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Western Gravel E &P Waste Disposal Facility October 2011 <br />CQA/QCP Page 13 of 19 <br />GEOTEXTILE MQA <br />GEOTEXTILE PROPERTY <br />TEST METHOD <br />TEST FREQUENCY <br />Mass per Unit Area <br />ASTM D5261 <br />1 test per 90,000 ft <br />Grab Tensile Strength and <br />Elongation <br />ASTM D4632 <br />Trapezoidal Tear Strength <br />ASTM D4533 <br />" <br />Puncture Strength <br />ASTM D4833 <br />Permittivity <br />ASTM D4491 <br />1 test per 540,000 <br />Apparent Opening Size <br />ASTM D4751 <br />UV Stability <br />ASTM D4355 <br />1 per formula <br />Construction: <br />• CQA Engineer will observe the primary liner just prior to placement of 16 -oz geotextile to verify that <br />the liner materials have not been damaged <br />• CQA Engineer will examine geotextile rolls upon delivery and note any damage to covering, as well <br />as possible damage to the product itself requiring further inspection <br />• CQA Engineer will clearly mark rejected rolls due to severe flaws and any minor repairable flaws <br />• CQA Engineer will observe and inspect the materials as they are unrolled and placed upon the <br />primary liner materials and leachate gravels. Areas requiring repairs will be marked in the field by <br />the CQA Engineer. Repairs shall be made using a patch from another piece of geotextile secured in <br />place with a 6 inch wide minimum overlap in all directions. The patch will be secured by sewing or <br />heat bonding in all directions <br />• Geotextile seams will be continuously sewn or welded with a minimum overlap of 3 inches. <br />• CQA Engineer will observe and document that installer has followed all requirements for placing, <br />seaming and repairing geotextile. <br />GCL <br />The GCL (geosynthetic clay liner) to be used in the landfill cap/final soil cover will consist of Bentomat <br />CL or an equivalent product. The GCL shall consist of a layer of natural sodium bentonite clay <br />encapsulated between two geotextiles. Only reinforced GCL will be used. If an alternate type of GCL is <br />proposed by the installer, independent test results demonstrating that the product substantially meets all of <br />the requirements of this section must be submitted to CQA Engineer prior to placement. The GCL used <br />at this project shall meet the properties listed in the following table. <br />NWCC INC. <br />