ITL™ CWPE Liner Advanced Containment Solutions™

"Oil and natural gas production (O&G) is a fast-growing segment of both the U.S. economy and the geosynthetic materials markets. Horizontal drilling and hydraulic fracturing of shale deposits have opened up large new oil and gas exploration plays in regions of the U.S. previously considered uneconomical to develop."

Advanced Containment Solutions™


  • Drilling Pads
  • Secondary Containment (Frac, Chemical, Diesel, Generators, etc.)
  • Ponds & Impoundments (Freshwater)
  • Pits including Stormwater Run-off
  • Irrigation & Sediment Ponds
  • Foam Berms
  • Insulated Floating Covers
  • Landfills for Soil & Trash
  • Hazardous Waste
  • Lagoons
  • Stockpile Covers


  • ITL™ Coated Woven Polyethylene in . . .
  • 12 mil CWPE
  • 16 mil CWPE
  • 20 mil CWPE
  • 24 mil CWPE
  • 30 mil CWPE
  • 30 mil LT CWPE
  • ITL 40X™ CWPE
  • 30 mil LLDPE smooth or textured anti-skid surface
  • 40 mil & 60 mil LLDPE smooth
  • Light Gray CWPE liners


  • 4 oz. to 16 oz. non-woven felt underlayment
  • 8 oz. felt readily stocked in fabricated or roll form Based on subgrade, recommended to protect and extend liner life.
  • Custom single-piece liner for larger projects, up to 10,000 lbs.
  • Rapid Order Turnaround
  • Factory Tested

Advanced Containment Solutions™ Applications & Variables

Containment and Water Management . . . standard operating systems represent challenges not only within a specific play, such as Marcellus and adjacent Utica Shale, but also with producers operating multiple rigs in the same play. Secondary Containment is regulated, but in the majority of cases, materials for containment are not specified for these Applications:

Secondary Containment:

  • Diesel Tanks
  • Drilling Mud
  • Hydraulic Oil
  • Drilling Mud Additives
  • Hydraulic Fracturing Additiives & Flowback
  • Complete Pad Containment
  • Secondary Containment for larger frac containment systems


  • Freshwater (Well-Site or Off-Site)
  • Treated Frac Water at Well Site, smaller footprint and/or tandem with frac tanks

Variables . . . In addition to variables dealing with project duration, crawling rigs and constant repositioning, ITL™ understands industry trends dealing with reusability and recycling and associated risk management issues. ITL™ . . . hands-on experience with operators, our R&D programs and ability to listen and react to industry needs set us apart with a line of products and Solutions for the above Applications.

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!

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™ Single Scrim CWPE


ITL 40X™ Double Scrim CWPE


ITL 40X™ Double Scrim CWPE with Geotextile Laminate


ITL 40X™ - Market Tested, Application Proven!

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.

ITL 40XGL™ - Saving you time and cost, without cutting corners!

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

New ITL 40X™ & ITL 40XGL™ Features:

  • 100% Recyclable
  • Reinforced Liners . . . 5 & 6 layers thick
  • "X" symbol = "double scrim" for "multiple strength"
  • Plant Fabricated & Tested (significantly reduce time and related weather issues for In-field seam welding)
  • No geotextile underlayment* (time savings, reduce labor, less material to recycle and/or landfill)
  • Offers field repair advantages
  • Reusability of Liner (by application & well pad area)

Marcellus: ITL 40GXL™

  • 6-Ply Liner
  • 2.5oz Geotextile Laminated Surface Layer
  • Installed with no geotextile underlayment needed.*

Bakken: ITL 40X™

  • 5-Ply Liner
  • Installed with no geotextile underlayment and no geotextile layer installed on surface.*
*With acceptable subgrade.

ITL™ CWPE Product Applications Breakdown


ITL™ 12
ITL™ 16
ITL™ 20
ITL™ 24
ITL™ 30
ITL™ 40X

Containment Liners

Well PadXXNRA2A2A2A3A3
Frac TanksXXNRA2A2A2A3A3

Water Storage

Recreational PondsNRNRAAAAAA
Agricultural PondsNRNRAAAAAA
Drinking WaterNRNRA4A4A4A4A4A4

Fluid Storage

Treated Flowback FluidXXXNRNRA3^A3A3
Production FluidXXXNRNRA3A3A3
Gasoline Unleaded**XXXNRNRA3A3A3


Soil - ContaminatedAAAAAAAA
Soil - CleanAAAAAAAA
Wheat, Hay, CornAAAAAAAA
Landfill Daily CoverAAAAAAAA

Chart Key

XNot Acceptable
NRNot Recommended
1May be acceptable with geo underlayment required
2May be acceptable with geo underlayment and overlayment
3Subgrade - Subgrade is anticipated to meet ITL™ acceptance specification site conditions may determine whether geotextiles are required.
4ITL coated woven products: presently not NSF potable approved


EPA 9090 Tested and approved for frac flowback by PA DEP.

