At a time when members of Nevada County Consolidated Fire District’s board of directors are attempting to convince other fire agencies to surrender their resources to their management, the district is reportedly subject to a grand jury investigation for a litany of financial mismanagement. In a letter dated Jan. 8, James Robertson, a certified public accountant with the Grass Valley firm McSweeney & Associates, which audits the fire department, cites an impending investigation of the Nevada County Grand Jury as one of the reasons the firm increased the cost of its services for the district by $3,500. “The contentious tone …