Hunt, Guillot & Associates, LLC was founded in Ruston, Louisiana, by a couple of locals with a passion for both engineering and the wood/lumber industry. Since opening its doors in 1997, Trott Hunt, Jay Guillot, and Don Plummer have grown HGA into a multi-discipline engineering, disaster recovery and project management firm with over 800 employees. With an engineering and project management mindset that started in areas susceptible to extreme weather events, we expanded our business and have helped thousands of clients recover from catastrophic events.
HGA is organized into business units based on the services provided: Engineering, Pipeline Services, Disaster Recovery, Program Management, Construction Services, and Staffing. We supply services to private and public clients. Our private sector clients are in the oil & gas, refining, chemicals, pulp/paper, wood products, biomass, manufacturing, and power industries. Our public sector clients include state, county, parish governments in addition to large and small urban and rural units of governments, including emergency management divisions and public works departments.
Hunt, Guillot & Associates, LLC was founded in Ruston, Louisiana, by a couple of locals with a passion for both engineering and the wood/lumber industry. Since opening its doors in 1997, Trott Hunt, Jay Guillot, and Don Plummer have grown HGA into a multi-discipline engineering, disaster recovery and project management firm with over 800 employees. With an engineering and project management mindset that started in areas susceptible to extreme weather events, we expanded our business and have helped thousands of clients recover from catastrophic events.
HGA is organized into business units based on the services provided: Engineering, Integrated Services, Government Services, Owner’s Representative, Construction Services, Advisory Services, and Staffing. We supply services to private and public clients. Our private sector clients are in the oil & gas, refining, chemicals, pulp/paper, wood products, biomass, manufacturing, and power industries. Our public sector clients include state, county, parish governments in addition to large and small urban and rural units of governments, including emergency management divisions and public works departments.
Over the years, HGA has grown from a single trailer to providing services in over 30 states, Canada, China, and Mexico. We now provide services to multi-billion-dollar private and public sector clients. We have achieved our success by never forgetting where we started and treating each client large or small with the same level of professionalism and respect. We are acknowledged as innovative leaders in project management, engineering, and disaster recovery.
HGA is supporting Enbridge with integrated engineering and survey services for the Line 31 extension and new lateral, streamlining coordination and improving efficiency for a critical natural gas infrastructure project in Mississippi.
HGA delivered Front-End Engineering Design (FEED) and EPCM support for a new lithium wellfield, optimizing well pad placement, pipeline routing, and cost estimates to advance Standard Lithium’s commercial-scale development.
HGA provided complete design and engineering services for six battery storage sites, enabling a local power authority to deliver reliable, peak-demand energy storage on schedule.
HGA supported La Plata Electric Association with the rebuild of a 1.25-mile transmission line over steep, rugged terrain using helicopter-assisted construction and integrated project management to ensure on-time, safe delivery.
Casa Grande, Arizona HGA was engaged to provide project management services aimed at preventing rework and delays, ensuring that the project stays on schedule.
Louisiana HGA was selected to manage all aspects of grant management for the Louisiana Governor’s Office of Homeland Security and Emergency Preparedness (GOHSEP) Project, overseeing processes from project development to reimbursement and closeout.
Nebraska HGA collaborated with a leading environmental services provider to develop a state-of-the-art thermal oxidation unit for the treatment of hazardous waste.
Our owner’s representative team is providing engineering, procurement, and construction services and assisting Amogy with their ammonia-to-power system manufacturing facility in North Houston.
The HGA disaster recovery team is helping the Lafourche Parish Government manage the debris removal and grant administration to help them navigate federal disaster programs related to Hurricane Ida’s recovery effort.
The HGA disaster recovery team assisted in obtaining and managing federal grant funding challenges and has helped build capacity and efficiencies within the city.
Strategic Biofuels LLC HGA named as the Owner’s Representative and Program Management Consultant (PMC) for their carbon-negative renewable diesel plant.
Disaster Recovery
Providing support that includes documenting all storm damages and related expenses to ensure the communities receive reimbursement from FEMA.
Riley Permian
Owner’s Representative – West Texas
Providing development study to determine if asset was an excellent candidate for EOR methods.
