Description
The Oregon Department of Transportation is seeking a qualified contractor to perform geotechnical drilling, coring, sampling, and instrumentation at four landslide‑prone sites along US 26 and US 101. The work includes all equipment, water delivery, testing materials, safety and environmental compliance, and delivery of detailed geotechnical hole reports. The contract will be awarded on a fixed‑unit‑price basis and must be completed by 17 Nov 2027.
• Perform mud‑rotary drilling, 4‑in. hollow‑stem auger (HSA) drilling, and HQ3 wire‑line coring as required.
• Conduct SPT, Shelby‑tube sampling, install inclinometer tubes and vibrating‑wire piezometers, and submit certified geotechnical hole reports within 30 days of each borehole.
• Provide all required safety, spill‑control, and erosion‑control measures (per ODOT BMPs), including a Pollution Control Plan and weekly tailgate meetings.