Oil and Gas | Assessment and Remediation
California Refinery Groundwater Collection System
Trihydro revamped an extensive California refinery groundwater collection system that was first commissioned in the 1980s.…
Assessment and Remediation
Providing end-to-end environmental assessment and remediation expertise, from strategy and design through implementation and site closure, across complex sites and regulatory frameworks.
Projects
Oil and Gas | Assessment and Remediation
Petroleum Contamination Site Characterization and Remediation
Trihydro’s ongoing efforts at a Montana site with complex petroleum contamination have significantly reduced contaminant…
Industrial and Chemical | Assessment and Remediation
Former Solvent Recycling Facility Environmental Remediation Plan
Trihydro is implementing a comprehensive environmental remediation plan and supporting site closure at a former Kentucky…
Industrial and Chemical | Assessment and Remediation
In Situ Bioremediation System Design and Remediation Program
Trihydro reduced tetrachloroethene (PCE) concentrations by up to 99% at a Resource Conservation and Recovery Act (RCRA) site…
Industrial and Chemical | Assessment and Remediation
Polychlorinated Biphenyl Contaminated Soil Remediation
When a train partially derailed and impacted a Central Ohio Transit Authority (COTA) maintenance facility, Trihydro…
Industrial and Chemical | Assessment and Remediation
Revitalizing the Old Yellowstone District Using Brownfield Funding
The City of Casper (City) received a US Environmental Protection Agency (EPA) Brownfields Assessment Grant to redevelop the…
Industrial and Chemical | Assessment and Remediation
Environmental Support for Power Plant Closure Activities
Trihydro provided environmental support for the characterization, remediation, and closure of a natural gas and fuel oil…
Industrial and Chemical | Assessment and Remediation
Remedy Evaluation and Implementation for Brownfield Funding
The Town of Dubois contracted Trihydro to provide technical assistance for remedy evaluation and implementation for…
Industrial and Chemical | Assessment and Remediation
Environmental Sequence Stratigraphy
Using Environmental Sequence Stratigraphy (ESS), Trihydro created conceptual site models (CSMs) for three Air Force…
Industrial and Chemical | Assessment and Remediation
In Situ Bioremediation Operations and Maintenance
Trihydro developed and installed an in situ bioremediation system to treat various constituents and contain plume migration…
Oil and Gas | Assessment and Remediation
Remediation System Design & Implementation
Trihydro was contracted to design and implement a remediation strategy at a natural gas compressor station site in Colorado.…
Industrial and Chemical | Assessment and Remediation
Groundwater Monitoring Program for Trichloroethylene Impacts
Trihydro developed and continues to implement an interim long-term groundwater monitoring program to identify final…
Delve Articles
Industrial and Chemical | Assessment and Remediation
EPA Targets Microplastics and Pharmaceuticals as Priority Drinking Water Threat Groups in the Draft CCL 6
On April 2, 2026, the U.S. Environmental Protection Agency (EPA) announced a major update to its drinking water priorities…
Mining | Assessment and Remediation
Using Environmental Tracers to Improve Groundwater Models
Environmental tracers are naturally occurring constituents in groundwater that can be analyzed to help reveal flow and…
Oil and Gas | Assessment and Remediation
EPA Aims to Scale Back PFAS Reporting Requirements
The U.S. Environmental Protection Agency (EPA) is proposing to scale back reporting requirements for per- and…
Industrial and Chemical | Assessment and Remediation
EPA Aims to Extend Trichloroethylene (TCE) Compliance Deadlines
This article has been updated to add that EPA further postponed the effective date of TSCA section 6(g) exemption…
Oil and Gas | Assessment and Remediation
Outlook on PFAS Under the New EPA
While the new administration continues to focus on PFAS, the pace of related rulemaking has slowed compared to 2024. We…
Oil and Gas | Assessment and Remediation
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…
Industrial and Chemical | Assessment and Remediation
EPA’s PFAS in Biosolids Draft Risk Assessment Targets Land Application Hazards
We explore EPA’s draft risk assessment of PFAS in biosolids and its possible regulatory impacts.
Oil and Gas | Assessment and Remediation
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…
Oil and Gas | Assessment and Remediation
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…
Oil and Gas | Assessment and Remediation
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…
Industrial and Chemical | Assessment and Remediation
Toxics Release Inventory PFAS Categories Expand Reporting Complexity
In early October, the EPA proposed a new rule for the Toxics Release Inventory (TRI) that could change the way we currently…
Industrial and Chemical | Assessment and Remediation
EPA Delays TSCA PFAS Reporting Rule Again
In October 2023, EPA promulgated the final PFAS reporting and recordkeeping rule from the TSCA Section 8(a)(7) amendment by…
Trainings
Oil and Gas | Assessment and Remediation
Workshop: 6th Annual PFAS, Microplastics, and Emerging Contaminants Workshop
This two-day complimentary workshop brings together subject matter experts from industry, academia, law, and regulatory…
Oil and Gas | Assessment and Remediation
Training: PFAS Sampling and Analysis for Defensible Data Generation
Trihydro’s Per- and Polyfluoroalkyl Substances (PFAS) Sampling and Analysis Training for Defensible Data Generation is…
Oil and Gas | Assessment and Remediation
Training: PFAS Data Management and Assessment to Drive Risk-Based Decisions
Trihydro’s Per- and Polyfluoroalkyl Substances (PFAS) PFAS Data Management and Assessment to Drive Risk-Based Decisions…
Oil and Gas | Assessment and Remediation
Training: PFAS Regulatory Updates and Due Diligence Requirements
Trihydro’s Understanding Per- and Polyfluoroalkyl Substances (PFAS) Regulatory Updates and Due Diligence Requirements…
Industrial and Chemical | Assessment and Remediation
Training: Solid Waste Assessment and Remediation
Trihydro’s Solid Waste Assessment and Remediation training is tailored for owners of solid waste facilities and sites with…
Industrial and Chemical | Assessment and Remediation
Training: Corporate Sustainability Planning and Assessment
Trihydro’s Corporate Sustainability Planning and Assessment training is designed for companies interested in how…
Oil and Gas | Assessment and Remediation
Training: Remediation Lifecycle Strategies for Risk Reduction and Compliance
Trihydro’s Remediation Lifecycle training is designed to educate teams about the processes involved in remediation. Led by…
Oil and Gas | Assessment and Remediation
Training: Remediation System Optimization
Trihydro’s Remediation System Optimization training provides stakeholders with the knowledge and tools to improve the…
Oil and Gas | Assessment and Remediation
Training: Conceptual Site Model (CSM) for Advanced Environmental Site Management
Trihydro’s Conceptual Site Model (CSM) training program is specifically designed for environmental professionals…