2009-12-21_REVISION - M1980244 ‎(30)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 12/21/2009
• Doc Name: QA Liner Recert- App. E, Technical Specifications
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

3.03 WASTE REMOVAL:
Waste material is defined as material too wet, too dry, frozen or containing ice or snow, containing organic or
other deleterious matter, having poor characteristics of grading or compaction, having other characteristics that
may result in undesirable settlement or other movement of the fill, or within the fill, or otherwise not meeting
the requirements of the SPECIFICATIONS, provided that this definition permits drying, water, and any other
processing or reprocessing to make the material stable and suitable prior to incorporating it into the fill as
permitted in the SPECIFICATIONS or by the MANAGER and CERTIFYING ENGINEER.
A. CONTRACTOR shall excavate and remove waste in a manner that will minimize contamination
with other soil horizons.
B. CONTRACTOR shall stockpile removed waste at locations designated by MANAGER.
3.04 EXCAVATION:
A. CONTRACTOR shall perform excavation to the lines and grades shown on the DRAWINGS or as
directed by MANAGER. No excavation shall begin until the CONTRACTOR has provided
construction staking for the proposed work.
B. CONTRACTOR shall prevent the disturbance of surrounding areas during excavation. Where
selective excavations are required to obtain materials for Structural Fill and Select Structural Fill, the
material removed from the excavations shall be taken directly to the fill areas or, if required,
stockpiled by material types. The stockpiles shall be approved by MANAGER.
C. CONTRACTOR shall grade all excavations to ensure grades are maintained to provide adequate
drainage at all times. Work shall be suspended by CONTRACTOR when, in the opinion of
MANAGER and CERTIFYING ENGINEER, the site is overly wet, muddy, or otherwise
unsuitable for proper maintenance, until directed otherwise by MANAGER, at no cost to CC &V.
D. In excavations where Structural Fill or Select Structural Fill is to be placed on slopes steeper than
3H: IV, horizontal benches shall be excavated into the slope to allow fill to be placed in horizontal
lifts. The CONTRACTOR shall continuously bench and key embankment material into the existing
material a minimum of 2 feet.
E. The CONTRACTOR will be responsible for the safety of temporary construction slopes.
CONTRACTOR shall inspect all temporary and permanent open -cut excavations on a regular basis
for signs of instability. Should signs of instability be noted, CONTRACTOR shall immediately
undertake remedial measures and shall notify MANAGER immediately. Permanent cut slopes shall
be left in smooth, safe, and stable condition at the end of the workday.
F. CONTRACTOR shall final grade excavations within the valley leach facility to establish positive
drainage to the Pregnant Solution Storage Area. In no case will depressions or bowls be permitted in
the valley leach facility area.
G. CONTRACTOR shall conduct all excavation and shoring operations in compliance with applicable
MSHA, Colorado State and Federal government laws and regulations.
3.05 SUBGRADE:
A. The MANAGER and CERTIFYING ENGINEER will inspect and approve the exposed subgrade
prior to any fill or Soil Liner being placed. CQA Monitor will confirm that the surface of the
Section 02200 Page 6 of 18 September 3, 2008
Earthworks Revision 1
SAProjects \1125E CCV CQA \I - Tech Specs \02200.rt.doc