$(10)$

$($i$)$ A junior site structural engineer, in charge of checking the structural integrity of scaffolding each week from various construction sites, was advised by his supervisor that the scaffolding at this site was inspected last week, met code specificaitons and it's not necesary to conduct this week's inspeciton and he should move on to the next site where he is urgently needed. Explain what the junior engineer should do considering the following three principles:

$($a$)$ Engineers shall hold paramount the health, safety and welfare of the public in the practice of their profession;

$($b$)$ Engineers shall act as faithful agents for their employers or clients and maintain confidentiality; and

$($c$)$ Engineers shall appropriately report any public works, engineering decisions, or practices that endanger the health, safety and welfare of the public. When, in an engineer's judgment, a significant risk to the public remains unresolved, that engineer may ethically make the concerns known publicly.

$(10)$

$($ii$)$ Population increases, in developing countries have caused a direct increase in fuel demands to meet increased energy consumption needs. Discuss three $(3)$ different types of pollution associated with the increased burning of fossil fuels and three $(3)$ 'soft' or 'hard' engineering solutions $(1$ for each pollution type$).$