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• Prepared subgrade (for excavated slopes) or approximately 4-ft thick foundation layer (for <br /> interface liner); <br /> • Needlepunched reinforced geosynthetic clay liner(GCL); <br /> • 60-mil, single-sided textured HDPE geomembrane(textured side placed against GCL); <br /> • Geocomposite drainage net(GDN); <br /> • One-foot thick protective operations layer to be placed concurrently with waste placement <br /> (maximum height of operations layer at any given time is 10 ft above refuse level) <br /> The northeastern portion of WMU FU-04 liner and LCRS consists of, from bottom to top: <br /> • Existing minimum 2-foot thick foundation layer compacted to a minimum 90 percent relative <br /> compaction(based on ASTM D1557); <br /> • Existing minimum 1-foot thick compacted clay liner with a maximum field hydraulic <br /> conductivity of 1 x 10-6 cm/sec; <br /> • Existing minimum 1-foot thick vegetative layer. Vegetation will be stripped; <br /> • Nonwoven geotextile filter fabric; <br /> • One half-foot thick blanket gravel and pipe network drainage layer with a minimum hydraulic <br /> conductivity of 0.1 cm/sec; <br /> • Nonwoven geotextile filter fabric; <br /> • One-foot thick protective operations layer <br /> The liner and LCRS in the transition zone between the toe of the WMU ART-03 southern refuse <br /> slope and the northern WMU FU-03 top of slope consists of,from bottom to top: <br /> • Geogrid; <br /> • 60-mil, double-sided textured HDPE geomembrane liner; <br /> • Cushion geotextile; <br /> • One half-foot thick gravel blanket drainage layer with a minimum hydraulic conductivity of <br /> 0.1 cm/sec; <br /> • Nonwoven geotextile filter fabric; <br /> • One half-foot thick general earthfill; <br /> • Needlepunched reinforced geosynthetic clay liner(GCL); <br /> • 60-mil, single-sided textured HDPE geomembrane (textured side placed against GCL); <br /> • Geocomposite drainage net(GDN); <br /> • One-foot thick protective operations layer <br /> FU-04 REPORT.DOC 5-2 <br />