NR 666.100(4)(b)
(b) A hazardous waste meeting either of the following criteria is not processed solely for metal recovery:
NR 666.100(4)(b)1.
1. The hazardous waste has a total concentration of organic compounds listed in ch.
NR 661 Appendix VIII, exceeding 500 ppm by weight, as-fired, and so is considered to be burned for destruction. The concentration of organic compounds in a waste as-generated may be reduced to the 500 ppm limit by bona fide treatment that removes or destroys organic constituents. Blending for dilution to meet the 500 ppm limit is prohibited and documentation that the waste has not been impermissibly diluted shall be retained in the records required by par.
(a)3. NR 666.100(4)(b)2.
2. The hazardous waste has a heating value of 5,000 Btu/lb or more, as-fired, and so is considered to be burned as fuel. The heating value of a waste as-generated may be reduced to below the 5,000 Btu/lb limit by bona fide treatment that removes or destroys organic constituents. Blending for dilution to meet the 5,000 Btu/lb limit is prohibited and documentation that the waste has not been impermissibly diluted shall be retained in the records required by par.
(a) 3. NR 666.100(4)(c)
(c) To be exempt from ss.
NR 666.102 to
666.111, an owner or operator of a lead or nickel-chromium or mercury recovery furnace (except for owners or operators of lead recovery furnaces subject to regulation under the Secondary Lead Smelting national emission standards for hazardous air pollutants (NESHAP)) or a metal recovery furnace that burns baghouse bags used to capture metallic dusts emitted by steel manufacturing, shall provide a one-time written notice to the department identifying each hazardous waste burned and specifying whether the owner or operator claims an exemption for each waste under this paragraph or par.
(a). The owner or operator shall comply with par.
(a) for those wastes claimed to be exempt under par.
(a) and shall comply with the requirements below for those wastes claimed to be exempt under this paragraph.
NR 666.100(4)(c)1.a.
a. A waste listed in ch.
NR 666 Appendix IX shall contain recoverable levels of lead, a waste listed in ch.
NR 666 Appendix XII shall contain recoverable levels of nickel or chromium, a waste listed in ch.
NR 666 Appendix XIII shall contain recoverable levels of mercury and contain less than 500 ppm of ch.
NR 661 Appendix VIII organic constituents, and baghouse bags used to capture metallic dusts emitted by steel manufacturing shall contain recoverable levels of metal.
NR 666.100(4)(c)1.d.
d. The owner or operator certifies in the one-time notice that hazardous waste is burned under this paragraph and that sampling and analysis will be conducted or other information will be obtained as necessary to ensure continued compliance with these requirements. Sampling and analysis shall be conducted according to par.
(a) 2. and records to document compliance with this paragraph shall be kept for at least 3 years.
NR 666.100(4)(c)2.
2. The department may decide on a case-by-case basis that the toxic organic constituents in a material listed in ch.
NR 666 Appendix XI, ch.
NR 666 Appendix XII, or ch.
NR 666 Appendix XIII that contains a total concentration of more than 500 ppm toxic organic compounds listed in ch.
NR 661 Appendix VIII may pose a hazard to human health and the environment when burned in a metal recovery furnace exempt from this subchapter. In that situation, after adequate notice and opportunity for comment, the metal recovery furnace shall become subject to this subchapter when burning that material. In making the hazard determination, the department will consider all of the following factors:
NR 666.100(4)(c)2.b.
b. The level of destruction of toxic organic constituents provided by the furnace.
NR 666.100(4)(c)2.c.
c. Whether the acceptable ambient levels established in ch.
NR 666 Appendix IV or ch.
NR 666 Appendix V may be exceeded for any toxic organic compound that may be emitted based on dispersion modeling to predict the maximum annual average off-site ground level concentration.
NR 666.100(6)
(6) The management standards for residues under s.
NR 666.112 apply to any boiler or industrial furnace burning hazardous waste.
NR 666.100(7)
(7) Owners and operators of smelting, melting and refining furnaces (including pyrometallurgical devices such as cupolas, sintering machines, roasters and foundry furnaces) that process hazardous waste for recovery of economically significant amounts of the precious metals gold, silver, platinum, palladium, iridium, osmium, rhodium or ruthenium, or any combination of these are conditionally exempt from regulation under this subchapter, except for s.
NR 666.112. To be exempt from ss.
NR 666.101 to
666.111, an owner or operator shall do all of the following:
NR 666.100(7)(a)
(a) Provide a one-time written notice to the department indicating all of the following:
NR 666.100(7)(a)2.
