Geotechnical Drilling and In-Situ Testing

This subcontract for Geotechnical Drilling and In-Situ Testing supports Caltrans District 5 drainage system projects in the San Luis Obispo and Santa Barbara areas. The contractor is responsible for performing field exploration and subsurface sampling, which includes drilling vertical soil borings, conducting Standard Penetration Tests for in-situ soil analysis, and collecting samples for laboratory classification. All work must be performed in accordance with Class 6 categorical exemption measures to ensure the avoidance and minimization of biological resource impacts. The primary deliverables for this engagement consist of the collected soil samples and detailed field logs documenting boring depths and testing results. This project falls under NAICS code 238910 and is managed by the California Department of Transportation.