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C. The GCL shall be constructed concurrently with the HDPE Geomembrane and shall <br />be completely covered with completed HDPE geomembrane at the end of each <br />working day. GCL panel placement shall not precede HDPE geomembrane panel <br />placement by more than four GCL panels. <br />PART 2 PRODUCTS <br />2.1 PROPERTIES <br />A. The GCL shall have the following properties. <br />Table 02777-1 <br />Properties for Geosynthetic Clay Liner <br />Property <br />Test Method <br />Test Frequency <br />Required Values <br />Bentonite Swell Index <br />ASTM D 5890 <br />1 per 100,000 lb <br />24 mL/2g min. <br />Bentonite Fluid Loss <br />ASTM D 5891 <br />1 per 100,000 lb <br />18 mL max. <br />Bentonite Mass/Area <br />ASTM D 5993 <br />40,000 sf <br />0.75 lb/sf <br />ASTM D 4632 <br />150 lbs <br />GCL Tensile Strength <br />40,000 sf <br />ASTM D 6768 <br />45 lbs/in <br />ASTM D 4632 <br />35 lbs <br />GCL Peel Strength <br />40,000 sf <br />ASTM D 6496 <br />5.3 lbs/in <br />GCL Index Flux <br />ASTM D 5887 <br />2 per project <br />1 x 10-8 m3/m2/sec max <br />GCL Hydraulic Conductivity <br />ASTM D 5887 <br />1 per week <br />5 x 10-9 cm/sec max <br />Interface Shear Strength <br />(post -peak) <br />7' <br />GCL/Geomembrane/Protective <br />ASTM D6243 <br />1 per project <br />Operations Layer Soil' <br />c = 0 psf <br />Notes: <br />' The interface shear strength testing will be performed by the QA/QC CONSULTANT. <br />1. The GCL shall consist of a layer of bentonite encapsulated between two <br />Forward Landfill WMU FU -06 4 GEOSYNTHETIC CLAY LINER (GCL) <br />02777 <br />• <br />• <br />