Exception. Notwithstanding §§B—E of this regulation and Regulation .09 of this chapter, and in the discretion of the Department, fees for minor improvements or revisions to existing permits may be waived or reduced. Application and Permit Fees. An applicant for a permit to install, materially alter, or materially extend a major water supply system shall pay the sum of the applicable fees set forth in the fee schedules in §§C—E of this regulation. Water Supply Plants. Fees for a new plant and fees for an existing plant at which two or more new unit processes are to be constructed are as follows: Fees for an existing plant at which only one new unit process is to be constructed are as follows: If no fee is due under §C(1) or (2) of this regulation, the fee shall be the lesser of the: Amount listed in §C(2) of this regulation for the design capacity of the particular plant; or Sum of the following: $125 for each unit process that is installed, materially altered, or materially extended, plus $125 for each component, which is not part of a unit process, that is installed, materially altered, or materially extended. In §C(3)(b) of this regulation, examples of components which are not part of a unit process include bar screens, intake structures, storage tanks, flow diversion structures, and chemical feed pumps. Water Distribution Lines. Fees for new lines and material alterations and material extensions to existing lines are set forth in §D(2) and (3) of this regulation. Water supply plant and pumping station fees are additional. Fees for distribution lines and appurtenances are as follows: Pumping Stations. Fees for new pumping stations and for material alterations and material extensions to existing pumping stations are set forth in the following fee schedule in this section: The combined design capacity of all lift stations applied for under the permit shall be used in calculating the design capacity.