| Freeland_Engineering Consulting engineers serving the public and private sectors in the Pacific Northwest Region of the United States. |
| G_F_Civils_Ltd Offers a wide range of quantity surveying and commercial management services to clients in the civil engineering industry in the UK and overseas. |
| Galvanyze_Limited_Consulting_Engineers Consulting civil and structural engineers based in Bath handling development projects across Wales, South West England, and nationally. |
| Gannett_Fleming,_Inc_ Specializing in engineering design, planning, and construction management services for environmental, industrial, commercial projects and land development in Camp Hill, PA. |
| GAP_Ltd_ Investigate, oversee and advise on civil and structural matters in the retail, leisure, water, health commercial and housing sectors. |
| G_C__Wallace,_Inc_ Full service engineering firm specializing in all facets of civil engineering and design. |
| Geo-Explorers A geotechnical and foundation engineering consulting firm. Located in Collegeville, Pennsylvania. |
| Geological_Engineering_Ltd_ Geotechnical engineering consultancy services including rock mechanics and soil engineering, slope stabilization, underground excavations, and major bridge and building foundation engineering, based i |
| Geoplan_Consultants_Inc_ Provides a variety of services including surveying, GIS development, transportation planning and design, and economic analysis and management consulting in Canada. |
| George_F__Young,_Inc_ A Florida consulting company offers architectural, engineering, planning, landscape architectural, surveying, and subsurface utility engineering services. |
| Geotec_Associates Specializing in the use of geotubes, geobags, and geocontainers for dewatering dredged material, sewage sludge, and contaminated soils. |
| Geotechnical_Engineering_and_Testing Provides civil and structural engineering services, forensic testing and geotechnical services throughout the Southwest. |
| The_Geotechnical_Group,_Inc__(TGG) A geotechnical and environmental consulting firm with a soil testing laboratory serving the New England area. |
| GeoTek_Solutions Geotechnical and engineering geology consulting, specializing in slope stability for mining and civil engineering, in Australia and southwest Pacific. |
| Giler_Urban_Design Consulting for master planning, design and construction in Florida. |
| Glanville_Consulting_Engineers Providing civil and structural engineering design and construction services. Located in Oxfordshire, England. |
| Globe_Engineering,_Inc_ A provider of professional civil engineering services. Located in North Fort Lauderdale, Florida. |
| Goodson_Associates_Ltd Consulting civil and structural engineers based in the UK. |
| Goodwin-Lasiter,_Inc_ Provides civil engineering services and architecture including WWTP, water wells, elevated tanks, and related items in Texas. |
| Graham_Daws_Associates_Ltd An engineering consultancy advising on the application of rock mechanics to the civil and mining engineering industries. Located in Derbyshire, England. |
| Greyback_Construction General contracting, engineering, and construction management services located in Penticton, BC. |
| GreyFox_Consulting Civil and structural engineering consulting services for commercial, residential, industrial, and educational facilities. Located in Philadelphia, Pennsylvania. |
| Ground_Engineering_Solutions Geotechnical, geoenvironmental and civil engineering consultants offering risk management, value engineering and design consultancy services. |
| GSA_Engineers An engineering consulting firm located in Gonzales, Louisiana. |
| H2A_Engineers,_P_S_C_ Comprehensive engineering consulting office specializing in the fields of civil and structural engineering. |
| Hammond_Collier_Wade_Livingstone Specializing in civil and municipal engineering, including planning, engineering, environmental, operational support, design and consultation. |
| Hampton,_Lenzini_and_Renwick,_Inc_ Civil engineering firm providing quality transportation engineering, structural engineering and surveying services in Northern Illinois and Springfield, Illinois. |
| Hatch Provides feasibility studies, engineering designs, procurement and construction management. |
| HCL_Engineering_and_Surveying,_LLC A Colorado firm providing a full range of civil engineering and surveying services. |
| Howard/Stein-Hudson_Associates,_Inc_ Provides consulting services in the areas of traffic engineering, roadway design and civil engineering, and land development and institutional planning. |
| Hudson_Marine_Inc_ An engineering and construction company specializing in underwater services based in Pelham, New York. |
| Hughes_Surveys Provides civil engineering services in New Brunswick and serving the Atlantic Coast of Canada and the North Eastern United States. |
| H_Y__Engineering_Ltd_ British Columbia based civil engineering company providing engineering and survey services for commercial, land development and municipal projects. |
| Hyalite_Engineers,_PLLC Civil and environmental consultant engineering firm providing services for water, wastewater, and land development projects. |
| Hydrogeophysics Company specializing in the application of non-invasive, non-destructive geophysical methods to environmental, hydrological, civil, and geological engineering problems |
| HydroLogics,_Inc_ Specializes in water systems analysis, operations planning, and conflict resolution using dispute resolution services. |
| Hydrologue Provides services in environmental, civil, and geological engineering. |
| iConsult_Group Provides engineering services for problems involving water hammer in sewer and waterworks, transient analysis, protection recommendation ,simulation , modeling of system and pumping stations. |
| iLi_Consulting_Engineers_Mekong_Ltd Architectural and Civil Consulting Engineers for the Mekong region. |
| IMS_Tunnel_Consultancy_Ltd Provides specialized services for the planning, design and construction supervision of all types of tunnels for all ground conditions. |
Hydraulic Analysis & Pipeline Transients
Lake & Reservoir Water Quality Analysis
Computational Fluid Dynamics
Turbulent Mixing & Dispersion Analysis
Bay-Delta Modeling
Harrisonburg, VA 
