Cellular Antenna Tower Sites
Client: NTCH Colorado, Inc. and American Tower Corporation
Location
Twenty-eight various cellular antenna sites located in Mesa, Delta and Montrose Counties, Colorado.
Services Performed
Soils investigation for foundation design, environmental site assessment, materials testing during construction.
Cost: $3,000,000
Unique Project Characteristic:
This project involved an initial launch of a cellular communications network that included short turnaround scheduling and daily coordination with the project design and construction team. Antenna foundations which were designed and constructed varied from driven piling to drilled caisson to shallow mat.
Mesa County Justice Center
Client: Mesa County, Colorado
Location
Spruce Street and Main Street, Grand Junction, Colorado
Services Performed
GEG was the project geotechnical design consultant and performed all construction inspection and materials observation and testing.
Cost: $30,000,000
Unique Project Characteristic:
This project consisted of a four story, government building, tunnel to the existing prison facility, a jail pod expansion and a work release building. Foundations included driven piling, spread footing and helical pier underpinning. Our work on this project, from start to completion, required competent engineering judgement, timeliness and accuracy in field services and ability to work effectively with a large project team.
Grand Junction City Hall
Client: Shaw Construction Company
Location
250 North 5th Street, Grand Junction, Colorado
Services Performed
GEG was the project geotechnical design consultant and performed all construction inspection and materials observation and testing.
Cost: $6,500,000
Unique Project Characteristic:
This project consisted of a two story, government building on driven pile foundations. Our work on this project, from start to completion, required competence, accuracy and the ability to maintain trust of the owner and contractor during this fast track project.
Ute Water Plateau Creek Waterline Replacement Project
Client: Ute Water Conservancy District
Location
Collbran to Palisade, Colorado
Services Performed
We provided materials testing of water line backfill and Portland cement concrete, grout and shotcrete placement.
Cost: $20,000,000
Unique Project Characteristic:
On call testing services provided within 2 hours notice. After hours and weekend ‘on call’ type work. We started at project commencement and continue to provide services because of our responsiveness and training.
Walker Field Airport Runway / Taxiway Rehabilitation
Client: United Companies
Location
Grand Junction, Colorado
Services Performed
We provided asphalt materials compliance testing during construction.
Cost: $1,000,000
Unique Project Characteristic:
We performed asphalt compliance testing under strict Federal Aviation Administration (FAA) guidelines and surveilence / direction by the project engineer.
Garfield County Airport Runway / Taxiway Improvements
Client: Con-Sy Inc.
Location
Rifle, Colorado
Services Performed
We provided soil grading fill and pavement base and sub base course materials compliance testing during construction.
Cost: $600,000
Unique Project Characteristic:
We performed grading fill and pavement base / sub base course compliance testing under strict Federal Aviation Administration (FAA) guidelines and surveillance / direction by the project engineer.
Albertson's and Albertson's Express No. 897 Project
Client: Regency Realty (development and construction) & Albertsons, Inc. (construction)
Location
Redlands Marketplace Shopping Center, Grand Junction, Colorado
Services Performed
Soils investigation for foundation design, materials testing during construction.
Cost: $1,500,000
Unique Project Characteristic:
This project consisted of design and construction of a ‘big box’ type retail center, including one anchor store (Albertsons), one retail strip building and one fuel center. Two other retail pads are developed for future construction.
South Rim Slope Investigation
Location
South Rim Subdivision, Grand Junction, Colorado
Services Performed
Geotechnical investigation to evaluate subsurface conditions and analyze slope stability.
Unique Project Characteristic:
This project site is located along the Grand Junction, Colorado bluff overlooking the Colorado River. Numerous portions of the bluff in this area have become unstable and experienced slope failure. This project included evaluation and preparation of remedial alternatives.
Services
A Variety of Engineering Support Services At Your Disposal
To read about some of the services we offer, click a service type below:
Energy Services
Overview
Typical energy services involve site engineering for field infrastructure, including Roadways, Pads, Distribution Lines, Compression Plants, Erosion Control, Reclamation, water wells and sewage disposal systems. Construction services for energy clients start with a fast response by our field personnel and short turn around reporting of results.
Civil Engineering Services
Well Pad and Compressor Pad construction design, especially for well pads required for locations with challenging geotechnical constraints including steep slopes, slope stability, rock fall. Rock fall mitigation including rock trenches and rock fall nets. Erosion Control Plans for pipe alignments and gas field roads. Grading plans for pads, pipelines and roadways. Embankment design for soil repository and water impoundments. Reserve pit design.
Environmental Services
Stormwater control plans, permitting and compliance. Water well design and construction. Sewage disposal system design and construction. Pit reclamation and liner determinations.
Structural Services
Foundation design for energy structures including Communication Towers, Compressor Pads and Tanks. Foundation design for Bridges and Culvert drainage crossings.
Geotechnical Services
Exploratory drilling and soil analysis for infrastructure design and design validation. Analysis for remediation of unstable soil conditions.
