Oil drums
Advances in 1,4-Dioxane Remediation
Advances in 1,4-dioxane groundwater remediation continue to make headway.
    • Delve
    • News
  • TENORM Delve
    Decision on Montana TENORM Limit Delayed
    Montana DEQ proposed new regulations for managing the disposal of TENORM...
    • Waste
    • Radioactive
    • TENORM
    • Department of Environmental Quality
    • DEQ
    • Montana
    • Delve
    • 2019
  • 172 PFAS Compounds Included for 2020 TRI Reporting Year
    Starting with reporting year 2020, companies must track and compile data on 172 PFAS compounds to comply with Toxics Release Inventory (TRI) reporting requirements.
    • PFOA
    • PFAS
    • TRI Reporting
    • TRI List
    • Safety Data Sheet
    • SDS
  • EPA to Change Types of Construction That Can Begin Before Receiving an Air Permit
    EPA changes interpretation of "begin actual construction" under the New Source Review permitting program.
    • Air Permitting
    • New Source Review
    • Clean Air Act
    • EPA
  • EPA Finalizes TSCA CDR Amendment and Extends Reporting Deadline
    • TSCA Inventory
    • Regulatory Compliance and Reporting
    • CDR Reporting
    • TSCA
  • Lighten Resource Pressure by Collecting Defensible Data
    Producing quality and defensible data decreases the likelihood of having to spend time and money either redoing a sampling event or recollecting data.
    • Data Defensibility
    • Data Quality
    • Data Management
    • Environmental data management
    • DQOs
    • Data Quality Objectives
  • Preparing for 2020 CDR Reporting
    Watch these information videos for key tips to prepare for the 2020 TSCA CDR reporting cycle.
    Vapor intrusion
    California Releases Long-Awaited Vapor Intrusion Guidance
    California recently released its long-awaited Draft Supplemental Guidance for Vapor Intrusion (VI) for public comment.
    • EPA
    • California
    • Vapor Intrusion
    • California Water Boards
    • Regulatory Compliance
    • DTSC
  • Wetlands in sunshine
    New Regulations Narrow the Reach of the Clean Water Act
    The new Navigable Waters Protection Rule narrows federal jurisdiction under the CWA.
    • Regulatory Compliance
    • CWA
    • Navigable Waters Protection Rule
    • Wetlands
    • Streams
    • EPA
  • Proposed Changes to the National Environmental Policy Act
    The White House has announced proposed fundamental changes to the National Environmental Policy Act.
    • NEPA
    • environmental policy
    • EIS
    • Federal
  • Firefighters use AFFF containing PFAS
    3 Considerations When Replacing Firefighting Foams
    Aqueous film-forming foams (AFFFs) have been used for firefighting for decades, but they contain per- and poly-fluoroalkyl substances (PFAS), which have shown potential for harm to human health and the environment.
    • fluorine-free foams
    • AFFF
    • firefighting foams
    • PFAS
  • Firemen extinguish chemical fire at industrial facility
    Why Your RMP Needs to Know About Recent Rule Changes and CSB’s New Proposed Ruling
    The final rule is expected to be published to the Federal Register the week of February 10, 2020, and will become effective 30 days after publication.
    • Risk management plan
    • EPA
    • Accidental release
    • Chemical release
    • CSB
    • RMP
    • Emergency response
  • mine reclamation site in wyoming
    6 Tips for Achieving Final Reclamation Bond Release
    Several factors need to align for mine reclamation success, and attaining final closure often takes many years — or even decades. Here are some tips to streamline the process.
    • Mine Closure
    • Reclamation Bond
    • Reclamation
    • Bond Release
    • Mining
    • stakeholder engagement
  • Are you ready for IMO 2020? Sulphur oxides emissions regulation hits January 1
    • International Maritime Organization
    • Refineries
    • SOx emissions
    • SOx
    • Sulphur oxides
    • Marine fuels market
    • IMO 2020
  • Landfill Delve
    Top 5 Compliance Tips for Small Landfills
    With limited resources, owners and operators of small MSWLFs often face challenges balancing operational costs with compliance needs...
    • Solid Waste
    • landfills
  • Microplastics
    How Big is the Microplastics Problem?
    • Wastewater
    • Water
    • Microbeads
    • Microfibers
    • Microplastics
  • Chemical Data Reporting Errors Could Result in Fines Under TSCA
    The importance of timely and accurate chemical data reporting (CDR) under the Toxic Substances Control Act (TSCA) was highlighted last week...
    • Manufacturing
    • Data
    • Chemical Data Reporting
    • TSCA
    • environmental compliance
    • EPA
  • newsitem-01
    The EPA, Residual Risk and Technology Review (RTR) & Ethylene Production Facilities (EMACT)
    On October 9 and 23, 2019, the U.S. Environmental Protection Agency (EPA) published the proposed National Emission Standards for Hazardous Air Pollutants (NESHAP)...
    • Ethylene
    • RTR
    • environmental compliance
    • EMACT
    • GMACT
    • flares
    • ethylene RTR
  • newsitem-01 (1)
    Stream Quantification Tool — A Quantitative Approach to Stream Mitigation
    As part of the permitting process, permit applicants must identify and implement measures to avoid or minimize impacts to aquatic resources.
    • 404 Permitting
    • Stream Restoration
    • Army Corps of Engineers
    • Stream Quantification Tool
    • Oil & gas
    • Mining
    • Clean Water Act
  • UW_Institution_Logo
    University of Wyoming "Trihydro’s dedication to the communities in which they have offices is second to none. We look forward to our continued relationship with Trihydro and the opportunity to present students with quality job opportunities from a top notch company."

    Conrad Chavez, Manager, Multicultural Affairs

    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