Geotechnical Drilling and Field Exploration Services

This subcontract for Geotechnical Drilling and Field Exploration Services involves performing subsurface exploration and sampling for prime contractors on projects managed by the Los Angeles County Department of Public Works. The scope of work requires the use of various drilling methods, including Sonic, Auger, Rotary, Direct Push, and Coring, as well as specialized services such as downhole logging and Cone Penetration Testing. The selected provider is responsible for delivering field logs, samples, and completed test pits or boreholes while maintaining strict compliance with California Code of Regulations and OSHA Construction Industry Standards. The project is based in Alhambra, California, and falls under NAICS code 238910. Interested parties must submit their responses by the deadline of November 10, 2026.