Longenecker & Associates

What Longenecker & Associates does

Longenecker & Associates, operating as 'L&A: A Geosyntec Company' since its December 2025 acquisition by Geosyntec Consultants, is a U.S. federal contractor delivering technical and management support services to the Department of Energy and National Nuclear Security Administration complex. The firm organizes its work around five core capabilities—Mission Assurance, Project Delivery, Field Operations Support, Regulatory Assurance, and Business Strategy and Execution—covering safety, quality, formality of operations, contractor assurance, EVMS, startup/commissioning, NEPA analysis, permitting, and strategic communications. Its underlying technology is human expertise rather than a productized platform: domain knowledge, regulatory know-how, and field operations experience embedded in cleared professional staff.

The company operates from five U.S. offices (Boca Raton HQ; Oak Ridge, TN; Los Alamos, NM; Aiken, SC; Albuquerque, NM) and supports the DOE defense nuclear and cleanup mission at approximately 20 sites, with named engagements spanning Los Alamos National Laboratory, Sandia National Laboratories, Savannah River Site, Oak Ridge Reservation, Hanford, Pantex Plant, Fermilab, and Jefferson Lab. Two SBA mentor-protégé joint ventures extend service scope: the JVC-LA Project Management Alliance (with J. Vollbrecht Consulting) and the Mission Assurance Alliance (with Paschal Solutions, Inc.).

The revenue model is exclusively federal government professional services delivered through GSA Schedule, DOE/NNSA direct contracts, NNSA Supply Chain Management Center Agreement, DOE/NNSA Technical and Engineering Support BPA, and DOE/NNSA Enterprise Construction Management Services vehicles. Work is won by embedding into M&O and cleanup contractor teams (Triad, NTESS, Battelle Savannah River Alliance, PanTeXas Deterrence, Fermi Forward Discovery Group, H2C, SURATech, UCOR, N3B) and through direct DOE oversight channels. Pricing is quote-based and not publicly disclosed; the firm is privately held with no disclosed revenue, headcount, or cap table.

Name

Longenecker & Associates

Legal name

Longenecker & Associates, Inc.

Website

https://la-inc.com

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

101–250 employees

Short description

Longenecker & Associates is a U.S. federal contractor delivering mission assurance, project delivery, field operations, regulatory assurance, and business strategy services to the DOE and NNSA complex across approximately 20 sites, now operating as L&A: A Geosyntec Company following its December 2025 acquisition.

Ownership category

akta.pro rank

Product category

Federal Professional Services

NAICS

Management Consulting Services (54161), Other Scientific and Technical Consulting Services (54169), Management, Scientific, and Technical Consulting Services (5416), Environmental Consulting Services (54162)

SIC

Services-Management Consulting Services (8742), Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700), Services-Facilities Support Management Services (8744)

akta.pro primary industry

Performance Improvement & Operational Excellence (INPO/WANO, Human Performance, KPIs) (EUAKABAK)

akta.pro secondary industries

Reactor Operations & Control Room (Operations, Procedures, Outage Ops) (EUAKABAA), Nuclear Plant O&M Services (EUAEAGAC), Technical Cooperation, Capacity Building & Policy Advisory Programs (BPADABAO), Security, Safety & Fire/Life Safety Management (BPABAAAE)

Keywords

• Federal professional services
• Mission assurance consulting
• Nuclear regulatory support
• Environmental remediation services
• DOE NNSA contracting

Headquarters

HQ city

Las Vegas

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Federal Government Professional Services: L&A provides technical and management support services to the U.S. Department of Energy complex through various contracting vehicles including GSA Schedule and other federal agreements. Services span mission assurance, project delivery, regulatory support, and field operations.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Longenecker & Associates provides technical and management consulting services to the U.S. Department of Energy and National Nuclear Security Administration complex. The company delivers five core service capabilities—Mission Assurance, Project Delivery, Field Operations Support, Regulatory Assurance, and Business Strategy and Execution—covering mission-related safety, regulatory compliance, project controls, startup and commissioning, environmental remediation, and stakeholder engagement across 20 DOE sites.

Product overview

L&A: A Geosyntec Company provides technical and management consulting services to the U.S. Department of Energy (DOE) and its contractors, specializing in national security, environmental remediation, and nuclear development projects. The company operates as a unified service offering organized around five core capabilities: Mission Assurance, Project Delivery, Field Operations Support, Regulatory Assurance, and Business Strategy and Execution. These services are delivered both directly and through two joint ventures—JVC-LA Project Management Alliance (combining L&A's mission and regulatory assurance with JVC's project management expertise) and Mission Assurance Alliance (partnering with Paschal Solutions for nuclear safety and engineering support). Following acquisition by Geosyntec Consultants in December 2025, L&A continues to support small modular reactor developers, uranium enrichment initiatives, and the DOE defense nuclear mission at 20 sites across the DOE enterprise.

