2009-07-15_REVISION - M1980244 ‎(23)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 7/15/2009
• Doc Name: QA Mon. & Test Results Load Out- Bin Location
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

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Cripple Creek & Victor Gold Mining Company
Cresson Project
Quality Assurance Monitoring and Test Results
Load Out Bin Relocation
July 7, 2009
ameO
AMEC recorded observations made during seaming. For the lower geomembrane layer, the
fusion-welding summary is presented in Appendix J-3, and the extrusion-welding summary is
presented in Appendix J-4.
6.1.4 Defect and Repair Observations
AMEC inspected geomembrane panels for damage that may have occurred during
manufacture, transport, deployment, or installation as discussed in Section 5. AMEC repeatedly
observed all panels and seams for defects until Ames covered the geomembrane with DCF.
AMEC documented defects by assigning a unique defect identification code to each defect, and
marking each defect code on the geomembrane. The summaries of defects, repairs, and
non-destructive testing of repairs, including the approximate locations of each repair are
presented in Appendix J-5.
6.1.5 Destructive Testing
AMEC selected destructive test locations based on Lonestar's completion of geomembrane
welding, various working conditions, and on seaming observations (e.g., suspicion of a defective
weld). Lonestar obtained and tested 6 fusion seam destructive samples and 2 extrusion seam
destructive samples during the installation of the geomembrane in the LOB.
Lonestar constructed approximately 2,876 lineal feet of fusion welded seams and 113 lineal feet
of extrusion welded seams on the LOB geomembrane. The specified frequency of destructive
testing was one test per 500 lineal feet of weld. AMEC identified and Lonestar obtained
destructive samples from the geomembrane panel seams at a frequency of one destructive test
sample per 480 lineal feet of fusion welded seams, and one per 57 lineal feet of extrusion
welded seams. The test frequencies exceeded project requirements.
Field destructive testing of seams consisted of testing ten 1-inch wide coupons, five of which
were tested for peel, and five of which were tested for shear. Lonestar tested the inside and
outside tracks of the fusion welds for peel. Lonestar performed all destructive tests on-site
using a field tensiometer, and AMEC observed and documented all tests.
The specified acceptance criteria for 80-mil smooth and 100-mil single sided texture LLDPE
shear tests was that four of the five coupons tested must have an ultimate strength of at least
120 and 130 pounds (respectively) per pulling inch (ppi) prior to yield. The specified acceptance
criteria for peel tests was that four of the five coupons tested must have ultimate strength of at
• least 100 ppi and achieve a Film Tear Bond (FTB) upon breaking. All destructive fusion seam
and extrusion seam samples met specifications.
S1PROJECTS\1125E CCV CQA\H3 - CONSTRUCTION\LOB CERT REPORT\REPORT BODY\LOB CERT REPORT 2009.07.07.DOC 21