B. The Installation Contractor is responsible for providing and operating an on-
site tensiometer and corresponding sample cutting equipment to perform all
trial and field seam testing.
C. Trial seams shall be produced under the same physical conditions as
production seaming.
D. Trial seam sample testing:
1. Trial seams shall be a minimum of 5 feet long and 12 inches wide
(perpendicular to the seam).
the panels to be seamed shall not damage the Geomembrane or adversely
affect the seaming operation. The top Geomembrane of the seam overlap shall
be beveled and the extrusion apparatus shall be purged of heat-degraded
extrudite before seaming.
M. Placement of soil shall not occur on Geomembrane that is under stress due to
thermal contraction or other causes, or that has large winkles that may fold
over and crimp, or when the ambient air temperature, measured 6-inches
above the Geomembrane, is greater than 104°F or lower than 40°F without
prior approval of ENGINEER. Panels under tensile stress due to thermal
contraction or any other cause shall be cut and a patch shall be placed to
provide compensation for Gcomembrane contraction. Equipment shall not be
The Installation Contractor will direct any remedial work required to bring the
surface into compliance with the Specifications required for Geomembrane
installation. Upon satisfactory surface preparation, the Installation Contractor
and the CQA Consultant will issue a letter to OWNER indicating acceptance of
the subgrade.
Geomembrane rolls shall be handled with appropriate equipment to prevent
damaging or stressing of the Gcomembrane. Loading and unloading shall be
performed using equipment such as spreader bars and cloth chokers.
Deployment shall be performed using equipment such as roll bars and vise-
grip pliers designed to handle sheet materials. Any damaged Geomembrane
shall be repaired or replaced immediately, at the discretion of the CQA
Consultant, and at no cost to OWNER.
the same formulation as being used for the textured sheet materials. The yield stress used to
calculate the applied load for the test should be the manufacturer's mean value obtained from
the manufacturer’s quality control testing of the same sample.
Carbon black dispersion (only near spherical agglomerates) for 10 different views:
* Qin Categories 1 or 2; and
*® lin Category 3.
PART 2 - PRODUCTS
2.1 GEOMEMBRANE
A. Membrane Resin Specifications
1. Geomembrane shall be from first-quality resin containing no recycled
polymer (product run may be recycled). The resin shall be the same for
the Geomembrane and the extrudite rod or bead and shall meet the
following specifications:
Property Test Method Value
ASTM D1238 ;
Melt Index Condition 190/2.16 <1.0 grams (g)/10 min.
Specific Gravity ASTM D4883 0.94 g/cm3
F. The manufacturer shall furnish complete written instructions for storage,
handling, installation, seaming, repair, and inspection of the Geomembrane
material in compliance with this Specification and conforming to the conditions
of the warranty. A copy of all manufacturer’s literature shall be submitted to
the CQA Consultant upon request.
1.5 PROJECT MEETINGS
During the course of the work, the Installation Contractor shall maintain as-
built drawings showing, but not limited to, panel layout and identification,
seam type and identification, repair locations and identifications, and
destructive test sample locations and identification. The Installation
Contractor shall submit working copies of the as-built drawings to the CQA
Consultant upon request, and shall submit a final copy to ENGINEER prior to
moving off the site.
1.4 QUALIFICATIONS OF INSTALLATION CONTRACTOR AND MANUFACTURER
A.
personnel training; performing QC testing during Geomembrane installation;
and maintaining records documenting QC items, such as, as-built panel layout,
locations and identifications of all repairs, locations and results of all
destructive and non-destructive field tests, as specified herein.
G. Subgrade Surface: The soil surface that immediately underlies geosynthetic
material.
1.3. SUBMITTALS
A. CONTRACTOR shall submit with the Bid for the Work the following
