35 Ill. Adm. Code 212.456
Certain Small Foundries
Section 212
Section 212.456 Certain
Small Foundries
Sections 212.321 and 212.322 of
this Part shall not apply to foundry cupolas if all the following conditions
are met:
a) The cupola was in existence prior to April 15, 1967;
b) The cupola process weight rate is less than or equal to 20,000
lbs/hr;
c) The cupola as of April 14, 1972, either:
1) Is in compliance with the following allowable emissions from
small foundries covered by this Section:
Process
Weight Rate
Allowable
Emission Rate
lbs/hr
lbs/hr
1,000
3.05
2,000
4.70
3,000
6.35
4,000
8.00
5,000
9.58
6,000
11.30
7,000
12.90
8,000
14.30
9,000
15.50
10,000
16.65
12,000
18.70
16,000
21.60
18,000
23.40
20,000
25.10
(Board Note: For process weight rates not listed, straight line
interpolation between two consecutive process weight rates shall be used to
determine allowable emission rates.); or
2) Is in compliance with the terms and conditions of a variance
granted by the Pollution Control Board (Board); and construction has commenced
on equipment or modifications sufficient to achieve compliance with subsection
(c)(1) of this Section.