Langan Engineering & Environmental Services, LLC
Parsippany-Troy Hills, NJ
- UEI
- DMSEFJNCRJ57
- CAGE
- 3E7Y0
- Primary NAICS
- 541330 Engineering Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
- SAM.gov registration date
- Physical address
- 300 Kimball Dr FL 4, Parsippany, NJ 07054, USA
- Website
- langan.com
- Founded
- 1970
- Employees
- 1K-5K
- Estimated annual revenue
- $500M-$1B
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- Civil Engineering
- SIC code
- 87 Engineering & Management Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| CA flap SR89(1) truckee river bridge groundwater expert support for construction claim | Federal Highway Administration | $0 | |
| Expert witness services | Civil Division | $19,250 | |
| Expert witness services | Civil Division | $26,346 | |
| Expert services (LH) | Naval Supply Systems Command | $44,197 | |
| Gate-repairs/rehab riis park boardwalk and water system | Northeast Region | $328,722 |
About Langan Engineering & Environmental Services, LLC
Langan Engineering & Environmental Services, LLC is a premier engineering and environmental consulting firm established in 2003 that provides integrated solutions across transportation, environmental, and infrastructure projects for federal agencies. Based in Parsippany-Troy Hills, New Jersey, the firm operates as a for-profit limited liability company with substantial experience delivering specialized technical consultation and expert services to support federal project delivery and dispute resolution. Langan brings established capabilities in engineering and environmental expertise that address complex infrastructure challenges, construction claims, and litigation support requirements across multiple federal agencies and program areas.
Langan's federal contract work demonstrates a diversified portfolio focused on expert witness services and specialized technical consultation. Most recently, the firm received a $257,000 firm fixed-price purchase order from the Federal Highway Administration in November 2025 to provide groundwater expert support for a construction claim related to the California FLAP SR89(1) Truckee River Bridge project, with performance scheduled through December 2027 in Lakewood, Colorado. The company has also maintained an ongoing relationship with the U.S. Department of Justice Civil Division, receiving multiple purchase orders for expert witness services totaling over $45,000 across contracts awarded in February 2024 and November 2025, with work performed on a time and materials basis from its New Jersey headquarters. Beyond prime contract awards, Langan has served as a subcontractor on federal projects including environmental assessment work for Regional Innovation Technology Hubs under The MITRE Corporation as prime contractor for the Economic Development Administration, project development services under Machado and Silvetti Associates, Inc., and aging infrastructure assessment work under Assurance Technology Corp. All of Langan's identified federal contract awards have been made without set-aside designations, reflecting the firm's competitive positioning in providing specialized services across civilian federal agencies.
Quick answers
What is Langan Engineering & Environmental Services, LLC's UEI?
Langan Engineering & Environmental Services, LLC's Unique Entity ID (UEI) in SAM.gov is DMSEFJNCRJ57.
What is Langan Engineering & Environmental Services, LLC's CAGE code?
Langan Engineering & Environmental Services, LLC's CAGE code is 3E7Y0.
What is Langan Engineering & Environmental Services, LLC's primary NAICS code?
Langan Engineering & Environmental Services, LLC's primary NAICS code is 541330 (Engineering Services).
Where is Langan Engineering & Environmental Services, LLC located?
Langan Engineering & Environmental Services, LLC's physical address in SAM.gov is 300 Kimball Dr FL 4, Parsippany, NJ 07054, USA.
Is Langan Engineering & Environmental Services, LLC registered in SAM.gov?
Yes. Langan Engineering & Environmental Services, LLC's SAM.gov registration is active through March 4, 2027.
What is Langan Engineering & Environmental Services, LLC's most recent federal award?
Langan Engineering & Environmental Services, LLC's most recent federal contract award is CA flap SR89(1) truckee river bridge groundwater expert support for construction claim (6982AF26P000002), from Federal Highway Administration, on November 19, 2025.
On GovTribe
See Langan Engineering & Environmental Services, LLC's full federal record
- Federal contract awards
- IDV awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
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