After the effective date of this regulation, a new surface water withdrawer must apply for and obtain a surface water withdrawal permit pursuant to this regulation before making a surface water withdrawal. A permitted surface water withdrawer that would like to increase its permitted withdrawal amount must apply to the Department for the additional amount and receive a permit modification prior to increasing the withdrawal; however, for a withdrawer seeking to increase its permitted withdrawal amount, only the proposed increase, over and above a prior permitted amount, will be evaluated under the appropriate criteria of this section, section E.
S.C. Code Regs. § 61-119.E.1