| | SERES ENGINEERING & SERVICES LLC | MULTIPLE AWARD ENVIRONMENTAL SERVICES (MAES) MULTIPLE AWARD TASK ORDER CONTRACT (MATOC) | IDC | $500,000,000 | DEPT OF THE ARMY | DEPT OF THE ARMY | SBP | 562910Remediation Services | F999OTHER ENVIRONMENTAL SERVICES | Aug 28, 2025 | Aug 28, 2025 | Aug 27, 2030 |
| | SERES ENGINEERING & SERVICES LLC | SOUTH CAROLINA CONSTRUCTION MULTIPLE AWARD TASK ORDER CONTRACT (MATOC) | IDC | $15,000,000 | FOREST SERVICE | FOREST SERVICE | 8A | 236220Commercial and Institutional Building Construction | Z2AAREPAIR OR ALTERATION OF OFFICE BUILDINGS | Jan 28, 2022 | Feb 1, 2022 | Jul 17, 2025 |
| | SERES ENGINEERING & SERVICES LLC | ETS TANKS INSPECTION & TESTING IDIQ | IDC | $4,500,000 | DEPT OF THE NAVY | DEPT OF THE NAVY | 8AN | 562910Remediation Services | F999OTHER ENVIRONMENTAL SERVICES | Jul 16, 2021 | Jul 20, 2021 | Jul 19, 2026 |
| | SERES ENGINEERING & SERVICES LLC | ENVIRONMENTAL&ENGINEERING IDIQ | IDC | $21,872,954 | DEPT OF THE AIR FORCE | DEPT OF THE AIR FORCE | 8AN | 541620Environmental Consulting Services | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | May 14, 2020 | May 24, 2020 | — |
| | SERES ENGINEERING & SERVICES LLC | — | IDC | $4,000,000 | DEPT OF THE ARMY | US ARMY CORPS OF ENGINEERS - CIVIL PROGRAM FINANCING ONLY | 8AN | 541620Environmental Consulting Services | C219ARCHITECT AND ENGINEERING- GENERAL: OTHER | Mar 26, 2020 | Mar 26, 2020 | — |
| | SERES ENGINEERING & SERVICES LLC | MEDICAL GAS MAINTENANCE NHB | IDC | $520,596 | DEPT OF THE NAVY | DEPT OF THE NAVY | 8AN | 561210Facilities Support Services | Z1DAMAINTENANCE OF HOSPITALS AND INFIRMARIES | Sep 30, 2019 | Sep 30, 2019 | — |
| | SERES ENGINEERING & SERVICES LLC | UNDERGROUND STORAGE TANKS, ABOVEGROUND STORAGE TANKS ENVIRONMENTAL TECHNICAL SERVERVICES EAST | IDC | $4,000,000 | DEPT OF THE NAVY | DEPT OF THE NAVY | 8AN | 562910Remediation Services | F999OTHER ENVIRONMENTAL SERVICES | May 7, 2019 | May 7, 2019 | May 5, 2024 |
| | SERES ENGINEERING & SERVICES LLC | — | IDC | $4,000,000 | DEPT OF THE ARMY | DEPT OF THE ARMY | 8AN | 562910Remediation Services | F999OTHER ENVIRONMENTAL SERVICES | Aug 23, 2018 | Aug 15, 2018 | Aug 1, 2021 |
| | SERES ENGINEERING & SERVICES LLC | — | FSS | $4,000,000 | FEDERAL ACQUISITION SERVICE | FEDERAL ACQUISITION SERVICE | — | 541330Engineering Services | F999OTHER ENVIRONMENTAL SERVICES | Aug 20, 2018 | Aug 24, 2018 | — |
| | SERES ENGINEERING & SERVICES LLC | — | IDC | $4,000,000 | DEPT OF THE ARMY | DEPT OF THE ARMY | 8AN | 562910Remediation Services | F999OTHER ENVIRONMENTAL SERVICES | Aug 30, 2017 | Sep 1, 2017 | Aug 29, 2020 |
| | SERES ENGINEERING & SERVICES LLC | IGF::OT::IGF, ENVIRONMENTAL CONSULTING SERVICES | IDC | $4,000,000 | DEPT OF THE ARMY | DEPT OF THE ARMY | 8AN | 562910Remediation Services | F999OTHER ENVIRONMENTAL SERVICES | May 17, 2016 | May 13, 2016 | May 16, 2019 |
| | SERES ENGINEERING & SERVICES LLC | — | IDC | $4,000,000 | DEPT OF THE ARMY | DEPT OF THE ARMY | 8AN | 562910Remediation Services | F999OTHER ENVIRONMENTAL SERVICES | Sep 23, 2015 | Sep 23, 2015 | Sep 21, 2018 |
| | SERES ENGINEERING & SERVICES LLC | — | IDC | $3,688,893 | ENVIRONMENTAL PROTECTION AGENCY | ENVIRONMENTAL PROTECTION AGENCY | 8AN | 562211Hazardous Waste Treatment and Disposal | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Mar 31, 2015 | Apr 1, 2015 | Sep 30, 2020 |
| | SERES ENGINEERING & SERVICES LLC | — | IDC | $2,779,561 | DEPT OF THE AIR FORCE | DEPT OF THE AIR FORCE | 8AN | 562910Remediation Services | J091MAINT/REPAIR/REBUILD OF EQUIPMENT- FUELS, LUBRICANTS, OILS, AND WAXES | Sep 5, 2014 | Sep 5, 2014 | Jun 1, 2019 |
| | SERES ENGINEERING & SERVICES LLC | — | IDC | $0 | DEPT OF THE ARMY | DEPT OF THE ARMY | 8AN | 562910Remediation Services | F999OTHER ENVIRONMENTAL SERVICES | May 2, 2014 | May 2, 2014 | — |
| | SERES ENGINEERING & SERVICES LLC | IGF::OT::IGF ENVIRONMENTAL TECHNICAL SERVICES (WEST) | IDC | $4,000,000 | DEPT OF THE NAVY | DEPT OF THE NAVY | 8AN | 562910Remediation Services | Y1PZCONSTRUCTION OF OTHER NON-BUILDING FACILITIES | Apr 15, 2014 | Apr 14, 2014 | — |
| | SERES ENGINEERING & SERVICES LLC | — | FSS | $250,000 | FEDERAL ACQUISITION SERVICE | FEDERAL ACQUISITION SERVICE | — | 541620Environmental Consulting Services | F999OTHER ENVIRONMENTAL SERVICES | Apr 18, 2011 | Apr 25, 2011 | Apr 24, 2016 |