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GS Exploration
 GEOTECHNICAL - ENVIRONMENTAL
SBFCA - Feather River - Yuba City, CA
Drilled and sampled 50ea borings to 130ft. All borings were drilled from the levee crest using rotary wash methods through gravels, cobbles and dense sands. Continuous 5ft long punch cores were taken from 100ft -130ft. All borings were grout back-filled at the completion of exploration. 


Geo-Ex performs a wide range of projects including roadways borings, drilling through levees, dams, limited access and much more. 

Here are a few projects that were completed within the last six months:
AC Transit Project - Oakland - San Leandro, CA
Drilled and sampled 40ea borings to 30ft using hollow-stem augers. Coordination of traffic control and USA was challenging on this project.
Mussel Rock Landfill - Daly City, CA
Drilled and sampled 15ea borings ranging from 30ft-120ft using hollow-stem augers. Installed and developed one 2" monitoring well to 55ft. Soil cuttings were placed in a 10 yard bin and hauled off site. 

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Clients:

  • URS Oakland (AECOM)
  • URS Sacramento (AECOM)
  • Parish Consultants
  • USACE (5-Year IDIQ)
  • ENGEO
  • AGS Inc.
  • Ninyo & Moore
  • MGE 
  • GEOCON
  • Crawford and Associates
  • CALTRANS
Delta Well Installation - Rio Vista, CA
Installed 30ea monitoring wells ranging from 15ft-45ft using hollow-stem augers. Developed by surge and pump methods. Each well was finished with flush-mounted well boxes