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Newmont-Cripple Creek&Victor Gold Mine <br /> Technical Specification No.02210.DOCx <br /> Squaw Gulch VLF ■ <br /> Project No.475.0106.006 <br /> June 15,2016 <br /> 3.3. Native Material <br /> For the remediation of shafts greater than 25 feet, which are currently backfilled with native <br /> material, CONTRACTOR shall excavate the current native backfill to a depth of 25 feet <br /> below Soil Liner Fill subgrade elevation. The surface of the native material at this elevation will <br /> then be compacted using a method specification that results in a firm surface that will be <br /> approved by CERTIFYING ENGINEER. CONTRACTOR shall then remediate the underground <br /> working using Coarse Shaft Backfill, Cement Plug, and Cemented Rockfill as shown on the <br /> DRAWINGS. <br /> 3.4. Blasting <br /> The CONTRACTOR shall compact the surface of the area that has been blasted. If the blasted <br /> surface is below the Soil Liner subgrade elevation, the CONTRACTOR shall compact the blasted <br /> surface using a method specification approved by the CERTIFYING ENGINEER, and then <br /> remediate according to the DRAWINGS to achieve the design grades and elevations. If the <br /> blasted surface is above the Soil Liner subgrade elevation, the CERTIFYING ENGINEER assess <br /> the foundation conditions and recommend whether the CONTRACTOR shall over excavate and <br /> backfill with Cemented Rockfill and Structural Fill, or if the CONTRACTOR shall remove excess <br /> material and compact the final grade surface using a method specification approved by the <br /> CERTIFYING ENGINEER. <br /> Page 3 <br />