Consider the city of Baton Rouge, Louisiana, with a population of 400,000. The morning peak hour traffic is approximately 100,000 vehicles in an area 300 km2 with an average travel distance of 5 km from 7 a.m. to 10 a.m. daily. Assume each vehicle emits 2 g of CO for every 1 km traveled. Determine the CO concentration in the atmosphere at 9 a.m. The initial background concentration in the air prior to rush hour traffic is 5 mg/m3 and the average wind velocity is 3 m/s