Railroad Tanker
EPA Finalizes Changes to OLD MACT
To reduce hazardous air pollutants, the EPA has introduced changes to the Organic Liquids Distribution Maximum Achievable Control Technology – or OLD MACT.
    • Hazardous Air Pollutants
    • CEDRI
    • RTR
    • Subpart EEEE
    • 40 CFR Part 63
    • Maximum Achievable Control Technology
    • OLD MACT
    • Organic Liquids Distribution
  • Geomorphic reclamation at former mining site
    Applying Geomorphic Reclamation to Mine Sites and Disturbed Lands
    Geomorphic reclamation helps mimic pre-disturbance conditions, achieve plant diversity, and minimize long-term maintenance and repair.
    • Geomorphic grading
    • Mining Reclamation
    • Natural Regrade
    • Mining
    • Geomorphic reclamation
  • two people groundwater sampling
    EPA Requests Feedback on Superfund Groundwater Remediation Principles
    EPA is accepting written remarks on six Superfund groundwater remediation principles until July 30, 2020.
    • Superfund
    • CERCLA
    • EPA
  • Oil drums stacked on top of one another
    California Hazardous Waste Permitting – The Effects of Senate Bill SB-673 Continue to Unfold
    New hazardous waste regulations in California aim to reduce inspection violations and improve public health and environmental protections.
    • CalEEMod
    • CalEnviroScreen 3.0
    • DTSC
    • Department of Toxic Substances Control
    • California hazardous waste permitting
    • Hazardous Waste
    • CA SB-673
  • Reed Meriwether Trihydro
    Trihydro Welcomes Reed Meriwether, Senior Engineer!
    Trihydro continues to grow our water and wastewater capabilities in Texas with the addition of Reed Meriwether, P.E., Senior Engineer.
    Pipeline along beach in California
    The Potential Impacts of Vacating Nationwide Permit 12
    On April 15, 2020, the US District Court for the District of Montana vacated Nationwide Permit 12 (NWP 12) for all utility line activities.
    LeakTracker Pro Webinar and Live Demo
    Watch On-Demand: LeakTracker Pro Webinar & Software Demo
    Watch this video for an overview of LeakTracker Pro, a software solution that provides efficient workflow, record-keeping, and reporting for OGI surveys and leak data.
    Oceanview in hawaii
    Supreme Court Decision Includes Groundwater Under Clean Water Act
    On April 23, 2020, the Supreme Court decided in a 6-to-3 ruling that, in some circumstances, the Clean Water Act applies to pollutants that reach the sea or other navigable waterways via groundwater.
    PFAS Data Webinar Recording
    Webinar Recording: PFAS Data Analysis, Interpretation, and Risk Assessment
    Watch this webinar recording for an in-depth look PFAS data analysis, interpretation, and risk assessment.
    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
  • 5 Key TSCA Updates
    5 Key TSCA Updates
    There has been a lot of activity regarding the Toxic Substances Control Act (TSCA) over the last several months.
    Water wastewater system in Texas
    Utility Risk and Resilience Planning Under the American Water Infrastructure Act
    If your organization previously conducted a vulnerability assessment and ERP under the Bioterrorism Act, it’s a good starting place for assembling the more comprehensive RRA required by AWIA.
    • EPA
    • Emergency Response Plan
    • Risk and Resilience Assessment
    • Bioterrorism Act
    • AWIA
  • 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
  • PFAS Site Characterization and Remediation Recording
    Webinar Recording: PFAS Site Characterization and Remediation
    Watch this webinar recording for an in-depth look at PFAS site type considerations, sampling, and fate and transport with regard to contaminated site investigation and cleanup.
    Refinery on a sunny day
    Using EPA’s Self-Disclosure Program as a Response to COVID-19
    What is the EPA’s “self-disclosure policy” and how can companies use it during the COVID-19 pandemic?
    • Self-Disclosure
    • Audit Policy
    • EPA
    • Coronavirus
    • COVID-19
  • hazardous waste barrels in storage
    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
  • LDAR sampling at industrial facility
    Coronavirus Roundup: How is EPA Addressing Enforcement for Permit Deadlines and Other Matters?
    • Coronavirus
    • COVID-19
    • EPA
  • Trihydro COVID-19 Response
    We are truly experiencing a unique situation that our communities, industry, nation and world have not experienced before.
    • COVID-19
  • 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.

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