EPA Issues Updates to Final PFAS MCLs
The EPA has issued important updates to final Maximum Contaminant Levels (MCLs) for six per- and polyfluoroalkyl substances…
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Delve Articles
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…
EPA Adds Nine PFAS to 2025 TRI Reporting
EPA continues to add PFAS to TRI. Find out which new PFAS have been added and what EPA’s reporting requirements will look…
EPA Drafts First-Ever Human Health Water Quality Criteria for PFAS
On December 19, EPA released draft human health-based water quality criteria for three per- and polyfluoroalkyl substances…
EPA Finalizes Restrictions on Trichloroethylene (TCE), Perchloroethylene (PCE), and Carbon Tetrachloride (CTC)
In 2024, EPA announced sweeping restrictions on trichloroethylene (TCE), perchloroethylene/tetrachloroethylene (PCE), and…
Class II Injection Wells: Unlocking the Hidden Value of CO2 in Oil & Gas Production
Recent advances in carbon capture and sequestration (CCS) have dramatically changed the financial impacts, both positive and…
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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