2. The hazardous waste is burned for legitimate recovery of precious metal.
NR 666.100(7)(a)3.
3. The owner or operator will comply with the sampling and analysis and recordkeeping requirements of this subsection.
NR 666.100(7)(b)
(b) Sample and analyze the hazardous waste as necessary to document that the waste contains economically significant amounts of the metals and that the treatment recovers economically significant amounts of precious metal.
NR 666.100(7)(c)
(c) Maintain at the facility for at least 3 years records to document that all hazardous wastes burned are burned for recovery of economically significant amounts of precious metal.
NR 666.100(8)
(8) Starting June 23, 1997, owners or operators of lead recovery furnaces that process hazardous waste for recovery of lead and that are subject to regulation under the Secondary Lead Smelting national standards for hazardous air pollutants (NESHAP), are conditionally exempt from regulation under this subchapter, except for s.
NR 666.101. To be exempt, an owner or operator shall provide a one-time notice to the department identifying each hazardous waste burned and specifying that the owner or operator claims an exemption under this subsection. The notice also shall state that the waste burned has a total concentration of non-metal compounds listed in ch.
NR 661 Appendix VIII, of less than 500 ppm by weight, as fired and as provided in sub.
(4) (b) 1., or is listed in ch.
NR 666 Appendix XI.
NR 666.100 History
History: CR 05-032: cr.
Register July 2006 No. 607, eff. 8-1-06; corrections in (2) (b) 5., (4) (c) 1. (intro.), a., 2. (intro.), c., (8) made under s.
13.92 (4) (b) 7., Stats.,
Register March 2013 No. 687;
CR 16-007: am. (2) (a), cr. (2) (c), (d), am. (4) (a) 2., r. and recr. (7) (b)
Register July 2017 No. 739, eff. 8-1-17;
CR 19-082: am. (3) (c), (4) (c) 1. b.
Register August 2020 No. 776, eff. 9-1-20.
NR 666.101
NR 666.101 Management prior to burning. NR 666.101(1)(1)
Generators. Generators of hazardous waste that is burned in a boiler or industrial furnace are subject to ch.
NR 662 .
NR 666.101(2)
(2)
Transporters. Transporters of hazardous waste that is burned in a boiler or industrial furnace are subject to ch.
NR 663.
NR 666.101(3)(a)
(a) Owners and operators of facilities that store or treat hazardous waste that is burned in a boiler or industrial furnace are subject to the applicable provisions of chs.
NR 664,
665,
667 and
670, except as provided by sub.
(3) (b). These standards apply to storage and treatment by the burner as well as to storage and treatment facilities operated by intermediaries (processors, blenders, distributors, etc.) between the generator and the burner.
NR 666.101(3)(b)
(b) Owners and operators of facilities that burn, in an on-site boiler or industrial furnace exempt from regulation under the small quantity burner provisions of s.
NR 666.108, hazardous waste that they generate are exempt from the regulations of chs.
NR 664,
665,
667 and
670 applicable to storage units for those storage units that store mixtures of hazardous waste and the primary fuel to the boiler or industrial furnace in tanks that feed the fuel mixture directly to the burner. Storage of hazardous waste prior to mixing with the primary fuel is subject to regulation as prescribed in par.
(a).
NR 666.102
NR 666.102 License standards for burners. NR 666.102(1)(a)(a)
General. Owners and operators of boilers and industrial furnaces burning hazardous waste and not operating under an interim license shall comply with this section and ss.
NR 670.022 and
670.066, unless exempt under the small quantity burner exemption of s.
NR 666.108.
NR 666.102(1)(b)
(b) Applicability of ch. NR 664 standards. Owners and operators of boilers and industrial furnaces that burn hazardous waste are subject to the following provisions of ch.
NR 664, except as provided otherwise by this subchapter:
NR 666.102(2)(a)
(a) The owner or operator shall provide an analysis of the hazardous waste that quantifies the concentration of any constituent identified in ch.
NR 661 Appendix VIII that may reasonably be expected to be in the waste. Such constituents shall be identified and quantified if present, at levels detectable by using appropriate analytical procedures. The ch.
NR 661 Appendix VIII constituents excluded from this analysis shall be identified and the basis for their exclusion explained. This analysis shall be used to provide all information required by this subchapter and ss.
