Outside the city of Five Points, a small illegal dump is found…

Outside the city of Five Points, a small illegal dump is found…

Outside the city of Five Points, a small illegal dump is found containing

old computer monitors. The concentration of lead in the soil is 200 ppm in a primary area, a circular region with a radius of 7 meters centered at the dump. A secondary area with an additional width of 7 meters has a concentration of 20 ppm.

Lead can be treated at a cost of $9/m2 with phytoremediation with sunflowers or $45/m3 with removal of soil by excavation.

Show your work in each calculation below.

-What is the range of lead concentrations in mg/kg?
-What is the area of the primary area? What is the area of the secondary area?
-Evaluate the cost of remediation through phytoremediation and excavation to 1 meter for the primary and secondary area.
-Discuss two viable methods for reducing lead in computer monitors.
-Explain a shortcoming of one of the methods you identified in Part d.