The rate of percolation into a 12-m deep landfill is 248 mm/y. The refuse (i.e., waste) field capacity is 305 mm/m and the moisture content of the refuse is 180 mm/m. Calculate how many years it will take for the moisture front to move through the landfill and produce leachate. Round your answer to one term past the decimal point.

6-1. Assume that refuse has a C/N ratio of 24:1. If raw sludge with a C/N of 16:1 is to be added to refuse to reach a required C/N of 20:1, how much of each-refuse and sludge-is needed? (Note: Use a wet weight basis.)

rly sta 1 Clearly indicate your selection to answer the following? ( Calculate the km² area required by a stable community of 700,000 to provide 20 years of landfill disposal capacity for MSW generated by this population. The studies showed that the average generation rate is 1.5 kg/person/day. The in-place density of the waste will be 560 kg/m³. The landfill is to take an incomplete quadrilateral pyramid with 300 m upper base length. Also, it will take a symmetric 10 m depth and height under and above earth surface, respectively. The auxiliary facilities (buildings, roads, equipment, maintenance, storage, etc) will account for 25% of the actual site area. (volume of pyramid= [h(a+b²+ab)/3]), and to solve quadratic formula use: x = 2 a) 1.05 km² b) 1.35 km² c) 1.64 km² -b±√b2-4ac 2a d) 0.79 km² e) 1.98 km²

Question 4. Consider the liner system at the base and on the side slope of a landfill in figure below. State the function of each of the components. Give the common important / typical requirements or properties such as minimum thickness, permeability, etc. for each. Drainage Layer Geonet Compacted Clay Waste 00.0%% XXXX Subsoil geotextile geomembrane geomembrane