All of Oakland County, Michigan, except that territory included in the jurisdiction of Local 5, Detroit, MI, except that portion of Holly and Groveland described as lying north of the Grange Hall Road which is in the jurisdiction of Local 542, Flint, MI.
All of the following counties: Sanilac, St. Clair, Wayne, Macomb, and in Oakland County the area lying south of 14 Mile Road including the towns of South Lyon, Novi, Farmington, Farmington Hills, Southfield and Royal Oak.
All of the following counties: Shiawassee, Genesee, Lapeer, Saginaw, Tuscola, Huron, Bay, Midland, Gladwin and Arenac. Also that portion of Holly and Groveland in Oakland County described as lying north of Grange Hall Road.