2018-10-09_REPORT - M1980244 ‎(2)‎

• Permit No: M1980244
• IBM Index Class Name: Report
• Doc Date: 10/9/2018
• Doc Name Note: Review of Record Construction Report Part 1 of 2
• Doc Name: Construction Quality Assurance Report ‎(CQA)‎
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

Record of Construction Report,VLF2 Recertification Report ■.
' Subgrade and Geoembrane 9750'-9900'Elevations ■
Response to DRMS Comments
NewFields Job 475.0106.026
October 5,2018
' The passing extrusion trail seam RCTX-16 is the retest for the failed RCTX-15 test. The welding
machine was adjusted and retested after the failed test. An updated table has been included in
' this addendum in Attachment 2.
6. Appendix E.4 Geomembrane Fusion Welding Summary:As mentioned above, the text in
' section 5.1.5 indicated that destructive samples were to be collected at a rate of 500
linear feet of seam but this table reflects that was not done, please provide an
explanation as to why.
' Per the approved technical specification, 02776-0 Geomembrane", Contractor shall test a
pp p ,
' minimum of one destructive test per five hundred (500) feet of seam length..." Based on the
table presented in Appendix E.4, the average distance between each destructive test is
approximately 475'. This results in more tests than the frequency specified in the Technical
Specification.
7. Appendix E.6 Geomembrane Fusion Destructive Testing Summary:Please describe the
difference between the two columns titled Peel Strength.
During destructive testing of a fusion welded seam, both sides of each of the five test coupons
are tested for Peel Strength. The two columns titled "Peel Strength" on Appendix E.6
Geomembrane Destructive Testing Summary are used to log the test result values.
' 8. Appendix E.6 Geomembrane Fusion Destructive Testing Summary: Under the column
titled Shear Strength there are numerous samples that fail the indicated minimum value
of 130 ppi but are marked as passing tests, please explain. If the minimum value shown
is incorrect, please revise the table to reflect the correct value and check the table for
completeness and accuracy(there is a misspelled word in title).
' Per Table 2.01, Typical Properties, of the approved technical specification, 02776-0
Geomembrane", the minimum shear strength for a field seams on textured 80 mil LLDPE is 120
' ppi, not 130ppi as indicated in the table in Appendix E.6. The table has been corrected and
included in this addendum in Attachment 3.
' 9. Appendix E.6 Geomembrane Extrusion Destructive Testing Summary: There are two
superscripts shown on the table.
The superscript and notes in the footer on the Table included in Appendix E.7 Geomembrane
Extrusion Destructive Testing Summary, have been removed and the corrected table is included
' in this addendum in Attachment 4.
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