| | CHESAPEAKE WORKOVER AND WELL CONTROL EXPERT | ENGINEERING SERVICES, L.P. | $0 | BUREAU OF THE FISCAL SERVICE | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | — | 541330Engineering Services | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Apr 28, 2020 | Apr 29, 2020 | Oct 28, 2021 |
| | DRILLING CONSULTANT IGF::CL::IGF | ENGINEERING SERVICES, L.P. | $29,603 | BUREAU OF THE FISCAL SERVICE | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | — | 541330Engineering Services | B529SPECIAL STUDIES/ANALYSIS- SCIENTIFIC DATA | May 8, 2018 | May 4, 2018 | Sep 8, 2019 |
| | OBLIGATE FY18 FUND FOR DRILLING CONSULTANT TO SUPPORT PATTERSON-UTI ENERGY INVESTIGATION | ENGINEERING SERVICES, L.P. | $25,005 | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | — | 541330Engineering Services | B504SPECIAL STUDIES/ANALYSIS- CHEMICAL/BIOLOGICAL | Jan 25, 2018 | Jan 25, 2018 | Jun 30, 2018 |
| | IGF::CT::IGF | ENGINEERING SERVICES, L.P. | $4,600 | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | — | 541330Engineering Services | B504SPECIAL STUDIES/ANALYSIS- CHEMICAL/BIOLOGICAL | Jan 19, 2017 | Jan 19, 2017 | Mar 28, 2017 |
| | IGF::CL::IGF | ENGINEERING SERVICES, L.P. | $42,144 | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | — | 541330Engineering Services | B543SPECIAL STUDIES/ANALYSIS- ENERGY | Apr 1, 2015 | Apr 1, 2015 | Sep 30, 2016 |
| | EXPERT WITNESS - TECHNOLOGY/METALLURGICAL ENGINEERING - METALLURGICAL ENGINEERING - IGF::CT::IGF | ENGINEERING SERVICES, L.P. | $67,000 | OFFICES, BOARDS AND DIVISIONS | OFFICES, BOARDS AND DIVISIONS | — | 541199All Other Legal Services | R424SUPPORT- PROFESSIONAL: EXPERT WITNESS | Dec 1, 2014 | Dec 1, 2014 | Jun 30, 2020 |
| | TO OBTAIN TECHNICAL EXPERT SERVICE IN TRANSOCEAN SUBPOENA ENFORCEMENT LITIGATION. | ENGINEERING SERVICES, L.P. | $1,950 | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | — | 541330Engineering Services | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Apr 5, 2012 | Apr 5, 2012 | Oct 8, 2013 |
| | BP DEEPWATER. BLOWOUT PREVENTER (BOP) FAILURE ANALYSIS | ENGINEERING SERVICES, L.P. | $709,204 | BUREAU OF THE FISCAL SERVICE | CHEMICAL SAFETY AND HAZARD INVESTIGATION BOARD | — | 541330Engineering Services | R425SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | Sep 29, 2010 | Sep 30, 2010 | Sep 30, 2012 |