Guide SpecificationsSection 334713.13

28 October 2015ENVIRO LINER 6140 TEXTURED GEOMEMBRANE

Environmental ContainmentPage 1

Part 1General

1.1SECTION INCLUDES

.1Enviro Liner 6140textured geomembrane

1.2RELATED SECTIONS

.1Section 31 22 13 - Rough Grading

.2Section 31 23 23 – Backfilling

.3Section 33 42 13 – Pipe Culverts

.4Section 017810: Warranties.

1.3REFERENCES

.1ASTM D638 – Test Method for Tensile Properties of Plastics

.2ASTM D792 – Test Methods for Density and Specific Gravity of Plastics by Displacement

.3ASTM D814 - Standard Test Method for Rubber Property- Vapor Transmission of Volatile Liquids

.4ASTM D1434- Standard Test Method for Determining Gas Permeability Characteristics of Plastic Film and Sheeting

.5ASTM D1505 – Test Method for Density of Plastics by the Density-Gradient Technique

.6ASTM D4218 – Standard Test Method for Determination of Carbon Black Content in Polyethylene Compounds by the Muffle-Furnace Technique

.7ASTM D4329 – Practice for Fluorescent UV Exposure of Plastics

.8ASTM D4437 - Standard Practice for Determining the Integrity of Field Seams Used in Joining Flexible Polymeric Sheet Geomembranes

.9ASTM D4533 – Standard Test Method for Trapezoidal Tearing Strength

.10ASTM D4759 – Standard Practice for Determining the Specification Conformance of Geosynthetics

.11ASTM D4833 – Standard Test Method for Index Puncture Resistance of Geotextiles, Geomembranes, and Related Products

.12ASTM D5199 – Standard Test Method for Measuring the Nominal Thickness of Geosynthetics

.13ASTM D5397 – Standard Test Method for Evaluation of Stress Crack Resistance of Polyolefin Geomembrane Using Notched Constant Tensile Load Test

.14ASTM D5596 – Standard Test Method for Microscopic Evaluation of the Dispersion of Carbon Black in Polyolefin Geosynthetics

.15ASTM D5641 – Standard Practice for Geomembrane Seam Evaluation by Vacuum Chamber

.16ASTM D5820 – Standard Practice for Pressurized Air Channel Evaluation of Dual Seamed Geomembranes

.17ASTM D5885 – Standard Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by High Pressure Differential Scanning Calorimetry

.18ASTM 5994 Standard Test Method for Measuring Core Thickness of Textured Geomembranes

.19ASTM D6370 – Standard Test Method for Rubber – Compositional Analysis by Thermogravimetry (TGA)

.20ASTM D6392 – Test Method for Determining the Integrity of Non-Reinforced Geomembrane Seams Produced Using Thermo-Fusion Methods

.21ASTM D6497- Standard Guide for Mechanical Attachment of Geomembrane to Penetrations or Structures.

.22ASTM D6693 - Standard Test Method for Determining Tensile Properties of Nonreinforced Polyethylene and Nonreinforced Flexible Polypropylene Geomembranes

.23ASTM D7466 Standard Test Method for Measuring Asperity Height of Textured Geomembranes

.24ASTM D7865 – Standard Guide for Identification, Packaging, Handling, Storage, and Deployment of Fabricated Geomembrane Panels

.25ASTM D7982 – Standard Practice for Testing of Factory Thermo-Fusion Seams for Fabricated Geomembrane Panels

1.4SUBMITTALS

.1Section 01 33 00; Submission Procedures

.2Product Data:

.1Provide specification sheets for geomembrane
.2Provide mill test reports for geomembrane roll stock used to make liner
.3Provide shop test reports for each fabricated panel produced
.4Provide field test reports for all welds completed in the field

1.5QUALITY ASSURANCE

.1Geomembrane manufacturer to have a registered Quality Management System that meets the requirements of ISO 9001.

.2Fabricator to have a registered Quality Management System meeting the requirements of ISO 9001 or follow ISO 9001 compliant procedures.

.3Installer to follow documented installation plan and work procedures.

