.04 Particulate Matter.

A. Confined Emissions. A person may not cause or permit the discharge of confined emissions of particulate matter in excess of 0.03 gr/scfd (68.7 mg/dscm) from any iron or steel production installation.

B. Fugitive Emissions.

(1) A person may not cause or permit the discharge of fugitive emissions of particulate matter from an iron and steel production installation unless reasonable control methods are employed to minimize emissions. These methods include the use of hoods and control equipment to capture emissions, other control techniques, and process restrictions.

(2) Reasonable Control Methods Required to Satisfy §B(1) of this Regulation. Reasonable control methods required to satisfy §B(1) of this regulation are listed below for the installation specified, grouped by major buildings or structures. No other control methods are required for those buildings, structures, or installations. The reasonable control methods are:

(a) Blast furnaces constructed before January 1, 1977 (casthouse building): regular maintenance of iron notches, troughs, and slag runners;

(b) Blast furnaces constructed on or after January 1, 1977 (casthouse building): iron notch, trough, and slag runners—hoods and control equipment;

(c) Basic oxygen furnace shop building:

(i) Hot metal reladling—hoods and control equipment on the normal hot metal pit and flame suppression on the emergency pit,

(ii) Oxygen lance hole—suppression maintained on all furnace oxygen lance openings;

(iii) Furnace charging, refining, and tapping—use of a primary hood and control equipment with good operating practices and regular maintenance of all system components and ductwork;

(d) Top-charged electric arc furnaces: furnace charging, metal melting, refining, and tapping—hoods and control equipment;

(e) Argon-oxygen decarbonization vessels: vessel charging, refining, tapping, and alloy addition—hoods and control equipment;

(f) Sinter plant building: breaker box, windbox, hot and cold screens, entrance and exit from the sinter cooler, and material handling transfer points—hooded and exhausted into control equipment.

(3) All required reasonable control methods shall be designed to represent good engineering practice and constructed in accordance with the Department's permit to construct approval. The reasonable control methods employed shall be operated and maintained to comply with the visible emission standards set forth in Regulation .03A and B of this chapter and in accordance with any conditions imposed in the Department's permit to operate for that installation.

(4) Emissions from control equipment constructed pursuant to §B(1) and (2) of this regulation, shall meet the requirements of §A of this regulation and Regulation .03A(1) of this chapter.

(5) The discharge of emissions from air pollution control equipment constructed to capture coke oven pushing emissions in accordance with §B(2)(e) of this regulation may not exceed either 0.03 gr/scfd (68.7 mg/dscm) or 0.1 pound/ton (0.05 gram/kilometer) coke pushed, whichever is more restrictive. The pushing period is defined as commencing with the initial movement of coke and terminating with the hot car entering the quench tower.

C. Skull Cracker Oxygen Lancing. A person may not cause or permit the oxygen lancing of iron and steel scrap in excess of 400 tons each year. This oxygen lancing is limited to the months of December, January, and February.