State Of Louisiana
Disaster Recovery
Managing base camps for disaster responders and Ida disaster survivors.
2021
2020
Southwest Louisiana
Disaster Recovery
Providing program management and technical assistance for FEMA PA program.
Texas City, TX
Providing owner’s representative and project management consulting (PMC) services for their greenfield ammonia plant.
2020
2019
Puerto Rico
Disaster Recovery
Supported PRDOH’s Hurricane María and Irma CDBG-DR and CDBG-MIT programs.
North Carolina Office of Recovery and Resiliency (NCORR)
Disaster Recovery
Staff Augmentation to support planning, operations, and compliance of CDBG-DR CDBG-MIT Housing and Infrastructure recovery programs.
Established the Construction Business Unit
NextEra
Lowman Plant – Alabama
Providing pipeline and facilities designs for 54-mile pipeline, meter stations, and compressor station.
Raeford Farms
Simsboro, LA
Providing engineering, procurement, and construction (EPC) services for their new poultry mill site.
2019
2018
La Salle Lumber
Urania, Louisiana Provided Owner’s Representative services for inspection of work completed by the general contractor and ensure compliance with the contract.
Monsanto
Owner’s Representative Provided construction management and project controls for $1B plant expansion.
U.S. Virgin Islands
Disaster Recovery Technical Assistance and Planning Support for CDBG-DR Housing, Infrastructure, and Economic Development program.
Standard Lithium
El Dorado, AR Provided engineering, procurement, construction management, and staffing services for their state-of-the-art lithium extraction pilot plant.
Corning
Owner’s Representative – China Provided the consulting services/project controls to ensure the timely and accurate flow of information from the engineering phase through the delivery of equipment to minimize delays.
Midland Office
Established the Midland office.
2018
2017
State of New Louisiana
Disaster Recovery – 2016 Floods HGA provided program management for CDBG-DR housing inspections.
Transcanada
Owner’s Representative – Pipeline Provided technical input for the TC/Columbia Gas developed construction execution plans for Leach Xpress pipeline.
LANXESS
El Dorado, AR Providing a staff augmentation team to address their resource needs on several key project locations.
Aethon Energy
East Texas/North Louisiana Scope included pipeline ROW, survey, engineering and construction support to build out midstream gathering system.
2017
2016
New Jersey Resources
Philadelphia Scope included FEED, detailed engineering, and procurement for the pipeline project, and construction management.
2016
2015
Birmingham
Established the Birmingham office for Pipeline Services.
NextDecade
Program Management – LNG Pipeline Provided the project management, engineering, surveying, land services, project controls and cost estimating for the FEED services.
Anadarko
West Texas Provided survey, engineering, and design support for Permian Basin gathering system buildouts.
G2 LNG
Cameron Parish, LA Lead advisor for the overall FEED services, evaluating a $11 Billion LNG Export Project.
2015
2014
New York
Established the New York office for GOSR award.
State of New York
Disaster Recovery HGA provided program management for the $2.5B CDBG-DR infrastructure and housing programs.
R&D Engineering in Baton Rouge
The company acquired R&D Engineering in Baton Rouge.
PennTex
Louisiana Greenfield NGL Handling Facility. First significant EPC project.
Baton Rouge
Relocated the Baton Rouge office.
Lake Charles
Established the Lake Charles office.
Natural Gas
PennTex Greenfield NGL Handling Facility. First significant EPC project.
2014
2013
Jack Hunt joined HGA
2013
2012
Houston
Opened the Houston office.
2012
2011
Williams
Texas to New Jersey HGA has worked on a multitude of projects for Williams Gas Pipeline / Transcontinental Gas Pipeline.
Anadarko
South Texas Provided the project management, detailed engineering, field services, procurement and project controls for an NGL gathering system.
Anadarko
Pennsylvania Provided construction management & inspection support for Marcellus pipelines.
2011
2010
City of New Orleans
Disaster Recovery HGA provided management services for the CDBG-DR/FEMA PA programs.
Baton Rouge
Opened our first Baton Rouge office.
Pipeline Services Business Unit
HGA expands its offering with the established of the Pipeline Services Business Unit.
