1989-10-10_REVISION - M1988112 ‎(12)‎

• Permit No: M1988112
• IBM Index Class Name: Revision
• Doc Date: 10/10/1989
• Doc Name: GENERAL OPERATION INFORMATION
• Type & Sequence: AM1
• Media Type: D
• Archive: No

in Appendix A. The borings were developed as monitoring wells
• and well completion data is included in Appendix B. Upon
completion of well construction, a permeability test was
conducted in each boring to determine existing permeabilities.
BH-12 was tested using a standard pump test method, while the
remaining borings were tested using a falling head test.
Permeability test results are contained in Appendix C. The
wells will be incorporated into the ongoing monitoring as
discussed in Exhibit G.
•
The supplemental drilling penetrated the water table at
a depth of approximately 178 feet below the ground surface.
The pump test completed in the water bearing zone of the Santa
Fe Conglomerate, BH-12, demonstrated a permeabi lity of 9 X 10-
s cm/sec. The falling head tests were conducted in unsaturated
materials in the Santa Fe Conglomerate in BH-13 and BH-14. As
the material progresses from an unsaturated to saturated
condition the measured permeabilities decreased. The
permeabilities at the end of testing in BH-13 was measured as
6 X 10-~ cm/sec. In BH-14 the permeability was measured at 1.1
X 10-4 cm/sec. The falling head test completed in the
alluvial/colluvial soils, BH-15, showed a permeability greater
than 2.2 X 10-" cm/sec.
D.6.4 Tailings Characteristics
D.6.4.1 General
A sample of the tailings material from the San Luis ore
was generated at Battle Mountain Gold Company's Battle
Mountain, Nevada laboratory. The sample was processed at bench
scale using a simulated procedure similar to that described
for the milling operation in Section 0.5 of thi.~ report.

The tailings sample was tested for physical,
depositional, and geochemical characteristics. Summaries of
D-1u