The Seattle City Employees' Retirement System is searching for an auditor. The $1.9 billion system would prefer a five-year contract, but will consider shorter periods, according to the RFP on the plan's website. Proposals are due Sept. 22. The RFP can be accessed at www.seattle.gov/retirement/rfp.htm. Mel Robertson, CIO, could not be reached for further details. Buck Consultants is the system's actuary, according to the 2006 Money Market Directory.