1.6WARRANTY

.1Section 017810: Warranties

.2Provide a manufacturer’s pro-rated weathering warranty

.1Twenty five (25) years for black-surfaced geomembrane in manufacturer’s approved exposed applications
.2Twenty five (25) years for black or white surfaced geomembranes in manufacturer’s approved backfilled applications
.3Fifteen (15) years for white-surfaced geomembrane in manufacturer’s approved exposed applications

Part 2Products

2.1MANUFACTURERS

.1Enviro Liner® 6140 as manufactured by Layfield

2.2NOMENCLATURE

2.3MATERIALS

.1Geomembrane:

.1Geomembrane material Enviro Liner 6140
.2Surface: One- side textured with black top and black bottom surfaces
.3Edge Construction: 4" (100 mm) wide edge with reduced asperity to improve welding properties
.1NOTE: a smooth edge is not available in the United States
.4Minimum Average Thickness (ASTM D 5994):0.96mm (38 mil; 0.038 inches)
.1Lowest individual for 8 out of 10 values -10%
.2Lowest individual for any of the 10 values -15%
.5Asperity Height (ASTM D7466): 0.40 mm (16 mil)
.18 of 10 values must be 0.35 mm
.2Lowest of any individual reading is 0.30 mm
.6Maximum Membrane Density (ASTM D792 or ASTM D1505): ≤0.939 g/cc.
.7Minimum Tensile Properties (ASTM D6693): Machine direction and perpendicular to machine direction average values on the basis of five (5) test specimens each direction:
.1Break Strength: 11kN/m (60 lb/in).
.2Break Elongation: 250%.
.8Minimum Tear Resistance (ASTM D1004): 100 N( 22 lb).

.9Minimum Puncture Resistance (ASTM D4833):200N (44lb).

.10Total Pigment Content: >2.0%

.1Includes both carbon black and white pigments (when present)
.2Measured by Carbon Black content test ASTM D6370 (or D4218)

.11Carbon Black Dispersion (ASTM D5596):

.1Measured on black layers only
.2Carbon Black dispersion for 10 different views:
.3Minimum nine views in categories 1 or 2 and 1 view in Category 3.

.12High Pressure Oxidative Induction Time (ASTM D5885):

.1Minimum 2000 minutes.

.13Stress Crack Resistance under Constant Load (ASTM D5397):

.1Smooth sample tested
.2Minimum 1000 hours.

.14UV Resistance (ASTM D 4329):

.1Minimum 90% strength retained after 30,000 hours testing
.1Testing performed on 0.75mm (30 mil) smooth specimen

.2Irradiance of 0.90 w/m2 at a wavelength of 310 nm

.3Alternating 10 hour UV cycles at 60C followed by 2 hour condensation cycles at 50C

.15Seam Properties (Shop and Field Seams ASTM D6392):

.1Shear Strength: 10.5 kN/m (60lb/in).

.2Wedge Welded Peel Strength: 8.8 kN/m(50 lb/in)

.3Extrusion Welded Peel Strength: 7.7 kN/m (44lb/in)

Part 3Execution

3.1FABRICATION

.1Set Up

.1Carefully transfer rolls of geomembrane from storage to unwinding rack.

.2The floor or table must be clean, dry, and free of foreign objects that could damage the liner.

.3Pull panels to specified length, after double-checking dimensions on the work order.

.4Ensure seaming equipment is in good repair and functioning properly. Ensure equipment is adjusted to the material.

.5Follow documented welding procedures.

.2Qualification Seams

.1Prepare and test qualification seams at the frequency required in ASTM D7982

.2The qualification seam must be run using the same material and equipment that will be used for fabrication.

.3Machine conditions and operator used for fabrication must be the same as those used for the qualification weld.

.4Qualification seam must be tested in shear and peel and meet the specified requirements for the material as stated in the materials section.

.5A qualification seam must be rerun whenever the operator is changed, the equipment adjusted, shift changed, or if the equipment is idle for more than 2 hours.

.3Fabrication Seams

.1Fabrication seams must meet the specified requirements in peel and shear for the material.

.2Fabrication seams will be destructively tested in shear and peel according to ASTM D6392.

.1Remove fabrication seam samples from the end of a seam to prevent damage to the main seam

.2Test one specimen each in peel and shear on the first and last welded panel, and,

.3Test one specimen each in peel and shear for every 300 lineal meters (1000 lineal feet) of welding

.3A record of the seam test results is maintained on the Shop QC report.

