Wisconsin Administrative Code
Department of Natural Resources
NR 400-499 - Environmental Protection - Air Pollution Control
Chapter NR 440 - Standards of performance for new stationary sources
Subchapter II - Standards of Performance
Section NR 440.21 - Incinerators

Universal Citation: WI Admin Code ยง NR 440.21

Current through August 26, 2024

(1) APPLICABILITY AND DESIGNATION OF AFFECTED FACILITY.

(a) The provisions of this section are applicable to each incinerator of more than 45 metric tons per day charging rate (50 tons/day), which is the affected facility.

(b) Any facility under par. (a) that commences construction or modification after August 17, 1971, is subject to the requirements of this section.

(2) DEFINITIONS. As used in this section, terms not defined in this subsection have the meanings given in s. NR 440.02.

(a) "Day" means 24 hours.

(b) "Incinerator" means any furnace used in the process of burning solid waste for the purpose of reducing the volume of the waste by removing combustible matter.

(c) "Solid waste" means refuse, more than 50% of which is municipal type waste consisting of a mixture of paper, wood, yard wastes, food wastes, plastics, leather, rubber and other combustibles, and noncombustible materials such as glass and rock.

(3) STANDARD FOR PARTICULATE MATTER. On and after the date on which the initial performance test is completed or required to be completed under s. NR 440.08, whichever date comes first, no owner or operator subject to the provisions of this section may cause to be discharged into the atmosphere from any affected facility any gases which contain particulate matter in excess of 0.18 g/dscm (0.08 gr/dscf) corrected to 12% CO2.

(4) MONITORING OF OPERATIONS. The owner or operator of any incinerator subject to the provisions of this section shall record the daily charging rates and hours of operation.

(5) TEST METHODS AND PROCEDURES.

(a) In conducting the performance tests required in s. NR 440.08, the owner or operator shall use as reference methods and procedures the test methods in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 440.17, or other methods and procedures as specified in this subsection, except as provided in s. NR 440.08(2).

(b) The owner or operator shall determine compliance with the particulate matter standard in sub. (3) as follows:
1. The concentration (C12) of particulate matter, corrected to 12% CO2, shall be computed for each run using the following equation:

C12 = Cs (12/%CO2)

where:

C12 is the concentration of particulate matter corrected to 12% CO2 g/dscm (gr/dscf)

Cs is the concentration of particulate matter, g/dscm (gr/dscf)

%CO2 is the CO2 concentration, percent dry basis

2. Method 5 shall be used to determine the particulate matter concentration (Cs). The sampling time and sample volume for each run shall be at least 60 minutes and 0.85 dscm (30 dscf).

3. The emission rate correction factor, integrated or grab sampling and analysis procedure of Method 3B shall be used to determine CO2 concentration (%CO2).
a. The CO 2 sample shall be obtained simultaneously with, and at the same traverse points as, the particulate run. If the particulate run has more than 12 traverse points, the CO2 traverse points may be reduced to 12 if Method 1 is used to locate the 12 CO2 traverse points. If individual CO2 samples are taken at each traverse point, the CO2 concentration (%CO2) used in the correction equation shall be the arithmetic mean of the sample CO2 concentrations at all traverse points.

b. If sampling is conducted after a wet scrubber, an "adjusted" CO2 concentration, (%CO2)adj, which accounts for the effects of CO2 absorption and dilution air, may be used instead of the CO2 concentration determined in this paragraph. The adjusted CO2 concentration shall be determined by either of the procedures in par. (c).

(c) The owner or operator may use either of the following procedures to determine the adjusted CO2 concentration.
1. The volumetric flow rates at the inlet and outlet of the wet scrubber and the inlet CO2 concentration may be used to determine the adjusted concentration, (%CO2)adj, using the following equation:

(%CO2)adj, = (%CO2) di (Qdi/Qdo)

where:

(%CO2)adj is the adjusted outlet CO2 concentration, percent dry basis

(%CO2)di is the CO2 concentration measured before the scrubber, percent dry basis

Qdi is the volumetric flow rate of effluent gas before the wet scrubber, dscm/min (dscf/min)

Qdo is the volumetric flow rate of effluent gas after the wet scrubber, dscm/min (dscf/min)

a. At the outlet, Method 5 is used to determine the volumetric flow rate (Qdo) of the effluent gas.

b. At the inlet, Method 2 is used to determine the volumetric flow rate (Qdi) of the effluent gas as follows: Two full velocity traverses are conducted, one immediately before and one immediately after each particulate run conducted at the outlet, and the results are averaged.

c. At the inlet, the emission rate correction factor, integrated sampling and analysis procedure of Method 3B is used to determine the CO2 concentration, (%CO2) di, as follows: At least 9 sampling points are selected randomly from the velocity traverse points and are divided randomly into 3 sets, equal in number of points; the first set of 3 or more points is used for the first run, the second set for the second run, and the third set for the third run. The CO2 sample is taken simultaneously with each particulate run being conducted at the outlet, by traversing the 3 sampling points, or more, and sampling at each point for equal increments of time.

2. Excess air measurements may be used to determine the adjusted CO2 concentration, (%CO2) adj, using the following equation:

(%CO2)adj = (%CO2) di [(100 + %EAi)/ (100 + %EAo)]

where:

(%CO2)adj is the adjusted outlet CO2 concentration, percent dry basis

(%CO2)di is the CO2 concentration at the inlet of the wet scrubber, percent dry basis

%EAi is the excess air at the inlet of the scrubber, percent

%EAo is the excess air at the outlet of the scrubber, percent

a. A gas sample is collected as in subd. 1. c. and the gas samples at both the inlet and outlet locations are analyzed for CO2, O2 and N2.

b. Equation 3B-3 of Method 3B is used to compute the percentages of excess air at the inlet and outlet of the wet scrubber.

Disclaimer: These regulations may not be the most recent version. Wisconsin may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.