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6.4.5 Exhibit E - Reclamation Plan <br />-approved equivalent, to a maximum 6-inch lift. The movement of the hauling <br />and spreading equipment over the fill shall be controlled so that the entire <br />surface of each lift shall be traversed by not less than one tread track of heavy <br />equipment. <br />The material shall be compacted to the maximum achievable or 95 percent of the <br />maximum dry density as defined by ASTM D698 at -1 % to +3% of optimum <br />moisture content. The Contractor shall maintain the water content of the material <br />within the range necessary to obtain the required compaction. <br />Between each compacted lift, the surface shall be scarified or disked to a <br />minimum depth of 2". If, in the CQAP Monitor's opinion, the surface of the <br />compacted clay liner lift is too wet for proper compaction, it shall be removed <br />and/or scarified and allowed to dry prior to re-compaction. This shall be <br />performed in an approved manner to a sufficient depth to provide a satisfactory <br />bonding surface before the succeeding layer of material is placed. <br />The dewatering gap shall be left open between the liner construction and pit wall <br />to insure each liner lift does not come into contact with local groundwater. The <br />dewatering gap can be backfilled as the liner progresses vertically, however it is <br />not required that this fill be compacted or tested. <br />CLAY LINER CONSTRUCTION QUALITY ASSURANCE PLAN (CQAP) <br />The purpose of this is CQAP to provide the Quality Assurance (QA) requirements <br />for Quality Control (QC) checks for construction of the Bonser Pit Clay Liner <br />Design and Specifications (given above). <br />The CQAP is prepared to provide the necessary documentation recommended <br />by the Colorado Office of the State Engineer (SEO) as outlined in the Guide to <br />Specification Preparation for Slurry Walls and Clay Liners as a Component of a <br />Colorado Mined Land Reclamation Permit to demonstrate achievement of the <br />construction regulatory requirements. <br />This plan addresses observations, test methods, test frequencies, and <br />documentation necessary to adhere to the construction-level specifications and <br />design details in all phases of construction. Protocol for reporting test results that <br />certify compliance with the Clay Liner Design and Specifications, correcting <br />construction deficiencies, and documentation of such corrections are also <br />provided in this CQAP. <br />Construction Quality Assurance (CQAP) Organization <br />The CQAP organization shall consist of a Project Manager / CQAP Manager <br />representing the Owner (CEC), the Engineer (Weiland, Inc.), a Construction QC <br />inspector, and Geotechnical CQAP Monitor from a reputable third-party <br />geotechnical engineering firm. The flowchart below presents the project <br />organization, lines of communication, and structure of CQAP inspection activities.