Attorneys for Charles Rizzo Sr. say he admits his role in a scheme involving "phantom dumpster" invoices, but then point the finger at a business associate as the person who orchestrated the scam and has not faced any criminal charges.The allegations were made in a memorandum in advance of Rizzo's July 24 sentencing before federal Judge Robert Cleland in Port Huron for one count of conspiracy to commit mail fraud as part of the ongoing public corruption probe centered in Macomb County.