Differentiator

Problem solved

Functional benefit

Products and services

• Mission Assurance Provides mission assurance services including safety, quality assurance, formality of operations, contractor assurance, and management and technical assessments utilizing a three-fold approach to improve mission performance for U.S. DOE and NNSA clients.
• Project Delivery One-stop shop for support services for major capital asset or general plant projects, including startup and commissioning, project analysis and recovery, facility management, EVMS and project controls, and Critical Decision package development for DOE clients.
• Field Operations Support Supports complex and high-hazard operations across the full cycle of nuclear operations, providing conduct of operations support, waste management and disposition support, operational readiness, field ES&H management, training and qualification support, and incident response and recovery.
• Regulatory Assurance Experts including former federal and state regulators with extensive knowledge of the DOE complex provide regulatory strategy development, NEPA analysis, facilitation and conflict resolution, and permitting support; partner in Savannah River National Laboratory's Regulatory Center of Excellence.
• Business Strategy and Execution Assists businesses in implementing winning strategies in national security and environmental remediation markets, providing support in business operations, strategic communications and media relations, international consulting, and lean management.
• JVC-LA Project Management Alliance Joint venture of J. Vollbrecht Consulting (JVC), a woman- and service-disabled-veteran-owned small business, and L&A. Combines L&A's core capabilities in mission and regulatory assurance, project delivery, and field operations support with JVC's expertise in project management, data analysis, portfolio management, risk management, alternatives analysis, and technical writing.
• Mission Assurance Alliance, LLC (MAA) Joint venture of Paschal Solutions, Inc. (PSI) and L&A bringing together two premier small businesses providing Nuclear Safety, Engineering, Regulatory, and Management Support for commercial and government clients.

Named customers9 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Eight partnerships are on record, tiered core, strategic and minor.

• J. Vollbrecht Consulting (JVC)coreStrategic or Co-development PartnerL&A has entered into a mentor-protégé agreement with JVC through the U.S. Small Business Administration Mentor-Protégé Program. JVC-LA Project Management Alliance combines L&A's core capabilities in mission and regulatory assurance, project delivery and field operations support with JVC's expertise in project management, data analysis and portfolio management, risk management, alternatives analysis and technical writing. JVC is a woman- and service-disabled-veteran-owned small business.
• Paschal Solutions, Inc. (PSI)coreStrategic or Co-development PartnerL&A has entered into a mentor-protégé agreement with PSI through the U.S. Small Business Administration Mentor-Protégé Program. Mission Assurance Alliance, LLC (MAA) brings together two premier small businesses providing Nuclear Safety, Engineering, Regulatory, and Management Support for commercial and government clients.
• Savannah River National LaboratorystrategicTechnology or IntegrationL&A is a partner in the Savannah River National Laboratory's Regulatory Center of Excellence, providing regulatory strategy, NEPA analysis, facilitation and conflict resolution, and permitting support services.
• SURATech, LLCstrategicStrategic or Co-development PartnerL&A joined the SURATech team as part of the new management contract for Thomas Jefferson National Accelerator Laboratory (Jefferson Lab), contributing expertise in mission assurance, regulatory assurance, project delivery, engineering, and business operations.
• Energy Facility Contractors Group (EFCOG)coreGTM or Marketing PartnerL&A serves as the support contractor for EFCOG and helps organize important events including congressional briefings and the annual National Cleanup Workshop. EFCOG is one of the principal organizers of the House Cleanup Caucus briefing on DOE isotope mission.
• Fermi Forward Discovery Group, LLCminorOthersL&A is part of the new Fermilab management team as a partner through the Fermi Forward Discovery Group.
• PanTeXas Deterrence, LLCminorOthersL&A Joint Venture is part of the new Pantex Plant management and operating team.
• Geosyntec ConsultantscoreStrategic or Co-development PartnerAcquired by Geosyntec Consultants in December 2025. L&A: A Geosyntec Company combines deep technical and scientific expertise with mission-enhancing skills to reduce technical, regulatory and execution risks. The acquisition expands federal capabilities in nuclear energy, national security, and advanced reactor deployment.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• AECOM: AECOM is one of the largest global engineering and federal services firms with a substantial U.S. DOE/NNSA practice covering environmental remediation, nuclear facility operations, and federal infrastructure. It competes with L&A on DOE enterprise and site-level contracts but at vastly larger scale across many federal agencies.
• Jacobs Solutions: Jacobs is a major federal engineering and nuclear services prime contractor, including DOE cleanup and national security programs. It overlaps with L&A in nuclear operations, environmental remediation, and mission assurance, but operates at enterprise scale across many federal and commercial clients.
• Leidos: Leidos is a large federal scientific and engineering services contractor with significant DOE/NNSA, NNSA tritium operations, and national security work. It competes with L&A on technical, regulatory, and mission assurance services but at much larger scale and broader portfolio.
• Booz Allen Hamilton: Booz Allen is a major federal management and technology consulting firm with DOE/nuclear and national security practices. It overlaps with L&A's regulatory assurance, mission assurance, and strategic advisory work, but serves a much broader set of federal clients.
• Tetra Tech: Tetra Tech is a leading federal environmental and water consulting firm with major DOE environmental remediation work. It overlaps with L&A's project delivery and field operations support at cleanup sites but at substantially larger scale and broader environmental focus.
• Battelle Memorial Institute: Battelle is a nonprofit R&D and federal services organization that manages multiple DOE national laboratories (including via Battelle Savannah River Alliance) and competes with L&A as a site-level M&O prime and federal contractor.
• ICF International: ICF is a federal management and scientific consulting firm with significant DOE, environmental, and energy programs. It overlaps with L&A's regulatory, mission assurance, and energy strategy consulting but at much larger scale across many federal agencies.

Direct peers

• Navarro Research and Engineering: Navarro is a DOE-focused technical and management services contractor providing environmental remediation, nuclear operations, and engineering support across the DOE complex. It directly competes with L&A for site-level and enterprise DOE work, with similar federal-only revenue concentration.
• Strategic Resources International (SRI): SRI is a federal technical services contractor with a DOE/NNSA focus on nuclear safety, regulatory affairs, and environmental compliance — directly comparable to L&A's regulatory assurance and mission assurance capabilities.

Emerging players

• WSP USA (formerly Wood Environment & Infrastructure): WSP's federal practice (built in part from acquisitions of Wood E&I and Golder) provides environmental and engineering services to DOE and other federal clients, competing with L&A on environmental remediation and nuclear-related technical work.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Longenecker & Associates