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Newmont-Cripple Creek & Victor Gold Mine <br />Technical Specification No. 02200-1 EARTHWORKS – Owner Performed Work <br />VLF2 Phase 3 <br />Project No.475.0106.049 <br />September 13, 2023 <br /> <br /> <br /> <br />Technical Specification No.02200-1 Earthworks – Owner Performed Work Page 6 <br />9. After each layer of fill material has been placed, spread, and moisture-conditioned, <br />the layer shall be compacted by passing compaction equipment over the entire <br />surface of the layer a sufficient number of times to obtain the required density, as <br />specified herein. Compaction shall be accomplished with equipment and by methods <br />approved by CERTIFYING ENGINEER. If such equipment or methods are found <br />unsatisfactory for the intended use, CONTRACTOR shall replace the unsatisfactory <br />equipment with other types or adjust methods until proper compaction is achieved. <br />10. For Structural Fill with less than 30 percent rock materials above 3/4-inch size, the <br />CQA MONITOR will measure the ambient air temperature on an hourly basis. If the <br />ambient air temperature is less than thirty-two degrees Fahrenheit for more than <br />one hour over the preceding twenty-four (24) hours, the CQA MONITOR will <br />measure the temperature of the fill to determine if the fill is frozen. "Frozen" is <br />defined as a mean temperature of thirty-two degrees Fahrenheit (32°F) or less. The <br />CQA MONITOR will measure the temperature at a depth of three (3) inches and six <br />(6) inches, recording the lower of the two. Six (6) measurements will be taken per <br />acre, and if the average is below thirty-two degrees Fahrenheit (32°F), the fill will be <br />considered frozen. If the fill is determined to be frozen the CONTRACTOR may either <br />remove and replace the frozen fill or wait until subsequent temperature monitoring <br />indicates the fill is unfrozen at no cost to CC&V. <br />11. Overburden slopes shall be compacted using a method specification and graded to <br />meet the grades and dimensions shown on the DRAWINGS. The Bedding Fill subgrade <br />surface will be prepared as identified in Section 2200 of the SPECIFICATIONS. <br />B. Overburden Fill <br />1. Areas to receive Overburden Fill will include, but are not limited to, backfilling existing <br />pits to within 35 feet of the proposed geomembrane surface. <br />2. Overburden Fill material shall be overburden waste placed with in maximum 25-foot <br />thick lifts, and compacted utilizing loaded haulage equipment. <br />3. Maximum rock size for overburden fill shall be 5 feet. <br />4. Prior to commencement of Overburden Fill, the CONTRACTOR shall complete task <br />training to ensure that material meeting the specification is borrowed and placed. <br />This training will include visually identifying oversized material and visually verifying <br />that the material being loaded and placed is reasonably graded to avoid placement of <br />gap graded material with excessive voids. <br />C. Structural Fill <br />1. Areas to receive Structural Fill will include, but are not limited to, slope reductions, <br />and miscellaneous site grading. <br />2. CONTRACTOR shall condition Structural Fill to a moisture content that allows <br />compaction to the required density and that results in a firm, unyielding surface