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..,., _. •,,.: R!? X;",s^ mom. .. > d.v. xca ;d-,S;..ac .r �e.:F <br /> harmless levels. <br /> ' The example analysis presented in this paper demonstrates that placing controlled fill <br /> or waste) above an existing landfill is a viable and economical method to protect a t.. <br /> s is <br /> reinforced liner system from the impact of potential excessive differential•n hasetwh lel the <br /> of particular importance because vertical expansions are onto select he dli wasteplacedplaced in the <br /> the Opportunity <br /> h that <br /> existing landfill is still operating. This ds a objects are not placed in the zone immediately <br /> upper zone of the existing landfill, �g <br /> below the base grades of the vertical expansion liner system. <br /> ACKNOWLEDGEMENTS <br /> The authors would like to thank the staff of Waste Management of North America, Inc. for <br /> providing the opportunity and the`means to perforin this study. Also, the authors would like to <br /> thank Kuantsai Lee and Leo Overmann of Golder Associates for their support.and for the time <br /> they provided to review this paper. _ <br /> 1508-Vancouver,Canada-Geosynthetics'93 <br />