We dig into the latest industry insights so you don’t have to. Browse recent articles to catch up on regulatory news, technical updates, and best practices that matter.
Refinery at night
Managing PFAS at Oil & Gas Sites
Learn more about how PFAS travels through the environment, the latest regulations, how to handle PFAS sampling orders, and AFFF management considerations.
Mitch Olson, PhD, PE
newsitem-01 (1)
Stream Quantification Tool — A Quantitative Approach to Stream Mitigation
A spreadsheet-based calculator, called the Stream Quantification Tool (SQT), is steadily being adopted for CWA 404 permitting projects to quantify stream impacts and inform mitigation measures.
Jill Pehl, PE
EPA Proposes Severe Ozone Nonattainment Status for the Denver Metro/North Front Range Region – What Does it Mean for You?
The EPA proposed to move the Denver Metro/North Front Range ozone nonattainment area from "serious" to "severe."
Jay Christopher
Chrysotile Asbestos
EPA Exercises Reformed TSCA to Initiate Asbestos Ban
On April 5, 2022, EPA proposed a new ban on asbestos. The proposal represents the first time EPA has exercised the regulatory framework established in 2016 under the Reformed TSCA.
Andrew Pawlisz, DABT
Exploring Carbon Reduction through CCUS Projects & Class VI UIC Wells
Exploring carbon capture, utilization, and storage (CCUS) projects, Class VI Underground Injection Control (UIC) carbon sequestration well permitting, and tax credits incentivizing CO2 reduction.
Brad Pekas, PE, PG
NSZD: A Passive Remediation Powerhouse for LNAPL
NSZD can serve as a powerhouse in subsurface LNAPL removal, often exceeding LNAPL mass removal rates of engineered systems such as pumping, air sparging, or vapor extraction.
Lloyd E. Dunlap, P.G.
Ben McAlexander
Proposed Appendix K: Camera Operator Training Requirements and Performance Audits
We explore the training and audit requirements introduced in Appendix K of EPA’s proposed New Source Performance Standards and Emissions Guidelines.
Jeremy Sell, PE
Women reviewing binder of papers
EPA PFAS Strategic Roadmap Updates: A Strong Start to 2022
Since introducing its PFAS Strategic Roadmap in October 2021, EPA has made several regulatory advancements regarding PFAS.
Andrew Pawlisz, DABT
OGI survey
Proposed Appendix K: OGI Survey Procedures
We dive into the optical gas imaging (OGI) survey protocol introduced in EPA's proposed changes to New Source Performance Standards (NSPS).
Jeremy Sell, PE
Methane OOOOb
EPA's Proposed Methane Standards: What Should You Be Doing Now to Get Ready?
NSPS OOOOb requirements are expected in late 2022 or early 2023. Trihydro outlines six ways affected facilities can prepare for new methane standards.
Jay Christopher


Receive the latest technical and regulatory updates in your inbox.

When choosing an environmental and engineering partner, you expect proven expertise, consistent quality and a high overall value. Nothing less will do. You can count on these qualities from Trihydro. We welcome you to contact us or visit one of our locations.

Headquarters 307-745-7474  |  Locations