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<br />Golder Auoclates Ina <br />200 Union Boulevard. Suite 500 <br />Lakewood. CO USA 80228 <br />Telephone (303)980-0540 <br />Fax(303)985-2080 <br />January 26, 1996 <br />Cripple Creek & Victor Gold Mining Company <br />2755 State Highway 67 <br />Victor, CO 80860 <br />Attention: Mr. Ron Roberts <br />Golder <br />A.SSOCIc\~eS <br />Our Ref: 943-2847.001 <br />RE: LINER LOAD AND INTERFACE SHEAR STRENGTH TEST RESULTS <br />FOR 100 MIL SMOOTH LLDPE GEOiVIEMBRANE <br />Dear Ron: <br />Golder Associates Inc. (Golder) has completed the liner load and interface shear strength <br />tests associated with the 100 mil smooth linear low density polyethylene (LLDPE) that was <br />requested by the Cripple Creek & Victor Gold Ivfining Company (CC&V) as part of the <br />1996 Phase II Completion geomembrane evaluation. <br />Site specific materials were used in the testing. Cresson Ore and Pad No. 3 materials was <br />processed to meet the Drain Cover Fill and the Low Volume Solution Collection Fill <br />specifications, respectively. Poly-Flex Inc. provided 100 mil smooth LLDPE <br />geomembrane samples. <br />The Drain Cover Fill / 100 mil smooth LLDPE geomembrane/ Low Volume Solution <br />Collection Fill configuration was subjected to a normal load of 385 psi for a period of 24 <br />hours. The geomembrane was observed to be indented from the granular materials. <br />However, no pinholes or defects were observed when the geomembrane was vacuum <br />tested. The liner load laboratory report is presented in Attachment A. <br />Interface shear strength testing was performed for the Drain Cover Fill / 100 mil smooth <br />LLDPE geomembrane/ Low Volume Solution Collection Fill configuration. The <br />configuration was loaded to normal loads of 50, 100, 150 and 300 psi and sheared at a rate <br />of 0.04 inches per minute. Test results indicate that the configuration exhibited a peak and <br />residual friction angle of 31 degrees and a cohesion of 55 psf. The test results for this <br />configuration exceeds the 21 degree friction angle and 0 cohesion that was established as <br />the minimum interface shear strength parameters, as identified in a January 9, 1996 letter <br />to Mr. Ron Roberts entitled "Interface Shear Strength Results for the Phase II Cresson <br />Project". Interface test results for the Drain Cover Fill / 100 mil smooth LLDPE /Low <br />Volume Solution Collection Fill contguration is presented in Attachment B. <br />OFFICES IN AUSTRALIA, CANADA, GERMANY. HGNGARY, ITA L'!. S,VEDEN. UNITED KINGDOM. UNITED STATES <br />