Laserfiche WebLink
it becomes hydrated. <br /> M. All hydrated geo0Mthetic clay liner shall be removed and replaced by the <br /> GEOSYNTHETICS CONTRACTOR at no additional cost to the OWNER. <br /> Hydrated GCL is defined as material that has become soft as determined by <br /> squeezing the material with finger pressure, material that has exhibited swelling, or <br /> material that has a moisture content greater than 100 percent as determined by <br /> ASTM D2216 or ASTM D4643. Cause for replacement of the GCL due to <br /> exposure to moisture and subsequent hydration shall be determined at the QA/QC <br /> CONSULTANT's sole discretion. <br /> 3.6 SEAMS AND OVERLAPS <br /> A. On slopes steeper than 10 horizontal to 1 vertical, all geosynthetic clay liners shall <br /> be continuous down the slope; that is, no horizontal seams shall be allowed on the <br /> slope. <br /> B. No horizontal seams shall be allowed on the base and the crest of the landfill within <br /> 5 ft(1.5 m)of the toe or the crest of the slope. <br /> C. All geosynthetic clay liners shall have overlapped seams. Along the length(i.e., the <br /> sides) of the mat, the overlap shall be 12 in minimum. Along the width (i.e., the <br /> ends)of the mat,the overlap shall be 12 in minimum. <br /> D. The overlaps shall not be nailed or stapled to the subgrade. <br /> E. Granular bentonite shall be placed on the overlaps. <br /> 3.7 MATERIALS IN CONTACT WITH THE GEOSYNTHETIC CLAY LINER <br /> A. Installation on rough surfaces shall be carefully performed to minimize damage to <br /> the geosynthetic clay liner. <br /> B. Equipment used for placing soils shall not be driven directly on the geosynthetics <br /> overlying the geosynthetic clay liner. A minimum thickness of 1 ft of material is <br /> required between a low ground pressure dozer(such as a wide pad Caterpillar D-4 <br /> bulldozer or equivalent) and the geosynthetic clay liner. A minimum thickness of <br /> 3 ft of material is required between rubber-tired vehicles and the geosynthetic clay <br /> liner. In areas of heavy vehicle traffic, such as access ramps, the material <br /> thickness should be at least 3 ft. The following table shall be complied with <br /> during construction: <br /> ® Forward Landfill WMU FU-13 9 GEOSYNTHETIC CLAY LINER(GCL) <br /> 02777 <br />