The $670 million Plymouth County Retirement Association has issued a request for proposals from fund of hedge funds managers for a mandate of up to $35 million. Separate account managers need not apply.

Some key requirements for prospective managers include at least five years’ performance history, registration with the Securities and Exchange Commission and at least $400 million in assets under management as of March 31.

Submissions for the RFP, which can be accessed on Wainright Investment Counsel’s Web site, is May 7. Plymouth’s board has until March 31, 2009, to either choose a firm or firms, or determine that none will be selected.