A little over 100 volunteers are needed on committees and boards in Belmont, according to town officials. Of that number, 77 openings are from committee members whose terms expire this year and who are eligible for reappointment; 28 are outright vacancies. “That’s actually a huge number,” said Chair Taylor Yates at a recent Select Board meeting. “Professional recruiters recruit less people per year. We have a huge number of committees; we also have a lot of very large committees.” The…