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We believe this shear strength is achievable with proper selection and testing of the <br /> textured LLDPE geomembrane, GDN, geotextile, and soil components of the liner <br /> systems. However, it is important that the weakest interface shear strength be verified <br /> using direct shear testing for each of the possible interfaces in the liner system. This will <br /> consist of testing the soil to geocomposite drainage net, geocomposite drainage net to <br /> textured LLDPE, and textured LLDPE to soil interfaces. Technical specifications that <br /> will be developed for the construction of the final cover will provide testing <br /> requirements. If test results fall below the values specified above, the affected sections <br /> will be re-analyzed to determine the effect. <br /> The liner shear strength verification should be performed during selection of the various <br /> liner materials. Also, conformance testing should be performed before installation, using <br /> materials to be actually used in construction. <br /> 4.3 Interpretation of Interface Strength Data <br /> The following procedure is recommended while evaluating the measured shear strength <br /> test data: <br /> • If the measured large-displacement shear strength (corresponding to 3-inch shear <br /> displacement) at the normal load is at or greater than that specified in the previous <br /> section, the test results is acceptable. <br /> • If the measured large-displacement shear strength at the normal load is less than those <br /> specified in the previous section,the test result is not acceptable. <br /> LIMITATIONS <br /> The services described in this report were performed consistent with generally accepted <br /> professional consulting principles and practices. No other warranty, expressed or implied, is <br /> made. These services were performed consistent with our agreement with our client. This report <br /> is solely for the use and information of our client unless otherwise noted. Any reliance on this <br /> report by a third parry, with the exception of any regulatory agencies with jurisdiction over this <br /> landfill, is at such parry's sole risk. <br /> Opinions and recommendations contained in this report apply to conditions existing when <br /> services were performed and are intended only for the client, purposes, locations, time frames, <br /> and project parameters indicated. We are not responsible for the impacts of any changes in <br /> environmental standards, practices, or regulations subsequent to performance of services. We do <br /> not warrant the accuracy of information supplied by others, or the use of segregated portions of <br /> this report. <br /> Slope Stability Analysis Corral Hollow Landfill—Rev 2 5/20/2012 <br /> 7 <br />