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amec <br /> foster <br /> wheeler <br /> Zephyr Gold USA Ltd. PAGE 2 OF 17 <br /> Dawson Gold Project SEC. NO.: <br /> Dawson Filtered Tailings Storage Facility SPECIFICATION 02776.0 <br /> Pre-feasibility Study <br /> TECHNICAL SPECIFICATIONS FOR DATE: (ORIGINAL) <br /> Fremont County, Colorado GEOMEMBRANE 20-October-16 <br /> PROJECT NO.: 74201633 REVISION: A <br /> DATE: 20-Oct-16 <br /> TABLE OF CONTENTS <br /> 1.0 GENERAL...............................................................................................................................................4 <br /> 1.1 SUMMARY.................................................................................................................................4 <br /> 1.2 CONSTRUCTION QUALITY ASSURANCE..............................................................................4 <br /> 1.2.1 FIELD SAMPLES.......................................................................................................4 <br /> 1.3 DELIVERY, STORAGE, AND HANDLING ................................................................................4 <br /> 1.3.1 PACKING AND SHIPPING........................................................................................4 <br /> 1.3.2 STORAGE AND PROTECTION................................................................................5 <br /> 1.4 SITE CONDITIONS....................................................................................................................5 <br /> 1.4.1 GEOMEMBRANE DEPLOYMENT............................................................................5 <br /> 1.4.2 SEAMING...................................................................................................................6 <br /> 1.4.2.1 NORMAL WEATHER CONDITIONS.........................................................6 <br /> 1.4.2.2 ADVERSE WEATHER CONDITIONS.......................................................6 <br /> 2.0 PRODUCTS............................................................................................................................................6 <br /> 3.0 SEAMING AND TESTING EQUIPMENT:...............................................................................................9 <br /> 3.1 SEAMING...................................................................................................................................9 <br /> 3.2 VACUUM TESTING (FOR EXTRUSION SEAM ONLY)............................................................9 <br /> 3.3 AIR PRESSURE TESTING (FOR DOUBLE FUSION SEAM ONLY)........................................9 <br /> 4.0 EXECUTION ......................................................................................................................................... 10 <br /> 4.1 SUBGRADE............................................................................................................................. 10 <br /> 4.2 ACCEPTANCE......................................................................................................................... 10 <br /> 4.3 ANCHOR TRENCH.................................................................................................................. 10 <br /> 4.4 FIELD SEAMS ......................................................................................................................... 11 <br /> 4.4.1 SEAM LAYOUT........................................................................................................ 11 <br /> 4.4.2 SEAMING METHODS ............................................................................................. 11 <br /> 4.5 SEAMING PROCEDURES...................................................................................................... 11 <br /> 4.5.1 GENERAL................................................................................................................ 11 <br /> 4.5.2 FIELD TRIAL SEAMS.............................................................................................. 12 <br /> 4.6 NONDESTRUCTIVE TESTING............................................................................................... 12 <br /> 4.7 DESTRUCTIVE TESTING....................................................................................................... 14 <br /> S:\ZEPHYR MINERALS\DRMS MINE APPLICATION\02776-GEOMEMBRANE.DOCX <br />