Soil & Groundwater Articles

  • Erosion Protection of Steep Cut Slopes - Case Study

    In May of 1995, 70,000 sf of large-cell (GW40V) GEOWEB® slope protection system was utilized on Phase II of the Cyprus Miami Open-Pit Mine to stabilize the cut slopes upon completion of copper extraction at the site. Aggregate available on site was used to infill the GEOWEB 3D structure and provide erosion resistance and slope-surface stability on slopes with 70-ft. slope lengths, and as ...


    By Presto Geosystems

  • A clean job for Klinger bottle washing systems - Case Study

    Application: Bottle washing equipment Xylem scope: The Lowara Vogel Series e-SHS stainless steel, LSB and e-NSCS cast iron end suction pumps were the right solution for moving water and corrosive liquids in Klinger’s bottle washing machines. The equipment provided combines high efficiency with flexibility and can easily be mounted in small spaces. ...


    By LOWARA - a Xylem brand

  • Ferrous Wear Metal Measurement Made Easy with the FerroCheck

    Historically, one of the most cost-effective indicators of machinery health has been the analysis of ferrous debris in oil. Such analysis utilizes the ferromagnetic properties of generated debris to perform the analysis. Since nearly all wear debris contains ferrous material (in particular iron), an abnormal increase in the amount of debris can be directly correlated to abnormal machinery ...


    By Spectro Scientific

  • Horizontal Well Rehabilitation at NASA Facility

    A horizontal groundwater extraction well at an active NASA facility in Louisiana was impacted by mineral scaling and bio-fouling affecting operations of the groundwater pump and the treatment system. A flow reduction of over 50% was observed. Directional Technologies, Inc. performed a series of horizontal well rehabilitation activities, that increases flow by 58%, which including mechanical ...

  • Hutchinson Finds a Quick Reliable Fix to Cavitation Damage

    The Hutchinson Kansas Water Plant gets its water from twenty wells. The water is pumped out of the wells and into a reverse osmosis water treatment center to purify and ensure safe drinking water. At that point, a portion of the water is taken off from the main line, run through the reverse osmosis system and then mixed back with the well water.  This is used to lower the total dissolved ...


    By Singer Valve Inc.

  • The benefits of a Force-Balanced Sensor

    Your project needs the precision to monitor movement as fine as 1 µG or µradian, but there will also be a lot surrounding noise and vibration that you don’t want to interfere with your readings. If you’re working on something like this, a sensor with force-balanced technology is the answer and here is why. ...


    By Jewell Instruments LLC

  • Modeling BMP’s in Sensitive Areas with xpswmm - King’s Beach Watershed Improvement Project - Case Study

    Introduction Located on the border of California and Nevada, Lake Tahoe (the Lake) is the largest alpine lake in North America. It is known for its scenic beauty and outstanding lake clarity. However, the clarity of the Lake has been declining since the mid-1960s because of the deposition of fine particles and nutrients from urban runoff and the growth of aquatic organisms that feed off the ...


    By XP Solutions

  • Flood modeling and mitigation measures in an Urban Environment –Victoria, Australia - Case Study

    Abstract Accurate prediction of flood extents in urban catchments is extremely difficult without having a 1d/2d integrated modeling approach. The integrated flood modeling is becoming popular and a new benchmark for urban flood risk management studies. City of Glen Eira in Victoria, Australia is a developed metropolitan municipality. The council is responsible for the management ...


    By XP Solutions

  • Hydrodynamic Modeling of SuDS (BMPs or LIDs) schemes - Case Study

    La Marina is an urban area within the Municipality of Elche (South of Alicante, on the Mediterranean Spanish coast), that is rapidly growing. This growth leads to an increase of impervious surfaces, which generate greater run-off volumes with deteriorated water quality. ...


    By XP Solutions

  • Modelling the Thatcham Flood - Case Study

    Overview On 20th July 2007, an unusual storm swept west across England along the approximate line of the M4 motorway. Thatcham, a town in Berkshire, was one of the worst affected. Many towns in England flooded that month from the Humber to Tewksbury. In fact there were 200 major floods worldwide in 2007 affecting 180 million people. Some of these floods were caused by rainfalls much more ...


