Section NR 447.03 - Asbestos mills(1) Each owner or operator of an asbestos mill shall either discharge no visible emissions to the outside air from that asbestos mill, including fugitive sources, or use the methods specified by s. NR 447.15 to clean emissions containing particulate asbestos material before they escape to, or are vented to, the outside air.(2) Each owner or operator of an asbestos mill shall meet all of the following requirements: (a) Monitor each potential source of asbestos emissions from any part of the mill facility, including air cleaning devices, process equipment and buildings that house equipment for material processing and handling, at least once each day, during daylight hours, for visible emissions to the outside air during periods of operation. The monitoring shall be by visual observation of at least 15 seconds duration per source of emissions.(b) Inspect each air cleaning device at least once each week for proper operation and for changes that signal the potential for malfunction, including, to the maximum extent possible without dismantling other than opening the device, the presence of tears, holes and abrasions in filter bags and for dust deposits on the clean side of bags. For air cleaning devices that cannot be inspected on a weekly basis according to this section, submit to the department, and revise as necessary, a written maintenance plan to include, at a minimum, the following: (c) Maintain records of the results of visible emissions monitoring and air cleaning device inspections and include the following:1. Date and time of each inspection.2. Presence or absence of visible emissions.3. Condition of fabric filters, including presence of any tears, holes and abrasions.4. Presence of dust deposits on clean side of fabric filters.5. Brief description of corrective actions taken, including date and time.6. Daily hours of operation for each air cleaning device.(d) Furnish upon request, and make available at the affected facility during normal business hours for inspection by the department, all records required under this section.(e) Retain a copy of all monitoring and inspection records for at least 2 years.(f) Submit quarterly a copy of visible emission monitoring records to the department if visible emissions occurred during the report period. Quarterly reports shall be postmarked by the 30th day following the end of the calendar quarter.Wis. Admin. Code Department of Natural Resources NR 447.03
Cr. Register, October, 1992, No. 442, eff. 11-1-92.