Outside the city of granville, a small illegal dump is found containing old paint. the concentration of lead in the soil is 1,000 ppm in a primary area, a circular region with a radius of 10 meters centered at the dump. a secondary area with an additional width of 5 meters has a concentration of 30 ppm. diagram showing dump site outside granville. the primary area—a circle of soil with a radius of 10 meters and a lead concentration of 1,000 ppm—is surrounded by a secondary area, which has a width of 5 meters and a lead concentration of 30 ppm. lead can be treated at a cost of $10/m2 with phytoremediation with sunflowers or $50/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 illegal dumping.

explain a shortcoming of one of the methods you identified in part d.