Gas prices fell to an average of $1.86 per gallon last week in South Carolina according to AAA, providing us with a little extra cash in our pockets. That’s great news indeed…but we had better not get used to it. The Environmental Protection Agency (EPA) is in the process of implementing three rules that a new study by the Beacon Hill Institute at Suffolk University and Palmetto Promise Institute says will substantially drive up the cost of energy in South Carolina.