Geotechnical Services
Soil and Foundation Investigations
Foundation investigations vary according to the type of structure and the nature of subsurface conditions. Our services can assess and solve foundation problems for the following:
- Transportation, including airport, railroad and highway alignments
- Utilities, including power plants, transmission lines, pipelines, and municipal
facilities
- Industrial Facilities, including heavily–or dynamically–loaded foundations
- Mine Structures, including mills, preparation plants, headframes, and conveyors
- Embankments, including grading fill and dams
- Commercial/Residential Structure
Engineering Geology/Geologic Hazards Evaluations
Engineering geology studies are frequently necessary to provide information needed for more comprehensive site engineering evaluations. In addition, they give direct information on potential geologic problems in site development. Services provided in this area include:
- Air photo analysis for fault identification, borrow area analysis, and landslide susceptibility
- Seismic risk studies and estimation of earthquake ground motion parameters
- Identification of landslide, mudflow, and avalanche hazards
- Evaluation of potential for swelling or collapsible soils, mine subsidence, and other geologic hazards
Slope Stability Evaluations
The stability of natural slopes is often an important constraint in siting structures, and the stability of cut slopes strongly influences the safety and cost of projects. Services provided in the assessment of slope stability include:
- Design of cut slopes in soil and rock
- Cut slope stabilization by bolting or drainage
- Assessment of landslide potential
- Stabilization of existing landslides
- Instrumentation for slope movement and pore pressure condition
Site Characterization and Site Selection
For some types of facilities, geotechnical considerations are of fundamental importance in locating the site and establishing its feasibility. Examples include heavy power plant or industrial structures, hazardous waste facilities, landfills, and corridors for pipelines and transmission lines. Geotechnical Engineering Group, using a systems approach, will identify alternative sites or routes, define critical parameters, and perform thorough geotechnical/geological investigations. This approach allows for comparison of sites and provides documentation of the site-selection decision for regulatory or permitting agencies. Services in site characterization and selection include:
- Geologic mapping of structure and lithology
- Geologic “fatal flaw” analysis
- Field investigation of alternative sites by drilling and field permeability testing
- Definition of soil and rock properties by laboratory testing
- Comparative site evaluation on the basis of geotechnical suitability
- Assessment of site development feasibility, problems, and cost
Sample Projects
Material Testing Services
Construction Observation and Testing
Construction observation and testing services are offered to provide a level of assurance that construction achieves the intent of the design. The following quality control services are performed for earthwork, concrete, and asphalt:
- Experienced technicians and/or resident engineers to supervise and inspect earth fill placement, inspection of construction, observation of contractor
operations.
- Field testing equipment including nuclear moisture/density gauges, which allows the most efficient use of field personnel in earth fill quality control testing.
- Equipment and trained personnel for sampling and testing concrete
and asphalt.
- Mobile laboratories which can be quickly moved to a job site with the
quality control testing equipment required for that specific project.
In addition, we also provide Building Department required "special inspection" type services such as: structural steel, weld, bolt/connection. fireproofing and reinforcing steel.
Engineering Support Services
Geotechnical Engineering Group provides complete in-house laboratory support for its consulting and engineering activities. This ensures better technical coordination and more effective project management, budget control, and schedule compliance.
Sample Projects
Environmental Services
Overview
- Stormwater Control and Permitting
- Underground Storage Tank Evaluation
- Phase I Level Environmental Risk Assessments
- Intrusive Environmental Risk Assessments
- Remediation Design, Observation and Testing
- Radon Testing
Environmental Geology Investigations
- Ground-water pollution studies, baseline water quality determinations and monitoring
- Geologic hazards evaluations for surface and subsurface development
- Land use evaluations
- Solid and liquid waste disposal studies – contaminant migration and seepage
Hydrogeology
- Water supply source development
- Retention structure designs
- Ground-water evaluations and development studies
- Dewatering investigations for excavations and pits
- Site sewage disposal system designs
Engineering Geology
- Geologic field mapping and interpretation
- Tailing disposal management – surface and subsurface systems
- Lithologic core logging
- Slope stability and mined land reclamation studies
- Aggregate and industrial minerals resource evaluations and exploration
Our Qualifications
Geotechnical Engineering Group, Inc. is a regional engineering firm, practicing mainly in the highly variable geology of Colorado, Utah, New Mexico, and Wyoming. Geotechnical Engineering Group's high level of technical expertise and specialized experience in geotechnical, geological, environmental and materials engineering / testing provides our clients with effective and practical solutions. Our firm provides design and analytical expertise backed up by a complete range of in-house support services. These services include construction supervision and observation, field testing and instrumentation, soil and foundation investigations, environmental investigations, and laboratory testing.
GEG has completed numerous local high profile projects including Mesa County Justice Center, Mesa County Jail, Grand Junction City Hall, Riverside Parkway and the 30 Road Underpass.
Along the way, GEG has grown and expanded their primary service area to Western Colorado, Wyoming, Utah and New Mexico. They have completed significant commercial, industrial and government projects. Among those are projects for Department of Defense at the Savannah River site in South Carolina and Crescent Junction / Moab site in Utah. Another significant project we performed was the civil and geotechnical design and construction management of a 500,000 acre gas field development site located in western Colorado for Chevron USA. We regularly represent energy producers in the regional oil field with gas and oil shale infrastructure, oil field services include environmental, geotechnical, civil and structural engineering and compliance. GEG is now a firm with 4 engineers on staff and 16 scientists and engineering technicians.
Certifications
- Colorado Department of Transportation
- U.S. Department of Transportation
- Colorado Asphalt Producers Association (CAPA)
- AASHTO Materials Reference Laboratory
- Colorado Ready Mixed Concrete Association (CRMCA)
- American Concrete Institute (ACI)
- Occupational Safety and Health Administration (OSHA)
- U.S. Department of Energy (USDOE)
- National Institute for Certification of Engineering Technicians (NICET)
