TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE B: AIR POLLUTION
CHAPTER II: ENVIRONMENTAL PROTECTION AGENCY
PART
266
INTERPRETATION OF THE DEFINITION OF PROCESS WEIGHT RATE
Section
266.100 Introduction
266.105 Definition of Process Weight Rate
266.110 Allowable Emission Rate for Small Operations
266.115 Process Weight Rate for Surface Preparation and Finishing Operations
266.120 Process Weight Rate for Conveying Operations
266.125 Process Weight Rate for Heating or Heat Treating
266.130 Process Weight Rate for Smokehouses
266.135 Process Weight Rate for Catalytic Reactions, Calcining, or Other Chemical
Operations
266.140 Process Weight Rate for Fluxing
266.145 Process Weight Rate for Inoculation, Demagging, Degassing
266.150 Process Weight Rate for Stripping Operations
266.155 Process Weight Rate for Shakeout Operations
266.160 Process Weight Rate for Drying Operations
266.165 Process Weight Rate for Concrete Batch Plants
266.170 Process Weight Rate for Cement Silos
266.175 Process Weight Rate for Arc Welding
266.180 Process Weight Rate for Quenching
266.185 Process Weight Rate for Scarfing Operations
266.190 Operations to Which Process Weight Rate Rule Does Not Apply
APPENDIX A Rule into Section Table
AUTHORITY: Implementing Section 39(a) and of the Environmental Protection Act (Ill. Rev.
Stat. 1983, ch. 111 1/2, par. 1039(a))and authorized by Section 4 of the Environmental
Protection Act (Ill. Rev. Stat. 1983, ch. 111 1/2, par. and 1004).
SOURCE: Filed and effective December 29, 1977; codified at 8 Ill. Reg. 17882.
Section 266.100 Introduction
Particulate emission standards and limitations for new process emission sources are contained in
35 Ill. Adm. Code 212.321 and for sources existing as of April 14, 1972 at 35 Ill. Adm. Code
212.322. To determine whether source emissions exceed the allowable emission rates under
either of these sections, the process weight rate must be known.
Section 266.105 Definition of Process Weight Rate
Process weight rate is defined at 35 Ill. Adm. Code 211.122 as follows:
The actual weight or engineering approximation thereof of all materials except liquid and
gaseous fuels and combustion air, introduced into any process per hour. For a cyclical or
batch operation, the process weight rate shall be determined by dividing such actual
weight or engineering approximation thereof by the number of hours of operation
excluding any time during which the equipment is idle. for continuous processes, the
process weight rate shall be determined by dividing such actual weight or engineering
approximation thereof by the number of hours in one complete operation, excluding any
time during which the equipment is idle.
Section 266.110 Allowable Emission Rate for Small Operations
For process weight rates of less than 100 pounds per hour (45.35 kg/hr), the allowable emissions
rate is 0.55 pounds per hour (0.25 kg/hr).
Section 266.115 Process Weight Rate for Surface Preparation and Finishing Operations
The substrate is not included in calculating the process weight rate for any surface operation.
a) The process weight rate for painting operations is calculated by using the weight of the
paint and solvent used.
b) The process weight rate for hot or cold dip operations is calculated by using the weight of
the material desposited or of the make-up material added to the bath.
c) The process weight rate for plating operations is calculated by using the weight of the
material added to the bath, including solvents. If the solvent is water, the water is
included in the weight.
d) The process weight rate for lubricating operations is calculated by using the weight of the
lubricating material.
e) The process weight rate for degreasing operations is calculated by using the weight of the
degreasing material added to the bath.
f) The process weight rate for nail galvanizing by the tumbling method is caluclated by
using the weight of zinc powder and flux added to the nails.
Section 266.120 Process Weight Rate for Conveying Operations
Items of equipment used to classify or to separate materials in conveying operations are
considered emission sources, not control equipment.
a) The process weight rate for conveying operations using fluid conveyors is calculated by
using the weight of material being conveyed; water, air or other transport media is not
included.
b) The process weight rate for conveying operations using belts, screws, etc., is calculated
by using the weight of the material being conveyed.
