An agency is considering two different alternatives for a project:

The inputs for the analysis are given below:

Analysis period is $40$ years.

$7000$ vehicles a day.

Lane width is $4$ yards.

Discount rate is $1\mathrm{.}2\%$

$1760$ yards in a mile.

Cost and emissions of alternatives are given below:

Assuming equal cost and impact for construction and end of life, please fill the

following table and answer the following questions:

What are the discounted agency and user costs of alternative $1$ and $2$ in terms

of $\frac{\text{\$}}{?}$ lane $-$ mile

What is the environmental impact of this project in terms of greenhouse gas

emissions $($GHG$)$ in terms of $kgC{O}_2\frac{e}{?}$ lane $-$ mile

What are the system boundaries for both LCA and LCCA? What are the life$-$

cycle stages that are considered? What life$-$cycle stages are not considered?

Which alternative do you think is preferable given the values you calculated?

Is this analysis comprehensive? Is there additional analysis that should be

conducted for other life$-$cycle stages? How would you calculate the impacts of

those stages?

Are there any social impact indicators that would change between these two

alternatives? What would they be$?$ Who would be the stakeholders for these

changes? How do you measure and quantify the impacts of these changes and

communicate them effectively?