.4The seaming process must be constantly supervised by the equipment operator. 100 % of the fabrication seams must be visually inspected during seaming.

.4Packaging

.1Package, mark, and handle panels in accordance with ASTM D7865

.2Each panel will be accordion folded in one direction, and rolled or folded in the other direction.

.3Wrap completed panels in a weather resistant, opaque cover material.

.4Hold wrapper securely in place using UV resistant tape or other secure method.

.5Label the packaged liner to in accordance with ASTM D7865.

3.2DELIVERY STORAGE AND PROTECTION

.1Shipping

.1Completed panels will be placed on clean, serviceable pallets, free from exposed nails or other obstructions.

.2A layer of geomembrane, geotextile, or wood will be placed on all pallets to protect the panel from damage.

.3Secure panels to the pallet using metal or plastic bands. Use a layer of geomembrane between the packaged liner and the band to prevent damage to the liner as the band is tightened.

.4Carefully handle and place on the truck to avoid damage to the liner.

.5Panels may be stacked not more than two high.

.2Delivery

.1All panels will be inspected for damage on delivery.

.2Use suitable unloading equipment to handle panels. Do not drag, slide, or drop panels during unloading.

.3Place panels in a prepared area away from soft ground, standing water, or other deleterious surfaces.

.4Replace any pallets that may become damaged during shipping or handling.

.5Store liner panels in a secure area protected from extremes of heat or cold.

.6Protect panels from damage prior to use.

3.3ACCESSORIES

.1Welding Rod will be manufactured from the same formulation as the geomembrane.

.2Preformed Pipe Boots will be vacuum formed from thicker sheet material manufactured from the same formulation as the geomembrane.

3.4INSTALLER

.1The Geomembrane Installer shall have at least three years experience in the installation of the geomembrane. The Geomembrane Installer shall have installed at least 500,000 m2 (5,000,000 ft2) geomembrane during the last three years.

.2Geomembrane Installer shall be certified by the geomembrane manufacturer and follow manufacturer’s installation specifications.

3.5PREPARATION

.1Ensure subgrade is compacted and surface finished to not impair installed membrane.

.2Subgrade to provide firm, unyielding surface with no sharp changes or abrupt breaks in grade. A smooth drum rolled surface is preferable.

.3Ensure surfaces to be lined are smooth, free of foreign and organic material, sharp objects, or debris of any kind.

.4If a suitable sub-grade is not available then a cushion layer of 100mm (4 inches) of clean sand and/or an LP8 nonwoven geotextile shall be placed prior to liner placement.

.5Excavate anchor trench to line, grade, and width indicated on drawings, prior to liner placement. Provide slightly rounded corners in the trench to avoid sharp bends in the geomembrane.

.6Prepare mechanical attachments according to ASTM D6497 Standard Guide for Mechanical Attachment of Geomembrane to Penetrations or Structures.

.7All concrete surfaces to which the liner will attach shall have “smooth trowel” finish. All the corners should have radius to a minimum 25mm (1 inch) as per the drawing.

.8Compaction at pipe penetrations and areas of mechanical attachment will be inspected carefully as these are areas where differential settlement can occur.

.9A certificate of subgrade acceptance will be prepared by the liner installation contractor prior to liner installation.

3.6INSTALLATION

.1Installation of the geomembrane shall be performed in a logical sequence.

.2Place panels according to the drawings, the panel layout, and the label on each panel.

.3Sufficient thermal slack shall be incorporated during placement to ensure that harmful stresses do not occur in service.

.4Weather Conditions at Time of Installation:

.1Site welding may proceed at any temperature providing a suitable qualification weld can be prepared at site conditions using the operator, equipment, and materials intended for the project.

.2Installation of membrane in winds above 20 km/h (12 mph) can proceed only if the installer can demonstrate that the liner will not be at risk of damage.

.3Do not install membrane during precipitation or in the presence of excessive moisture.

.4Do not install in weather conditions that may be detrimental to the function of the membrane.

.5Ensure personnel working on geomembrane do not use damaging footwear.

.6Protect completed panels from damage; handle carefully to avoid damaging the liner.

