§ 3-15. Installations in which fuel is burned.

(a)

General provisions.

(1)

This section applies to installations in which fuel is burned for the primary purpose of producing steam, hot water, or hot air or other indirect heating of liquids, gases, or solids and, in the course of doing so, in which the products of combustion do not come into direct contact with process materials. Fuels include those such as coal, coke, lignite, coke breeze, gas, fuel oil, and wood, but do not include refuse. When any products or byproducts of a manufacturing process are burned for the same purpose or in conjunction with any fuel, the same maximum emission limitations shall apply.

(2)

The heat control of coal shall be determined according to ASTM method D-271-64 Laboratory Sampling and Analysis of Coal and Coke, ASTM method D-2015-66 Gross Calorific Value of Solid Fuel by the Adiabatic Bomb Calorimeter, their replacements or any other recognized method as approved by the director. The heat content of oil shall be determined according to ASTM method D-240-64 Heat of Combustion of Liquid Hydro-Carbons by Bomb Calorimeter, its replacement, or any other recognized method as approved by the director.

(3)

For the purposes of this section, the heat input shall be the aggregate heat content of all fuels whose products of combustion pass through a stack or stacks. The heat input value used shall be the equipment manufacturer's or designer's guaranteed maximum input, whichever is greater. The total heat input of all fuel-burning units at a plant or on premises shall be used for determining the maximum allowable amount of particulate matter that may be emitted.

(b)

Emission limitations.

(1)

Subject to the provisions of sections 3-7 and 3-19, no person shall cause or permit the emission of particulate matter in excess of that specified in the following table:

TABLE H-1
Emission Limits for Indirect Heating Equipment
Total Input 10 BTUs/hour	Allowable* lbs./hour/10 BTUs
10 or less	0.60
50	0.41
100	0.35
500	0.24
700	0.22
1,000	0.21
2,000	0.17
5,000	0.14
7,500	0.13
10,000 or more	0.12

 

*The allowable emission rate for equipment having intermediate heat input between 10 (10 ) BTUs and 10,000 (10 ) BTUs may be determined by the formula:

A	=	1.026
		I .233

 

(A equals 1.026 divided by I to the .233 power)

Where	A = the allowable emission rate in lbs./hour/10 BTUs
	I = the total heat input in 10 BTUs/hr

 

(2)

No person shall cause or permit the emission from any indirect heating equipment of visible air contaminants that equal or exceed the following:

a.

Equipment in operation prior to February 1, 1967, 40 percent opacity.

b.

Equipment in operation on or after February 1, 1967, 20 percent opacity.

c.

All indirect heating equipment shall also be subject to any more stringent opacity requirements established in section 3-18.

(3)

No person responsible for operation of any indirect heating equipment having a heat input of 250,000,000 BTUs per hour or greater shall cause or permit the emission of more than 1½ pounds of sulfur per million BTUs of heat input per hour.

(4)

No person responsible for operation of any gas- or oil-fired indirect heating equipment having a heat input of 250,000,000 BTUs per hour or greater shall cause or permit the emission of more than 0.30 pounds of nitrogen oxides per 1,000,000 BTUs of heat input per hour.

(5)

No person responsible for operation of any coal-fired indirect heating equipment having a heat input of 250,000,000 BTUs per hour or greater shall cause or permit the emission of more than 0.90 pounds of nitrogen oxides (calculated as NO ₂ ) per 1,000,000 BTUs of heat input per hour.

(c)

Exemptions.

(1)

Visible contaminant emissions of an opacity exceeding that allowed in subsection (b)(2) of this section shall not be considered a violation of subsection (b)(2) of this section; provided that the person responsible for operation of the indirect heating equipment demonstrates to the satisfaction of the department that this excessive opacity is solely the result of the presence of uncombined water in the plume.

(2)

Indirect heating equipment which was existing on January 1, 1972, shall be exempt from the provisions of subsections (b)(4) and (b)(5) of this section.

(3)

The provisions of this subsection (c) of this section shall be applicable only to indirect heating equipment in electric generating plants located in areas that have been identified as meeting the national primary ambient air quality standard for sulfur dioxide in the manner prescribed by the provisions of section 107(d) of the Federal Clean Air Act (42 USC 7407). Electric generating plants that are of the generating capacity specified in the following table, were existing on January 1, 1972, were capable of being fueled by coal, have been demonstrated to be able to maintain the national primary ambient air quality standards, and emit sulfur dioxide (SO ₂ ) at the limitations shown in the table shall be exempt from the provisions of subsection (b)(3) of this section:

Electric Generating Capacity (megawatts)	Emission Rate (grams SO 2 per second)
90	542.0
155	1465.0
228	3583.0

 

(d)

Exceptions due to breakdowns or scheduled maintenance. Those exceptions set forth in section 3-19 shall also apply to this section.

(Code 1964, § 2A-16; Code 1988, § 3-15; Ord. No. 52677, § 1, 2-28-1974)