    By XP Solutions

  • Rock Island adult fishway extension - Case Study

    Rock Island Dam is located on the Columbia River, approximately 15 miles south of Wenatchee, WA. The development of a crack in a spillway of Wanapum Dam, downstream of Rock Island Dam necessitated a 25 foot drawdown of the tailrace. This created a significant obstacle for the fish migrating upstream; they would not have access to the original fish ladder. With the arrival of the ...

  • The elimination of fecal coliforms and e. coli in lagoons

    Many horse racetracks throughout the world are designed to drain water from the track into a lagoon that is located in the infield of the track. Due to the track being predominantly used for horse racing, there is a high amount of fecal coliform, especially of the Escherichia coli species, bacteria in the water that drains from the track. During the racing season, fecal coliform and E. coli ...


    By Reliant Water Technologies

  • Salvaging a WWII Tug in Juneau - Case Study

    The Challenger was built in 1944 for the US Army during World War II. Over the years, the 96-foot wooden tugboat went through many lives, including serving as a “bunk and breakfast” in Seattle. The vessel wound up anchored in Juneau, Alaska as a live-aboard residence. When it was sold to a local artist, the well-worn tug promptly sank in the process of moving it from a dock to a buoy. ...

  • Case study - Lafourche Parish Louisiana Sheriff’s department work release program

    A number of years ago the Lafourche Parish Sheriff’s Department, State of Louisiana, instituted a new program to assist prisoners nearing release to transition back into society. This vehicle requires that inmates pay for their room and board while they learn work skills in industries, such as, shipbuilding, oil field services, food preparation, kitchen management and municipal ...


    By Reliant Water Technologies

  • Clean water is a basic human right, and we can and should make it affordable to everyone

    Ask someone in Flint, Michigan, or São Paolo, Brazil — the list of cities rocked by water disasters seems to grow each day — how much safe water is worth. Worried about contamination and drought, it might be a pretty penny. But the ability of people to actually pay for the full cost of water — from ...


    By Ensia

  • Effective Techniques for Arsenic Removal from Water

    Arsenic is a tricky substance because it is colorless and odorless, making detecting its presence and ensuring its removal at a contaminant site tricky. However, high levels of arsenic can have drastic, fatal effects on wildlife as well as humans if left untreated. If it isn’t properly and fully extracted, serious problems can result. If you’re considering the best industrial ...

  • How to Choose a Company for Water Treatment Systems

    An effective water treatment system is vital, but how do you know that a system is going to work for you? There are a few things that you can look for from the candidates that you’re considering that will help you determine who is a better option to choose to help you improve your system. Their Success Rate If they don’t want to tell you, that lack of transparency ...

  • What You Should Know about Arsenic Treatments

    The nutrients that you put into your body directly impact your health. If you consume water with harmful substances, bacteria, or metalloids, it could create serious issues. While not a metal, arsenic is considered a metalloid because it contains many of the same properties as metallic elements. Typically found in soil, arsenic is harmful when ingested. Unfortunately, many Americans unknowingly ...

  • Concrete Construction Health Effects

    It’s no secret that working in Concrete Construction is dangerous. The immediate safety hazards are well known. Getting speared or cut on rebar, sore from the hard physical labor; cuts or punctures from nails; and struck by tools, materials or equipment can all cause injuries. Add to that possible falls especially at the leading edge; cuts or shock from powered equipment; burns or explosion ...


    By SafetySmart

  • The best way to restore environments in the face of climate change

    Florida’s Kissimmee River once flowed freely. Fish, birds and other wildlife dwelled in the wetlands it fed. But in the 1960s, spurred by public outrage over flooding, the U.S. Army Corps of Engineers straightened the winding waterway and turned it into a drainage canal. Flip forward a few decades and the river is returning — at least in part. The U.S. Army Corps of Engineers has ...


    By Ensia

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