Environmental Due Diligence, Transactions, and Facility Lifecycle Support

From Phase I ESAs and M&A due diligence to site remediation and decommissioning, manage environmental risk across your entire facility lifecycle.

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Environmental liabilities can affect transactions, redevelopment plans, and operational decisions. BSI helps organizations evaluate risks and make informed decisions at every stage.

Whether acquiring a facility, planning an expansion, preparing for divestiture, or redeveloping a site, organizations need visibility into environmental conditions and potential liabilities. BSI provides environmental, health, and safety (EHS) due diligence, transaction support, site characterization, PFAS risk evaluation, and lifecycle planning services that help clients make informed decisions, reduce uncertainty, and maintain regulatory compliance.

Our multidisciplinary team goes beyond traditional Phase I and Phase II Environmental Site Assessments (ESAs), tailoring assessments to support specific business objectives and transaction goals. Through an enhanced due diligence approach, we evaluate business risks alongside environmental, operational, health and safety, and compliance considerations that may impact site operations, acquisitions, remediation strategies, or redevelopment plans.

By integrating technical expertise, regulatory insight, and practical business considerations, BSI helps organizations protect investments, reduce transaction risk, and support facility success throughout its lifecycle.

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Go beyond Phase I ESAs to identify environmental and EHS liabilities.
Perform Phase II investigations and remediation of soil, groundwater, and vapor risks.
Support M&A transactions with compliance audits and liability cost forecasting.
Characterize contamination to support redevelopment and Brownfield incentives.
Guide facility startups through EHS permitting, planning, and risk management.
Evaluate PFAS risks and regulatory obligations before transactions or redevelopment.
Integrate due diligence findings into long-term compliance and site planning.

FAQs

Find answers to the most frequently asked questions about Environmental Due Diligence

Environmental due diligence evaluates environmental compliance, operational risks, and historical liabilities associated with a commercial property or business asset. Conducted prior to acquisitions, mergers, financing, restructuring, or redevelopment, it helps buyers, lenders, investors, and risk management professionals quantify environmental exposure. The process identifies recognized environmental conditions (RECs), historical contamination, permit transfer requirements, and potential remediation obligations. Effective due diligence is more than a Phase I ESA and helps protect capital, inform price negotiations, prevent unexpected post-transaction compliance liabilities, and establish a framework for future environmental operations.
A Phase I ESA is a non-intrusive historical and visual investigation of a property to identify Recognized Environmental Conditions (RECs). Performed under ASTM E1527 standards, it includes reviewing historical land records, regulatory databases, aerial photos, and environmental files, alongside a site inspection and stakeholder interviews. Phase I ESAs establish AAI (All Appropriate Inquiries) protection under CERCLA, helping purchasers evaluate contamination liability before completing real estate transactions. Although a Phase I ESA is non-intrusive, additional tasks may be customized to the transaction to address considerations outside ASTM scope, including asbestos, mold, and regulatory compliance screening.

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A Phase II ESA is required when a Phase I ESA identifies RECs or potential concerns that warrant additional investigation. A Phase II ESA can be intrusive or non-intrusive, but typically involves collecting and analyzing environmental media—such as soil, groundwater, surface water, sediments, soil vapor, or indoor air—to confirm whether hazardous substances or petroleum products are present. Results delineate the nature and extent of contamination (if present), to identify health, environmental, and/or business operational risks. The Phase II ESA process helps to inform remediation planning, adjust property valuation, and support deal structuring and liability protections.
While a Phase II ESA simply confirms the presence or absence of contamination, site characterization defines the complete scope and behavior of the release. It delineates the lateral and vertical boundary of impacted soil or groundwater, identifies exposure pathways and receptors, and constructs a conceptual site model. This detailed evidence base allows EHS teams to negotiate realistic cleanup standards with regulators, evaluate remedial options, and establish accurate long-term financial reserves.
Environmental due diligence identifies operational non-compliance, legacy contamination, and permitting gaps before transaction completion. The scope of due diligence should be tailored to meet the defined business objectives of the transaction and scope may vary significantly depending upon terms of the deal, the intended use of the assets post-transaction, and the nature of the party performing the due diligence (e.g., buyers, sellers, insurers, equity partners, etc.). Due diligence evaluating both property impacts and operational risks helps quantify capital expenditure needs, prioritize activities, and structure appropriate deal terms, indemnities, or escrow allocations while accelerating post-merger risk mitigation.
PFAS evaluations require reviewing historical manufacturing, supply chain inputs, specialized chemical processes, and firefighting foam (AFFF) usage. Where credible risk exists, targeted PFAS sampling is integrated into Phase II investigations using specialized anti-contamination sampling protocols. For facility exits or closures, we assess PFAS obligations against evolving federal and state cleanup levels, helping clients mitigate long-term reporting liability and regulatory exposure. As a minimum, a screening level assessment related to emerging contaminants like PFAS should be integrated into due diligent practices.

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A standard single-site Phase I ESA takes two to three weeks, though expedited timelines can be accommodated during fast-moving deals. If Phase II testing is required, sampling, laboratory analysis, and reporting typically add two to four weeks or longer depending upon scope. Portfolio transactions are often executed concurrently using phased risk triage to deliver interim findings quickly, allowing deal teams to proceed without waiting for final documentation. When additional time is needed, environmental activities are commonly coordinated with legal stakeholders who can structure transactions with risk mitigation measures such as escrow accounts or defined responsibilities under contingent scenarios.
BSI assists startup and expansion projects by establishing local, state, and federal regulatory roadmaps early in design, and ideally much early during initial site selection. We secure required air, wastewater, and hazardous waste permits, establish EHS compliance management frameworks, and perform pre-operational safety audits. Integrating EHS requirements early prevents costly regulatory delays, ensures day-one compliance, and builds scalable operational continuity.
Facility decommissioning requires a structured process that integrates operational phase-out with regulatory compliance requirements. Common elements include risk assessment to identify inventory, decontamination and investigation needs; regulatory notifications and permit termination activities; hazardous material and waste characterization with proper disposal or recycling; and post-decontamination confirmatory sampling. For demolition projects, pre-demolition surveys identify regulated building materials such as asbestos, lead, mercury, and PCBs. If legacy contamination exists, remediation responsibilities may be managed through the closure program or separate regulatory mechanisms based on site-specific requirements.
Managing environmental risks from acquisition through operation to closure provides cost predictability, regulatory protection, and operational continuity. Addressing compliance proactively reduces remediation costs, prevents enforcement actions, simplifies facility transactions, and preserves long-term asset value across your corporate real estate portfolio.