TPS, LLC was founded in April 2025. The experience below reflects the personal past performance of our Founder & Principal, David D. Troxell, PE, PMP, in senior military leadership and corporate program-management roles prior to and leading into the firm's founding, not contracts performed under the TPS name.
Government Sector
- U.S. Navy NAVFACAtlantic, Mid-Atlantic, Pacific, Hawaii, Marianas, Southeast, & Southwest
- U.S. Army Corps of EngineersHuntsville Center; Omaha, Louisville, Kansas City, & Tulsa Districts
- U.S. Air ForceHAF, PACAF, USAFE, ACC, AMC, AFMC, AFIMSC, & AFCEC
- Explosives Safety Boards & AuthoritiesDoD Explosives Safety Board (DDESB) · U.S. Army Technical Center for Explosives Safety (USATCES) · Naval Ordnance Safety & Security Activity (NOSSA)
Previously Worked With
Firms engaged across federal environmental & infrastructure programs
- Jacobs Government Services, Inc.
- AECOM Technical Services, Inc.
- Parsons Government Services, Inc.
- Leidos, Inc. · General Dynamics Corporation
- Battelle Memorial Institute
- Tidewater USA · CAPE Environmental · GEMS
- NAEVA Geophysics · Sea Engineering
- Environmental Chemical Corporation
Private Sector
- AES Hawaii: Keamuku Solar ProjectWaikoloa, HI · commercial munitions and explosives of concern (MEC) support
Additional Firms & Organizations Engaged
- A-Zone Environmental
- Aptim
- Arcadis
- Black Tusk Geophysics
- Cedarville Engineering
- Clear Path UXO
- Conti Federal
- Dawson
- ECS Mid-Atlantic
- Larson Design Group
- Mason & Hanger
- Matrix Design Group
- Merrick & Co.
- MT2
- Northwest Demolition & Dismantling
- PCCI
- Schnabel Engineering
- Sevenson
- Stanley Consultants
- Stantec
- Temsense
- Tetra Tech
- Unitek
- Weston
- White River Technologies
