All rigs and commercial vehicles used by licensed water well contractors or certified pump contractors in well construction and/or pump installation operations shall be permanently and prominently marked on each side of the rigs or vehicles for identification with name of the person, firm or corporation, and letters "GA Lic." and/or "GA Cert." as appropriate with the water well contractor's license number or pump contractor's certificate number. The letters and numerals shall be bold in print, on a background of contrasting color, and not less than two (2) inches in height.
Ga. Comp. R. & Regs. R. 770-5-.05
Authority O.C.G.A. Sec. 12-5-120et seq.