CleanAir Blog

Excess Emission CEMS vs Compliance CEMS in Subpart Db

Nov 7, 2018

For some reason, NOx CEMS in Subpart Db seems to be coming up a lot lately in my work. I have recently had several conversations with clients and regulatory agencies regarding how NOx CEMS are treated in Subpart Db. And there seems to be some[…]

More

WPCA Fall 2018 Technical Journal

Nov 6, 2018

The Fall 2018 WPCA Technical Journal is now available. The link below features the following articles:

Wet Flue Gas Desulfurization System Enhancements to Operate at Low LoadBy Terence Ake and Suzette Puski, Babcock Power Environmental, Inc.

More

Mercury Sorbent Trap User's Group Meeting

Oct 26, 2018

Are you looking to improve data availability for your mercury sorbent trap system? Or are you interested in how to prepare for a sorbent trap RATA? These and other topics will be discussed at CleanAir's Third Annual Sorbent Trap User's Group[…]

More

Btu per SQUARE FOOT? What the heck is EPA’s Flare Dilution Factor?

Oct 12, 2018

OK… This is a long one.

More

Danny Landry: Drones for Inspection and Air Quality Monitoring

Sep 27, 2018

Danny Landry is a pioneering entrepreneur in the field of drone (or UAV) use for industrial inspection and air quality monitoring. In this episode of Hot Air, I talk with Danny about various UAV applications in air quality monitoring, optical gas[…]

More

Jim Guenthoer: The Successful Stack Test

Sep 27, 2018

In these inaugural episodes of CleanAir's podcast series Hot Air, I sit down with Jim Guenthoer to talk about the elements necessary for a successful stack test. Jim brings his 40+ years of stack testing experience to the table and provides lots[…]

More

It’s Time to Rethink Flare Velocity Limits

Sep 26, 2018

US EPA’s flare velocity limits were originally issued in 1986. Since then, they have found their way into flare regulations around the world. They were developed following a series of EPA sponsored tests conducted in the 1980’s that examined how[…]

More

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[…]

More

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[…]

More

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[…]

More

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[…]

More

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[…]

More

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[…]

More

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[…]

More

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[…]

More