A solid waste manager estimates that the new community landfill will have an air space of 150,000yd3. Of this volume, 20% will be used for cap, liner, and cover material. The. community generates 660yd3 of solids waste per week. Assuming the density of the solid waste when collected is 200lb/yd3 and it is 1200lb/yd3 in the landfill after compaction, estimate the volume that will be used up at the landfill per week (yd3)