1.) For accurate measurements measure your ponds widest width, longest length and deepest depth (in feet). Enter those dimensions in the boxes provided.

2.) Every pond should have an anchor trench to prevent the liner from sliding down the slope and into the pond. We recommend no less than a 12" wide and 12" deep anchor trench. The deeper the pond the larger the anchor trench.

3.) All liners have some degree of expansion and contraction as the ambient temperature changes from summer to winter and back to summer. Therefore, liners must be installed with some slack ripples. A liner that is installed tight without these slack ripples can trampoline in the base and corners- in turn creating a liner failure. A liner installed in a colder climate or at a cooler time of day will require more slack ripples. We recommend adding 1' to 3' to each side of your final measurement to accomodate for this requirement.

Overview

---

Geomembrane Coated Woven Polyethylene (CWPE)

---

Coated Woven Polyethylene (CWPE) is made from woven HDPE tapes known as “base fabric” or “scrim” which provide high tear strengths and puncture resistance. The HDPE scrim is coated on both sides with LDPE to provide flexible barriers to contain liquid. Standard products are three ply - that is 1 scrim layer with coating on top and bottom.

Standard ITL® CWPE

New ITL 40X™

ITL® is excited to introduce to the industry its New ITL 40X™.

It is a five ply – two scrim layers with a coating between the scrims plus coating on top and bottom. This provides extremely high tear strengths, puncture and mullen burst resistance. The makeup of each ITL® coated woven material varies based on different combinations of HDPE scrim properties, weave count and the LDPE coating thickness.

And the New ITL 40XGL™

The ITL 40XGL™ is a combination of ITL 40X™ with the addition of a 2.5 oz. Geotextile Laminated (GL) to one side.

ITL® Factory Tested

---

Quality Assurance/Quality Control

All ITL® liners undergo rigorous in-house testing

Micrometer Tests material thicknesses under ASTM D1777 option 1.

Dual track Tensiometer Tests tensile properties and seam strengths under ASTM D 751.

UV Accelerated Weathering Tester Tests materials for 2000 hours under ASTM 4799.

Advantages with buying from Inland Tarp & Liner (ITL)

---

ITL® CWPE Technical Data Sheet

---

Property	ITL 12 CWPE	ITL 16 CWPE	ITL 20 CWPE	ITL 24 CWPE	ITL 30LT CWPE	ITL 30 CWPE	ITL 40X CWPE	ITL 40XGL CWPE
Thickness nominal - mil ASTM D 1777*	12	16	20	24	30	30	40	47
Mass per Unit Area - oz/yd.2 ASTM D751	6.2	7.5	9.4	11.4	12.1	14.2	18	19.7
Grab Tensile Warp/ Weft - lbs ASTM D 751	179/154	191/201	235/225	297/308	357/341	431/388	664/706	669/654
Tongue Tear Warp/ Weft - lbs ASTM D 751	56/50	58/57	59/63	59/59	81/81	93/83	131/136	216/213
Hydrostatic Resistance - psi ASTM D751	81	124	160	227	248	258	590	542
Mullen Burst Strength - psi ASTM D 3786	330	391	457	525	632	681	1,005	1,224
Puncture Resistance - lbs ASTM D 4833	78	95	126	137	147	167	255	255
Color	B/B	B/B	B/B	B/B	B/B	B/B,B/G**	B/B	B/G**

** B/B – Black/Black, B/G – Black/Gray

UV Accelerated Weathering. More than 90% strength retained after 2,000 hours exposure.

*ASTM D1777 Option 1. All values are +/- 10% and are not intended as limiting specifications.

DISCLAIMER: The information contained herein is provided for reference purposes only and is not intended as a warranty or guarantee. Final determination of suitability for application is the sole responsibility of the user. These values are based on testing results from past fabric runs. Each production run varies in final results. If a certain specified value is required, please inform ITL in advance and we can provide current testing results. Last updated November 22, 2011.

Geomembrane Coated Woven Polyethylene (CWPE)

---

Coated Woven Polyethylene (CWPE) is made from woven HDPE tapes known as “base fabric” or “scrim” which provide high tear strengths and puncture resistance. The HDPE scrim is coated on both sides with LDPE to provide flexible barriers to contain liquid. Standard products are three ply - that is 1 scrim layer with coating on top and bottom.

Standard ITL® CWPE

New ITL 40X™

ITL® is excited to introduce to the industry its New ITL 40X™.

It is a five ply – two scrim layers with a coating between the scrims plus coating on top and bottom. This provides extremely high tear strengths, puncture and mullen burst resistance. The makeup of each ITL® coated woven material varies based on different combinations of HDPE scrim properties, weave count and the LDPE coating thickness.

And the New ITL 40XGL™

The ITL 40XGL™ is a combination of ITL 40X™ with the addition of a 2.5 oz. Geotextile Laminated (GL) to one side.

Ready to purchase or get a quote? Head over to our ITL® Build-A-Liner page to purchase or quote out a liner for your application needs!

Project Applications

---

ITL® CONTAINMENT LINERS

---

Benefits: ROI & Environmental Extend Life of Liner ● Recycling Subgrade Prep vs. Geotextile or Sand Underlayment Pads, Secondary Containment & Impoundments A suitable base must be prepared on the pad or the area to be lined. This base must be free of all sharp objects, roots, grass and vegetation. Unsuitable material (1/2” diameter or larger) found during the pre-installation inspection by the installer must be removed prior to the installation of the liner. Recommend base (subgrade) material be native materials or materials obtained from a borrow source smooth rolled and compacted to achieve a compaction of 95-98% relative density. An optional 8 oz. per square yard non-woven geotextile or approved construction fabric with a grab tensile of at least 205 pounds per sq. inch and a CBR Puncture value of at least 535 lbs. must be used to provide a suitable subgrade for the flexible membrane lining. Foreign materials, vegetation, protrusions, voids, cracks and other penetrating or raised sources must be removed from any sloping areas as well as the base. Loose rocks, rubble and other foreign matter are to be collected and deposited in the appropriate site out of the area to be lined. The excavated and filled areas shall be trimmed to elevations and contours shown on the drawings and must be smooth, uniform and free of all foreign matter, vegetation and sudden changes in grade.

Geomembrane may be covered by soil if desired. In areas of high traffic or areas with a high water table covering the entire liner is often recommended. ITL® recommends a pre-installation inspection of subgrade by ALL invested parties, including applicable governmental agencies based on individual project requirements. This collaborative program for proper Site Prep and Subgrade helps to ensure increased life of liner and reduce liner repairs.

Product Tags

---