2011-11-19_REPORT - M1980244 ‎(5)‎

• Permit No: M1980244
• IBM Index Class Name: Report
• Doc Date: 11/19/2011
• Doc Name: FINAL REPORT, VOLUME 3 OF 3 2011 phase 5 valley leach facility ore storage 1 OF 2
• From: CC&V
• To: DRMS
• Media Type: D
• Archive: No

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SECTION 02200.0 EARTHWORKS
PART 1: GENERAL
1.01 SUMMARY:
This SPECIFICATION describes site preparation, excavation, stockpiling of soils for earthwork if necessary,
and placement of Structural Fill, Select Structural Fill, Coarse Shaft Backfill, Underdrain Fill, Low Volume
Solution Collection Fill, Bedding Fill, Leak Detection Fill, Soil Liner Fill, Drain Cover Fill, Fine Shaft
Backfill, Pipe Bedding Material, and Granular Filter Material for the valley leach facility.
1.02 RELATED SECTIONS:
Refer to the following Sections for related work:
■ Section 01050.0 - Staking and Construction Certification Documentation
■ Section 02776.0 - Geomembrane
• Section 02777.0 - Geotextile
1.03 TOLERANCES:
A. Limits of excavation, Structural Fill, Select Structural Fill, Coarse Shaft Backfill, Underdrain Fill,
Low Volume Solution Collection Fill, Bedding Fill, Leak Detection Fill, Soil Liner Fill, Drain Cover
Fill, Fine Shaft Backfill, Pipe Bedding Material, and Granular Filter Material for the valley leach
facility are defined by the lines and elevations shown on the DRAWINGS. All fill shall be placed to
the minimum thicknesses shown on the DRAWINGS.
B. Finished grades shown on the DRAWINGS are given in feet, and shall slope uniformly between given
spot and contour elevations, without sag or humps. All grades shall provide for natural runoff.
C. The Soil Liner Fill and Bedding Fill shall have a minimum thickness of 1.0 foot.
D. The Low Volume Solution Collection Fill will have a minimum thickness of 3.0 feet at all times, and
the Drain Cover fill will have a minimum thickness of 2.0 feet at all times.
E. Clearance of pipes with respect to regulated boundaries will be checked by MANAGER. If
clearances are inadequate, CONTRACTOR shall backfill trenches to compaction
SPECIFICATIONS and relocate trenches at CONTRACTOR's expense.
F. Correction of overexcavation and backfilling shall be to CONTRACTOR's account.
1.04 QUALITY ASSURANCE:
A. All work shall be monitored and tested in compliance with the requirements of the CQA Plan.
B. CONTRACTOR shall be aware of all testing activities outlined in the CQA Plan, and shall account
for these activities in the construction schedule.
C. All CQA soils testing (both field and laboratory testing) will be the responsibility of CERTIFYING
ENGINEER, as identified in the Earthworks CQA plan. CONTRACTOR shall be responsible for
Section 02200 Page 1 of 18 September 3, 2008
Earthworks Revision 1
PAPhase 5 OSA 2011 Cert Report\Appendices\Appendix E SpecificationsN02200.rl.doc