NR 463.14(13)(f) (f) Operate each sidewell furnace such that both of the following are met:

NR 463.14(13)(f)1. 1. The level of molten metal remains above the top of the passage between the sidewell and hearth during reactive flux injection, unless emissions from both the sidewell and the hearth are included in demonstrating compliance with all applicable emission limits.

NR 463.14(13)(f)2. 2. Reactive flux is added only in the sidewell, unless emissions from both the sidewell and the hearth are included in demonstrating compliance with all applicable emission limits.

NR 463.14(14) (14) Group 1 furnace without add-on air pollution control devices. The owner or operator of a group 1 furnace, including a group 1 furnace that is part of a secondary aluminum processing unit, without add-on air pollution control devices shall do all of the following:

NR 463.14(14)(a) (a) Maintain the total reactive chlorine flux injection rate for each operating cycle or time period at or below the average rate established during the performance test for the operating cycle or time period.

NR 463.14(14)(b) (b) Operate each furnace in accordance with the work practice and pollution prevention measures documented in the OM&M plan and within the parameter values or ranges established in the OM&M plan.

NR 463.14(14)(c) (c) Operate each group 1 melting and holding furnace subject to the emission standards in s. NR 463.13 (9) (b) using only clean charge as the feedstock.

NR 463.14(15) (15) Group 2 furnace. The owner or operator of a new or existing group 2 furnace shall do both of the following:

NR 463.14(15)(a) (a) Operate each furnace using only clean charge as the feedstock.

NR 463.14(15)(b) (b) Operate each furnace using no reactive flux.

NR 463.14(16) (16) Corrective action. When a process parameter or add-on air pollution control device operating parameter deviates from the value or range established during the performance test and incorporated in the OM&M plan, the owner or operator shall initiate corrective action. Corrective action shall restore operation of the affected source or emission unit, including the process or control device, to its normal or usual mode of operation as expeditiously as practicable in accordance with good air pollution control practices for minimizing emissions. Corrective actions taken shall include follow-up actions necessary to return the process or control device parameter level to the value or range of values established during the performance test and steps to prevent the likely recurrence of the cause of a deviation.

NR 463.14 History History: CR 04-023: cr. Register December 2008 No. 636, eff. 1-1-09; corrections in (1) (b), (c), (d) and (8) (a) 2. made under s. 13.92 (4) (b) 7., Stats., Register December 2008 No. 636.

NR 463.15 NR 463.15 Monitoring requirements.

NR 463.15(1) (1) Summary. On and after the compliance date established by s. NR 463.115, the owner or operator of a new or existing affected source or emission unit shall monitor all control equipment and processes according to the requirements in this section. Monitoring requirements for each type of affected source and emission unit are summarized in the following table.

Table 3

Summary of Monitoring Requirements for New and Existing Affected Sources and Emission Units

a Thermal chip dryers, scrap dryers, delacquering kilns, dross-only furnaces, in-line fluxers and group 1 furnaces or melting and holding furnaces

b The department may approve measurement devices of alternative accuracy, for example in cases where flux rates are very low and costs of meters of specified accuracy are prohibitive; or where feed or charge weighing devices of specified accuracy are not practicable due to equipment layout or charging practices.

c Non-turboelectric bag leak detectors shall be installed and operated in accordance with manufacturers’ specifications.

d OM&M plan- Operation, maintenance, and monitoring plan.

e The department may approve of other alternatives including load cells for lime hopper weight, sensors for carrier gas pressure, or HCl monitoring devices of fabric filter outlet.

NR 463.15(2) (2) Operation, maintenance, and monitoring plan. The owner or operator shall prepare and implement for each new or existing affected source and emission unit, a written operation, maintenance and monitoring (OM&M) plan. The owner or operator of an existing affected source shall submit the OM&M plan to the department no later than the compliance date established by s. NR 463.115 (1). The owner or operator of any new MACT source subject to this subchapter shall submit the OM&M plan to the department within 90 days after a successful initial performance test under s. NR 463.16 (2) or within 90 days after the compliance date established by s. NR 463.115 (2) if no initial performance test is required. The plan shall be accompanied by a written certification by the owner or operator that the OM&M plan satisfies all requirements of this section and is otherwise consistent with the requirements of this subchapter. The owner or operator shall comply with all of the provisions of the OM&M plan as submitted to the department, unless and until the plan is revised in accordance with the following procedures. If the department determines at any time after receipt of the OM&M plan that any revisions of the plan are necessary to satisfy the requirements of this subchapter, the owner or operator shall promptly make all necessary revisions and resubmit the revised plan. If the owner or operator determines that any other revisions of the OM&M plan are necessary, the revisions may not become effective until the owner or operator submits a description of the changes and a revised plan incorporating them to the department. Each plan shall contain all of the following information:

NR 463.15(2)(a) (a) Process and control device parameters to be monitored to determine compliance, along with established operating levels or ranges, as applicable, for each process and control device.

NR 463.15(2)(b) (b) A monitoring schedule for each affected source and emission unit.

NR 463.15(2)(c) (c) Procedures for the proper operation and maintenance of each process unit and add-on control device used to meet the applicable emission limits or standards in s. NR 463.13.

NR 463.15(2)(d) (d) Procedures for the proper operation and maintenance of monitoring devices or systems used to determine compliance, including the following:

NR 463.15(2)(d)1. 1. Calibration and certification of accuracy of each monitoring device, at least once every 6 months, according to the manufacturer’s instructions.

NR 463.15(2)(d)2. 2. Procedures for the quality control and quality assurance of continuous emission or opacity monitoring systems as required by the general provisions in ch. NR 460.

NR 463.15(2)(e) (e) Procedures for monitoring process and control device parameters, including procedures for annual inspections of afterburners, and if applicable, the procedure to be used for determining charge or feed or throughput weight if a measurement device is not used.