GEORGIA — International Paper announced that it will permanently close its Savannah and Riceboro plants by the end of September and cut some 1,100 hourly and salaried jobs. The closures of the company’s containerboard and packaging facilities in Savannah and its containerboard mill and timber and lumber operation in Riceboro are part of “actions to enhance its ability to serve and grow with customers,” the firm said. While eliminating its operations in Savannah and Riceboro, the firm said it will invest $250 million for renovations at its Riverdale mill in Selma, Alabama, to produce container board and sell its global cellulose. …The firm’s operations in Savannah and the surrounding area stretch back nearly 88 years. …Savannah Mayor Van Johnson expressed disappointment about the closure and concern for the 650 Savannah-based employees. …IP’s Simpson confirmed the Port Wentworth pulp mill will not close but had been sold.