2009-12-21_REVISION - M1980244 ‎(32)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 12/21/2009
• Doc Name: QA Liner Recert- App. E, Tech Specs. 2
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

amec
D. The following procedures shall apply to locations where seams cannot be non - destructively tested,
as determined by CERTIFYING ENGINEER:
1. If the seam is accessible to testing equipment prior to final installation, the seam shall be
non - destructively tested prior to final installation.
2. If the seam cannot be tested prior to final installation, the seaming operations shall be
observed by CQA Monitor for uniformity and completeness.
E. In the event that seam continuity cannot be demonstrated for a non - destructive test of a fusion
seam as outlined above, the CONTRACTOR shall perform the non - destructive testing over
smaller areas as a means of defining the questionable area, and shall:
Extrusion weld the outside edge of the questionable seam area and vacuum box test the
extrusion weld; or,
2. Cap the questionable area and vacuum test the cap.
3.09 DESTRUCTIVE TESTING
A. CONTRACTOR shall test a minimum of one destructive test sample per five hundred (500) feet
of seam length from a location specified by CERTIFYING ENGINEER. CONTRACTOR shall
not be informed in advance of the sample location. The samples shall be taken centered over the
seam and prioritized as follows:
1. A minimum of one sample per day;
2. All areas identified as suspect during seaming, non - destructive testing/monitoring, and in
unusual working conditions.
3. A minimum of one sample for each geomembrane seamer.
4. A minimum of one sample every five hundred (500) feet of seaming.
B. Samples shall be cut by CONTRACTOR as the seaming progresses. Sampling locations shall be
determined by CERTIFYING ENGINEER. CQA Monitor must witness the obtainment of all
destructive test samples by CONTRACTOR. CONTRACTOR shall mark all samples with their
seam number, date, welding machine number, welding technician identification, extruder and
nozzle /wedge temperature, and ambient air temperature. CONTRACTOR shall document the
date, time, roll and seam number, ambient temperature, and pass or fail description. All holes in
the geomembrane resulting from obtaining the seam samples shall be immediately repaired. All
patches shall be vacuum tested.
C. The samples shall be a minimum twelve (12) inches wide by twenty -four (24) inches long with the
seam centered lengthwise. The sample shall be cut into two equal length pieces, half to be given to
CC &V and the other half kept by CONTRACTOR.
D. CONTRACTOR shall cut and test ten (10) one (1) inch wide specimens from his sample. All
testing shall be conducted at room temperature (60° F - 80° F) CONTRACTOR shall test five (5)
specimens for seam shear strength and five (5) for peel strength. Both inside and outside tracks of
fusion seams will be tested for peel strength. To be acceptable, four (4) out of the five (5)
specimens must pass according to criteria established in Article 2.01. Any specimen that fails
Section 02776 Page 19 of 22 September 3, 2008
Geomembrane Revision 1
SAProjects \1125E CCV CQA \I - Tech Specs \02776.0.doc