Arroyo de la Laguna Bridge

Cornerstone Earth Group, Inc. performed advanced borings with a limited access drilling rig to evaluate the engineering properties of the underlying soil for a new multi-use bridge crossing over Arroyo de la Laguna at the Castlewood Country Club in Pleasanton, California. Cornerstone prepared a report outlining the geotechnical design criteria for new bridge foundations at […]

San Jose Airport Taxiway Extension

The City of San José is planning a Taxiway V extension and Cornerstone Earth Group, Inc. is providing environmental and geotechnical services at the San Jose Mineta International Airport in support of our client, Kimley-Horn. The project will consist of the removal of the existing parallel taxiways, constructing new taxiways, extending Taxiway V into the […]

Grand Opening of Gateway at Millbrae Station

Four Cornerstone Earth Group, Inc. Principals recently attended the Grand Opening of the new Gateway at Millbrae Station developed by Republic Urban Properties. The Gateway at Millbrae Station is a 17-acre urban mixed-use development that is located immediately east of the Millbrae Intermodal Terminal crossing of the BART and Caltrain Station. It is one of […]

Groundwater Monitoring at Meta Campus

Cornerstone Earth Group, Inc. recently installed eleven groundwater monitoring wells at the Meta Bayfront Campus in Menlo Park. These wells will be utilized by TE Connectivity for their continued long-term groundwater monitoring at the Bayfront Campus. Landscape protection was utilized during the installation of the wells to mitigate tracking and soil compaction. To minimize disruption […]

Cornerstone Turns 16!

Cornerstone Earth Group, Inc. recently celebrated its 16th Anniversary with team luncheons in our Sunnyvale and Walnut Creek offices. The celebration featured excellent Mediterranean cuisine and drink. As you can see in this video, a good time was had by all as they celebrated and reminisced about the early days at Cornerstone. Our sincere appreciation […]

Google Campus Midpoint@237

In this photo, a Cornerstone Earth Group, Inc. Staff Engineer approaches a recently backfilled trench with a slide hammer and nuclear gauge. Our engineer is preparing to perform a density test to determine the degree of fill compaction at Midpoint@237, an office and manufacturing campus in the Silicon Valley “Golden Triangle.” Cornerstone was originally retained […]