2010
2009
9 Parishes in Louisiana
Disaster Recovery – Gustav/Ike Provided program management for the CDBG-DR Housing and Infrastructure program.
2009
2008
Trotter Hunt joined HGA
Established Program Management Business Unit
State of Louisiana
Disaster Recovery – Piggyback Housing HGA was the program manager for the CDBG-DR Housing program.
Shreveport Building
Established Shreveport engineering office.
2008
2007
Reynolds Building
The Reynolds office is purchased in Ruston, LA
Aftermath of Hurricane Katrina/Rita
An important expansion occurs when the company expands into the Disaster Recovery business in the aftermath of Hurricane Katrina/Rita
State of Louisiana
Disaster Recovery The HGA team helped successfully manage all the CDBG-DR funded infrastructure disaster relief programs in Southeast Louisiana.
Tetra Technologies
El Dorado, AR Provided a complete project package including project management, project controls, and EPCM services.
2007
2006
Grant Forest Products
OSB Plant Allendale, SC Facilitated project recovery, project management and project controls for the construction process.
Launch of Staffing Business Unit
HGA expands its reach with the launch of the Staffing Business Unit.
2006
2003
Ruston Streetscape
Engineering Ruston, LA HGA was selected as the engineering partner in design and reconstruction of the city infrastructure.
Separated from WPS Industries
2003
2001
Don Plummer joins HGA
2001
2000
James Building
The company expands with the purchase of the James Building in Ruston, LA
Trus Joist/ Weyerhaeuser
Timberstrand Plant Kenora, Ontario Provided engineering design on greenfield plant.
2000
1997
iLevel Trus Joist Plant
Hazard, KY Provided the mechanical, electrical, civil, and structural engineering for plant expansion
LVL & I-Joint Plant
Evergreen, AL Provided the mechanical, electrical, civil, structural engineering design, as well as construction oversight
HGA Founded
Trott and Jay formed a partnership with WPS Industries in Ruston.
1997
2024
Amogy’s Ammonia-to-power System Manufacturing Facility
Our owner’s representative team is providing engineering, procurement, and construction services and assisting Amogy with their ammonia-to-power system manufacturing facility in North Houston.
2024
2023
City of Lake Charles Disaster Recovery Support
The HGA disaster recovery team is helping the Lafourche Parish Government manage the debris removal and grant administration to help them navigate federal disaster programs related to Hurricane Ida’s recovery effort.
Our staffing solutions team delivered a successful project and filled required workforce gaps.
City of Lake Charles Disaster Recovery Support
The HGA disaster recovery team assisted in obtaining and managing federal grant funding challenges and has helped build capacity and efficiencies within the city.
Renewable Diesel
2022
2021
Established the Owner’s Rep Business Unit
Lafourche Parish
Disaster Recovery Providing support that includes documenting all storm damages and related expenses to ensure the communities receive reimbursement from FEMA.
Riley Permian
Owner’s Representative – West Texas Providing development study to determine if asset was an excellent candidate for EOR methods.
State Of Louisiana
Disaster Recovery Managing base camps for disaster responders and Ida disaster survivors.
2021
2020
Southwest Louisiana
Disaster Recovery Providing program management and technical assistance for FEMA PA program.
Gulf Coast Ammonia
Texas City, TX Providing owner’s representative and project management consulting (PMC) services for their greenfield ammonia plant.
2020
2019
Puerto Rico
Disaster Recovery Supported PRDOH’s Hurricane María and Irma CDBG-DR and CDBG-MIT programs.
North Carolina Office of Recovery and Resiliency (NCORR)
Disaster Recovery Staff Augmentation to support planning, operations, and compliance of CDBG-DR CDBG-MIT Housing and Infrastructure recovery programs.
Established the Construction Business Unit
NextEra
Lowman Plant – Alabama Providing pipeline and facilities designs for 54-mile pipeline, meter stations, and compressor station.
Raeford Farms
Simsboro, LA Providing engineering, procurement, and construction (EPC) services for their new poultry mill site.
2019
2018
La Salle Lumber
Urania, Louisiana Provided Owner’s Representative services for inspection of work completed by the general contractor and ensure compliance with the contract.
