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Geomembranes - Enviro Liner   	

Enviro Liner® is our premium quality geomembrane material designed for top performance in all geomembrane applications. 	

Enviro Liner® is a proprietary polyolefin material designed for outstanding durability, chemical resistance, and flexibility. Enviro Liner® is manufactured by Layfield at our facility in Vancouver, B.C. Every step in the production of an Enviro Liner® geomembrane is completed according to our ISO 9002 Quality System, ensuring your liner adheres to stringent standards for all geomembrane applications. Whether you require manufactured roll stock, fabricated geomembrane panels, or complete installation services, Layfield's Enviro Liner® is your first choice in geomembrane technology. 
Enviro Liner® is ideal for applications such as water and waste water, secondary containment and soil remediation, and pond and canal liners. Enviro Liner® has been specially formulated for long term UV durability. Enviro Liner® contains special additives to optimize UV life expectancy. Our goal in developing the Enviro Liner® formulation has been to offer a highly UV stabilized flexible liner, that provides the same exposed service life at 30 mil as can be expected from 60 mil HDPE. 
The flexibility of Enviro Liner® allows us to prefabricate large panels of liner in our plant. Often, entire ponds can be lined in one piece, speeding construction and minimizing field work. Enviro Liner® is ideally suited to cold temperature installations and is flexible in temperatures that would damage other lining materials. 
Enviro Liner® has excellent chemical resistance and can be used for secondary containment in a variety of applications. Enviro Liner® is also used in water containment, canal, and most other liner applications. 	

25 Nov 2003 	
Enviro Liner® Minimum Material Properties 	

Style 	
ASTM 	
Enviro Liner® 20 (U) 	
Enviro Liner® 30 (U) 	
Enviro Liner® 40 (U) 	

Thickness (Nominal) 	
D5199 	
20 mil
0.5 mm 	
30 mil
0.75 mm 	
40 mil
1.0 mm 	

Tensile Strength at Break 	
D638 	
77 ppi
13.5 N/mm 	
115 ppi
20.1 N/mm 	
152 ppi
26 N/mm 	

Elongation 	
D638 	
800% 	
800% 	
800% 	

Tear Resistance 	
D1004 	
11 lbs
49 N 	
16 lbs
71 N 	
22 lbs
98 N 	

Low Temperature Impact Resistance 	
D1790 	
-94°F
-70°C 	
-94°F
-70°C 	
-94°F
-70°C 	

Dimensional Stability 	
D1204
Max Chng 	
1.5% 	
1.5% 	
1.5% 	

Puncture Resistance 	
D4833 	
32 lbs
142 N 	
48 lbs
213 N 	
61 lbs
271 N 	

25 Nov 2003 	
Enviro Liner® Minimum Shop Seam Strengths 	

Style 	
ASTM 	
Enviro Liner® 20 (U) 	
Enviro Liner® 30 (U) 	
Enviro Liner® 40 (U) 	

Heat Bonded Seam Strength 	
D6392
25.4 mm
(1") Strip 	
37 ppi
6.5 N/mm 	
50 ppi
8.8 N/mm 	
70 ppi
12.2 N/mm 	

Heat Bonded Peel Adhesion Strength 	
D6392
25.4 mm
(1") Strip 	
FTB
30 ppi
5.3 N/mm 	
FTB
45 ppi
7.9 N/mm 	
FTB
60 ppi
10.5 N/mm	

25 Nov 2003 	
Enviro Liner® Minimum Field Seam Strengths 	

Style 	
ASTM 	
Enviro Liner® 20 (U) 	
Enviro Liner® 30 (U) 	
Enviro Liner® 40 (U) 	

Heat Bonded Seam Strength 	
D6392
25.4 mm
(1") Strip 	
30 ppi
5.3 N/mm 	
45 ppi
7.9 N/mm 	
60 ppi
10.5 N/mm 	

Heat Bonded Peel Adhesion Strength 	
D6392
25.4 mm
(1") Strip 	
FTB
26 ppi
4.6 N/mm 	
FTB
40 ppi
7.0 N/mm 	
FTB
53 ppi
9.3 N/mm 	

Enviro Liner® FABRICATION SIZES 	

Material
Style 	
2500 lb Panel
size 1120 kg 	
4000 lb Panel
size 1800 kg 	

Enviro Liner®
20 mil (0.50 mm)
Unsupported 	
25,000 ft2
2,300 m2 	
40,000 ft2
3,700 m2 	

Enviro Liner®
30 mil (0.75 mm)
Unsupported 	
17,000 ft2
1,600 m2 	
27,000 ft2
2,500 m2 	

Enviro Liner®
40 mil (1.0 mm)
Unsupported 	
12,500 ft2
1,200 m2 	
20,000 ft2
1,900 m2 	

Each and every liner panel we produce is a custom panel. The way we set up our shop is unique in that our shop welders produce prefabricated panels to best match your containment area. We size each panel to fit, without waste, in a logical sequence in your containment area. In containments with irregular shapes we size our panels to best accommodate the irregular size. 
There are no theoretical limits to the size of the liner panels that we can prefabricate but there are some practical limits, notably panel weight. Panel weight is important because of the limits of handling equipment that will be vailable in the field. Enviro Liner® is normally limited to a maximum panel weight of 2,500 lbs (1,200 kg); however, if a skilled installation crew is available then a panel of up to 4,000 lbs (1,800 kg) is possible. 
Panels are accordion folded in one direction and then rolled in the other direction. Unfolding instructions and dimensions are marked on the individual liner panel. Each panel is wrapped in an opaque, weather resistant covering suitable for shipment and storage. 
All shop fabricated seams are 100% visually inspected by the welding operator. Every fifth seam is tested for Film Tear Bond and destructively tested in peel and shear. Quality control reports are prepared with each panel produced.