S.C. Code § 48-25-30
The General Assembly may combine any two or more of the forestry districts herein enumerated and designated into a compact forestry district and likewise may combine a forestry district or forestry districts with a compact forestry district and, also compact forestry districts with compact forestry districts. Provided, that the forestry districts or the compact forestry districts so combined, as herein provided, are contiguous. Provided, further, that the fire protection laws of the forests of any compact forestry district are equal and uniform throughout such compact forestry district. The first compact forestry district created and established by combining two or more contiguous forestry districts, as herein provided, for fire protection of the forests of such compact forestry district by equal and uniform fire protection laws of the forests throughout the compact forestry district shall be designated and enumerated as Compact Forestry District No. 1, and any following compact forestry districts shall be successively designated and enumerated in numerical order. The remaining forestry districts each composed of a single county shall be renumbered appropriately in successive numerical order as herein provided.
S.C. Code § 48-25-30