Monsanto
Owner’s Representative Provided construction management and project controls for $1B plant expansion.
U.S. Virgin Islands
Disaster Recovery Technical Assistance and Planning Support for CDBG-DR Housing, Infrastructure, and Economic Development program.
Standard Lithium
El Dorado, AR Provided engineering, procurement, construction management, and staffing services for their state-of-the-art lithium extraction pilot plant.
Corning
Owner’s Representative – China Provided the consulting services/project controls to ensure the timely and accurate flow of information from the engineering phase through the delivery of equipment to minimize delays.
Midland Office
Established the Midland office.
2018
2017
State of New Louisiana
Disaster Recovery – 2016 Floods HGA provided program management for CDBG-DR housing inspections.
Transcanada
Owner’s Representative – Pipeline Provided technical input for the TC/Columbia Gas developed construction execution plans for Leach Xpress pipeline.
LANXESS
El Dorado, AR Providing a staff augmentation team to address their resource needs on several key project locations.
Aethon Energy
East Texas/North Louisiana Scope included pipeline ROW, survey, engineering and construction support to build out midstream gathering system.
2017
2016
New Jersey Resources
Philadelphia Scope included FEED, detailed engineering, and procurement for the pipeline project, and construction management.
2016
2015
Birmingham
Established the Birmingham office for Pipeline Services.
NextDecade
Program Management – LNG Pipeline Provided the project management, engineering, surveying, land services, project controls and cost estimating for the FEED services.
Anadarko
West Texas Provided survey, engineering, and design support for Permian Basin gathering system buildouts.
G2 LNG
Cameron Parish, LA Lead advisor for the overall FEED services, evaluating a $11 Billion LNG Export Project.
2015
2014
New York
Established the New York office for GOSR award.
State of New York
Disaster Recovery HGA provided program management for the $2.5B CDBG-DR infrastructure and housing programs.
R&D Engineering in Baton Rouge
The company acquired R&D Engineering in Baton Rouge.
PennTex
Louisiana Greenfield NGL Handling Facility. First significant EPC project.
Baton Rouge
Relocated the Baton Rouge office.
Lake Charles
Established the Lake Charles office.
Natural Gas
2014
2013
Jack Hunt joined HGA
2013
2012
Houston
Opened the Houston office.
2012
2011
Williams
Texas to New Jersey HGA has worked on a multitude of projects for Williams Gas Pipeline / Transcontinental Gas Pipeline.
Anadarko
South Texas Provided the project management, detailed engineering, field services, procurement and project controls for an NGL gathering system.
Anadarko
Pennsylvania Provided construction management & inspection support for Marcellus pipelines.
2011
2010
City of New Orleans
Disaster Recovery HGA provided management services for the CDBG-DR/FEMA PA programs.
Baton Rouge
Opened our first Baton Rouge office.
Pipeline Services Business Unit
HGA expands its offering with the established of the Pipeline Services Business Unit.
2010
2009
9 Parishes in Louisiana
Disaster Recovery – Gustav/Ike Provided program management for the CDBG-DR Housing and Infrastructure program.
2009
2008
Trotter Hunt joined HGA
Established Program Management Business Unit
State of Louisiana
Disaster Recovery – Piggyback Housing HGA was the program manager for the CDBG-DR Housing program.
Shreveport Building
Established Shreveport engineering office.
2008
2007
Reynolds Building
The Reynolds office is purchased in Ruston, LA
Aftermath of Hurricane Katrina/Rita
An important expansion occurs when the company expands into the Disaster Recovery business in the aftermath of Hurricane Katrina/Rita
State of Louisiana
Disaster Recovery The HGA team helped successfully manage all the CDBG-DR funded infrastructure disaster relief programs in Southeast Louisiana.
Tetra Technologies
El Dorado, AR Provided a complete project package including project management, project controls, and EPCM services.
2007
2006
Grant Forest Products
OSB Plant Allendale, SC Facilitated project recovery, project management and project controls for the construction process.
Launch of Staffing Business Unit
HGA expands its reach with the launch of the Staffing Business Unit.
2006
2003
Ruston Streetscape
Engineering Ruston, LA HGA was selected as the engineering partner in design and reconstruction of the city infrastructure.