.7Equipment and methods used to unroll liner panels should not damage the prepared subgrade.

.8Ballast used to prevent uplift by wind must not damage the geomembrane. A continuous load is recommended along the edges of panels to eliminate the risk of wind uplift.

.9Qualification Seams

.1A qualification seam will be run prior to any field seams.

.2A qualification seam is made with separate pieces of geomembrane using the same material and equipment that will be used for production welding.

.3Machine conditions, and operator used for welding must be the same as those used for the qualification weld.

.4Qualification seam must be tested in shear and peel, and meet the specified requirements for the material as stated in the materials section.

.5A qualification seam must be rerun whenever the operator is changed, the equipment adjusted, or at least every 4 hours.

.10Field Seams

.1Field seams will be sampled for testing in a way that does not compromise the installed liner

.1One sample to be tested for every 150m (500 ft) of field seam

.2Test samples are to be removed from the ends of seams, from the anchor trench, or other location that does not introduce a defect into the liner.

.3Samples to be approximately 100 mm (4 inches) long to permit testing of one shear and two peel specimens (ASTM D6392).

.4Test samples immediately after seaming

.5Record date, location and pass/fail description

.2Field seams must meet the specified requirements in peel and shear for the material.

.3A written record will be maintained for all field seam tests.

.4All completed field seams will be 100% non-destructively tested using an air lance test (ASTM D4437 method 7.2) or a dual-seam air pressure test (ASTM D5820) as applicable.

3.7TOLERANCES

.1Seam Destructive Tests:

.1Follow the procedure in ASTM D6392

.2Test three specimens per sampling point, one in shear and two in peel.

.1All specimens to meet seam strength requirements

.3Procedures for Destructive Test Failure:

.1Cut out seam and re-weld; or,

.2Retrace welding path to 3 m (10 feet) from location of failed test. Take sample for additional test. If passed - cap strip or extrusion weld between failed location and original failed location.

3.8REPAIR

.1Inspect seams and non-seam areas for defects, holes, blisters, undispersed raw materials.

.2Identify any sign of foreign matter contamination.

.3Repair all through-thickness defects.

.4Defective Seams: Cap strip or replace.

.5Small Holes: Repair by extrusion welding using a bead of extruded material over hole. Patch if hole is larger than 6 mm (1/4 inch).

.6Tears: Patch and seal round sharp ends of tears on slope or stressed area prior to patching.

.7Repair blisters, large cuts and undispersed raw materials with patch.

.8Secure Patches by Extrusion Welding, Hot Air Welding, or with the Enviro Liner Welding Gun:

.1Extrusion welding.

.1Clean area to be patched.

.2Tack patch in place with hot air welding or with double sided tape.

.3Prepare patch area by roughening with a wire brush or by grinding

.4Extrude all the way around patch.

.5More than one extrusion bead can be laid side-by-side on Enviro Liner 6000 materials. A maximum of three extrusion beads can be laid side-by side on Enviro Liner 6000.

.2Hot Air Welding

.1Hand hot air welding is permitted for patching Enviro Liner.

.2Clean area to be patched.

.3Hand-weld the patch with a hot air gun and suitable roller.

.3Enviro Liner Welding Gun

.1Use for small patches and repairs after the installation crew has left site

.2Clean area to be patched

.3Tack patch in place using the double sided tape supplied

.4Prepare patch area by roughening with a wire brush

.5Extrude a bead to secure the patch follow the Enviro Liner Welding Gun instructions

.9Patches: Round or oval, of same geomembrane. Extend minimum 75 mm (3 inches) beyond the edge of the defect.

.10Verification of Repairs: All repairs to be non-destructively tested using

.1Air Lance Test, ASTM D4437 Method 7.2, or,

.2Vacuum Box Test ASTM D5641

.11Redo failed repairs and re-test.

.12Keep records of all repairs and the results of repair testing.

3.9CLEANING

.1Section 017400.

.2Cleaning solvents shall not be used unless product is approved by membrane manufacturer.

.3Use water and rags for all cleaning. If soap is used for cleaning rinse with clean water and dry before welding.

3.10PROTECTION OF FINISHED WORK

.1Section 014500: Protecting installed work.

.2Protect finished Work from damage. See instructions on backfilling if applicable.

END OF SECTION