a$)$ Estimate the energy content of a solid waste sample with the following composition

based on $100kg$ of a waste sample

b$)$ Estimate the energy content on dry mass basis if the moisture content is $25\%.$

c$)$ Assuming ash to be $5\%,$ estimate the energy on ash free dry basis

d$)$ During the design of a waste management system, the Engineer visits the landfill to

determine the composition of the waste disposed at the site. A self$-$compacting truck

arrives at the landfill and the Engineer directs it to a designated area reserved for

sampling purposes for offloading.

Describe how the Engineer will advise his team on the procedure for sampling purposes

to determine the waste composition in the load.