Hampden County Board of Retirement, Springfield, Mass., is searching for at least one private equity fund-of-funds managers to run a total of $6.8 million. The RFP is available on the website of the $220 million plans consultant, Segal Advisors, at www.segaladvisors.com. Proposals are due by 3 p.m. EST Oct. 9. Julianne Bartley, the boards executive director, was not available for comment. Rosemary Guillette, senior associate at Segal Advisors, did not return a call for comment.