monitoring well plug Articles

  • Abandoning Monitoring Wells: Safety Issues

    Monitoring wells are typically constructed to gauge the extent of contamination, assess water quality and conduct other hydrogeologic studies. Depending on its objective, the monitoring well may remain in use or may be abandoned permanently. When declared inactive, the well is many a times left as it is. Open unused wells are hazardous to life and environment: • Contamination may spread from one ...

  • An asymptotic observer-based monitoring scheme for a class of plug flow reactors

    In this paper a monitoring tool is designed for a class of plug flow reactors whose mathematical model is described by a set of first-order partial differential equations with different coefficients in the convective terms. The infinite dimensional structure of such a tool is derived according to the methodology established in the design of the well-known asymptotic observer. As a consequence, it ...


    By IWA Publishing

  • Time to change habits, as well as light bulbs?

    November 16, 2010 We are bombarded daily by advertisements selling us soft drinks, pharmaceuticals, cars, insurance, junk food, teeth whitener, diet programs, and on and on. But when was the last time someone tried to sell you on using more electricity? I cannot think of a single commercial that encourages us to plug-in, even though electricity is the chief product of 3,000 utilities in the ...

  • An inflatable plug works better than bypass pumping when closing off a 60-inch penstock

    When Brian Simon, a project manager at Grace-Titan DVBE (based in Redding, California) first looked at the Potter Valley Bypass job it looked difficult, but straightforward. Grace-Titan was being asked to remove a section of the penstock that supplies Pacific Gas & Electric's (PGE) Potter Valley hydroelectric plant and install a Y-branch. But that meant that the five-foot diameter penstock ...


    By Petersen Products Company

  • Can I monitor multiple points on one datalogger?

    Yes – using the Ebro EBI-310 USB datalogger you can monitor up to 3 points with one unit. The logger has a built in sensor, but by adding an adapter and external probes the one unit can monitor the temperature of up to 3 locations. This could mean monitoring the laboratory room temperature, ...


    By Camlab Limited

  • Differential Pressure and Temperature Monitoring in a Hospital Cleanroom

    Accsense A1-01a Wireless Environmental Data Loggers CHESTERLAND OH—April 9, 2012 CAS DataLoggers recently provided the wireless pressure and temperature monitoring solution for a hospital maintaining a surgery cleanroom to protect patients from a variety of environmental contaminants. Staff entered and exited through airlocks and were required to wear cleanroom suits before entering. Air ...


    By CAS DATALOGGERS

  • Sub-frost artesian environmental packer

    Artesian environmental well casings in cold regions pose a number of problems: Icing around the wellhead may pose safety concerns The true head cannot be measured without plugging the casing If the casing is plugged on the surface, freezing action may rupture the casing even if it is steel, almost certainly if it is PVC. The Sub-frost Artesian Environmental ...


    By RST Instruments Ltd.

  • Case study - TPH Oil & Grease applications

    These case studies illustrate the performance generated from customers who have used Sitelab’s UVF-3100 analyzer for testing total petroleum hydrocarbons in the C10 to C50 range. Sitelab’s TPH-Oil calibration kit is designed to correlate well to laboratory “Oil and Grease” test methods. This includes EPA Methods 1664 and 9071B by Gravimetric, EPA Method 418.1 by Infrared ...


    By Sitelab Corporation

  • Case study - QED pumps are the pumps of choice at North America’s largest landfill

    The Puente Hills Landfill in Los Angeles County, California, is the largest operating landfill in North America based on daily tonnage received.  Located in an unincorporated area of Los Angeles County near Whittier, California, it is owned and operated by the Sanitation Districts of Los Angeles County.  It has received approximately 118 million tons of solid waste as of April 2008, ...


    By Geotech

  • Optimization of EVO delivery improves enhanced reductive dechlorination of groundwater

    Optimization of an emulsified vegetable oil (EVO) delivery system led to uniform distribution and ongoing biological treatment of a PCE source area last summer at the former Naval Training Center (NTC) in Orlando, FL. Remedial efforts targeted contaminated ground water at a former laundry and dry cleaning facility at NTC's Operable Unit 4 (OU4), where earlier injections of potassium permanganate ...

