Our certified, experienced staff offers design support services as well as construction support services. Familiarity with native soils and their unique compaction requirements are essential to a high quality civil design. A local presence as well as local knowledge help keep your project running on time. With our lab down the hall from our civil designers, lines of communication are immediate and clear. Materials testing samples go straight from the site to our lab, keeping turnaround times tight.
Our in-house laboratory offers:
- Soils Investigations/Reports
- Concrete Testing
- Asphalt Testing
- Soils Compaction Testing
- Drilling - Soil Borings
Agua Caliente Solar Project - Yuma County, Arizona
Located on 2,400 acres of farmland in Yuma County, Arizona near the communities of Dateland and Hyder, the Agua Caliente Solar Project is a 290 megawatt (MW) solar photovoltaic (PV) generating facility. NEI Geotechnical is providing materials testing for this project. Our testing includes nuclear density testing, and standard moisture-density relations (proctors).
Wellton Border Patrol Station - Wellton, Arizona
The Wellton Border Patrol Station Project, estimated at $22 million, is located on a 50-acre site in Wellton, AZ. NEI Geotechnical is providing the materials testing for this project. Testing includes nuclear density testing, sand cone compaction testing, moisture density relations (proctors) sieve analysis, and concrete/grout/mortar compression testing.
Hoodoo Wash Switchyard - Yuma County, Arizona
This project, located near Dateland, Arizona, is for the interconnection of the 290 megawatt Agua Caliente Solar Project. NEI Geotechnical provided nuclear density testing, moisture density relations, sieve analysis and concrete compression testing.
Joint Tunnel Test Range, Yuma Proving Ground - Yuma, Arizona
This project is located within the US Army Yuma Proving Ground in La Paz County, Arizona. The project design included two test tunnel facilities with structural shafts on each end, and a hand-excavated, wood-shored tunnel connecting the two shafts. Our affiliate, GCE, was contracted to perform topographic surveying, civil engineering, specification preparation, and environmental engineering for the project. GCE prepared the Environmental Protection Plan (EPP) and Stormwater Pollution Prevention Plan (SWPPP) for the construction project. The EPP and SWPPP were both approved by YPG without comment. Nicklaus Engineering, Inc. provided materials testing and construction staking services. It is because of the multi divisional services offered by GCE and NEI, that this project could be completed seamlessly on schedule and within budget.
Sewage Lagoons, Yuma Proving Ground - Yuma, Arizona
The wastewater treatment plant at the Materials Test Area of the Yuma Proving Ground originally consisted of three unlined lagoons and three sludge drying beds. However, the facility's Aquifer Protection Permit (APP) required a synthetic liner to be placed in each of the three existing lagoons, construction of two new lined lagoons, and closure of the sludge drying beds.
The comprehensive scope of work for this project demanded a full service engineering and consulting firm. GCE's multi-disciplinary staff of professionals were able to quickly respond to the needs of the general contractor. Initially, GCE provided inspection services during lagoon lining and construction. Our inspectors hold over 15 certifications for construction and special inspections.
Once the lagoons were constructed, GCE's environmental staff prepared all of the required plans and specifications for installation of a Point of Compliance monitoring well. Specifically, GCE prepared a health and safety plan, well installation and development plan, field sampling plan and material handling plan. Following well installation, GCE's team of environmental professionals collected samples to characterize all waste material for disposal, and to assess groundwater quality beneath the facility.
Finally, the task of achieving Arizona Department of Environmental Quality (ADEQ) closure of the former sludge drying beds was accomplished by GCE. In accordance with the requirements of the facility's APP, GCE prepared a Clean Closure Plan for the site. Once the plan was approved, by the ADEQ, GCE collected the required samples, and prepared a final sampling report to document the closure of the facility. This project was completed on time and under budget as direct result of GCE's full service capabilities. This project provides a clear example of GCE's capabilities with construction inspection, material handling, and regulatory compliance.
Taxiway A, K, and L, Marine Corps Air Station - Yuma, Arizona
This Shoulder Repair Project is a Design/Build project for Marine Corps Air Station, Yuma. The project is an Indefinite Delivery Indefinite Quantity (IDIQ) Multiple Award Construction Contract (MACC) awarded by NAVFAC Southwest.
NEI was tasked with providing a topographic survey, site design and technical specifications to meet the requirements of current Department of Navy Unified Facilities Criteria.
The preliminary and design phase of the project is complete and the project is now under construction.