(1) Area 1 description. (Cities and/or towns and Pullman vicinity.) The areas within a distance of one mile of the city limits of any incorporated city or town and the same distance from the center of any unincorporated town comprised of ten or more inhabited, closely grouped residences within Whitman County: Provided, That the area under this section shall also include all of the lands in Section 28 through 33, T15N, R45E; Sections 25, 26, 27, 34, 35, and 36, T15N, R44E; Sections 4, 5, 6, 7, 8, 9, 16, 17, 18, 19, 20, and 21, T14N, R45E; Sections 1, 2, 3, 10, 11, 12, 13, 14, 15, 22, 23, and 24, T14N, R44E.

(2) Area 1 restrictions. The use or application of low volatile ester formulations of use restricted herbicides is prohibited throughout the year: Provided, That the low volatile formulation of MCPA is allowed on and after November 1st through April 15th of each year.