Geography, 28.09.2019 04:20 hardwick744
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.
Answers: 2
Geography, 23.06.2019 15:50
Choose the factors that influence the climate of the u.s. northeast. distance from the equator proximity to large urban areas elevation secluded area distance from a large body of water
Answers: 1
Geography, 24.06.2019 04:20
Put these ecosystems in order of least biodiversity to most biodiversity 1. mediterranean forest 2. indonesian rain forest 3. arctic ocean
Answers: 1
Geography, 24.06.2019 04:30
The fact that similar fossils are found on both sides of the ocean is evidence of: a. global positioning. b. magnetic reversal. c. continental drift. d. oceanic drifts. select the best answer from the choices provided a b c d
Answers: 3
Outside the city of granville, a small illegal dump is found containing old paint. the concentration...
Mathematics, 20.02.2020 16:54
Computers and Technology, 20.02.2020 16:54
Computers and Technology, 20.02.2020 16:54
Computers and Technology, 20.02.2020 16:54
Business, 20.02.2020 16:54
Physics, 20.02.2020 16:54