Legacy Site Management

With over 40 years of experience, Trihydro is a trusted partner in managing legacy industrial, refinery, and mine sites, guiding our clients through every phase of the remediation lifecycle to return these properties to productive use. Historically, industrial facilities were often idled during economic downturns in anticipation of future production. Some never reopened and were dismantled with inconsistent attention to site restoration, material recycling, or salvage. Environmental conditions were often overlooked during shutdowns, prompting the development of modern regulations to guide proper closure and remediation.

Today, there is growing interest in repurposing remediated brownfield sites rather than developing untouched greenfields. By leveraging best practices and key services refined over decades, Trihydro helps clients reduce environmental liabilities and confidently transform legacy sites into compliant, functional assets.

Strategic Legacy Site Planning and Management

Successfully managing complex or legacy sites requires a strategic, iterative framework that adapts to evolving site conditions and project drivers. This approach is especially critical during the initial site assessment stages, when robust data collection and interpretation rapidly refine site understanding and reveal additional data needs.

Progress across a legacy site is rarely uniform, often requiring the division of the site into multiple “Areas of Interest” based on factors such as contaminant distribution, treatment feasibility, or reuse potential. By considering these factors alongside client input, we prioritize and manage site tasks to maximize value, address stakeholder concerns, and ultimately return properties to beneficial use.

Trihydro understands that the key to successfully managing legacy operations liability is to “start with the end in mind.” Because these efforts often span years, it is essential to front-load the early stages by clearly defining project drivers, constraints, and stakeholder expectations. This early clarity supports a focused, fit-for-purpose approach to data collection, interpretation, and remedy selection.

Trihydro Point of Contact

ANDY SMITH

Senior Vice President

Legacy sites often have long operational histories that involve a wide range of stakeholders—regulators, neighbors, community groups, and more—each with their own perspectives and expectations. Finding a workable path forward can require balancing competing interests. Trihydro’s team has deep experience facilitating productive stakeholder discussions while advancing project goals.

Trihydro Point of Contact

ANDY SMITH

Senior Vice President

Conceptual site modeling and risk assessments are critical to informing collaboration and negotiation with stakeholders. These tools help define the nature and extent of site impacts, constituent fate and transport, potential exposure pathways, and cleanup levels tied to future land use. Visualizing how these complex, interdependent factors relate is foundational to remedy selection and supports decisions such as the application of environmental land use covenants.

Trihydro Point of Contact

ANDY SMITH

Senior Vice President

While legacy refinery, mine, and industrial sites share some similarities with conventional remediation projects, they present unique challenges due to their complexity. Long operational histories often result in expansive site footprints and a wider variety of residual contaminants. To address these challenges, Trihydro employs several remedial technologies, including in situ, ex situ, and containment methods.

Legacy site remediation often involves extensive soil removal, which must be carefully planned in alignment with negotiated remedy goals and well-defined excavation limits. We coordinate closely with stakeholders and regulatory agencies to ensure that cleanup actions are effective, practical, and aligned with the site’s end use.

Trihydro Point of Contact

ANDY SMITH

Senior Vice President

Trihydro supports site owners throughout land transactions by utilizing our site institutional knowledge and aligning remedy implementation with future land use plans. We streamline the due diligence process by compiling a complete site document package—including all published reports and custom figures that highlight areas of interest requiring disclosure, such as those subject to land use covenants or deed restrictions. We also assist clients with complex—and sometimes contentious—real estate matters, including lot line adjustments, boundary changes, and dispute resolution.

Trihydro Point of Contact

ANDY SMITH

Senior Vice President

Power Plant

Western United States

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Strategic Legacy Site Planning and Management

Stakeholder Engagement

Conceptual Site Modeling and Risk Assessment

Remediation Design and Coordination

Property Transaction Support