C153705 Feasibility Study

• Contract/PO #: C153705
• Contractor Name: Beaver Reservoir Company
• Contract Type: Loan
• Water District: 59
• County: Gunnison
• Bill Number: SB 94-029
• Loan Projects - Doc Type: Feasibility Study

I
I
.
~

I
I
'-

I
I
I
I
I
I
I
I

\

I
I
I
I
I
I

'"
-> -'''',

6.0
FIELD INVESTIGATIONS

6.1 GENERAL

A geotechnical investigation of the dam and foundation was conducted in July and
October of 1992 for collection of data to be used in this feasibility study. The
investigation consisted of drilling and sampling of, four test holes; installation of four
,
standpipe piezometers, collection of self-potential (SP) geophysical data along five
transects and geotechnical laboratory testing of selected samples. The investigation
program is described in the February 4, 1993 wee report titled "Geotechnical
Investigation, Beaver Reservoir Dam" (Wee, 1993). A copy of this report is included
in Appendix E for reference.

6.2 SCOPE OF WORK

'.
The scope of our field and laboratory investigations included:

1. Contract a drill rig and supervise the drilling, sampling, and logging of four
test holes.

"
2. Perfor'in ,laboratory tests on selected soil samples recovered from the
drilling-to assist' in the classification and evaluation of the soil and
bei:lrock. '

3. ',I;'erform a geophysical survey using the self-potential (SP) technique.

4. Revie~ existing geologic data, along with data gathered III our
investigation, to develop a geologic model of the dam area.

5. Evaluate the results of our field program in light of the existing conditions
at the reservoir.

23067/Rl.6 09-03-93(3:21pm)/RPT

6-1