What to Watch in the First Six Months of HON Rule Fenceline Monitoring
For most SOCMI facilities, HON Rule fenceline monitoring begins on July 15, 2026. That timeline can make the early phase…
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Delve Articles
HON Rule Fenceline Monitoring is a Data Governance Challenge Not Just a Monitoring Exercise
With the U.S. Environmental Protection Agency’s (EPA’s) final Hazardous Organic National Emission Standards for…
EPA Finalizes Deadlines for Emissions Reduction Rules
The EPA issued an interim final action extending compliance deadlines under NSPS OOOOb, NSPS OOOOc, and the Super Emitter…
EPA Proposes Cuts to GHG Reporting Requirements
On September 12, 2025, the U.S. Environmental Protection Agency (EPA) issued a proposed rule to permanently eliminate most…
How Oil and Gas Companies Should Prepare for Methane Tax Uncertainty
The discontinuation of the WEC has created a void in understanding how methane taxes will be applied. We discuss proactive…
Colorado Regulation 7: Understanding Colorado’s Midstream Fuel Combustion Equipment Regulations
A milestone reporting deadline is coming up in June for Colorado midstream operators that addresses fuel combustion…
EPA Redefines “Pneumatic Controllers” as “Process Controllers”
EPA has redefined “pneumatic controllers,” now “process controllers,” changing more than just the name. We explore…
NSPS OOOOb & OOOOc Compliance for Gas Well Liquids Unloading
The final rule for NSPS OOOOb and OOOOc aims to reduce flared or vented gas during liquids unloading from gas wells. We…
Subpart W: Crankcase Venting
Engine crankcase venting GHG emissions must be reported for the first time under Subpart W of EPA’s GHGRP. We discuss…
New Subpart W Source Type: Drilling Mud Degassing
Since May, drilling mud degassing operators must calculate and report GHG emissions under EPA’s GHGRP Subpart W. Operators…
California’s SCAQMD 1178 Rule and Effective Data Capture at Storage Tank Facilities
California’s SCAQMD Rule 1178 was amended to further reduce VOC emissions from storage tanks at petroleum facilities.…
NSPS OOOOb: Centrifugal & Reciprocating Compressor Compliance at Oil and Gas Facilities
In this article, we review EPA’s NSPS OOOOb for centrifugal and reciprocating compressors used at onshore natural gas…
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