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1 <br />May 2005 ! -3- 053-2386 <br />sampled directly from the material placed within the Cresson VLF. The material thicknesses of the <br />various geomembrane samples were measured using a micrometer with textured geomembrane <br />measurements per ASTM D5994, I'and the smooth geomembrane measurements per ASTM D5199. <br />11 <br />Samples were selected that were at or close to the industry standard minimum thickness for 80-mil <br />(72-mil minimum thickness) and 100-mil (90-mil minimum thickness) materials. <br />. 41 <br />J <br />tacs? ?a?oaot?.a Golder Associates