Solved solution for the transportation model is developed in Excel File attached with Assignment.
After solving the transportation model for minimizing the cost of handling and optimum solution is obtained that costs total for $2,822. Optimal solution suggest waste disposal as follows to attain optimal solution.
Factory in Kingsport should dispose it 35 units in Whitewater.
Factory in Danville needs to dispose 26 units in Duras.
Factory in Macon needs to dispose 42 units in Duras.
Factory in Selma should dispose 1 unit in Whitewater and 52 Unit in Los Canos.
Factory in Columbus needs to dispose its whole waste at Whitewater.