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

NR 440.21(5)(c)1.a. a. At the outlet, Method 5 is used to determine the volumetric flow rate (Qdo) of the effluent gas.

NR 440.21(5)(c)1.b. 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.

NR 440.21(5)(c)1.c. 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.

NR 440.21(5)(c)2. 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

NR 440.21(5)(c)2.a. 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.

NR 440.21(5)(c)2.b. 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.

NR 440.21 History History: Cr. Register, January, 1984, No. 337, eff. 2-1-84; am. (2) (intro.), Register, September, 1990, No. 417, eff. 10-1-90; r. and recr. (5), Register, July, 1993, No. 451, eff. 8-1-93; CR 06-109: renum. (3) (a) to be (3) and am., renum. (4) (a) to be (4), am. (5) (b) 1. and 3. a. Register May 2008 No. 629, eff. 6-1-08.

NR 440.215 NR 440.215 Municipal waste combustors for which construction is commenced after December 20, 1989 and on or before September 20, 1994.

NR 440.215(1) (1) Applicability.

NR 440.215(1)(a) (a) The affected facility to which this section applies is each MWC unit with an MWC unit capacity greater than 225 megagrams per day (250 tons per day) of MSW for which construction, modification or reconstruction is commenced as follows:

NR 440.215(1)(a)1. 1. Construction is commenced after December 20, 1989 and on or before September 20, 1994.

NR 440.215(1)(a)2. 2. Modification or reconstruction is commenced after December 20, 1989 and on or before June 19, 1996.

NR 440.215(1)(c) (c) Any unit combusting a single-item waste stream of tires is exempt from this section if the owner or operator of the unit does the following:

NR 440.215(1)(c)1. 1. Notifies the department of an exemption claim.

NR 440.215(1)(c)2. 2. Provides data documenting that the unit qualifies for the exemption.

NR 440.215(1)(d) (d) Any cofired combustor, as defined under sub. (2), located at a plant that meets the capacity specification in par. (a) is exempt from other requirements of this section if the owner or operator of the cofired combustor does all of the following:

NR 440.215(1)(d)1. 1. Notifies the department of an exemption claim.

NR 440.215(1)(d)2. 2. Provides a copy of the federally enforceable permit specified in the definition of cofired combustor under sub. (2).

NR 440.215(1)(d)3. 3. Keeps a record on a calendar quarter basis of the weight of MSW combusted at the cofired combustor and the weight of all other fuels combusted at the cofired combustor.

NR 440.215(1)(e) (e) Any cofired combustor that is subject to a federally enforceable permit limiting the operation of the combustor to no more than 225 megagrams per day (250 tons per day) of MSW is exempt from this section.

NR 440.215(1)(f) (f) Physical or operational changes made to an existing MWC unit primarily for the purpose of complying with emission guidelines under 40 CFR part 60 subpart Cb are not considered a modification or reconstruction and do not result in an existing MWC unit becoming subject to this section.

NR 440.215(1)(g) (g) A qualifying small power production facility, as defined in section 3 (17) (C) of the Federal Power Act (16 USC 796 (17) (C)), that burns homogeneous waste, such as automotive tires or used oil, but not including refuse-derived fuel, for the production of electric energy is exempt from this section if the owner or operator of the facility notifies the department of an exemption claim and provides data documenting that the facility qualifies for this exemption.