Bremo Power facility will turn the old coal storage area into a grass field because______.

The trains that run through rural Virginia no longer deliver coal to the Bremo Power facility. The plant’s coal conveyor will soon be taken into parts. Greg Searcy, the plant’s operation manager, says the plan is to turn the old coal storage area into a grass field.
    Natural gas now powers the Bremo station. A $53 million project was undertaken to change the power source from coal to gas to comply with existing environmental regulations. The plant uses pressurized steam to generate electricity.
    (4)Burning natural gas instead of coal to heat water into steam reduces by 40 percent the plant’s carbon dioxide emissions, that most scientists say are major contributors to global warming.