S.C. Code Regs. § § 61-62.5.1.III

Current through Register Vol. 48, No. 10, October 25, 2024

Section 61-62.5.1.III - Sulfur Dioxide Emissions

A. General

The maximum allowable discharge of sulfur dioxide (SO2) from fuel burning operations shall be 2.3 lbs SO2 per million Btu input.

B. Classifications

1. The class into which a given county falls has been determined by mathematical atmospheric diffusion models and other methods which evaluate those factors which necessitate limits on sulfur dioxide emissions. These factors included but were not limited to:

(1) total sulfur dioxide emissions;

(2) spatial distribution of sulfur dioxide sources;

(3) effects of single, large sources;

(4) existing, measured air quality;

(5) topographical features of the county;

(6) contributions to background levels due to sources outside the county being considered;

(7) population density.

2. The assigned classifications will be reviewed periodically at intervals not to exceed three (3) years, and changes will be made as required. When a county is assigned to a more restrictive class, individual compliance schedules will be established in such a way that reasonable time will be allowed for the sources to make necessary changes in equipment and/or fuel contracts.

3. The following classifications are assigned:

a. Class I - Charleston County

b. Class II - Aiken County; Anderson County

c. Class III - All others

C. Allowable Discharges

Sulfur dioxide emissions from fuel burning sources located in various counties will not exceed the following limits:

1.	Counties in Class I
Rated Source Size	Maximum Allowable Emissions (1b SO2/million Btu input)
Up to and including 10 million Btu/hr	3.5
Greater than 10 million Btu/hr	2.3
2.	Counties in Class II
Rated Source Size	Maximum Allowable Emissions (1b SO2/million Btu input)
Up to 1000 million Btu/hr	3.5
1000 million Btu/hr and larger	2.3
3.	Counties in Class III
Rated Source Size	Maximum Allowable Emissions (1b SO2/million Btu input)
All	3.5

D. Special Provisions

If it can be demonstrated to the satisfaction of the Board that ambient air standards will not be contravened by a source, alone or in combination with other sources, a greater allowance for sulfur dioxide discharges may be made on a case by case basis.

S.C. Code Regs. § 61-62.5.1.III

Amended by State Register Volume 38, Issue No. 6, eff 6/27/2014.