20 Articles found
Willowstick Technologies LLC Articles
-
Headrace Tunnel—Leak Detection - Case Study
This hydropower plant in Central America is a vital part of its country’s infrastructure, supplying 18% of the country’s power. THE PROBLEM: HEADRACE TUNNEL LEAKAGE Our client observed their 4km headrace tunnel had major leakage ...
-
Earthfill Dam—Targeted Remediation - Case Study
THE CHALLENGE An earthfill dam, in Austria, had a planned underseepage, with several piezometers installed to understand the water flowing beneath the dam. The owner wanted to know if there were preferential seepage paths or if the seepage was ...
-
Wimbleball Dam Willowstick Survey - Case Study
Atkins use Willowstick to significantly reduce cost of remediation scheme at concrete dam The cost of a proposed leakage remediation scheme at Wimbleball dam was dramatically reduced after Willowstick identified different leakage path than ...
-
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 ...
-
Shon Sheffrey Dam Willowstick Survey - Case Study
Atkins used Willowstick to design targeted grouting and successfully stop leakage through earth embankment dam Atkins was commissioned by Welsh Water to reduce leakage at earth dam nicknamed “the sieve”. Client admitted they would need ...
-
Samanalawewa Dam Willowstick Survey - Case Study
Willowstick rapidly located leak at dam troubled for decades After 18 years of unsuccessful remediation work costing tens of millions of dollars Willowstick identified the exact leakage pathway in less than a month. This enabled the client to carry ...
-
Shaver Lake Dam Willowstick Survey - Case Study
Willowstick significantly reduces grouting works at heavily reinforced concrete dam A Willowstick survey of Shaver Lake dam successfully identified seepage paths underneath the copper faced dam. As a result the survey significantly reduced the ...
-
King George V Willowstick Survey - Case Study
Atkins used Willowstick to position diaphragm wall and stop leakage through 6.2km long embankment dam With over 6km of embankment locating the exact leakage paths and hence minimising the required diaphragm wall length was made possible with 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 ...
-
Case Study: Dam in Sri Lanka
After 15 years and 18 experts, Willowstick`s AquaTrack™ Steps In. The problem Immediately upon filling the 100 metre high dam, a significant leak occurred—in excess of 8 cumecs—which removed 25,000 cubic metres of fill downstream ...
-
Case Study: Laurel Bed Dam
Background Froehling & Robertson Inc were engaged by the Virginia Department of Game and Inland Fisheries to remediate seepage paths at the Laurel Bed dam. The dam had been leaking in excess of 500 gpm with water leaking in multiple locations. ...
-
Case Study: Granite Rock
The world is changing. Consider the environment: In just a couple of decades, our knowledge of the world around us and how we affect it has caused significant shifts in the way we act. The best example of this lies with our corporate culture, as ...
-
Case study: URS - Identifying remediation locations saved hundreds of thousands
One of the biggest threats to public health today is unsafe water. A billion people across the world don’t have access to clean drinking water, in part because many subsurface aquifers have been poisoned. Perhaps the most famous example of ...
-
Case study: Chevron - Intel gained from Aquatrack avoids a multi-million dollar problem
Introduction Chevron didn’t become one of the world’s largest and most respected energy companies by following others; they got there by blazing their own trail. With their corporate commitment to being a responsible and environmentally ...
-
Case study: RMOTC - Using existing wells, hydro-geologic barriers are mapped.
In August of 2005, Willowstick Technologies, LLC performed an AquaTrack study at the Teapot Dome oil field near Casper, Wyoming. The project was performed together with the assistance of the Rocky Mountain Oilfield Testing Center (RMOTC), a unit of ...
-
White paper on Willowstick technology used for mapping and modeling groundwater systems
1.0 Introduction Willowstick Technology (the “Technology”) delineates and characterizes subsurface aqueous systems in complex hydrogeologic settings. It has consistently proven valuable in: 1) the diagnosis of seepage through earthen ...
-
White paper - RaMPS technology explained
1. Introduction RaMPS, which stands for Resistivity Mono-pole Profiling and Sounding, is a unique and proprietary geophysical survey and exploratory methodology developed by Willowstick Technologies by combining traditional resistivity sounding and ...
-
Assessing seepage flow conditions through a dam quickly and accurately without drilling or drawing down the reservoir
This paper examines the application of a proven geophysical technology that is highly effective in assessing seepage flow conditions through, beneath and around earthen embankments. The technology works rapidly with minimal disruptions to dam ...
-
Willowstick surveys are applicable and affordable on small projects
Over the course of Willowstick`s eight-year history, we have had the opportunity to work with many prominent clients on large, complex projects. As a result of this, many potential clients have had the perception that Willowstick is "expensive" and ...
-
Unique applications of MMR to track preferential groundwater flow paths in dams, mines, environmental sites, and leach fields
Groundwater systems have been notoriously di!cult to map with high degrees of accuracy. As a result, not only have traditional geophysical methods proven inaccurate for groundwater characterization work, but they are often costly in terms of time, ...