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Sites Reservoir

3520 Royal Wolf Way
Bozeman, MT 59718

(406) 586-1995

(406) 586-3530

Sites Reservoir Project - Dams and Roads

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Sites Authority

Maxwell, Colusa County, CA

09/23/2026 at 05:00

Geotechnical investigation that consists of obtaining samples from four (4) bore holes at three (3) locations along the right abutment of the future Golden Gate Dam facility.

Geotechnical drilling consisting of:
- Completion of four (4) rotary-wash core borings ranging from 100 to 289 feet in depth. The drilling subcontractor is to provide the following associated with each core location.
o Two (2) bore holes are 100 feet deep each, one (1) bore hole is 250-feet deep, and one (1) bore hole is 289-feet deep
o Core size HQ 2.5-inch diameter
o Driller provides wooden core boxes for core samples
o Single stage packer testing at 20-foot intervals (4 of 4 locations)
o Televiewer measurements (4 of 4 locations)
o OYO suspension P-S logging (1 of 4 locations)
o Grouted Vibrating Wire Piezometer (2 of 4 locations)