GMU conducted a long-term groundwater study for Rancho Mission Viejo in South Orange County. GMU drilled and installed more than 60 monitoring wells, installed pneumatic piezometers and data loggers, and regularly monitored groundwater levels and water chemistry on and near the site. Studies were conducted in Chiquita, Gobernadora and Cristianitos canyons. GMU has also provided geological consultation for the installation of Rancho Mission Viejo’s agricultural production wells
Custom Homes
GMU regularly provides design and construction support for custom home sites. We often work directly for the lot owner; other times we’re a consultant to the architect or general contractor. Sites have ranged in size from half-acre to 12 acres, with projects including multi-level basements, subterranean parking, guest houses, swimming pools, retaining walls and elaborate flatwork.
On-call City Geotechnical Services
GMU specializes in providing on-call geotechnical and materials testing services for cities. Our on-call services have been utilized for new City Halls, pavement rehabilitation and maintenance, new streetscapes, landslide repairs, third party reviews, etc. We have provided on-call services to the following cities:
- Laguna Niguel
- Newport Beach
- Irvine
- Rancho Santa Margarita
- AlisoViejo
- Laguna Hills
- Chino Hills
- Lake Forest
- Dana Point
- Mission Viejo
Ladera Ranch
Over the course of a decade, GMU provided lead geotechnical design and construction services for Ladera Ranch, a 4,000-acre master-planned community in South Orange County developed by Rancho Mission Viejo. The challenging hillside site featured a variety of complicated soils conditions, including numerous landslides, that were evaluated and remediated in the course of 100 million cubic yards of corrective grading. GMU received a number of awards for our work at Ladera Ranch, including 2004 ASCE Project of the Year.
Rancho Mission Viejo
GMU has served as the geotechnical consultant for the long-range planning of Rancho Mission Viejo, a large master-planned community slated for 14,000 homes plus related infrastructure, commercial, and retail uses. GMU’s services have spanned from original entitlement and EIR studies through final design and permits. GMU is actively providing the geotechnical observation and testing services for construction of the first two villages of Sendero and Esencia.
Dana Point Pedestrian Bridge
The Dana Point Pedestrian Bridge was a major part of the PCH Traffic Congestion Relief Project. This project included numerous street improvements in addition to the award-winning pedestrian bridge that spans Pacific Coast Highway. GMU provided investigation, design, and construction services, including inspection and testing during grading and construction.
Laguna Niguel Metrolink Station
GMU served as the lead geotechnical consultant during planning and construction of the Laguna Niguel Metrolink Station, a new multi-modal transportation center for South Orange County that included passenger platforms, a pedestrian underpass, track realignments and parking and drainage improvements. GMU performed a geotechnical investigation and prepared geotechnical maps and cross sections to guide grading and construction of the facility. GMU also provided geotechnical recommendations for shoring, testing and dewatering services.
Antonio Parkway and Bridge Widening
GMU has worked with Rancho Mission Viejo and the County of Orange to provide geotechnical design and construction services for the road and bridge widening on Antonio Parkway and a portion of La Pata Avenue. The project includes widening this County arterial highway from 4 lanes to 6 lanes, plus widening of the existing 780-foot long, 5-span bridge over San Juan Creek. For the bridge widening, GMU’s Foundation Report included detailed analysis and recommendations for liquefiable soils that influenced bridge foundations.
La Pata Gap Closure – Roadway and Bridges
GMU provided geotechnical design services to the County of Orange during the Feasibility Study, Project Report, and Final Design (PS&E) phases of the La Pata Gap Closure Project. GMU conducted subsurface exploration and analyzed several potential roadway alignments. The investigation and analyses addressed large deep-seated landslide complexes and critical slope stability issues adjacent to utility towers.
Bake Parkway and Lake Forest Drive – Roadway and Bridges
GMU provided geotechnical design and construction services for multiple phases of the Bake Parkway and Lake Forest Drive extensions. The project included significant rough grading for the roadways and bridge embankments, plus construction of three bridges over San Diego Creek and Veeh Creek. Drainage channel improvements and street improvements were also a significant part of the project. GMU provided geotechnical observation and testing services for rough grading, plus materials testing and special inspection services for bridge construction.
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