State Regulations

When applicable, check your individual State regulations for specifications and minimum requirements.

*The above chart is to be used as a guideline only based on past usage of ITL products. ITL does not guarantee a product’s suitability for any specific application. Please contact ITL™ to discuss your specific application and any warranties that may apply.

**Please see "Polyethylene Chemical Compatibility Guidelines" section to see "general guidelines" for chemical use with ITL™ CWPE materials.

ITL™ CWPE Chemical Compatibility Guidelines

In order to gauge the durability of a material in contact with a chemical mixture, testing is required in which the material is exposed to the chemical environment in question. Chemical resistance testing is a very large and complex topic because of two factors. First, the number of specific chemicals is virtually endless and second, there are many criteria for liners such as tensile strength, hardness, etc. that may be used to assess a material’s resistance to degradation.

The chemical resistance of polyethylene has been investigated by many people over the past few decades. We are able to draw from that work when making statements about the chemical resistance of today’s polyethylene geomembrane. In addition to that, many tests have been performed that specifically use geomembrane and certain chemical mixtures.

Naturally, however, every mixture of chemicals cannot be tested. As a result of these factors, the attached chemical resistance charts, demonstrates general guidelines. These charts should not be construed as a full chemical endorsement of the liners ability with a given solution. It is recommended that any product to be contained be specifically tested by immersion with each material (liner) product to be considered. Please contact your ITL Representative for further questions and assistance.

Click here to see the Chemical Compatibility Guidelines sheet.

ITL™ CWPE Technical Data Sheet


Thickness nominal - mil ASTM
D 1777*

12 16 20 24 30 30 40 47

Mass per Unit Area - oz/yd.2

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

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.

Advantages with buying from ITL™

  • O&G Liner Experience in Multiple Plays . . . Containment

    Marcellus, Utica Shale, Bakken, Eagle Ford, Canada & Off-Shore
  • Rapid Turnaround & Delivery & Customer Service

    To the well site or your yard . . . generally same week or a few days
  • Factory Tested

    Quality Assurance – Quality Control for our customers - We test every one of our roll goods
  • Coated Woven Reinforced Liner Products

    Superior Coated Woven Reinforced Liner Products
  • Custom Fabrication . . . single piece liners and single felt panels

    Save time and labor costs for in-field installation and welding
  • O&G Industry Pulse for Changing Liner Needs . . . R&D w/ Solutions

    ITL 40X™ & 40XGL™ CWPE Liners • ITL™ One-Step . . . Felt/Liner/Felt


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!

ITL™ Factory Tested

Quality Assurance/Quality Control

All ITL™ liners undergo rigorous in-house testing


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.


Site prep for containment liners is crucial

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.

When covering the liner, care should be taken to prevent any damage to the geomembrane or geosynthetics. At no time will construction equipment be allowed to drive directly on the liner. Access roads for soil cover should be maintained to provide 6" minimum, 12" preferable, between the excavation equipment and liner at all times. Damage to the liner, shall be repaired prior to proceeding with cover. Costs associated with repairs are the contractor’s responsibility.

**Cover material shall be 1\2" minus particles, clean rounded soils or gravels free of sharp edges, sticks, rubbish and debris or foreign materials. The cover material shall be placed as soon as practical, upon completion of the liner installation, or in conjunction with, as the installation progresses to minimize traffic.

When applicable, cover soils should be dumped and leveled over the liner and not pushed from one end to the other to minimize rolling of the geomembrane beneath the soils. Cover soil should always be placed from the base up on slopes never pushed from the top of the slope downwards. Equipment should be turned in long sweeping turns and not spun quickly to eliminate the chance of digging down to the liner thru the cover soil.

When covering or initially filling a liner it is important not to lock the liner into the perimeter anchor trench prior to covering. This can cause undue stress and tension on the liner slopes during the covering process. The anchor trench or perimeter shelf area should be the last area covered to complete the cover process.

** Site specific materials or sizes may be acceptable. It is recommended that the contractor receive prior written approval for acceptance of the cover materials, from an ITL™ representative, before covering the liner.

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!