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Western Gravel E &P Waste Disposal Facility October 2011 <br />CQA/QCP Page 12 of 19 <br />• CQA Engineer will verify that the overlapping of the adjacent rolls is at least 2 inches and that the <br />overlap between adjoining rolls is at least 12 inches and shingled down in the direction of the slope, <br />as well as verify that the geonet is tied every 12 inches across the roll width and every 6 inches in the <br />anchor trench <br />• CQA Engineer will verify that the liner materials have been properly anchored in the anchor trench <br />Geotextiles <br />The geotextile placed over the liner materials in the floor of the cells will be a 16 -ounce (oz) non -woven <br />fabric and the geotextile placed over the leachate gravels and sands will be a 6 -oz non -woven fabric. The <br />geotextiles shall be manufactured form polypropylene resin. The geotextiles will be delivered to the site <br />in factory rolls. The geotextiles shall meet the properties listed in the following table. <br />GEOTEXTILE SPECIFICATIONS <br />TESTED PROPERTY <br />TEST METHOD <br />MINIMUM AVERAGE <br />ROLL VALUES <br />16 -oz Non -woven Geotextile <br />Nominal Mass/Unit Area, oz /yd <br />ASTM D5261 <br />16 <br />Minimum Grab Strength, Lbs <br />ASTM D4632 <br />270 <br />Minimum Puncture Strength, Lbs <br />ASTM D4833 <br />200 <br />UV Resistance, % retained strength <br />ASTM D4355 <br />>70 <br />6 -oz Non -woven Geotextile <br />Nominal Mass/Unit Area, oz/ d2 <br />ASTM D5261 <br />6 <br />Minimum Grab Strength, Lbs <br />ASTM D4632 <br />180 <br />Minimum Puncture Strength, Lbs <br />ASTM D4833 <br />100 <br />UV Resistance, % retained strength <br />ASTM D4355 <br />>70 <br />Pre - construction: <br />• Prior to transporting any geotextile to the site, the following information from manufacturer should be <br />provided to the CQA Engineer, including a copy of the project specification sheet listing all test <br />methods and property values and copies of the quality control certificates issued by the raw material <br />suppliers, the certificates shall include roll number and identification. The geotextile manufacturer's <br />quality assurance (MQA) testing requirements and frequencies are outlined in the following table. <br />NWCC INC. <br />