A. No person shall cause, allow or permit the discharge of particulate matter into the atmosphere in any one hour from any basic oxygen process furnace in total quantities in excess of the amount calculated by one of the following equations:
1. For process sources having a process weight rate of 60,000 pounds per hour (30 tons per hour) or less, the maximum allowable emissions shall be determined by the following equation:
E = 3.59P 0.62
where:
E = The maximum, allowable particulate emission rate in pounds-mass per hour, and
P = The process weight rate in tons-mass per hour.
2. For process sources having a process weight rate greater than sixty thousand pounds per hour (thirty tons per hour), the maximum allowable emissions shall be determined by the following equation:
E = 17.31P 0.16
where "E" and "P" are defined as indicated in subdivision 1 of this subsection.
B. Emission values shall be calculated from the applicable equations and rounded off to two decimal places.
C. For purposes of this section, the total process weight from all similar units employing a similar type process shall be used in determining the maximum allowable emission of particulate matter.
D. The opacity of emissions subject to the provisions of this section shall not exceed twenty percent.
E. Monitoring of operations under this section is as follows:
1. The owner or operator of an affected facility shall maintain daily records of the time and duration of each steel production cycle.
2. The owner or operator of any affected facility that uses Venturi scrubber emission control equipment shall install, calibrate, maintain and continuously operate the following monitoring devices:
a. A monitoring device for the continuous measurement of the pressure loss through the Venturi constriction of the control equipment. The monitoring device shall be certified by the manufacturer to be accurate within ± two hundred fifty pascals (± one inch water).
b. A monitoring device for the continuous measurement of the water supply pressure to the control equipment. The monitoring device is to be certified by the manufacturer to be accurate within ± five percent of the design water supply pressure. The pressure sensor or tap shall be located close to the water discharge point.
3. All monitoring devices required in subdivision (F)(2) of this section shall be recalibrated annually and at other times as the control officer may require, in accordance with the procedures in Appendix 9 of A.A.C. Title 18, chapter 2.
F. The test methods and procedures required under this section are as follows:
1. The reference methods set forth in 40 CFR 60, Appendix A shall be used to determine compliance with the standards prescribed in subsection A of this section as follows:
a. Method 4 and 5 for the concentration of particulate matter;
b. Method 1 for sample and velocity traverses;
c. Method 2 for velocity and volumetric flow rate;
d. Method 3 for gas analysis.
2. For Method 5, the sampling time for each run shall continue for an integral number of cycles with total duration of at least 60 minutes. The sampling rate shall be at least 0.9 dscm/hr (0.53 dscf/min), except that shorter sampling times, when necessitated by process variables or other factors, may be approved by the control officer. A cycle shall start at the beginning of either the scrap preheat or the oxygen blow and shall terminate immediately prior to tapping.
(Ord. 1993-128 § 4 (part), 1993)