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amec <br /> foster <br /> wheeler <br /> Zephyr Gold USA Ltd. PAGE 6 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 /> Do not undertake deployment if weather conditions will preclude material seaming on same day as <br /> deployment. <br /> 1.4.2 SEAMING <br /> 1.4.2.1 NORMAL WEATHER CONDITIONS <br /> Normal seaming procedures may take place if the following weather conditions exist: <br /> • Ambient temperature between 35°F and 100°F; <br /> • Dry conditions, i.e., no precipitation or other excessive moisture, such as fog or dew; and <br /> • No excessive winds. <br /> 1.4.2.2 ADVERSE WEATHER CONDITIONS <br /> Do not seam if ambient temperature is below 14°F or above 100°F. Do not seam during precipitation, in <br /> the presence of excessive moisture (e.g., fog, dew), in an area of ponded water, or in the presence of <br /> excessive winds. <br /> If the ambient air temperature is between 14°F and 35°F for the entire shift, Cold Weather Seaming <br /> provisions will govern: <br /> • The INSTALLER will be required to perform a minimum of four trial seams during the planned Work <br /> shift, at approximately the same time interval throughout the scheduled workday. <br /> • If the subgrade materials are considered frozen, the INSTALLER must place seaming boards or <br /> slip sheets when seaming. Seaming boards or slip sheets shall be removed by INSTALLER. <br /> 2.0 PRODUCTS <br /> The geomembrane shall be a single-sided textured high density polyethylene (HDPE). The geomembrane <br /> shall be manufactured of new, first-quality resin and shall be manufactured specifically for this type of <br /> application. No inclusion of reclaimed polymer is acceptable. <br /> The resin MANUFACTURER shall certify each batch of raw material for the following properties: <br /> S:\ZEPHYR MINERALS\DRMS MINE APPLICATION\02776-GEOMEMBRANE.DOCX <br />