air quality compliance Articles
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Ethylene Production – A Tale of Explosive Growth and Air Quality Compliance
ALL4’s Oil and Gas Sector Initiative was conceived in response to the renewal of the domestic oil and gas industry, associated primarily with the use of hydraulic fracturing (or fracking) and horizontal drilling in shale formations (e.g., Marcellus, Haynesville, Bakken, Eagle Ford) and the impact of greatly expanded oil and gas production on gathering/midstream operations, gas ...
By All4 Inc.
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Confronting allegations of air quality non-compliance
A facility with an air quality permit must comply with all the conditions of that permit and demonstrate its compliance on an on-going basis. Unfortunately, no matter how diligently the facility and corporate staff strives to assure continuous compliance, unexpected compliance challenges can occur. For example, new equipment fails the emissions guarantees provided by equipment vendors; new staff ...
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Improving The Accuracy Of Dispersion Models
Ever since dispersion models were first developed over 30 years ago, their accuracy has been subject to scrutiny. If automobile speedometers are accurate within five percent and orifice meters are accurate within about one percent, why can’t dispersion models be just as accurate? The early documents on dispersion modeling referred to accuracy as a “factor of 3.”(1) By the 1970’s, dispersion ...
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`Air Permitting for a New Coal-Fired Power Plant,` published in Power magazine, November
Prevention Of Significant Deterioration (PSD) Construction of any new source, including a greenfield power plant, is subject to New Source Review (NSR). If the source is located in an attainment area, it will also trigger Prevention of Significant Deterioration (PSD) permitting, as required by the Clean Air Act (CAA) for major stationary sources of air pollution in attainment areas. A major ...
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Minimising Risks to Air Quality and Regulatory Compliance With Total Filter Management
It has been shown in recent studies that as much as 25% of the total site operating budget (excluding raw material costs) for a typical medium-large dosage-form manufacturing facility will be spent on compliance measures for internal quality systems and external regulatory activities. (1) Market realities indicate that the pharmaceutical companies will need to address the overall cost of ...
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Continous Emission Monitoring (CEMs)
Presented in Track B1: CEMs at EUEC 2011,January 31 Phoenix, Arizona B1.1 | Particulate CEM for wet FGD plant William Averdieck | Managing Director, PCME Ltd The use of Particulate CEMS after Wet Flue Gas Desulpherisation (FGD) plant has new relevance in North America due to the low levels (typically 1- 5mg/m3 of submicron particulate)and the presense of water droplets and steam ...
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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 ...
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A dynamite job? Cleaning up trinitrotoluene waste at the Apache powder superfund site.
The clean up of trinitrotoluene (TNT) wastes and contaminated soils from an abandoned TNT salvage operation is underway at the Apache Powder Superfund Site in Cochise County. Clean-up operations involved an unexploded ordnance (UXO) survey, on-site pre-burn of high-grade materials, excavation, and off-site disposal. Approximately 5,400 lb of high-grade TNT wastes (averaging approximately 33 ...
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Dust monitoring with ProSens on clean gas side - Case Study
Application An international mining company extracts minerals under ground for the fabrication of fertilizers. For the long term improvement and safety of the structure stability fi llings and binders (dry bulks) with defi ned recipes are injected locally into former mining cavities. These materials are delivered above ground, stored in silos and afterwards transported in a closed-pipe ...
By ENVEA
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Smart Parking Sensor Technology - Case Study
Our smart parking sensor technology helps to reduce air pollution and save drivers time. Applying advanced, yet simple to install technology, drivers can be directed to available car parking spaces. The Challenge. Vehicles are a big contributor to carbon emissions and as cities and towns get busier, finding a parking spot can be highly polluting and time consuming. Governments ...
By Vortex
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Vertical Fume Scrubber: An Effective Solution for Industrial Air Pollution Control
Introduction A vertical fume scrubber, also known as a vertical scrubber tower or vertical wet scrubber, is a highly efficient air pollution control device utilized in industrial settings. This article aims to provide a comprehensive overview of vertical fume scrubbers, their working principles, components, and benefits. By understanding the key features and advantages of vertical fume scrubbers, ...
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Lost in Translation: Why Cultural Competency is an EHS Essential for Global Expansion
While the business world is ripe with opportunities for companies to expand into new countries and markets, one crucial element that is often overlooked—and even discounted—is culture. As Robert Salomon, professor of International Management and Faculty Scholar at NYU’s Stern School of Business, said in a recent interview: “Culture is the least well understood of all of ...
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Smart LDAR — more cost-effective?
On December 19, 2008, EPA issued a final rule establishing a voluntary Alternative Work Practice (AWP) to detect leaks of volatile organic compounds (VOC) and hazardous air pollutants (HAP) from process equipment (FR Vol. 73, Number 246), thereby providing the regulated community additional flexibility in complying with leak detection and repair (LDAR) requirements. The AWP allows owners or ...
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New Nitrogen Dioxide Ambient Air Quality Standard Could Pose Challenges
In the more than 200 air quality modeling analyses that ALL4 meteorologists have conducted, demonstrating compliance with the annual nitrogen dioxide (NO2) National Ambient Air Quality Standard (NAAQS) of 53 parts per billion (ppbv) has rarely been an issue. The relative ease for demonstrating compliance with the annual NO2 NAAQS is due to two (2) factors. First, the NAAQS for NO2 is an annual ...
By All4 Inc.
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Remote sensing of particulate pollution from space: Have we reached the promised land?
This paper follows presentation and publication of the Hoff and Christopher 2009 Critical Review and represents an integration of discussants’ views of their paper. The discussants’ comments are organized beginning with a note on the history of satellite sensing, followed with a brief discussion of the strengths and weaknesses of satellite observations relative to air quality management needs. ...
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Dispersion modeling— New downwash calculations change the playing field
For many people, the terms “stack height” and “dispersion model” do not ring a bell. Others grapple with these terms as they can be challenging factors in the process of obtaining an air construction permit. Have you ever constructed a stack at a specific height due to EPA guidelines and regulations surrounding Good Engineering Practice (GEP) as it relates to air ...
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Modeling for NAAQS Part 1: How to select the appropriate output for NO2
The U.S. National Ambient Air Quality Standards (NAAQS) for 1-hour SO2, 1-hour NO2, and 24-hour PM2.5 use a very particular format. It is very important for all modelers (both within and outside of the U.S.) to understand how AERMOD handles this. In particular, U.S. users need to be familiar with the special tools available to help them analyze these results, and non-U.S. modelers (or anyone ...
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Modeling Tip: Disabling Onsite and Offsite Receptors in BREEZE AERMOD
The type of modeling analysis you are conducting will determine if you are interested in the highest offsite or onsite pollutant concentrations. For example, if you are modeling to show compliance with the U.S. EPA National Ambient Air Quality Standards (NAAQS), you will be interested in the concentrations that occur offsite, whereas if you want to show compliance with OSHA regulations you will ...
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Facility reduces process downtime – Case Study
A facilities subcontractor for Boeing required meters to monitor the make-up air mass flow rate into a painting facility. The make-up fans ensure compliance with OSHA and Boeing air quality standards by reducing contamination and airborne particles that result from over-spray. The Boeing standard dictates a minimum airflow of 125 SFPM to the paint booths. Should the airflow drop below this ...
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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, applicants will no longer need to gain U.S. EPA approval ...
By All4 Inc.
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