Mound in Krakow city. This hill was built supposedly in VII—VIII centuries and it is assumed to be the resting place of the legendary princess Wanda, which was a daughter of Krakus, the founder of ...


    By Transient Technologies LLC

  • Methods used to carry out six roadway investigations of sinkholes

    Abstract Karst conditions are a prevalent problem impacting many roads, bridges and highways of the United States. Six case-histories present an overview of investigations made to determine the presence of karst (sinkholes and cavities) and their possible impact on existing or new construction. These six case-histories represent projects which range from reconnaissance investigations to ...


    By Geonics Limited

  • Raw material cycle: from chip to briquette to product - Case Study

    Thanks to their briquetting system from RUF Frischhut can redeploy production scrap and melt it again Ludwig Frischhut GmbH and Co. KG have closed the circle on their raw material cycle by utilising a briquetting press from RUF: cast chips produced during the machining of parts for water supply and sewage disposal are pressed to solid briquettes and then melted in the in-house foundry and ...

  • Mapping exploitable gravel layers with Electrical Resistivity Tomography

    Geoelectrical measurements in a gravel pit were used to map exploitable gravel layers, to estimate their thickness and measure the overburden. 9 profiles with a length between 235 and 715m have been measured. The maximum penetration depth was about 45m. Visualizations on maps and in 3D fence diagrams show the distribution of the mineable gravel layers and simplify the planning of the ...


    By Geo2X

  • Concrete Water Tank Relining and Repair Case Study

    These images show the concrete tank before any preparation work and then after preparation and concrete water tank relining and repair. The concrete tank was fully relined with Acothane DW. This underground, concrete, water storage tank is located at a university and sized at approximately 12m x 3m x 3m. The fibre glass lining that had been previously applied to the floor and part of ...


    By Acothane UK Ltd

  • The impact of robotics on neurosurgery

    Stuart Campbell, Clinical Sales Development Manager of the Neurological Products Division at Renishaw, discusses key trends on the use of robotics in neurosurgery. The curious case of Phineas Gage is one of the earliest and best known cases of serious brain injury. On September 13th, 1848, Gage was working as a railway foreman in Vermont when an explosion caused a three foot long iron rod to be ...


    By Renishaw plc

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