Section 266.125 Process Weight Rate for Heating or Heat Treating
The process weight rate for heating or heat treating is calculated by using the weight of the
material to be heated or treated.
Section 266.130 Process Weight Rate for Smokehouses
The process weight rate for smokehouses is calculated by using the weight of the material
burned or of the liquid smoke used.
Section 266.135 Process Weight Rate for Catalytic Reactions, Calcining, or Other
Chemical Operations
The process weight rate for catalytic reactions, calcining, or other chemical operations is
caluclated by using the weight of the material added to the process. The oxygen, which
chemically combines (theoretically), is allowed.
Section 266.140 Process Weight Rate for Fluxing
The process weight rate for fluxing is calculated by using the weight of the flux used or the
make-up flux added to the bath.
Section 266.145 Process Weight Rate for Inoculation, Demagging, Degassing
The process weight rate for inoculation, demagging, degassing and related operations is
calculated by using the weight of the material added to the bath.
Section 266.150 Process Weight Rate for Stripping Operations
a) The process weight rate for chemical stripping operations is calculated by using the
weight of the material stripped plus the weight of the chemicals added to the bath or
expended during the operation.
b) The process weight rate for salt stripping operations is calculated by using the weight of
the material stripped plus the salts added to the bath.
Section 266.155 Process Weight Rate for Shakeout Operations
The process weight rate for shakeout operations is calculated by using the weight of the sand and
other materials freed from the casting.
Section 266.160 Process Weight Rate for Drying Operations
The process weight rate for drying operations is calculated by using the weight of the material to
be dried, as weighed entering the dryer.
Section 266.165 Process Weight Rate for Concrete Batch Plants
The process weight rate for concrete batch plants is calculated by using the weight of the cement,
aggregate and water as added at the batch plant.
Section 266.170 Process Weight Rate for Cement Silos
The process weight rate for cement silos is calculated by using the weight of the maximum
amount of cement transferred in any one-hour period.
Section 266.175 Process Weight Rate for Arc Welding
The process weight rate for arc welding is calculated by using the weight of the welding rod and
flux consumed.
Section 266.180 Process Weight Rate for Quenching
The process weight rate for quenching is calculated by using the weight of the quench material
added to the bath.
Section 266.185 Process Weight Rate for Scarfing Operations
The process weight rate for scarfing operations is calculated by using the weight of all material
removed by scarfing.
Section 266.190 Operations to Which Process Weight Rate Rule Does Not Apply
a) The process weight rate rule does not apply to pickling operations. The applicable
sulfuric acid mist regulations shall be used to determine allowable particulate emissions.
b) The process weight rate rule does not apply to thermal stripping operations. The
applicable incinerator regulations shall be used to determine allowable particulate
emissions.
c) The process weight rate rule does not apply to thermal wire reclaiming. The applicable
incinerator regulations shall be used to determine allowable particulate emissions.
Section 266.APPENDIX A Rule into Section Table
Rule Section Rule Section
1.0 Authority Note 3.05 266.135
2.0 266.100 3.06 266.140
266.105 3.07 266.190(c)
3.0 266.110 3.08 266.145
3.01(a) 266.115(a) 3.09(a) 266.190(b)
3.01(b) 266.115(b) 3.09(b) 266.150(a)
3.01(c) 266.115(c) 3.09(c) 266.150(b)
3.01(d) 266.190(a) 3.10 266.155
3.01(e) 266.115(d) 3.11 266.160
3.01(f) 266.115(e) 3.12 266.165
3.01(g) 266.115(f) 3.13 266.170
3.02(a) 266.120(a) 3.14 266.175
3.02(b) 266.120(b) 3.15 266.180
3.03 266.125 3.16 266.185
3.04 266.130