static water level monitoring Articles

  • The Importance of Dynamic Density Compensation in Water Level Monitoring

    OBTAINING SUPERIOR WATER LEVEL ACCURACY IN COASTAL ENVIRONMENTS In-Situ Inc. water level instruments measure the sum of all pressures (atmospheric and hydrostatic) exerted on a pressure transducer and use that data to calculate water levels. Water density contributes to the total hydrostatic pressure. Saltwater has a higher specific gravity than fresh water. A standard column of saltwater ...


    By In-Situ, Inc.

  • Case study - Ozone sparging closure of an industrial VOC spill site adjacent to a water supply well site

    Description An undocumented surface spill at an active manufacturing facility located adjacent to a public water supply well field released chlorinated volatile organic compounds (PCE, and its breakdown products: TCE, c-DCE, and VC) into soils and groundwater.  The driver for site cleanup was three water supply wells located 200 feet downgradient of the site bounds.  The chosen ...

  • Groundwater Contamination Plume Remediation - Case Study

    19 CMT Multilevel Systems Successfully Installed in Challenging  A facility in Pontypool, Wales, UK was once the location of a plastic forming plant. Over time, chemicals produced through the plastic forming processes were lost into the groundwater beneath the facility, creating a large contaminant plume. Years later it was determined that the plume is ...


    By Solinst Canada Ltd.

  • 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 ...


    By RotaPump, Inc

  • Rapid portable cross-connection detection by sensitive fluorescence spectroscopy

    Abstract The implementation of dual reticulation systems for returning recycled water to the home for nonpotable use is now common in new Australian housing developments. Managing the associated public health risk requires consideration of the potential for crossconnections between recycled and potable water pipes. While current protocols for detection exist, they are time consuming and ...

  • Evaluating groundwater/surfacewater transition zones in ecological risk assessments

    Currently, there is a common perception that the discharge of contaminated groundwater to a surfacewater body does not pose an ecological risk if contaminant concentrations in surface-water samples are below analytical detection limits or at very low concentrations. The transition zone represents a unique and important ecosystem that exists between surface-water and the underlying ground-water, ...

  • The case for automatic weirs

    With hosepipe bans returning to parts of the country this summer, it’s easy to forget the disastrous floods of recent years – unless, of course, you were personally affected. This year’s harsh winter and modest levels of spring and summer rainfall belie a growing trend of more extreme weather events hitting the UK and a pattern of warmer winters and wetter summers. As we saw ...


    By Kijlstra Precast Ltd.

  • ‘New for old’ dust analyser deal brings 96.66% data capture rates to NE Lincs

    With the UK’s largest port and the industrial town of Grimsby in its jurisdiction, air quality monitoring is a primary concern for North East Lincolnshire Borough Council. When DEFRA reported that the TEOM dust analysers the council relied on weren’t up to standard, rapid action was required and Enviro Technology (ET) stepped in with its BAM 1020s. North East Lincolnshire is the ...

  • Biogen Greenfinch Westwood - Case Study

    Beyond keeping the engines running, Westwood’s CHPs have an impressive 99 percent uptime at 41 percent biogas to electricity and useable-heat efficiency. These high rates will make substantially positive profit impact over the several years of investment payback.  Watching the biogas as it comes from the gasholder and travels towards the CHPs and water heating boilers is a Geotech ...

  • PPCPs: Preparing for an uncertain regulatory future

    A recent study published in Environmental Pollution* identified 56 active pharmaceutical ingredients (APIs) in effluent samples from 50 large wastewater treatment plants across the U.S. Among the products found in samples were commonly prescribed anti-psychotic and antihypertensive drugs. As more studies continue to fuel public concerns over risks to public health and the environment, wastewater ...

  • Measuring and interpreting gas flow from landfill boreholes case study

    Current landfill gas measurement practice for measuring the gas composition is well understood, and there are standard procedures and instruments available to analyse the gas. It is also current recognised practice to measure the gas 'flow' from boreholes to monitor the production of gas in a landfill site. If care is taken to make the measurement in the same way each time, changes in the ...

  • Gas detector communication technology for offshore oil and gas platforms

    In few applications is safety as important as on offshore oil and gas platforms. Explosive hazards from hydrocarbon gases and vapours are an ever-present risk, whilst toxic hydrogen sulphide gas and depleted oxygen environments can pose significant risks to personnel. Gas detectors are therefore essential to provide dependable early warning of gas hazards. Gas detectors are permanently installed ...

  • Scientists, a new quota species?

    Globally, marine conservation is high on the agenda. The need to protect and conserve species and habitats from deleterious anthropogenic impacts has never been of more concern than it is currently. However, that is not to say we, as a society, are achieving effective marine conservation, in fact we are far from it. Global summits have come and gone, as have the targets they set for marine ...

  • Air Pollution Control in the Printing and Web Coating Industries

    For many U.S. companies in the printing and web coating business, the use of an Air Pollution Control System (APCS) to control harmful air pollutants is not new.  In these industries, depending upon their location, companies have been installing APCS since the early 1970's.  However, for some companies the clock is still ticking regarding their compliance with local, state and federal ...


    By The CMM Group, LLC

  • Composting releases less air pollution than previously thought - study

    A new study funded by the California Integrated Waste Board (CIWMB) indicates that well-managed composting of green waste and food waste releases significantly less air pollution than previously thought. The study also demonstrates that a relatively inexpensive management technique - covering active compost piles with a layer of finished compost - may lower air emissions even further, by as ...


    By BioCycle Magazine

  • State-wide collection of site remediation data in support of environmental quality objectives

    Geographic Information Systems (GIS) hold great potential as a tool for managing environmental site remediation data. While noting the location of contaminated sites in GIS is commonplace, GIS has played only a minor role in review and analysis of chemical data gathered during an investigation or monitoring activity. The New Jersey Department of Environmental Protection Site Remediation Branch ...


    By EarthSoft, Inc

  • Catalytic Oxidizers…What You Should Know.

    Within the U.S., depending upon specific plant operations, geographic locations, etc.,  many companies concerned with controlling VOC emissions have been operating air pollution control systems for years.  However, due to business expansion, plant modifications or recent changes in EPA guidelines, an increasing number of companies are now finding it necessary to install new emission control ...


    By The CMM Group, LLC

  • Tower rescue: first-in operations and the IAP

    Across the country “tower” type rescues are becoming more and more common.  Accordingly, there is a growing need for local rescuers to be aware of these sites in their response areas, pre-plan for different rescue scenarios, and train their specialized rescue personnel to the appropriate level in order to facilitate the rescue in a safe manner.  Tower rescues have become so ...


    By Elevated Safety, LLC

  • E-Z Trays® Treating Multiple Groundwater Contaminants in Grand Island, NE - Case Study

    The U.S. Environmental Protection Agency has launched an effort to treat contaminated groundwater in Grand Island, Nebraska. The Parkview Well Superfund Site consists of two areas of groundwater contamination, the Northern and Southern Plumes, which include several volatile organic contaminants including tetrachloroethene (PCE), 1,1-dichloroethene (DCE), 1,1,1-trichloroethane (1,1,1-TCA) and ...

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