CleanAir Blog

Using High-Definition Infrared Optical Gas Imaging for N2O Leak Detection

Sep 5, 2018

Infrared cameras are typically perceived as tools for hydrocarbon detection. However, with the proper equipment, they can be used for a variety of chemical detection projects. For example, CleanAir recently received a request from a whipped cream[…]

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The ACE Rule: When is an Emission Increase an Emission Increase?

Aug 21, 2018

The Trump EPA's new Affordable Clean Energy (ACE) rule proposal announced today aims to replace the Obama EPA's Clean Power Plan (CPP) for limiting CO2 emissions from coal-fired power plants. The new proposal finds that the Best System of[…]

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New Flare Consent Decree: WRB Refining/Phillips 66

Aug 20, 2018

On August 10, 2018, the US Department of Justice lodged a proposed consent decree with the United States District Court for the Southern District of Illinois in the lawsuit entitled United States and Illinois v. WRB Refining LP, et al., Civil[…]

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infoBits: Sampling Hydrogen Chloride (HCl) from Stacks

Jul 25, 2018

1. Hydrogen Chloride (HCl) is an acid gas classified as a Hazardous Air Pollutant (HAP), and is identified as harmful to the environment and human health. HCl is highly corrosive and can damage metal structures over time. It is also highly water[…]

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Sorbent Tube Method Approved for HCl Measurement on Coal-fired EGUs

Jul 17, 2018

The U.S. EPA recently “upgraded” Other Test Method 40 (OTM-40) to an approved alternative method (ALT-129) for coal-fired Electric Generating Units (EGUs) subject to 40 CFR Part 63 Subpart UUUUU, otherwise known as the Mercury and Air Toxics[…]

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What's Up with MATS? The Rule 28 Years in the Making and Still Cookin'

Jul 17, 2018

EPA’s long-suffering Mercury and Air Toxics Standards (MATS) rule regulates emissions of mercury and other air toxics from coal-fired power plants. The rule has its origins 28 years ago with the passage of the Clean Air Act of 1990. The Act[…]

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infoBits: Condensable Particulate Sampling Bias

May 4, 2018
  1. Particulate is defined by the method used to measure it. Unlike chemically distinct emissions like carbon monoxide or nitrogen oxide, “particulate” can be composed of many different distinct compounds. Some of these compounds may be volatile[…]

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Generating Reliable Gas Turbine Performance Data

Apr 27, 2018

There are many reasons to conduct a gas turbine performance test, including determining compliance with acceptance guarantees, establishing benchmarks for performance monitoring and power purchase agreements, and determining performance parameter[…]

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EPA Responses to Refinery Flare AMELs Hit Federal Register

Apr 25, 2018

EPA today published their response to Alternative Means of Emission Limitation (AMEL) requests from four refineries and a chemical plant. These are: ExxonMobil (Baytown), Marathon (GBR and Garyville), Chalmette (Chalmette), and the chemical plant[…]

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What to Know About Conducting a Performance Specification 11 (PS-11) Test

Mar 22, 2018

Performance Specification 11 (PS-11) establishes the initial installation and performance procedures required for evaluating the acceptability of a particulate matter (PM) continuous emission monitoring system (CEMS). 

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Clean Air Engineering Is Now ISO 17025 Accredited

Mar 22, 2018

CleanAir is now accredited to ISO 17025, the international standard for competence of testing laboratories. This is in addition to two other accreditations we hold: ASTM D7036 (Standard Practice for Competence of Air Emission Testing Bodies) and[…]

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EPA Proposes Refinery Sector Rule Amendments - Part 2

Mar 21, 2018

This is Part 2 of my blog post on EPA's proposed amendments to the Refinery Sector Rule (RSR). Part 1 covered changes to Subpart CC (MACT 1). Part 2 covers changes to Subpart UUU (MACT 2) and Subpart Ja.

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EPA Proposes Refinery Sector Rule Amendments - Part 1

Mar 20, 2018

On Monday, March 19, 2018, US EPA issued proposed amendments to the Refinery Sector Rule (RSR). These amendments are based on three petitions of reconsideration filed with the agency -- two of these were joint submissions by the American[…]

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EPA Finalizes New Enclosed Flare AP-42 Emission Factors

Mar 20, 2018

On February 5, 2018, the EPA finalized its review of the existing VOC emissions factor for flares at natural gas production sites.

EPA evaluated test data available for flares at natural gas production sites, data from testing conducted by[…]

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Shell Flare Consent Decree Lodged

Feb 16, 2018

On February 12, 2018, the Department of Justice lodged a proposed consent decree with the United States District Court for the Eastern District of Louisiana. The alleged violations involve flares used at a chemical plant owned and operated by Shell[…]

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