Trihydro Welcomes Alloy Group's Engineering and Consulting Division

Our engineers have substantial experience designing reclamation plans based on geotechnical and geochemical site characterization. Several of our past projects have required drilling and sampling programs. We perform legal, topographic, and construction surveys to support reclamation design and construction. Our design services typically include developing construction plans in AutoCAD format (e.g., Carlson or AutoCAD Civil3D software), detailed construction specifications, and construction cost estimates.

Our comprehensive suite of services encompasses everything needed for successful mine water management. This includes design, operation, maintenance support, and system optimization to ensure peak performance. We also handle effluent sampling and compliance. Finally, our geochemistry and geochemical modeling expertise allows us to make informed decisions throughout the process.

Additionally, we utilize an array of advanced material- and geochemical analysis techniques such as Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectroscopy (EDXS), X-ray diffraction (XRD), and many others, to understand the site material and treatment efficacy.

Using landform grading at sites is a good option when the end-state vision of reclamation is to mimic pre-disturbance conditions, promote plant diversity, and minimize long-term maintenance costs. We have become a leader in applying landform grading techniques that result in geomorphically stable reclamation.

We began using Carlson Natural Regrade in 2006 and have been brought in as technical peers to provide input to other technical teams. Our designers have been active in constructing projects designed with geomorphic grading, and we continue to refine our designs based on this experience to increase constructability and reduce erosion instabilities.

We identify site-specific soil conditions, note slope aspects, perform vegetation surveys, and collect other site characteristics to develop successful soil amendment and revegetation plans tailored to the specific site or area of the site. Our proposed seed mixtures include species adapted to the specific site conditions (physical, chemical, and climatic). Our specialists monitor the success of the vegetative efforts and quantify the results for submittal to appropriate agencies.

We have experience addressing unsuitable materials, including coal fines and gob piles, acidic soils, radioactive soils, and toxic soils. Traditional reclamation methods (e.g., excavation and encapsulation, off-site disposal, and lime treatment) have been applied successfully on previous projects. Similarly, we have been active in the progression from basic soil treatments, conventional fertilizer use, and uniform seed mixes to more site-specific approaches.

Our team often performs groundwater, surface water, stormwater, air, soil, and vegetation permitting, sampling, and reporting to support reclamation. We assist by preparing permit renewals, permit modifications, and permit amendments. Trihydro also prepares and implements National Pollutant Discharge Elimination System (NPDES) and Multi-Sector General Permit (MSGP) permits, including Stormwater Pollution Prevention Plans (SWPPP).

When challenges arise, we work with clients to define options and next steps that follow a schedule to restore compliance. For many clients, we develop site-specific software to maintain regulatory compliance by optimizing data management, storage, and reporting.