well caps Articles
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Measuring Static Water Levels Made Easier with Eno Scientific
The Well Sounder 2010 PRO is a sonic water level meter, designed and manufactured by Eno Scientific, to measure static water level in wells, piezometers or boreholes. This portable handheld unit uses sound waves to measure the distance from the top of the well to the water level. This eliminates the need to lower anything into the well. Unlike standard water level tapes these acoustic meters are ...
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Low Flow Groundwater Sampling Using RotaPump Inertial Lift Pump
This article tells you how to perform low flow groundwater sampling using a portable, surface-mounted pump with no decontamination required before each use and no chance of cross contamination between wells. An inertial lift pump moves a dedicated (stored in the well) pumping tube rapidly up and down. A one-way valve on the bottom admits water on the down stroke and retains water on the ...
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Effective Groundwater Monitoring Using Dedicated Pumping Tubes
This article describes a groundwater monitoring procedure that does not require decontamination of pumping equipment, eliminates the chance of cross contamination between wells, and uses a surface pump. Two surface pumps are described, one for water level depths less than 25 feet and one for water level depths greater than 25 feet. Install Dedicated Pumping Tubes A dedicated pumping tube ...
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Locate buried monitoring wells case study
A Phase II Environmental Site Investigation was being conducted at a gasoline station in Fort Myers, Florida. In order to minimize costs, our client intended to use several existing on-site monitoring wells rather than installing new wells. However, five of the existing wells had been covered with asphalt and were no longer visible. GeoView was tasked with performing a shallow geophysical study ...
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New LFG Collection System Utilizes QED’s Revolutionary LFG Measurement and Control Technology - Case Study
“The main advantage, to me, is the Fine Tune™ Control Valve* that is used on the QED wellhead - it’s one of those revolutionary things in the landfill gas industry. Gate valves don’t give you very good control unless you always want the valve 100% open and you can apply as much vacuum as possible. But when it comes to low-flow wells then it’s important to be able to ...
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GWPD 4—Measuring water levels by use of an electric tape
VERSION: 2010.1 PURPOSE: To measure the depth to the water surface below land-surface datum using the electric tape method. Materials and Instruments An electric tape, double-wired and graduated in feet, tenths and hundredths of feet. Electric tapes commonly are mounted on a hand-cranked and powered supply reel that contains space for the batteries and some device (“indicator”) ...
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Ontario Landfill Site - Case Study
A Texas based company with waste management sites around North America have installed electrical generation plants at various locations that use methane collected from the waste. The daily operation of these sites include the management of the leachate, a liquid waste by-product of decomposition, and the collection of gas for electricity production. This is typically carried out at multiple wells ...
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Waste Fuel Case History
The Customer The company engages in the design, manufacture, and sale of machinery for decomposing petroleum-based materials. The company uses microwave technology for recovering hydrocarbons and fossil fuels from sources, such as tires, oil shale, capped wells, coal, automotive shredded residue, municipal solid waste, shale deposits, and waste oil streams. The Process Different products such ...
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Glass Roller Ball Bottles
Glass roller ball bottles are made of corrosion-resistant thick glass, smooth and impact-resistant, protecting essential oils from UV rays and breakdown. Empty glass roller bottles can be used for essential oils, perfumes, deodorants, aromatherapy cosmetics, sunscreens, moisturizers and more. The roll-on essential oil glass bottles are available in 30ml/1oz, 50ml/1.7oz capacities, and appropriate ...
By Yafu Glass
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Soil Fracturing
Introduction Fracturing is an enhancement technology designed to increase the efficiency of other in situ technologies in difficult soil conditions. The fracturing extends and enlarges existing fissures and introduces new fractures, primarily in the horizontal direction. When fracturing has been completed, the formation is then subjected to vapor extraction, either by applying a vacuum to all ...
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High temperature operation In(Ga)As quantum dot infrared photodetector focal plane arrays passivated with 6.5 nm–thick Al
2O3layerQuantum dot infrared photodetectors (QDIPs) have been shown to be a key technology in broad infrared wavelength (3-12 µm) detection due to their potential for normal incidence operation, low dark current density and higher temperature operation. In our research, we have been investigating infrared detectors based on intersubband transitions in a novel InAs/In0.15Ga0.85As quantum dots–in–well ...
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Another source of methane release
Mary Kang wasn’t even originally looking at methane emissions. The Princeton doctoral candidate was trying to get to the bottom of another issue: carbon dioxide escaping after being stored underground. During that research, she got to wondering about methane emissions from old oil and natural gas wells. What Kang, now a Stanford postdoctoral researcher, and other researchers found could be ...
By Ensia
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CETCO gas vapor barrier chosen by top home builder for site with former oil wells case study
Project: Palisades at Vista del Verde Location: Yorba Linda, CA Products: Liquid Boot 500 Gas Vapor Mitigation System, GeoVent Gas Venting System Background: The Palisades at Vista del Verde is a multi-family housing development that is situated on a site that once was home to numerous oil wells. The oil wells have since been removed and capped, however detectable levels of methane gas are ...
By CETCO
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Doing more than you think
China has a robust climate change policy, including ambitious energy efficiency and renewable energy goals and a long-standing reforestation program. This is not what you will generally hear in the United States, where many ignore China’s domestic programs and focus instead on its refusal to accept targets for reduction of greenhouse gases. Europeans – while more sympathetic to China’s argument ...
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Chemical Industry: Ammonia Emergency Plan Calls on Packed Tower to Scrub Released Chemicals - Case Study
A few years ago Union Camp turned a corner. Management decided that advance planning would take the place of reacting after the fact to an emergency or regulatory agency demands. At Union Camp’s Dover, OH. facility, byproducts of the paper industry are converted into usable specialty chemicals for cosmetics, adhesives and other industries. Crystallization is a process used intensively with ...
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Municipal waste water treatment plant case study
A municipal WWTP in the North of England was experiencing significant problems with accumulations of FOG in the Wetwell at the head of the treatment plant. The FOG would form a solid cap over the well several feet thick. This put considerable strain on the pumping gear, interrupted the performance of the float switches and required regular manual intervention from the staff. High costs were also ...
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Pulp & Paper: Ammonia Emergency Plan calls on Packed Tower - Case Study
A few years ago Union Camp turned a corner. Management decided that advance planning would take the place of reacting after the fact to an emergency or regulatory agency demands. At Union Camp’s Dover, OH. facility, byproducts of the paper industry are converted into usable specialty chemicals for cosmetics, adhesives and other industries. Crystallization is a process used intensively with ...
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Sea Level Rise: Risk and Resilience in Coastal Cities
Introduction One of the most dire impacts of anthropogenic climate change is a rise in the global sea level caused by the melting of glaciers and land-based ice caps, as well as a smaller increase from expansion due to the higher temperature of the water itself. Unlike some other predicted effects of climate change, this impact has already been observed for some time. Indeed, not only is there ...
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Environmental Insurance: Finding a Good Tailor
An article by this author in the December 1999 issue of Brownfield News analyzed two new environmental insurance products, the cleanup cost cap and pollution liability policies, which have proven to be key factors in the success of some contaminated property transactions. The article explained that, to achieve this success, environmental insurance experts need to tailor the policy to the ...
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Design Considerations for Multilevel Monitoring Wells
Untitled Document ABSTRACT Much has been written about the advantages of multilevel (multiport) monitoring wells over clustered or nested monitoring wells, however, there is little published information that provides helpful hints and 'dos and don'ts' for planning successful multilevel well projects. This paper discusses the differences in both design and construction ...
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