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CAM Colorado Loadout <br />#00489 -0002 <br />01/06/12 <br />D. Pre - Construction Materials Testing <br />Huddleston -Berry <br />{'.gn m, h Tra ,i 1 I C <br />1) Specific materials proposed to be used for the liner construction will be <br />evaluated by Huddleston -Berry to ensure conformance with the design <br />and applicable regulations. In accordance with the referenced Solid <br />Waste Guidance Document, laboratory testing will be conducted on <br />proposed borrow materials as summarized in the following table: <br />TABLE 1 <br />Total Liner Volume <2,000 yd <br />Testing <br />Test Method <br />Required Frequency <br />Required # of <br />per Guidance <br />Tests for <br />Document <br />Compliance <br />Water Content (oven <br />ASTM D2216 <br />1 per 2,620 yd <br />1 <br />dried) <br />Atterberg Limits <br />ASTM D4318 <br />1 per 6,540 yd <br />1 <br />Fines Content <br />ASTM D1140 <br />1 per 6,540 yd <br />1 <br />(Hydrometer) <br />Grain Size Distribution <br />ASTM D422 <br />1 per 6,540 yd <br />1 <br />Proctor' <br />ASTM D698, <br />1 per 6,540 yd <br />3 (see note 1) <br />ASTM D1557 <br />Specific Gravity2 <br />ASTM D854 <br />1 per material type <br />1 <br />Hydraulic Conductivity <br />ASTM D5084 <br />1 per 13,080 yd <br />1 <br />Direct Shear <br />ASTM D3080 <br />"See note 3 <br />1 <br />' Guidance Document states that only 1 Proctor required for proposed borrow materials <br />and that Line of Optimums should be developed during construction; however, HBET <br />believes it is critical to develop Line of Optimums prior to construction. <br />2 Guidance Document states that Specific Gravity determination should be completed <br />during construction; however, Specific Gravity required to develop Line of Optimums. <br />3 Direct shear required to determine maximum water content that can be used during <br />compaction such that liner material has sufficient shear strength. <br />2) For the native soils proposed to be used as liner material, the testing will <br />initially include grain size analysis, Atterberg limits determination, Proctor, and <br />hydraulic conductivity to determine whether or not the native soils can meet <br />the Hydraulic Conductivity specification of 1x10 -7 cm /sec. Where the native <br />soils are determined to be capable of meeting the specification, the remainder <br />of the borrow material testing will be completed as outlined in the above table. <br />Exhibit 20 3 <br />