Separated from WPS Industries
2003
2001
Don Plummer joins HGA
2001
2000
James Building
The company expands with the purchase of the James Building in Ruston, LA
Trus Joist/ Weyerhaeuser
Timberstrand Plant Kenora, Ontario Provided engineering design on greenfield plant
2000
1997
Trus Joist
Trott and Jay formed a partnership with WPS Industries in Ruston.
iLevel Trus Joist Plant Hazard, KY
Provided the mechanical, electrical, civil, and structural engineering for plant expansion
LVL & I-Joint Plant Evergreen, AL
Provided the mechanical, electrical, civil, structural engineering design, as well as construction oversight
1997
Timeline
1997
Ruston, LA
Trott and Jay formed a partnership with WPS Industries in Ruston
1997
1997
Trus Joist
iLevel Trus Joist Plant Hazard, KY Provided the mechanical, electrical, civil, and structural engineering for plant expansion
1997
1997
Trus Joist
LVL & I-Joint Plant Evergreen, AL Provided the mechanical, electrical, civil, structural engineering design, as well as construction oversight
1997
2000
James Building
The company expands with the purchase of the James Building in Ruston, LA
2000
2000
Trus Joist/ Weyerhaeuser
Timberstrand Plant Kenora, Ontario Provided engineering design on greenfield plant
2000
2001
2001
Don Plummer joins HGA
2001
2003
Ruston Streetscape
Engineering Ruston, LA HGA was selected as the engineering partner in design and reconstruction of the city infrastructure
2003
2003
2003
Separated from WPS Industries
2003
2006
Grant Forest Products
OSB Plant Allendale, SC Facilitated project recovery, project management and project controls for the construction process
2006
2006
2006
HGA expands its reach with the launch of the Staffing Business Unit
2006
2007
Reynolds Building
The Reynolds office is purchased in Ruston, LA
2007
2007
2007
An important expansion occurs when the company expands into the Disaster Recovery business in the aftermath of Hurricane Katrina/Rita
2007
2007
State of Louisiana
Disaster Recovery The HGA team helped successfully manage all the CDBG-DR funded infrastructure disaster relief programs in Southeast Louisiana
2007
2007
Tetra Technologies
El Dorado, AR Provided a complete project package including project management, project controls, and EPCM services.
2007
2008
2008
Trotter Hunt joined HGA
2008
2008
2008
Established Program Management Business Unit
2008
2008
State of Louisiana
Disaster Recovery – Piggyback Housing HGA was the program manager for the CDBG-DR Housing program
2008
2008
Shreveport Building
Established Shreveport engineering office
2008
2009
9 Parishes in Louisiana
Disaster Recovery – Gustav/Ike Provided program management for the CDBG-DR Housing and Infrastructure program
2009
2010
City of New Orleans
Disaster Recovery HGA provided management services for the CDBG-DR/FEMA PA programs
2010
2010
Baton Rouge
Opened our first Baton Rouge office
2010
2010
2010
HGA expands its offering with the established of the Pipeline Services Business Unit
2010
2011
Williams
Texas to New Jersey HGA has worked on a multitude of projects for Williams Gas Pipeline / Transcontinental Gas Pipeline
2011
2011
Anadarko
South Texas Provided the project management, detailed engineering, field services, procurement and project controls for an NGL gathering system
2011
2011
Anadarko
Pennsylvania Provided construction management & inspection support for Marcellus pipelines
2011
2012
Houston
Opened the Houston office
2012
2013
2013
Jack Hunt joined HGA
2013
2014
New York
Established the New York office for GOSR award
2014
2014
State of New York
Disaster Recovery HGA provided program management for the $2.5B CDBG-DR infrastructure and housing programs
2014
2014
2014
The company acquired R&D Engineering in Baton Rouge
2014
2014
PennTex
Louisiana Greenfield NGL Handling Facility. First significant EPC project.
