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Environmental Research Group, LLC (ERG) is an 8(a) certified, service-disabled veteran-owned (SDVO), economically disadvantaged woman-owned (EDWO) small business (SB).

DOT MBE/DBE certified

ERG is a small business (SB) under the following NAICS Codes:


Primary: 541620








DUNS: 141876594

CAGE Code: 1P0W9






erg management


Gina Foringer has built her career around her dedication to the military and environmental work. Straight out of college with a B.S. in Mathematics from James Madison University, Gina served as an U.S. Army transportation officer. She later earned a M.B.A. from Old Dominion University. She served in Operation Restore Hope, earning a Purple Heart and a Meritorious Service Medal when her vehicle ran over a command-detonated landmine in Somalia. After leaving the Army, Gina was introduced to on-site contracting, managing the Norfolk District, U.S. Army Corps of Engineers’ Military Support Program, which provided environmental planning support to military agencies worldwide. In that role, she facilitated contract actions and program performance with more than 30 environmental firms for approximately 300 on-site positions and countless off-site projects totaling $60 million annually. In 1999, Gina joined an environmental firm to create its small-business professional services group. Under her management, it grew to approximately $15 million with 125 on-site positions at approximately 25 military locations. On the last day of 2012, she purchased ERG, forwarding her vision to provide unparalleled service to her customers and the environment.


Under Gina’s careful management, ERG entered the U.S. Small Business Administration’s 8(a) Business Development Program, became Service-Disabled Veteran Owned (SDVO) and Economically-Disadvantaged Woman-Owned (EDWO). Under her ownership, ERG is also registered disadvantaged business enterprise/minority business enterprise in Maryland, Virginia, Kentucky, Tennessee, and Florida. Focused on mission success, organizational structures and employee care, Gina has cultivated an extensive network of government and contractor personnel, a thorough knowledge of military infrastructure, and a comprehensive understanding of contract operations. Theresa Zano McMillan, Gina Foringer and Heather McNabnay


ERG is not just woman-owned but also women-operated, with three operations managers who are committed to providing employees and customers with immediate care for both management and administrative issues. Each operations manager embodies ERG’s core values: trust, expertise, and compassion, along with an attitude of joy, flexibility, and gratitude.



Theresa Zano-McMillan earned her B.S. in Civil Engineering from Old Dominion University, and then began volunteering at Norfolk District, US Army Corps of Engineers and was hired 1994. Growing the program from $17 million to $44 million in just four years, Theresa managed Professional Services Program projects, using 14 defense contractors to support Base Realignment and Closure (BRAC,) Installation Restoration, environmental compliance, Operations and Maintenance (O&M,) and administrative requirements at 17 defense facilities nation-wide, which totaled more than $200 million in contract value. In 2005 she left the Corps to became a contractor, where she honed her already solid skill set. She has been a member of the ERG team since 2013, mentoring employees and satisfying customers at multiple US Army Corps of Engineers districts, Mission Installation Contracting Commands, and other federal agencies.


Heather McNabnay, PMP, earned a B.S. in Environmental Science and M.S. in Environmental Engineering from Hillsdale College and Wayne State University, respectively. She began her career in industrial hygiene and then worked National Environmental Policy Act (NEPA) actions for the U.S. Army Tank-automotive and Armaments Command (TACOM) as an on-site contractor. She left in 2004 to manage on-site work for the U.S. Army, the U.S. Air Force, and the National Park Service. With ERG since 2016, she manages people and projects on 15 Army, Air Force, Navy, and Army Reserves installations and bases across the country. Heather continually expands her knowledge and experience in environmental planning, project management, natural and cultural resources, ecological restoration, and regulatory compliance support.


Robyn Kreimborg earned a B.A. in journalism and a M.A. in geography with a focus on environmental policy from University of Georgia and University of Iowa, respectively. As a consultant, she provided environmental regulatory compliance and management support for both federal and commercial clients. Her specialties include pollution prevention program initiatives, the development and implementation of environmental management systems, strategic sustainability planning, and comprehensive multimedia environmental auditing. With training in ISO 14001: Environmental Management System RAB-Certified Lead Auditor, U.S. Green Building Council Leadership in Energy and Environmental Design (LEED) Green Associate, and USACE Construction Quality Management, she is an important asset to the rest of the ERG operations management team.