Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 63, Subpt. JJJJJ, Tbl. 2 Table 2 to Subpart JJJJJ of Part 63—Operating Limits

1. Tunnel kiln equipped with a DLA

a. Maintain the average pressure drop across the DLA for each 3-hour block period at or above the average pressure drop established during the HF/HCl/Cl₂ performance test; or, if you are monitoring the bypass stack damper position, initiate corrective action within 1 hour after the bypass damper is opened allowing the kiln exhaust gas to bypass the DLA and complete corrective action in accordance with your OM&M plan; and

b. Maintain an adequate amount of limestone in the limestone hopper, storage bin (located at the top of the DLA), and DLA at all times; maintain the limestone feeder setting (on a per ton of fired product basis) at or above the level established during the HF/HCl/Cl₂ performance test in which compliance was demonstrated; and

c. Use the same grade of limestone from the same source as was used during the HF/HCl/Cl₂ performance test in which compliance was demonstrated; maintain records of the source and grade of limestone; and

d. Maintain no VE from the DLA stack.

2. Tunnel kiln equipped with a DIFF or DLS/FF.

a. If you use a bag leak detection system, initiate corrective action within 1 hour of a bag leak detection system alarm and complete corrective actions in accordance with your OM&M plan; operate and maintain the fabric filter such that the alarm is not engaged for more than 5 percent of the total operating time in a 6-month block reporting period; or maintain no VE from the DIFF or DLS/FF stack; and

b. Maintain free-flowing lime in the feed hopper or silo and to the APCD at all times for continuous injection systems; maintain the feeder setting (on a per ton of fired product basis) at or above the level established during the HF/HCl/Cl₂ performance test for continuous injection systems in which compliance was demonstrated.

3. Tunnel kiln equipped with a WS

a. Maintain the average scrubber liquid pH for each 3-hour block period at or above the average scrubber liquid pH established during the HF/HCl/Cl₂ performance test in which compliance was demonstrated; and

b. Maintain the average scrubber liquid flow rate for each 3-hour block period at or above the highest average scrubber liquid flow rate established during the HF/HCl/Cl₂ and PM/non-Hg HAP metals performance tests in which compliance was demonstrated.

4. Tunnel kiln equipped with an ACI system.

Maintain the average carbon flow rate for each 3-hour block period at or above the average carbon flow rate established during the Hg performance test in which compliance was demonstrated.

5. Tunnel kiln with no add-on control.

a. Maintain no VE from the stack.

b. Maintain the kiln process rate at or below the kiln process rate determined according to § 63.8445(g)(1).