PURPOSE: This regulation restricts the emission of particulate matter in the source gas of an operation or activity except where 10 CSR 10-4.040, 10 CSR 10-4.080 and/or 10 CSR 10-6.070 would be applied.

1. (1) General Provisions.

   1. (A) This regulation applies to any operation, process or activity except the burning of fuel for indirect heating in which the products of combustion do not come into direct contact with process materials and except the burning of refuse and except the processing of salvageable material by burning.

   2. (B) Process weight means the total weight of all materials introduced into a source operation, including solid fuels, but excluding liquids and gases used solely as fuels and excluding air introduced for purposes of combustion.

      1. 1. Process weight rate means a rate

established as follows:

1. A. For continuous or long run steady

state source operations, the total process weight for the entire period of continuous operation or for a typical portion, divided by the number of hours of the period or portion; and

1. B. For cyclical or batch source opera-

tions, the total process weight for a period which covers a complete operation or an integral number of cycles, divided by the hours of actual process operation during the period.

1. 2. Where the nature of any process or

operation or the design of any equipment is to permit more than one (1) interpretation of this section, that interpretation which results in the minimum value for allowable emission shall apply.

1. (C) The amount of particulate matter emitted shall be determined as specified in 10 CSR 10-6.030(5). Any other method which is in accordance with good professional practice may be used with the consent of the staff director.

1. (2) Emission Limitations.

   1. (A) Except as provided for in subsection (2)(B) and section (3) of this regulation, no person shall cause, suffer, allow or permit the emission of particulate matter in any one (1) hour from any source in excess of the amount shown in the following table for the process weight allocated to that source.

      Process Weight Rate

   Lb/Hr Tons/Hr

   1,000 1,500 2,000 2,500 3,000

   3,500 4,000 5,000 6,000 7,000

   8,000 9,000 10,000 12,000 16,000

   18,000 20,000 30,000 40,000 50,000

   60,000 70,000 80,000 Table I

   Rate of Emission Lb/Hr

0.05 0.10 0.20 0.30 0.40

0.50 0.75 1.00 1.25 1.50

1.75 2.00 2.50 3.00 3.50

4.00 4.50 5.00 6.00 8.00

9.00 10.00 15.00 20.00 25.00

30.00 35.00 40.00 10 CSR 10-4

Process Weight Rate

Lb/Hr Tons/Hr 90,000 45.00 100,000 50.00 120,000 60.00 140,000 70.00 160,000 80.00 200,000 100.00

1,000,000 500.00 2,000,000 1,000.00 6,000,000 3,000.00

Interpolation of the data in this table for process weight rates up to 60,000 lb/hr shall be accomplished by use of E=4.10P0.67 and interpolation and extrapolation of the data for process weight rates in excess of 60,000 lb/hr shall be accomplished by use of the equation:

E=55.0P0.11–40

where E=rate of emission in lb/hr; and P=process weight rate in tons/hr.

1. (B) The limitations established by subsection (2)(A) of this regulation shall not require the reduction of particulate matter concentration, based on the source gas volume, below the concentration specified in Table II follow-

0.551 ing for the volume; provided that, for the pur- 0.877 poses of this subsection (2)(B), the person 1.40 responsible for the emission may elect to sub- 1.83 stitute a volume determined according to the 2.22 provisions of subsection (2)(C) of this regulation and provided further that the burden of 2.58 showing the source gas volume or other vol- 3.38 ume substituted, including all the factors 4.10 which determine volume and the methods of 4.76 determining and computing volume, shall be on the person seeking to come within the pro- 5.38 visions of this section. 5.96 Table II 6.52 Source Gas Concentration 7.58 Volume, Standard Grain Per 8.56 Cubic Foot Standard 9.49 Per Minute Cubic Foot 7,000 or less 8,000 10.4 9,000 11.2 10,000 12.0 20,000 13.6 30,000 16.5 40,000 50,000 17.9 60,000 19.2 80,000 100,000 25.2 120,000 30.5 140,000 35.4 160,000 180,000 40.0 200,000 41.3 300,000 42.5 400,000 Rate of Emission Lb/Hr 43.6 44.6 46.3 47.8 49.0 51.2 69.0 77.6 92.7

the equation

0.100 0.096 0.092 0.089 0.071 0.062 0.057 0.053 0.050 0.045 0.042 0.040 0.038 0.036 0.035 0.034 0.030 0.027 Table II Source Gas Concentration Volume, Standard Grain Per Cubic Foot Standard Per Minute Cubic Foot 500,000 0.025 600,000 0.024 800,000 0.021 1,000,000 or more 0.020

1. (C) Any volume of gases passing through and leaving an air pollution abatement operation may be substituted for the source gas volume of the source operation served by the air pollution abatement operation, for the purposes of subsection (2)(B) of this regulation, provided the air pollution abatement operation emits no more than forty percent (40%) of the weight of particulate matter entering the operation; and provided further that the substituted volume shall be corrected to standard conditions and to a moisture content no greater than that of any gas stream entering the air pollution abatement operation.
2. (D) Notwithstanding the provisions of subsections (2)(A) and (B) of this regulation, no person may cause, allow or permit the emission of particulate matter from any source in a concentration in excess of 0.30 grain per standard cubic foot of exhaust gas.

1. (3) Exceptions.

   1. (A) The provisions of subsections (2)(A)–
2. (D) of this regulation shall not apply to existing grey iron cupolas which have a single melting cycle operated no more than twelve
3. (12) hours in any consecutive twenty-four

4. (24) hours and no more than sixty (60) hours in any consecutive seven (7) days.

   1. 1. All existing grey iron cupolas shall be

equipped with gas cleaning devices and so operated as to remove not less than eightyfive percent (85%) weight of all the particulate matter in the cupola discharge gases or release not more than 0.4 grain of particulate matter per standard cubic foot of discharge gas, whichever is more stringent.

1. 2. All gases, vapors and gas entrained

effluents from cupolas shall be incinerated at a temperature not less than twelve hundred degrees Fahrenheit (1200°F) for a period of not less than 0.3 seconds.

1. (B) This regulation shall not apply to the emissions from the—

   1. 1. Grinding, crushing and classifying

operations at a rock quarry; or

1. 2. Receiving and shipping of whole

grain from or into a railroad or truck transportation source at a grain elevator.

AUTHORITY: section 203.050, RSMo 1986. Original rule filed Dec. 5, 1969, effective Dec. 15, 1969. Amended: Filed June 30, 1975, effective July 10, 1975. Amended: Filed March 15, 1979, effective Nov. 11, 1979. Amended: Filed Oct. 13, 1983, effective March 12, 1984.