2022-02-09_PERMIT FILE - M2021046 (4)

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amec foster wheeler Zephyr Gold USA Ltd. PAGE 4 OF 8 Dawson Gold Project SEC. NO.: Dawson Filtered Tailings Storage Facility SPECIFICATION 02777.0 Pre-feasibility Study TECHNICAL SPECIFICATIONS FOR DATE: (ORIGINAL) Fremont County, Colorado GEOTEXTILE 20-October-16 PROJECT NO.: 74201633 REVISION: A DATE: 20-Oct-16 CONTRACTOR shall be aware of all activities outlined in the CQA Plan, and the CONTRACTOR shall account for these activities in the construction schedule. CONTRACTOR shall assure that geotextile is delivered to the site at least five (5) calendar days prior to installation. Conformance testing must be completed, reviewed and approved by CQA MONITOR prior to shipping of geotextile to the site. Geotextile rolls that do not meet the requirements of this SPECIFICATION will be rejected. CONTRACTOR will be required to replace the rejected material with new material that complies with the SPECIFICATIONS, at no additional cost to OWNER. In order to prevent weather damaged geotextile from being placed, the following Quality Assurance procedures shall be followed: • CONTRACTOR shall perform its Work and utilize sufficient ballast as necessary to prevent wind uplift of the geotextile panels. • If weather damage should occur, CQA MONITOR shall determine if the geotextile shall be repaired or replaced. Weather damage to the geotextile will include tears and dirty fabric, as determined by the CQA MONITOR. • Repair or replacement of the weather-damaged geotextile shall be completed by CONTRACTOR at no additional cost to OWNER. • As determined by CQA MONITOR and MANAGER, the geotextile panel may be rejected. 1.4 APPLICABLE STANDARDS The publications listed below form part of this Section. Each publication shall be the latest revision and addendum in effect at the date of the Contract award, unless noted otherwise. Except as specifically modified by the requirements specified herein or the details on the DRAWINGS, the Work included under this Section shall conform to the applicable provisions of these publications: • ASTM D4355 - Standard Test Method for Deterioration of Geotextiles by Exposure to Light, Moisture and Heat in a Xenon Arc Type Apparatus • ASTM D4491 - Standard Test Methods for Water Permeability of Geotextiles by Permittivity • ASTM D4533—Standard Test Method for Trapezoid Tearing Strength of Geotextiles • ASTM D4632—Standard Test Method for Grab Breaking Load and Elongation of Geotextiles S:\ZEPHYR MINERALS\DRMS MINE APPLICATION\02777-GEOTEXTILE.DOCX