HOLLAND — The Holland Rescue Mission said thank you to its longest-serving volunteer, 89-year-old Bill Plumert of Hudsonville, as he retired after 22 years of lending a hand at the shelter."I would have liked to keep going," said Plumert, "but some health concerns and the pandemic put the kibosh on that."Plumert is now busy with full-time care for his wife, Mary.Plumert started volunteering at the Mission in May 1998 after learning that mission director Darryl Bartlett needed volunteers