Ridgemont Equity Partners Acquires ENTACT From J.F. Lehman & Company

By Amit Chowdhry ● Aug 13, 2026

Ridgemont Equity Partners has acquired ENTACT, an environmental remediation and geotechnical infrastructure services company, from J.F. Lehman & Company, positioning the business for its next phase of expansion across environmental and infrastructure-related markets.

Financial terms of the transaction were not disclosed. Brown Gibbons Lang & Company served as financial advisor to ENTACT in connection with the transaction.

Chicago-based ENTACT provides a broad range of environmental remediation, geotechnical services, and design-build engineering capabilities to public and private-sector customers throughout North America. Its services are designed to support customers facing technically complex environmental, infrastructure, and site-development challenges that frequently require specialized engineering expertise and significant project execution capabilities.

The company has more than three decades of operating experience and has completed over 3,000 projects during that period. ENTACT serves customers across a diverse range of end markets, including power, chemical, industrial, energy, public sector, and consulting and engineering markets.

ENTACT’s experience across these industries allows the company to address projects involving environmental remediation, site preparation, geotechnical construction, and other infrastructure-related requirements. Many of the projects it undertakes are complex or mission-critical in nature, creating demand for contractors capable of combining engineering expertise with direct field execution.

A key differentiator for ENTACT is its ability to provide multiple capabilities through a single operating platform. The company maintains in-house engineering resources alongside extensive self-perform construction capabilities, enabling it to retain greater control over project execution, scheduling, quality, and coordination.

Its national operating footprint also allows ENTACT to support customers across multiple geographic markets while deploying specialized personnel and equipment to projects where they are needed. These capabilities have helped the company build relationships with customers that require experienced partners for complicated environmental and infrastructure assignments.

The acquisition by Ridgemont Equity Partners is expected to support ENTACT’s continued expansion through a combination of organic growth initiatives and potential acquisitions. Additional investment could allow the company to expand its geographic reach, broaden its service capabilities, increase operating capacity, and pursue complementary businesses that strengthen the overall platform.

ENTACT is positioned to benefit from several longer-term trends affecting its markets. Environmental regulations continue to create requirements for remediation and compliance-related work, while infrastructure investment is generating additional demand for engineering, construction, and site-development services.

At the same time, industrial, energy, power, and public-sector customers continue to manage aging infrastructure, redevelopment projects, environmental liabilities, and increasingly complex construction requirements. ENTACT’s combination of engineering expertise and self-perform capabilities positions the company to participate across many of these areas.

Ridgemont’s investment also provides ENTACT with a financial partner capable of supporting a more aggressive growth strategy while maintaining the company’s existing operating platform. The partnership is expected to focus on expanding ENTACT’s capabilities and market presence while continuing to serve customers requiring specialized environmental remediation and geotechnical infrastructure solutions.

For J.F. Lehman & Company, the deal represents the exit of an investment in a specialized environmental and infrastructure services platform that has developed a substantial North American project base. Under Ridgemont’s ownership, ENTACT will now pursue its next stage of growth as demand for environmental remediation, infrastructure upgrades, and technically demanding engineering and construction services continues to develop across its core markets.

Exit mobile version