1997-07-14_REVISION - M1988112

• Permit No: M1988112
• IBM Index Class Name: Revision
• Doc Date: 7/14/1997
• Doc Name: TECHNICAL SPECIFICATIONS BATTLE MOUNTAIN RESOURCES SAN LUIS PROJECT
• Type & Sequence: AM1
• Media Type: D
• Archive: No

BATTLE MOUNTAIN RESOURCES Page 5-I
San Luis Project Te_hnical Speci ficalions
5.0 EXCAVATION AND GRADING
5.1 General
5.1.1 Scope of Work
The excavations to be perfornied include but are not limited to stripping and gru(~bing; removal
of topsoil; shaping; grading and required excavations for completion of berm cuts, spillways,
access roads, trenches and borrow areas.
The Contractor shall be solely responsible for determining the excavation potential of soil and
rock materials, water table conditions, and other pertinent subsurface information.
For excavations in rock, the Contractor shall submit a Rock Excavation Plan prior to initiation of
the work. This plan must fully describe the proposed manner of excavation, excavation
sequencing and procedures for finish cuts.
5.1.2 Handling of Materials
The Contractor shall use only the materials obtained from required excavations which meet
applicable Specifications, except as allowed by the Designer. Such materials miry be placed in
the designated final locations direct from the excavation, or may be placed in temporary
stockpiles and subsequently placed in the final location as approved by the Designer. The
Contractor shall perform excavation operations so as to facilitate stockpiling anc rehandling of
excavated material as required.
5.1.3 Cuts and Slopes
The Contractor shall inspect all temporary and permanent open-cut excavations on a regulaz basis
for signs of instability. All excavations shall be in accordance with current OSHP, requirements.
Should signs of instability be noted, the Contractor shall undertake remedial measures
immediately and shall notify the Designer as soon as possible. It will be the Contractor's
responsibility to remove all loose material from the excavation slopes and to maintain the slopes
in a safe and stable condition at all times during the progress of the work. Required procedures
may include pumping, bailing, draining, sheeting, and bracing.
Final spillway cut slopes shall be no steeper than 1H:1 V in rock materials, and 2H I V in all other
cuts unless otherwise approved by the Designer (vertical cuts may be allowed in rock). Final
surfaces shall be smoothed of irregularities to the satisfaction of the Designer. Final cu[ areas
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