(1) if the purpose of the modification is to increase the nominal capacity of an activity or the total capacity of a facility (final disposal, storage) by more than 35%:(a) for a project covered by paragraph 1 of section 18: $1,661; or
(b) for a project covered by paragraph 2 of section 18: $3,322; and
(2) for any other modification not expressly covered by paragraph 1 that involves(a) a project covered by paragraph 1 of section 18: $1,234; or
(b) a project covered by paragraph 2 of section 18: $1,708.