CLEVELAND (Aug. 16)—The Board of Directors of The Geon Co. joined the board of M.A. Hanna Co. Aug. 15 in naming Thomas A. Waltermire, Geon chairman and CEO, as the first chairman and CEO of PolyOne Corp., the product of the two companies´ merger. Under an earlier arrangement, M.A. Hanna Chairman and CEO Philip D. Ashkettle was slated to lead PolyOne, with Waltermire to succeed him as PolyOne CEO in 2002 and its chairman in 2004. The announcement of Ashkettle´s immediate departure hastens the plan. Despite the change, PolyOne is expected to begin operations Sept. 1, assuming a favorable vote by Geon and M.A. Hanna shareholders on Aug. 29.