air quality screening Articles

  • Pulp & Paper Water Treatment - A look at optimizing water resource management

    Application Case Study (Pulp/Paper Operations) The pulp and paper industry has traditionally been a consumer of large amounts of fresh water and power. Recently, increased focus has been given to the optimized efficiency of paper mills and to the environmental sustainability footprint of the industry. Therefore, water resource management has become a more critical factor ...

  • First evaluation of a novel screening tool for outlier detection in large scale ambient air quality datasets

    Systematic collection of long term meso- to large-scale datasets of ambient air quality provides an indispensible means for air pollution monitoring. However, the quality of these monitoring data depends on the chosen method of measurements and the QA/QC procedures applied. We present the first version of a prototyped screening tool for the automatic detection of outliers in large data volume ...


    By Inderscience Publishers

  • Quality control in dispersion modeling: Validation of a screening model for PM10 and NO2

    European air quality guidelines require gathering information about air quality at locations where the population is affected or possibly affected by high concentrations. High concentrations are often found in densely built up streets with high traffic loads. In order to identify these hot spots and to assess possible measures to improve the situation, screening models are widely applied in ...


    By IVU Umwelt GmbH

  • Dynamic Air Quality Solutions - Celebrating Thirty Years!

    This year we are very pleased to celebrate the thirtieth anniversary of the first one-inch polarized-media electronic air cleaner. It was thirty years ago that the first polarized-media electronic air cleaner, produced under our “Dynamic Air Cleaner” brand, was introduced. As with many high-efficiency filtration products, polarized media has its roots in industrial applications. ...

  • Multi-Stage Air Quality Monitoring in the Workplace

    CAS DataLoggers recently supplied the environmental datalogging solution for a factory with a small series of office rooms experiencing serious air quality issues. Employees reported headaches during the work day, indicating a possible lack of adequate ventilation. These workspaces were located next to the busy factory floor which caused an incidental ...


    By CAS DATALOGGERS

  • Vapor intrusion and indoor air quality due diligence during property transactions

    Vapor intrusion (i.e. the migration of volatile chemicals from contaminated soil and/or ground water through the subsurface into overlying building structures) as a contributing indoor air has become a growing concern for property owners and prospective purchasers in recent years as it can cause significant indoor air quality problems. This is largely due to the increased focus on this issue by ...

  • A Review of 1-Hour NO2 NAAQS Air Quality Modeling

    During the development of this 4TR article, proposed revisions to Appendix W to 40 CFR Part 51 – Guideline on Air Quality Models (Guideline) were published in the Federal Register. As a result of revisions which propose to establish Tier 3 nitrogen dioxide (NO2) atmospheric chemical reaction screening techniques as default methods, ...


    By All4 Inc.

  • Staff spotlight: atmospheric scientist tackles complex air quality issues

    George Schewe, a Certified Consulting Meteorologist and Qualified Environmental Professional, joined Trinity’s Covington, Kentucky office in 2008. A veteran of EPA with nearly three decades of consulting experience, George is well-versGeorge Schewe_photoed in air quality regulatory requirements and a master in complex air dispersion modeling analyses. Here is George’s take on his role ...


    By Trinity Consultants

  • You look after the quality of your Swimming Pool water but what about the Indoor Air Quality (IAQ)?

    You are looking after the quality of your swimming pool water but what about the indoor air quality too? Swimming pools (and swimming pool plant rooms) can release all sorts of "nasties" into the poolside environment and accidents happen all too often. Help to protect your staff, bathers and spectators alike with this sophisticated electronic air monitoring & warning system NEW from ...


    By PPM Technology

  • Screening of volatile organic compounds as a source for indoor pollution

    For a considerable period of time the presence of an increasing number of chemicals has been observed in almost all aspects of human life. This process also affects the living and working environment of man. Human development, including physical and mental health and well-being, depends on to a great degree on the surrounding environment. Considering that an average person spends a significant ...


    By Inderscience Publishers

  • Screening method for regulatory purposes in the Argentine Republic

    This paper presents a comparison between the screening method in accordance with the requirements of the Argentine regulations and the detailed screening procedures recommended by the United States Environmental Protection Agency (US-EPA). Both methodologies are applied to different scenarios of point sources in rural and urban areas. The intercomparison between both screening estimations is ...


    By Inderscience Publishers

  • Air quality assessment in the European mega city Ruhr area: Effects of a low emission zone

    The Ruhr area is the biggest German megalopolis, a conglomerate of several intertwining major cities, with more than 3.5 million inhabitants. In spite of many efforts in recent years to improve the air quality in the Ruhr area, especially residents in street canyons with a high traffic density are still exposed to poor air quality, and meeting the limit values of European air quality directives ...


    By IVU Umwelt GmbH

  • Air quality assessment in the European Mega City Ruhr Area and effects of low emission zones

    The Ruhr area is the biggest German megalopolis, a conglomerate of several intertwining major cities, with more than 5.3 million inhabitants. In spite of many efforts in recent years to improve the air quality in the Ruhr area, especially residents in street canyons with a high traffic density are still exposed to poor air quality and meeting the limit values of European air quality guidelines ...


    By IVU Umwelt GmbH

  • Screening technique to estimate high benzo[a]pyrene concentrations near roads

    The emission factors of benzo[a]pyrene for gasoline cars and for diesel cars were measured by directly collecting the exhaust gas using a portable sampling equipment and became 660 ng km–1 and 1700 ng km–1, respectively. The regression equations to easily evaluate the concentrations at the roadsides and at the crossroads were introduced as the functions of building height, road width, ...


    By Inderscience Publishers

  • Assessment of traffic congestion in Hong Kong, and prediction of street-level CO concentration using a graphical screening method

    The rapid growth in vehicle population and traffic volume in the past few years has offset the efforts of government to improve the poor traffic conditions in Hong Kong. This has intensified traffic congestion and hence the traffic-related pollution problems in the territory of Hong Kong, particularly in urban areas. Prediction was carried out using a simple graphical screening (SIMGS) method to ...


    By Inderscience Publishers

  • Retro-Coatâ„¢ Achieves Site Closure by Meeting Environmental Screening Levels Case Study

    Lombard Street Retrofit – San Francisco, CA Retro-Coat™ (patent pending) was selected to mitigate vapor intrusion within a structure built in 1907 that had been impacted by both a former underground storage tank and a local dry cleaner. Indoor air samples taken prior to application showed chlorinated solvent-based PCE and TCE levels above the ...

  • Start up of Indonesian Cinnamon Plant employs screen classifying cutter, rotary mixer

    Starting up a new process plant can be a tricky business for any company, but when it is the first plant the company has ever built and the location is halfway around the world from equipment suppliers, the project can be daunting. So it was with ForesTrade, Inc., when it set about building Indonesia's first state-of-the-art organic cinnamon-processing plant and an associated essential oils plant ...

  • New NO2 air standards prove technically challenging

    On February 9, 2010, the U. S. Environmental Protection Agency (EPA) established a new National Ambient Air Quality Standard (NAAQS) for nitrogen dioxide (NO2). The new NO2 NAAQS is a one-hour standard set at 100 parts per billion (ppb), which is approximately 188 micrograms per cubic meter (μg/m3). Effective on April 12, 2010, the new one-hour standard is intended to protect against peak ...


    By Trinity Consultants

  • 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

  • Air Pollution Control: Ready for the 21st Century

    The textile industry is plagued by air pollution problems which must be resolved. In particular, smoke and odor arising in the process require abatement. Air pollution control technology is available today which will serve the textile industry well into the 21st century. The nature of the problem The major air pollution problem in the textile industry occurs during the finishing stages, ...


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