ALBUQUERQUE, N.M. (AP) — The U.S. Postal Service Office of Inspector General has issued recommendations following an investigation into maintenance, safety and staffing concerns at postal facilities in New Mexico's largest city.The inspector general's audit was prompted by requests from members of the state's congressional delegation.Investigators found deficiencies at all 13 postal facilities in Albuquerque that were part of the audit. The problems ranged from minor oversight infractions to more serious structural issues.Officials with the postal workers union say the findings confirmed complaints made over the past year about dilapidated and unsanitary conditions and late mail delivery for certain customers.U.S. Sen. Tom Udall says filling vacancies and maintaining safe, secure facilities must be a top priority for the service. He plans to follow up to ensure the recommendations are implemented.