2014-02-07_REPORT - M1980244 ‎(8)‎

• Permit No: M1980244
• IBM Index Class Name: Report
• Doc Date: 2/7/2014
• Doc Name: Final Report QA Monitoring and testing volume 2 of 2 document 1 of 3Mill Site Earth works
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

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7. Take necessary precautions to prevent damage to the underlying subgrade during placement
of the geotextile.
8. During placement of geotextiles, care shall be taken not to entrap, in or beneath the
geotextile, stones, excessive dust, or moisture that could damage the underlying or
overlying geomembrane,cause clogging of drains or filters,or hamper subsequent seaming.
9. Following the installation of all geotextile, an examination of the entire surface shall be
conducted to detect potentially harmful foreign objects. Any such foreign objects found
shall be removed or the panel shall be replaced by the CONTRACTOR, at no cost to
CC&V.
10. Geotextile panels shall not be deployed over frozen ground, unless approved by
CERTIFYING ENGINEER.
B. Seaming Procedures
1. On slopes steeper than ten (10)percent, and in all cases in which soil or granular materials
are to be placed over the geotextile, all seams shall be continuously sewn. In all other
applications,sewing is the preferred seaming method.
2. Seams to be sewn shall be overlapped a minimum of six(6)inches and shall be sewn with a
locking stitch. Seams to be thermally bonded shall be overlapped a minimum of twelve
(12)inches.
3. The thread used in sewing shall be of polymeric material having chemical resistance,and if
the geotextile is to be exposed for more than thirty (30)days,ultraviolet resistance equal to
or exceeding that of the geotextile.
4. CONTRACTOR shall take measures to prevent soil, granular materials, or foreign
materials from entering or becoming trapped beneath the geotextile both during and
following installation.
C. Defects and Repairs
Repair holes or tears in geotextile as follows:
1. Remove any soil or other material that may have penetrated the torn geotextile.
2. Should any tear exceed 10 percent of the width of the roll, that section of the roll shall be
removed from the slope and replaced.
3. On slopes steeper than 10:1 (horizontal:vertical), sew into place,in accordance with Article
3.01(B)of this Section,a patch made from same geotextile. Use continuous sewing.
4. On slopes shallower than 10:1 (horizontal:vertical), sew geotextile patch into place using
continuous (preferred) or spot seam in place a patch made from same geotextile, with a
minimum 24-inch overlap in all directions.
***END OF SECTION***
Section 02777 Page 5 of 5 May 9,2012
Geotextile Revision 1