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What Stack Test Data Can Tell You Beyond Compliance Key Takeaways Stack test data can support more than a comparison against an emission limit. It can help facility teams evaluate equipment performance, control efficiency and emissions assumptions. Operating conditions provide essential context. Load, fuel, process rate, control settings and other conditions influence how test resultsRead more

One Engine, Multiple Rules: How JJJJ, ZZZZ, Air Permits and Testing Fit Together Key Takeaways Engine compliance begins with classification. Fuel, ignition type, horsepower, construction date, operating purpose and the facility’s hazardous air pollutant source classification can all affect applicable requirements. Subpart JJJJ and Subpart ZZZZ address different regulatory programs, and some engine categories useRead more

Texas Pauses Data Center Permits Pending Grid and Water Review Key Takeaways On September 21, Governor Greg Abbott directed TCEQ to pause issuing permits related to data center projects until ERCOT completes its review. His letter also calls on other state agencies to hold related regulatory approvals while information is gathered. The permit directive buildsRead more

Key Highlights EPA finalized the repeal of three major elements of its 2024 Carbon Pollution Standards: the emission guidelines for existing fossil fuel-fired steam generating units, carbon capture requirements for coal units undergoing a large modification, and Phase 2 carbon capture requirements for new base load combustion turbines. The 2024 efficiency-based Phase 1 standards forRead more

Particulate Matter Stack Testing: How EPA Methods 1 Through 5 Work Together Particulate matter stack testing is a coordinated measurement process. Before a testing team can determine how much particulate matter is leaving a stationary source, it must identify a representative sampling location, measure the movement and composition of the exhaust gas, account for moistureRead more

Data centers are no longer just large electricity consumers. With emergency generators and an expanding fleet of behind-the-meter gas turbines and reciprocating engines, their air emissions can rival those of a small industrial facility. That means an air permit — and a clear answer to who holds it — is a core piece of dataRead more

Frequently Asked Questions About EmVision™ Mobile Emissions Monitoring Some emissions questions require more than a scheduled survey, while the duration or location does not justify a permanent installation. EmVision™ Mobile brings continuous optical methane detection and quantification to the site for a defined campaign, investigation or operating period, then moves to the next priority location.Read more

A Practical Guide for Developers, Operators, and Consultants Regulatory UpdateAs of publication on October 5th 2026, Texas has paused new data center permits pending a review of its large-load interconnection process. Federal & State Regulatory Framework | Compliance Pathways | Best Practices Here in Texas, “everything is bigger” speaks to more than geography. It reflectsRead more

Frequently Asked Questions About Stack Emissions Testing Stack emissions testing gives facility teams measured data they can use to demonstrate compliance, evaluate equipment performance and make informed operating decisions. Because every source, permit and test program is different, successful testing begins well before a crew arrives on site. The following answers cover common questions aboutRead more

On July 20, 2026, the European Commission recommended that EU Member States suspend certain penalties for importer noncompliance during 2027, 2028 and 2029. It also issued guidance that allows certification and trace-and-claim solutions to help demonstrate compliance across complex supply chains. Key Takeaways: The European Commission recommends that EU Member States refrain from applying certainRead more