_REVISION - M1980244 ‎(30)‎

• Permit No: M1980244
• IBM Index Class Name: Revision
• Doc Name: Appendix E
• From: Cripple Creek & Victor Gold
• To: DMG
• Type & Sequence: AM8
• Media Type: D
• Archive: No

9. If no bubbles appear aRer ten (10) seconds, close the vacuum valve and open the
bleed valve, move the box over the next adjoining area with a minimum three (3)
. inches overlap and repeat the process.
] 0. Alt areas where soap bubbles appeaz shall be marked and repaired and then retested.
11. Test locations, documentation number, date and tester will be indicated with an
indelible marker on the geomembrane for each repair or seam section. The color
code for indelible markers is to be determined at the pre-construction meetings, and
strictly adhered to.
C. The following nondestructive test procedures are applicable to fusion seaming and shall be
followed by CONTRACTOR.
1. Seal one end of the seam to be tested.
2. Insert needle or other approved pressure feed device through the sealed end of the
channel created by the double wedge fusion weld.
3. Energize the air pump to verify the unobstructed passage of air through the channel.
4. Seal the other end of the channel.
5. Energize the air pump to the pressure of approximately thirty (30) psi, close valve,
and sustain pressure for approximately five (5) minutes.
6. If loss of pressure exceeds three (3) psi, or pressure does not stabilize, locate faulty
area, repair and retest.
• 7. Remove needle or other approved pressure feed device.
8. Repair pressure test locations as described in Section 3.11.
9. Beginning and ending pressures and times, test locations, documentation number,
date and tester will be indicated with an indelible marker on the liner at each test
interval location.
D. The following procedures shall apply to locations where seams cannot be non-destructively
tested, as determined by CERTIFYING ENGINEER:
I. If the seam is accessible to testing equipment prior to final installation, the seam shall
be non-destructively tested prior to fmal 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 anon-destmctive test of a fusion
seam as outlined above, the CONTRACTOR shall perform the non-destructive testing over
smaller azeas 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:
Section 02776 Page 17 of 20 October 25, 2000
Geomembrane Golder Associates Revision 8
D:~PNASEIV PSSA CERMPPENDICIES~APPENDIX E TECHNICAL SPECIFICATIONS\993-209902)]61 R8 DOC