NR 670.022 and
670.066 and to enable the department to prescribe such license conditions as necessary to protect human health and the environment. Such analysis shall be included as a portion of the feasibility and plan of operation report, or, for facilities operating under the interim license standards of this subchapter, as a portion of the trial burn plan that may be submitted before the feasibility and plan of operation report under provisions of s.
NR 670.066 (7) as well as any other analysis required by the department in preparing the license. Owners and operators of boilers and industrial furnaces not operating under the interim license standards shall provide the information required by s.
NR 670.022 or
670.066 (3) in the feasibility and plan of operation report to the greatest extent possible.
NR 666.102(2)(b)
(b) Throughout normal operation, the owner or operator shall conduct sampling and analysis as necessary to ensure that the hazardous waste, other fuels, and industrial furnace feedstocks fired into the boiler or industrial furnace are within the physical and chemical composition limits specified in the license.
NR 666.102(4)(a)(a) The owner or operator may burn only hazardous wastes specified in the facility license and only under the operating conditions specified under sub.
(5), except in approved trial burns under the conditions specified in s.
NR 670.066.
NR 666.102(4)(b)
(b) Hazardous wastes not specified in the license may not be burned until operating conditions have been specified under a new license or license modification, as applicable. Operating requirements for new wastes may be based on either trial burn results or alternative data included with feasibility and plan of operation report under s.
NR 670.022.
NR 666.102(4)(d)
(d) A license for a new boiler or industrial furnace (those boilers and industrial furnaces not operating under the interim license standards) shall establish appropriate conditions for each of the applicable requirements of this section, including but not limited to allowable hazardous waste firing rates and operating conditions necessary to meet sub.
(5), in order to comply with all of the following standards:
NR 666.102(4)(d)1.
1. For the period beginning with initial introduction of hazardous waste and ending with initiation of the trial burn, and only for the minimum time required to bring the device to a point of operational readiness to conduct a trial burn, not to exceed a duration of 720 hours operating time when burning hazardous waste, the operating requirements shall be those most likely to ensure compliance with the emission standards of ss.
NR 666.104 to
666.107, based on the department's engineering judgment. If the applicant is seeking a waiver from a trial burn to demonstrate conformance with a particular emission standard, the operating requirements during this initial period of operation shall include those specified by the applicable provisions of s.
NR 666.104,
666.105,
666.106 or
666.107. The department may extend the duration of this period for up to 720 additional hours when good cause for the extension is demonstrated by the applicant.
NR 666.102(4)(d)2.
2. For the duration of the trial burn, the operating requirements shall be sufficient to demonstrate compliance with the emissions standards of ss.
NR 666.104 to
666.107 and shall be in accordance with the approved trial burn plan.
NR 666.102(4)(d)3.
3. For the period immediately following completion of the trial burn, and only for the minimum period sufficient to allow sample analysis, data computation, submission of the trial burn results by the applicant, review of the trial burn results and modification of the facility license by the department to reflect the trial burn results, the operating requirements shall be those most likely to ensure compliance with the emission standards of ss.
NR 666.104 to
666.107 based on the department's engineering judgment.
NR 666.102(4)(d)4.
4. For the remaining duration of the license, the operating requirements shall be those demonstrated in a trial burn or by alternative data specified in s.
NR 670.022, as sufficient to ensure compliance with the emissions standards of ss.
NR 666.104 to
666.107.
NR 666.102(5)(a)(a)
General. A boiler or industrial furnace burning hazardous waste shall be operated in accordance with the operating requirements specified in the license at all times where there is hazardous waste in the unit.
NR 666.102(5)(b)
(b) Requirements to ensure compliance with the organic emissions standards. NR 666.102(5)(b)1.1. `DRE standard.' Operating conditions shall be specified either on a case-by-case basis for each hazardous waste burned as those demonstrated (in a trial burn or by alternative data as specified in s.
NR 670.022) to be sufficient to comply with the destruction and removal efficiency (DRE) performance standard of s.
NR 666.104 (1) or as those special operating requirements provided by s.
NR 666.104 (1) (d) for the waiver of the DRE trial burn. When the DRE trial burn is not waived under s.
NR 666.104 (1) (d), each set of operating requirements shall specify the composition of the hazardous waste (including acceptable variations in the physical and chemical properties of the hazardous waste which will not affect compliance with the DRE performance standard) to which the operating requirements apply. For each such hazardous waste, the license shall specify acceptable operating limits including, but not limited to, the following conditions as appropriate:
NR 666.102(5)(b)1.a.
a. Feed rate of hazardous waste and other fuels measured and specified as prescribed in par.