  • Minnesota Dairy Runs Hydrogen Fuel Cell on Biogas

    Untitled Document Demonstration project with ...


    By BioCycle Magazine

  • LDAR deficiencies lead to enhanced requirements

    Leak detection and repair (LDAR) programs are required as part of the standards established in 40 Code of Federal Regulations (CFR) 60 (NSPS), 40 CFR 61 (NESHAP), 40 CFR 63 (MACT), and 40 CFR 264 (Hazardous Waste Handling). An LDAR program is a facility’s system of procedures used to locate and repair leaking components (e.g., valves, pumps, connectors, compressors, and agitators) to ...


    By Trinity Consultants

  • Clarifier maintenance

    Clarifiers are expensive, to buy or repair, and their downtime can be costly in fines imposed by regulatory agencies and in community ill will. Regular maintenance, an annual inspection of the mechanism and an occasional touchup of the paint or coating system are simple and inexpensive proactive steps that will usually prevent most problems. Three components of all clarifiers require maintenance: ...


    By WesTech Engineering, Inc.

  • Enhanced LDAR in the chemical industry

    As a result of recent leak detection and repair (LDAR) audits and the associated issues (as described in the Winter 2009 issue of Environmental Quarterly), EPA is initiating enhanced LDAR programs as part of the most recent consent decrees.1 The enhanced LDAR programs for chemical facilities are more stringent than the enhanced LDAR previously required for the petroleum refining industry. ...


    By Trinity Consultants

  • UV disinfection for enhanced oil recovery and other oilfield applications

    One of the biggest challenges facing oil companies today is how to extract more oil from the discoveries made in the last 40 years. Estimates vary, but approximately 66% of the discovered oil gets left in the ground. The International Energy Agency has estimated that if, in the next 20 years, this figure could be reduced to 50%, then this would increase the world's recoverable oil by 1.2 trillion ...


    By atg UV Technology

  • Primary Drinking Water from Wastewater Effluent: Pilot Test Experience at the Miami Dade South District WWTP

    ABSTRACTThe Miami-Dade Water and Sewer Department (MDWASD) owns and operates the South District wastewater Treatment Plant in Goulds, Florida. This is a 225 mgd peak flowrate secondary oxygen activated sludge treatment facility that discharges effluent via deep injection wells. Based upon the detection of nitrogen species in the monitoring wells for the deep injection well system, MDWASD entered ...

  • Continuous processing solution for bakery cuts energy usage by 30% and increases dough consistency

    When we enjoy a pizza at our favorite restaurant, we don’t wonder if the bread’s consistency is as good as it could be. But the bread’s quality is a huge concern for large industrial bakeries that produce the dough for that pizza crust. Those bakeries look to their equipment makers to help them provide the best-quality dough at the lowest cost. One of those equipment makers is ...


    By Hardy Process Solutions

  • Mid-infrared analysis of biodiesel

    The biodiesel industry is growing rapidly. and so is the need for analysis 10 ensure quality product and keep biodiesel in good standing. Biodiesellhat has residual glycerin, glycer· ides, or inorganic salts from the production process can cause problems such as Iilter plugging and injector coking in a diesel engine. The biodiesel blend ralio also can affect cold weather performance, lax ...


    By Spectro Scientific

  • Smart grid and stupid buildings: Can this marriage survive?

    Smart grid is still in its honeymoon phase. Hardly a day goes by without fanfare in the news about how it will reform building energy use. Maybe so. But for the marriage of smart grid and US buildings to work, someone's got to change. Is the stupid building up to the task? “Wiring the Smart Grid for Energy Efficiency,' a white paper by Oregon-based Portland Energy Conservation Inc (PECI), brings ...


    By Energy Efficiency Markets

  • Fuel Polishing & Transfer Systems

    Earlier this year, Algae-X International came out with a totally new line of Fuel Polishing & Transfer Systems designed and built there in Fort Myers, Florida facilities. By listening to its customers, boat builders and yacht owners alike, Algae-X found out what they wanted to have as an on board fuel optimization package. The design is modular, so the right system can be chosen for each ...


    By AXI International

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