NR 440.688(3)(f)(f) On and after the sixtieth day after achieving the maximum production rate at which the affected facility will be operated, but not later than 180 days after initial startup as required under s. NR 440.11, no owner or operator may cause to be discharged into the atmosphere from any baghouse that controls emissions from only an individual, enclosed storage bin, stack emissions which exhibit greater than 7% opacity. NR 440.688(3)(g)(g) Owners or operators of multiple storage bins with combined stack emissions shall comply with the emission limits in par. (a) 1. and 2. NR 440.688(3)(h)(h) On and after the sixtieth day after achieving the maximum production rate at which the affected facility will be operated, but not later than 180 days after initial startup, no owner or operator may cause to be discharged into the atmosphere any visible emissions from: NR 440.688(3)(h)1.1. Wet screening operations and subsequent screening operations, bucket elevators, and belt conveyors that process saturated material in the production line up to the next crusher, grinding mill or storage bin. NR 440.688(3)(h)2.2. Screening operations, bucket elevators, and belt conveyors in the production line downstream of wet mining operations, where the screening operations, bucket elevators, and belt conveyors process saturated materials up to the first crusher, grinding mill or storage bin in the production line. NR 440.688(4)(a)(a) The cost of replacement of ore-contact surfaces on processing equipment may not be considered in calculating either the “fixed capital cost of the new components” or the “fixed capital cost that would be required to construct a comparable new facility” under s. NR 440.15. Ore-contact surfaces are crushing surfaces; screen meshes, bars, and plates; conveyor belts; and elevator buckets. NR 440.688(4)(b)(b) Under s. NR 440.15, the “fixed capital cost of the new components” includes the fixed capital cost of all depreciable components (except components specified in par. (a)) which are or will be replaced pursuant to all continuous programs of component replacement commenced within any 2-year period following August 31, 1983. NR 440.688(5)(5) Monitoring of operations. The owner or operator of any affected facility subject to the provisions of this section which uses a wet scrubber to control emissions shall install, calibrate, maintain and operate the following monitoring devices: NR 440.688(5)(a)(a) A device for the continuous measurement of the pressure loss of the gas stream through the scrubber. The monitoring device shall be certified by the manufacturer to be accurate within ± 250 pascals (± 1 inch water) gauge pressure and shall be calibrated on an annual basis in accordance with manufacturer’s instructions. NR 440.688(5)(b)(b) A device for the continuous measurement of the scrubbing liquid flow rate to the wet scrubber. The monitoring device shall be certified by the manufacturer to be accurate within ± 5% of design scrubbing liquid flow rate and shall be calibrated on an annual basis in accordance with manufacturer’s instructions. NR 440.688(6)(a)(a) In conducting the performance tests required in s. NR 440.08, the owner or operator shall use as reference methods and procedures the test methods in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 440.17, or other methods and procedures as specified in this subsection, except as provided in s. NR 440.08 (2). Acceptable alternative methods and procedures are given in par. (e). NR 440.688(6)(b)(b) The owner or operator shall determine compliance with the particulate matter standards in sub. (3) (a) as follows: NR 440.688(6)(b)1.1. Method 5 or Method 17 shall be used to determine the particulate matter concentration. The sample volume shall be at least 1.70 dscm (60 dscf). For Method 5, if the gas stream being sampled is at ambient temperature, the sampling probe and filter may be operated without heaters. If the gas stream is above ambient temperature, the sampling probe and filter may be operated at a temperature high enough, but no higher than 121°C (250°F), to prevent water condensation on the filter. NR 440.688(6)(c)1.1. In determining compliance with the particulate matter standards in sub. (3) (b) and (c), the owner or operator shall use Method 9 and the procedures in s. NR 440.11, with the following additions: NR 440.688(6)(c)1.a.a. The minimum distance between the observer and the emission source shall be 4.57 meters (15 feet). NR 440.688(6)(c)1.b.b. The observer shall, when possible, select a position that minimizes interference from other fugitive emission sources, for example, road dust. The required observer position relative to the sun (Method 9, Section 2.1) shall be followed. NR 440.688(6)(c)1.c.c. For affected facilities using wet dust suppression for particulate matter control, a visible mist is sometimes generated by the spray. The water mist may not be confused with particulate matter emissions and is not to be considered a visible emission. When a water mist of this nature is present, the observation of emission is to be made at a point in the plume where the mist is no longer visible. NR 440.688(6)(c)2.2. In determining compliance with the opacity of stack emissions from any baghouse that controls emissions only from an individual enclosed storage bin under sub. (3) (f), using Method 9, the duration of Method 9 observations shall be one hour (10 6-minute averages). NR 440.688(6)(c)3.3. When determining compliance with the fugitive emission standard for any affected facility described under sub. (3) (b), the duration of the Method 9 observations may be reduced from 3 hours (30 6-minute averages) to one hour (10 6-minute averages) only if both of the following conditions apply: NR 440.688(6)(c)4.4. When determining compliance with the fugitive emissions standard for any crusher at which a capture system is not used as described under sub. (3) (c), the duration of the Method 9 observations may be reduced from 3 hours (30 6-minute averages) to one hour (10 6-minute averages) only if both of the following conditions apply: NR 440.688(6)(d)(d) In determining compliance with sub. (3) (e), the owner or operator shall use Method 22 to determine fugitive emissions. The performance test shall be conducted while all affected facilities inside the building are operating. The performance test for each building shall be at least 75 minutes in duration, with each side of the building and the roof being observed for at least 15 minutes.