(f).
NR 666.102(5)(b)1.b.
b. Minimum and maximum device production rate when producing normal product expressed in appropriate units, measured and specified as prescribed in par.
(f).
NR 666.102(5)(b)1.d.
d. Allowable variation in boiler and industrial furnace system design or operating procedures.
NR 666.102(5)(b)1.e.
e. Minimum combustion gas temperature measured at a location indicative of combustion chamber temperature, measured and specified as prescribed in par.
(f).
NR 666.102(5)(b)1.f.
f. An appropriate indicator of combustion gas velocity, measured and specified as prescribed in par.
(f), unless documentation is provided under s.
NR 670.066 demonstrating adequate combustion gas residence time.
NR 666.102(5)(b)2.
2. `Carbon monoxide and hydrocarbon standards.' The license shall incorporate a carbon monoxide (CO) limit and, as appropriate, a hydrocarbon (HC) limit as provided by s.
NR 666.104 (2),
(3),
(4),
(5) and
(6). The license limits shall be specified as follows:
NR 666.102(5)(b)2.b.
b. When complying with the alternative CO standard under s.
NR 666.104 (3), the license limit for CO is based on the trial burn and is established as the average over all valid runs of the highest hourly rolling average CO level of each run, and the license limit for HC is 20 ppmv (as defined in s.
NR 666.104 (3) (a)), except as provided in s.
NR 666.104 (6).
NR 666.102(5)(b)2.c.
c. When complying with the alternative HC limit for industrial furnaces under s.
NR 666.104 (6), the license limit for HC and CO is the baseline level when hazardous waste is not burned as specified by that subsection.
NR 666.102(5)(b)3.
3. `Startup and shutdown.' During startup and shutdown of the boiler or industrial furnace, hazardous waste (except waste fed solely as an ingredient under the Tier I (or adjusted Tier I) feed rate screening limits for metals and chloride or chlorine, and except low risk waste exempt from the trial burn requirements under ss.
NR 666.104 (1) (e),
666.105,
666.106 and
666.107) may not be fed into the device unless the device is operating within the conditions of operation specified in the license.
NR 666.102(5)(c)
(c) Requirements to ensure conformance with the particulate standard. NR 666.102(5)(c)1.1. Except as provided in subds.
2. and
3., the license shall specify the following operating requirements to ensure conformance with the particulate standard specified in s.
NR 666.105:
NR 666.102(5)(c)1.a.
a. Total ash feed rate to the device from hazardous waste, other fuels and industrial furnace feedstocks, measured and specified as prescribed in par.
(f).
NR 666.102(5)(c)1.b.
b. Maximum device production rate when producing normal product expressed in appropriate units, and measured and specified as prescribed in par.
(f).
NR 666.102(5)(c)1.c.
c. Appropriate controls on operation and maintenance of the hazardous waste firing system and any air pollution control system.
NR 666.102(5)(c)1.d.
d. Allowable variation in boiler and industrial furnace system design including any air pollution control system or operating procedures.
NR 666.102(5)(c)2.
2. License conditions to ensure conformance with the particulate matter standard may not be provided for facilities exempt from the particulate matter standard under s.
NR 666.105 (2).
NR 666.102(5)(c)3.
3. For cement kilns and light-weight aggregate kilns, license conditions to ensure compliance with the particulate standard may not limit the ash content of hazardous waste or other feed materials.
NR 666.102(5)(d)
(d) Requirements to ensure conformance with the metals emissions standard. NR 666.102(5)(d)1.1. For conformance with the Tier I (or adjusted Tier I) metals feed rate screening limits of s.
NR 666.106 (2) or
(5), the license shall specify the following operating requirements:
NR 666.102(5)(d)1.a.
a. Total feed rate of each metal in hazardous waste, other fuels, and industrial furnace feedstocks measured and specified under provisions of par.
(f).
NR 666.102(5)(d)1.c.
c. A sampling and metals analysis program for the hazardous waste, other fuels and industrial furnace feedstocks.
NR 666.102(5)(d)2.
2. For conformance with the Tier II metals emission rate screening limits under s.
NR 666.106 (3) and the Tier III metals controls under s.
NR 666.106 (4), the license shall specify the following operating requirements:
NR 666.102(5)(d)2.a.
a. Maximum emission rate for each metal specified as the average emission rate during the trial burn.
