A. Except for a physical change or change in the method of operation at a Class II or Class III source requiring a permit revision under Section 17.13.100, or a change subject to logging or notice requirements in subsection B or C, a change at a Class II or Class III source shall not be subject to revision, notice, or logging requirements under this chapter.
B. Except as otherwise provided in the conditions applicable to an emissions cap created under Section 17.13.070, the following changes may be made if the source keeps onsite records of the changes according to subsection I below:
1. Implementing an alternative operating scenario, including raw material changes;
2. Changing process equipment, operating procedures, or making any other physical change if the permit requires the change to be logged;
3. Engaging in any new insignificant activity listed in Sections 17.04.340(A)(113)(a) through (i) but not listed in the permit;
4. Replacing an item of air pollution control equipment listed in the permit with an identical (same model, different serial number) item. The control officer may require verification of efficiency of the new equipment by performance tests; and
5. A change that results in a decrease in actual emissions if the source wants to claim credit for the decrease in determining whether the source has a net emissions increase for any purpose. The logged information shall include a description of the change that will produce the decrease in actual emissions. A decrease that has not been logged is creditable only if the decrease is quantifiable, enforceable, and otherwise qualifies as a creditable decrease.
C. Except as provided in the conditions applicable to an emissions cap created under Section 17.13.070, the following changes may be made if the source provides written notice to the department in advance of the change as provided below:
1. Replacing an item of air pollution control equipment listed in the permit with one that is not identical but that is substantially similar and has the same or better pollutant removal efficiency: Seven days. The control officer may require verification of efficiency of the new equipment by performance tests;
2. A physical change or change in the method of operation that increases actual emissions more than ten percent of the major source threshold for any conventional pollutant but does not require a permit revision: Seven days;
3. Replacing an item of air pollution control equipment listed in the permit with one that is not substantially similar but that has the same or better efficiency: Thirty days. The control officer may require verification of efficiency of the new equipment by performance tests;
4. A change that would trigger an applicable requirement that already exists in the permit: Thirty days unless otherwise required by the applicable requirement;
5. A change that amounts to reconstruction of the source or an affected facility: Seven days. For purposes of this subsection, reconstruction of a source or an affected facility shall be presumed if the fixed capital cost of the new components exceeds fifty percent of the fixed capital cost of a comparable entirely new source or affected facility and the changes to the components have occurred over the twelve consecutive months beginning with commencement of construction; and
6. A change that will result in the emissions of a new regulated air pollutant above an applicable regulatory threshold but that does not trigger a new applicable requirement for that source category: Thirty days. For purposes of this requirement, an applicable regulatory threshold for a conventional air pollutant shall be ten percent of the applicable major source threshold for that pollutant.
D. For each change under subsection C, the written notice shall be by certified mail or hand delivery and shall be received by the control officer the minimum amount of time in advance of the change. Notifications of changes associated with emergency conditions, such as malfunctions necessitating the replacement of equipment, may be provided with less than required notice, but must be provided as far in advance of the change, or if advance notification is not practicable, as soon after the change as possible. The written notice shall include:
1. When the proposed change will occur,
2. A description of the change,
3. Any change in emissions of regulated air pollutants, and
4. Any permit term or condition that is no longer applicable as a result of the change.
F. The permit shield described in Section 17.11.080 shall not apply to any change made under this section, other than implementation of an alternate operating scenario under subsection (B)(1).
G. Notwithstanding any other part of this section, the control officer may require a permit to be revised for any change that, when considered together with any other changes submitted by the same source under this section over the term of the permit, constitutes a change under Section 17.13.100(A).
I. A copy of all logs required under subsection B shall be filed with the control officer within thirty days after each anniversary of the permit issue date. If no changes were made at the source requiring logging, a statement to that effect shall be filed instead.
1. Each log entry required by a change under Section 17.13.110(B) shall include at least the following information:
a. A description of the change, including:
i. A description of any process change.
ii. A description of any equipment change, including both old and new equipment descriptions, model numbers and serial numbers, or any other unique equipment number.
iii. A description of any process material change.
b. The date and time that the change occurred.
c. The provision of Section 17.13.110 that authorizes the change to be made with logging.
d. The date the entry was made and the first and last name of the person making the entry.
2. Logs shall be kept for five years from the date created. Logging shall be performed in indelible ink in a bound log book with sequentially numbered pages, or in any other form, including electronic format, approved by the control officer.
(Ord. 2017-20 § 2 (part), 2017)
Editor's note— Formerly § 17.12.240.