Between 1998 and 2003, Group Delta, an NV5 Company, investigated slope failures around the Big Canyon Country Club golf course in Newport Beach. The team conducted geotechnical studies, recommended repair options, and prepared construction plans. Repairs included improving surface and subsurface drainage, removing slide debris, stabilizing slopes through excavation and benching, using geogrid reinforcement and erosion control fabric, rebuilding slopes, and adding landscaping with irrigation.
The City of Newport Beach reviewed and approved the plans, and Group Delta monitored construction and compaction, submitting final reports to the city. After heavy rains in 2004–2005 caused new slope failures nearby, the previously repaired areas remained stable, proving the effectiveness of the work.
For the current phase, our team again provided geotechnical investigation, repair plans, and on-site testing during construction.
Group Delta Added Value:
- Proven Long-Term Slope Stabilization: Our team designed and implemented durable slope repair solutions, including geogrid reinforcement, drainage improvements, and slope reconstruction, that remained stable through one of the wettest seasons on record, validating the effectiveness of our team’s engineering approach.
- Comprehensive Geotechnical Services: Our team provided full-scope support from initial investigations and repair design to preparation of plans and specifications, as well as construction-phase observation and compaction testing to ensure quality and compliance.
- Trusted Partner for Ongoing Resilience: Our team repeatedly selected by the client over multiple years to address new slope failures, demonstrating our team’s reliability, technical expertise, and deep understanding of site-specific geotechnical conditions.
Location:
Newport Beach, California
Client:
City of Newport Beach
Project Owner:
City of Newport Beach
Service:
Geotechnical Investigation
Market:
Cities & Counties
Project Size: 14.3 Acres
Project Cost: $5.6 Million
