District III shall include the northern portion of Whatcom County lying north of the western terminus of the Birch Bay-Lynden Road continuing east on that road to its intersection with Kok Road to Front Street in the city of Lynden, then east northeast to the Hannegan Road, thence southeast on Hannegan Road to Polinder Road, continuing east on Polinder Road, due east across the Nooksack River to Timon Road, then due east to Tom Road and continuing east on the north city limit of the town of Nooksack to Sorenson Road, and then due east along the section lines to the eastern border of Whatcom County.