Addressing Vapor Intrusion: The Role of Sub-Slab Depressurization Systems Vapor intrusion is a growing concern in environmental health, specifically in highly developed urban areas where soil gases or contaminated groundwater can migrate into buildings. Vapor intrusion occurs when volatile...

Vapor Intrusion Evaluation for Residential Redevelopment Redeveloping former industrial sites for residential use requires careful evaluation of vapor intrusion risks. There is a risk that volatile organic compounds (VOCs) were released into the subsurface at sites...

SQG Hazardous Waste Generators Re-Notification Deadline Approaching September 1st, 2025 Under the Hazardous Waste Generator Improvements Rule that became effective May 30, 2017, small-quantity generators (SQGs) of hazardous waste were required to re-notify the EPA using Form 8700-12 by September...

Liberty Environmental Secures Air Quality Permit For Coal Mine Methane Greenhouse Gas Abatement In September 2024, Liberty secured an air quality construction permit in Pennsylvania for one of the largest single carbon offset projects in the U.S.  – the installation of an RTO...

Hazardous Waste Generator e-Manifest Registration Requirement Effective January 22, 2025, small and large quantity generators of hazardous waste must register with EPA’s e-Manifest system to obtain signed and dated copies of completed manifests and to submit...

2025 Industrial Environmental Compliance Calendar Our team of environmental compliance experts is pleased to share our Pennsylvania Industrial Environmental Regulatory Compliance Calendar for 2025. This calendar provides due dates for reporting, permit renewals, and fees...