Colorado Public Employees Retirement Association, Denver, hired CitiStreet to be administrator and record keeper for its $830 million 401(k) plan, said Katie Kaufmanis, director of communications. ADP was record keeper and administrator of the plan. Separately, the system issued an RFP for an investment consultant for its $27 billion defined benefit plan. Incumbent Mercer Investment Consulting can rebid. Responses are due 4 p.m. MST Jan. 5. Fund officials expect to have finalists chosen by Jan.16 and a firm selected by Jan. 28. A copy of the RFP is available on the fund's website, www.copera.org.