Final answer:
The main reason for the company proposing to build a waste-burning power plant is to save money on coal purchases, to the tune of $2.8 million a year.
Step-by-step explanation:
The primary reason the company is proposing to build a waste-burning power plant is to save money on coal purchases. By burning waste as fuel instead of purchasing coal, the company is projected to save $2.8 million a year. This financial benefit aligns with the company's goal to reduce operational costs and increases profitability. Moreover, engineers have determined that the waste-burning plant will be environmentally sound, further justifying the investment in such a facility. Although there are secondary benefits such as reducing waste in landfills and the potential to sell the plant to a local electric utility, the main motivation is the significant cost savings on coal.