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Bentonite Swell Index' <br />ASTM D 5890 i 1 per 50 tonnes <br />24 mL /2g min. <br />Bentonite Fluid Loss' <br />Bentonite Mass /Areal <br />ASTM D 5891 <br />ASTM D 5993 <br />1 per 50 tonnes <br />40,000 ft m <br />18 mL max <br />0.75 Ib /ft (3.6 kg/m min. <br />GCL Tensile Strength <br />ASTM D 6768 200,000 ft (20,000 m <br />50 lb/in (88 N /cm) MARV <br />GCL Peel Strength <br />ASTM D 6496 40,000 ft m <br />3.5 Ibs /in (6.1 N /cm) min. <br />GCL Index Flux° <br />ASTM D 5887 Weekly <br />1 X 10 m /m /sec max. <br />GCL Hydraulic Conductivity' <br />ASTM D 5887 <br />Weekly <br />5 X 10 /sec max. <br />GCL Hydrated Internal Shear <br />Strengths <br />ASTM D 5321 <br />ASTM D 6243 Periodic <br />500 psf (24 kPa) typical @200 <br />psf <br />LINING TECHNOLOGIES <br />TECHNICAL REFERENCE 401 -BMDN <br />BENTOMAT° DN <br />CERTIFIED PROPERTIES <br />Bentomat DN is a reinforced GCL consisting of a layer of sodium bentonite between two nonwoven geotextiles, which are neediepunched <br />together. <br />Notes <br />1 Bentonite property tests performed at a bentonite processing facility before shipment to CETCO's GCL production facilities. <br />2 Bentonite mass /area reported at 0 percent moisture content. <br />3 All tensile strength testing is performed in the machine direction using ASTM D 6768. All peel strength testing is performed using <br />ASTM D 6496. Upon request, tensile and peel results can be reported per modified ASTM D 4632 using 4 inch grips. <br />4 lndexflux and permeability testing with cleaved distilled /deionized water at 80 psi (551kPa) cell pressure, 77 psi (531 kPa) headwater <br />pressure and 75 psi (517 kPa) tailwater pressure. Reported value is equivalent to 925 gal /acre /day. This flux value is equivalent to <br />a permeability of 5x10 -9 cm /sec for typical GCL thickness. Actual flux values vary with field condition pressures. The last 20 weekly <br />values prior the end of the production date of the supplied GCL may be provided. <br />5 Peak values measured at 200 psf (10 kPa) normal stress for a specimen hydrated for 48 hours. Site- specific materials, GCL <br />products. and test conditions must be used to verify internal and interface strength of the proposed design. <br />CETCO has developed an edge enhancement system that eliminates the need to use additional granular sodium bentonite within the overlap area of the <br />seams. We call this edge enhancement, SUPERGR00VETM, and it comes standard on both longitudinal edges of BENTOMAT' DN. It should be noted that <br />SUPERGROOVETM does not appear on the end -of -roll overlaps and recommend the continued use of supplemental bentonite for all end -of -roll seams. <br />LAST UPDATED MAY 2007 <br />IMPORTANT The information contained herein supersedes all previous printed <br />versions, and is believed to be accurate and reliable. For the most up -to -date <br />information, please visit www.CETCO.com. CETCO accepts no responsibility for <br />the results obtained throught application of this product. CETCO reserves the <br />right to update information without notice. <br />© 2007 CETCO I PRINTED IN THE USA ON RECYCLED PAPER <br />www.CETCO.com <br />2870 Forbs Avenue Hoffman Estates, IL 60192 <br />847.851.1800 1 800.527.9948 <br />1 <br />