Arm Group LLC

Hummelstown, PA

UEI
L9DUJ8SWDFM5
CAGE
9TMH5
Primary NAICS
541330 Engineering Services
SAM.gov registration
Active through

Company facts

Self-certified in SAM.gov
  • For Profit Organization
  • Subchapter S Corporation
Entity structure
Corporate Entity (Not Tax Exempt)
Corporate family
SAM.gov registration date
Physical address
1129 W Governor Rd, Hummelstown, PA 17036, USA
Website
armgroup.net
Employees
51-250
Estimated annual revenue
$10M-$50M
Industry
  1. Industrials
  2. Capital Goods
  3. Construction & Engineering
  4. Civil Engineering
SIC code
87 Engineering & Management Services

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .

Contract subawards

Prime contractor Prime award Amount Awarded
Fluor Marine Propulsion, LLC MANAGEMENT AND OPERATION OF THE NAVAL NUCLEAR LABORATORY AND NAVAL NUCLEAR PROPULSION PROGRAM SUPPORT Emergency Generatory 89233018CNR000004 $153,230
Stantec Consulting Services Inc. KEYSTONE DAM STILLING BASIN GEOTECHNICAL INVESTIGATIONS Geophysical borehole logging on 15 boreholes and deviation survey, for Keystone Dam Stilling Basin… W912BV25FA050 $140,220
Stantec Consulting Services Inc. GUAJATACA DAM GEOTECH PHASE III INVESTIGATION. Geophysical Logging of rock core bordings and Structural analysis of optical and acoustical logs for Guajataca… W9123725F0005 $232,148
General Dynamics OTS (Wilkes Barre), LLC 155MM capacity expansion project for M795 and M1128 to 65K/month borings for testing W519TC23F0171 $33,600
Stantec Consulting Services Inc. GEOTECHNICAL A/E SERVICES BASE Geophysical mapping and surveying at UEHP Barracks Ft. Campbell, KY W912QR24F0156 $41,400

Latest 5 listed here. See the rest on GovTribe.

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GRL & Associates UEI HAZBQZRJQFM9 Solon, OH 541380 Testing Laboratories and Services
Civil & Environmental Consultants Inc. UEI YK9VCGW917K6 PA 541330 Engineering Services

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About the company

Written by GovTribe AI ·

Arm Group LLC operates exclusively as a federal subcontractor, delivering geophysical engineering, geotechnical investigations, and nuclear propulsion support services to the Department of the Army, the Department of Energy, the Environmental Protection Agency, and the Army Corps of Engineers through primes including Stantec Consulting Services Inc., Fluor Marine Propulsion LLC, and General Dynamics OTS. The vendor is a for-profit Subchapter S corporation headquartered in Hummelstown, Pennsylvania, and serves as a subsidiary of Arm Group, Inc., a parent organization that also owns Arm Enertech Associates LLC.

Arm Group LLC operates in a narrow and specialized capability space anchored in geophysical services. Recent sub-award work includes geophysical borehole logging and deviation surveys for the Keystone Dam Stilling Basin in Oklahoma (Stantec prime, October 2025); geophysical logging and structural analysis of optical and acoustical core logs for Guajataca Dam in Puerto Rico (Stantec, December 2024); geotechnical and geophysical mapping and surveying at Fort Campbell, Kentucky (Stantec, June 2024); and nuclear laboratory and naval nuclear propulsion program support under Fluor Marine Propulsion (January 2026). Additional work includes borings for testing and capacity expansion in munitions production (General Dynamics OTS, August 2024) and geophysics support on a Superfund site remediation project (EA Engineering, Science, and Technology, Inc., October 2022). The vendor's award portfolio reflects engineering services and R&D roles that are distributed across Army Corps of Engineers water-infrastructure programs, Army ammunition production, Department of Energy nuclear programs, and EPA environmental remediation.

The vendor's recent footprint is small and non-concentrated. Six total sub-awards over the past four years (two in 2024, one each in 2022, 2025, and 2026) carry a combined obligated value of $633 thousand, distributed across six distinct customer agencies with no single agency anchoring the awards. Arm Group LLC places work under four Army Corps of Engineers indefinite-delivery contracts (two sub-orders under W9123720D0010) and the EPA Remedial Acquisition Framework for Design and Engineering Services. The vendor's sub-award strategy routes work through established engineering primes — Stantec accounts for three of the six awards — rather than pursuing prime positions. There is no indication of SBA set-aside certifications, vehicle seats, or prime-contract eligibility in the source. The parent Arm Group, Inc. maintains the same federal posture, with all observed activity routed through subcontractor roles under Army Corps of Engineers and Department of Defense primes.

Quick answers

Is Arm Group LLC registered in SAM.gov?

Yes. Arm Group LLC's SAM.gov registration is active through March 17, 2027.

On GovTribe

See Arm Group LLC's full federal record

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