2014
2014
Baton Rouge
Relocated the Baton Rouge office
2014
2014
Lake Charles
Established the Lake Charles office
2014
2015
Birmingham
Established the Birmingham office for Pipeline Services
2015
2015
NextDecade
Program Management – LNG Pipeline Provided the project management, engineering, surveying, land services, project controls and cost estimating for the FEED services
2015
2015
Anadarko
West Texas Provided survey, engineering, and design support for Permian Basin gathering system buildouts
2015
2015
G2 LNG
Cameron Parish, LA Lead advisor for the overall FEED services, evaluating a $11 Billion LNG Export Project
2015
2016
New Jersey Resources
Philadelphia Scope included FEED, detailed engineering, and procurement for the pipeline project, and construction management
2016
2017
State of New Louisiana
Disaster Recovery – 2016 Floods HGA provided program management for CDBG-DR housing inspections
2017
2017
Transcanada
Owner’s Representative – Pipeline Provided technical input for the TC/Columbia Gas developed construction execution plans for Leach Xpress pipeline
2017
2017
LANXESS
El Dorado, AR Providing a staff augmentation team to address their resource needs on several key project locations
2017
2017
Aethon Energy
East Texas/North Louisiana Scope included pipeline ROW, survey, engineering and construction support to build out midstream gathering system
2017
2018
La Salle Lumber
Urania, Louisiana Provided Owner’s Representative services for inspection of work completed by the general contractor and ensure compliance with the contract
2018
2018
Monsanto
Owner’s Representative Provided construction management and project controls for $1B plant expansion
2018
2018
U.S. Virgin Islands
Disaster Recovery Technical Assistance and Planning Support for CDBG-DR Housing, Infrastructure, and Economic Development program
2018
2018
Standard Lithium
El Dorado, AR Provided engineering, procurement, construction management, and staffing services for their state-of-the-art lithium extraction pilot plant
2018
2018
Corning
Owner’s Representative – China Provided the consulting services/project controls to ensure the timely and accurate flow of information from the engineering phase through the delivery of equipment to minimize delays
2018
2018
Midland Office
Established the Midland office
2018
2019
Puerto Rico
Disaster Recovery Supported PRDOH’s Hurricane María and Irma CDBG-DR and CDBG-MIT programs
2019
2019
North Carolina Office of Recovery and Resiliency (NCORR)
Disaster Recovery Staff Augmentation to support planning, operations, and compliance of CDBG-DR CDBG-MIT Housing and Infrastructure recovery programs
2019
2019
2019
Established the Construction Business Unit
2019
2019
NextEra
Lowman Plant – Alabama Providing pipeline and facilities designs for 54-mile pipeline, meter stations, and compressor station
2019
2019
Raeford Farms
Simsboro, LA Providing engineering, procurement, and construction (EPC) services for their new poultry mill site
2019
2020
Southwest Louisiana
Disaster Recovery Providing program management and technical assistance for FEMA PA program
2020
2020
Gulf Coast Ammonia
Texas City, TX Providing owner’s representative and project management consulting (PMC) services for their greenfield ammonia plant
2020
2021
2021
Established the Owner’s Rep Business Unit
2021
2021
Lafourche Parish
Disaster Recovery Providing support that includes documenting all storm damages and related expenses to ensure the communities receive reimbursement from FEMA
2021
2021
Riley Permian
Owner’s Representative – West Texas Providing development study to determine if asset was an excellent candidate for EOR methods
2021
2021
State Of Louisiana
Disaster Recovery Managing base camps for disaster responders and Ida disaster survivors
Our staffing solutions team delivered a successful project and filled required workforce gaps
2022
2022
City of Lake Charles Disaster Recovery Support
The HGA disaster recovery team assisted in obtaining and managing federal grant funding challenges and has helped build capacity and efficiencies within the city.
2022
2023
Assisting Lafourche Parish with Hurricane Ida Recovery
The HGA disaster recovery team is helping the Lafourche Parish Government manage the debris removal and grant administration to help them navigate federal disaster programs related to Hurricane Ida’s recovery effort.
2023
2024
Amogy’s Ammonia-to-power System Manufacturing Facility
Our owner’s representative team is providing engineering, procurement, and construction services and assisting Amogy with their ammonia-to-power system manufacturing facility in North Houston.
Urania, Louisiana
East Texas/North Louisiana
The Reynolds office is purchased in Ruston, LA
