Delivering critical infrastructure assessment, environmental services, and specialized consulting to government and private sector clients across North America for over three decades.
HIG provides a full spectrum of engineering, environmental, and consulting services tailored to the specific needs of each engagement.
Comprehensive structural, mechanical, and systems evaluation for aging or mission-critical facilities. Condition reporting, risk ranking, and remediation planning.
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Phase I and II environmental site assessments, contamination investigation, remedial design, and regulatory compliance support. ASTM and EPA standards.
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Full-service project delivery for federal, state, and municipal clients. GSA Schedule holder. NAICS codes 541330, 541620, 541690. Security clearance eligible staff.
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Discreet assessment, risk evaluation, and field investigation services for matters requiring specialized expertise and operational security. Authorized clients only.
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Founded in 1987 by Wallace Halverson, HIG began as a regional environmental consulting practice serving Pacific Northwest industrial clients. Over three decades, the firm expanded its service lines and geographic reach while maintaining the discretion and quality that define the Halverson reputation.
Today, HIG operates across every major sector of the U.S. economy, with particular depth in defense-adjacent infrastructure, energy systems, and complex government engagements requiring both technical rigor and operational sensitivity.
HIG brings sector-specific expertise to every engagement, drawing on a deep bench of technical and regulatory specialists across six major industries.
Facility assessments, secure operations support, and clearance-eligible consulting for defense installations and contractors.
Pipeline integrity, substation assessments, grid resilience planning, and environmental compliance for energy infrastructure owners.
Bridge inspection, transit facility assessment, freight corridor evaluation, and DOT compliance support.
Brownfield redevelopment, CERCLA remediation, stormwater management, and ecological impact analysis.
GSA, DoD, VA, and EPA task order vehicles. Experienced with IDIQ structures, performance-based contracts, and complex multi-site programs.
Pre-acquisition due diligence, facility condition assessments, industrial hygiene, and property condition reporting for private clients.
Ready to discuss your project?
Our team is available to evaluate your needs and determine how HIG's capabilities can be applied to your specific challenge. Inquiries handled with full discretion.
The Special Projects Division operates under a separate intake process. Referrals only. If you have been provided a contractor portal link, please access it through the Employee Portal.