All of the following area located in Armstrong County shall be transferred from the statutorily designated Northern High Plains Boll Weevil Eradication Zone described at the Texas Agriculture Code, §74.1021(a) to the Northern Rolling Plains Boll Weevil Eradication Zone designated at §3.112 of this title (relating to Northern Rolling Plains Boll Weevil Eradication Zone): that part of Armstrong County that lies east and north of a line running along FM 294 from the Carson County line to State Highway 287; then running due south to Mulberry Creek; then running east along Mulberry Creek to the Donley County line.