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measure it was assumed that the upper 10-foot refuse section each yearly simulation would exist at its field capacity. The moisture content for underlying refuse layers was manually specified for each yearly simulation based on the results that were calculated for the previous year. As additional conservative measures, runoff was assumed to be impeded by a "fair stand of grass" though, for simulating transpiration, a bare ground (daily cover) condition was assumed. Current estimates are that the expanded Forward Landfill may operate for approximately 20 years. During this period, the landfill is expected to be developed within four major areas that have differing footprint areas, subgrade gradients, and anticipated refuse thickness as listed below: Waste Liner Footprint Development Area Thickness Gradient Area Ft. % Acres Intermediate Liner Area (existing Austin 90 5 75 Road Landfill New (existing undeveloped Forward 80 3 117 Landfill) Area New (existing undeveloped Austin 190 2 33 Road) Area Phase 10 (south of existing Forward 100 2 23 Landfill The HELP simulations were run for a period of 30 years; 20 years of active refuse disposal, and 10 years of the post-closure period with final cover and no positive or negative flux through the landfill's geomembrane cover. The simulations conservatively ignored placement of intermediate cover soils, and assumed that a one-foot thick LCRS drainage layer would be placed at a 2% gradient on top of a geomembrane layer at the base of refuse. LCRS collection pipe was assumed to exist on 200-foot centers. Model Results As shown below, the peak daily leachate that is calculated to be generated in the HELP analyses is approximately 0.027 inches. As shown in the graphs included Forward Landfill JTD 5-23 L\Allied\2000.193\Reports\JT D-PC PC MP702:Sec-5.0:5124 j 02 Revision 1:071/16/02 BRYAN A.STIRRAT 6 ASSOCIATES