Trunk Line South

Geotechnical Instrumentation and Monitoring for Trunk Line South – Unit 4 / Phase 2 (2015-2016) The purpose of the project was to monitor the displacement of the deep tunnel shafts’ walls and the settlement of the underground tunnel due to the construction of a new sewer line. GAI provided geotechnical instrumentation and monitoring services for…

Queen Mary Waterfront Development

Geotechnical Investigation for Queen Mary Waterfront Development at Port of Long Beach (2016-2017) In January 2016, the City of Long Beach approved a 66-year lease contract for the Urban Commons, a Los Angeles-based investment company, to take over the master lease for the Queen Mary and about 43 acres of surrounding waterfront land. Urban Commons…

Recycled Water Pipeline System Extension

Geotechnical Engineering Study for Recycled Water Pipeline System Extension for Various Streets (2017) The project included an extension of a proposed recycled water pipeline in six different streets within the City of South Gate. The total length of the project was approximately 22,500 feet, about 4.3 miles. The client for this project was CBMWD, and…

Quadrant III Water Main Replacement

Geotechnical Investigation for Quadrant III Water Main Replacement at Various Locations (2018) The project included the design and construction of the Quadrant III Water Main Replacement comprising 13 segments. The project required the replacement of the 8-inch diameter Class 200 PVC piping, located approximately 4 to 5 feet below the ground surface. The length of…

Hyperion Water Reclamation Plant

Geotechnical Investigation for Advanced Water Purification Facility for the Hyperion Water Reclamation Plant (HWRP) (2019-2020) HWRP is located within the City of Playa Del Rey, California, and is the largest facility of its kind in California. The Plant included several below-grade and partially below-grade liquid retaining structures, pump stations, and a below-grade pipeline system. In…

San Fernando Groundwater Basin Remediation

Geotechnical and Geohazard Investigation of Treatment Facilities for the San Fernando Groundwater Basin Remediation, a Progressive Design-Build Project (2019-2022) LADWP selected Kiewit Infrastructure West Co. to provide progressive Design-Build services for the San Fernando Groundwater Basin (SFB) Remediation Project. The project included the design and construction of treatment facilities and other improvements at two plant…