Subchapter BB — Air Emission Standards for Equipment Leaks
Standards: pumps in light liquid service.
Standards: pressure relief devices in gas/vapor service.
Standards: sampling connection systems.
Standards: open-ended valves or lines.
Standards: valves in gas/vapor service or in light liquid service.
Standards: pumps and valves in heavy liquid service, pressure relief devices in light liquid or heavy liquid service, and flanges and other connectors.
Standards: delay of repair.
Standards: closed-vent systems and control devices.
Alternative standards for valves in gas/vapor service or in light liquid service: percentage of valves allowed to leak.
Alternative standards for valves in gas/vapor service or in light liquid service: skip period leak detection and repair.
Test methods and procedures.
Subchapter CC — Air Emission Standards for
Tanks and Containers
Material determination procedures.
Standards: closed-vent systems and control devices.
Inspection and monitoring requirements.
Ch. NR 661 Note
Note: Chapter NR 661 as it existed on August 31, 2020, is repealed and a new ch. NR 661 is created by CR 19-082, eff. 9-1-20. NR 661.0001
NR 661.0001 Purpose, scope and definitions. NR 661.0001(1)(1)
This chapter identifies solid wastes subject to regulation as hazardous wastes under chs. NR 662
, and subject to the notification requirements under s. NR 660.07
. In this chapter:
defines the terms “solid waste” and “hazardous waste,” identifies wastes that are excluded from regulation under chs. NR 662
, and 670
, and establishes special management requirements for hazardous waste produced by very small quantity generators and hazardous waste that is recycled.
sets forth the criteria used by the department to identify characteristics of hazardous waste and to list particular hazardous wastes.
The definition of solid waste contained in this chapter applies only to wastes that also are hazardous for the purposes of chs. NR 660
. For example, it does not apply to materials such as non-hazardous scrap, paper, textiles, or rubber, that are not otherwise hazardous wastes and that are recycled.
This chapter identifies only some of the materials that are solid wastes and hazardous wastes for the purposes of ss. 291.15
, and 291.93
and 42 USC 6927
, and 6973
(a). A material that is not defined as a solid waste in this chapter, or is not a hazardous waste identified or listed in this chapter, is still a solid waste and a hazardous waste for the purposes of those provisions if any of the following are met:
In the case of ss. 291.15
, and 291.93
, Stats., or 42 USC 6927
, the department or EPA has reason to believe that the material may be a solid waste within the meaning of s. 289.01 (33)
and section 1004 (27) of RCRA, or a hazardous waste within the meaning of s. 291.01 (7)
and section 1004 (5) of RCRA.
“Spent material” means any material that has been used and, as a result of contamination, can no longer serve the purpose for which it was produced without processing.
“By-product” means a material that is not one of the primary products of a production process and is not solely or separately produced by the production process. Examples of by-products are process residues such as slags or distillation column bottoms. “By-product” does not include a co-product that is produced for the general public's use and is ordinarily used in the form it is produced by the process.
“Reclaimed” means a material that has been processed to recover a usable product or that has been regenerated. Examples of “reclaimed material” are recovery of lead values from spent batteries, regeneration of spent solvents, and, for the purposes of s. NR 661.0004 (1) (w)
, smelting, melting, and refining furnaces solely engaged in metals reclamation if the metal recovery from the hazardous secondary material meets the requirements specified for metals recovery from hazardous waste found in ss. NR 666.100 (4) (a)
, and if the residuals meet the requirements specified in s. NR 666.112
“Used or reused” means a material that is one of the following:
Employed as an ingredient, including use as an intermediate, in an industrial process to make a product, such as distillation bottoms from one process used as feedstock in another process. However, a material will not satisfy this condition if distinct components of the material are recovered as separate end products, as when metals are recovered from metal-containing secondary material.
Employed in a particular function or application as an effective substitute for a commercial product, such as spent pickle liquor used as phosphorous precipitant and sludge conditioner in wastewater treatment.
“Scrap metal” means bits and pieces of metal parts, such as bars, turnings, rods, sheets, wire, or metal pieces that may be combined together with bolts or soldering, such as radiators, scrap automobiles, or railroad box cars, which when worn or superfluous,
can be recycled.
“Recycled” means a material that is used, reused, or reclaimed.
“Accumulated speculatively” means a material that is accumulated before being recycled.
A material is not accumulated speculatively if the person accumulating it can show all of the following:
The material is potentially recyclable and has a feasible means of being recycled.
During the calendar year commencing on January 1, the amount of material that is recycled, or transferred to a different site for recycling, equals at least 75 percent by weight or volume of the amount of that material accumulated at the beginning of the period.
Materials that are accumulated speculatively shall be placed in a storage unit with a label indicating the first date that the material began to be accumulated. If placing a label on the storage unit is not practicable, the accumulation period shall be documented through an inventory log or other appropriate method.
In calculating the percentage of turnover for materials that are accumulated speculatively, the 75 percent requirement shall be applied to each material of the same type, such as slags from a single smelting process, that is recycled in the same way. Materials accumulating in units that are exempt from regulation under s. NR 661.0004 (3)
may not be included in making the calculation.
Materials that are accumulated speculatively that are already defined as solid wastes may not be included in making the calculation.
Materials that are accumulated speculatively are no longer in this category once they are removed from accumulation for recycling.
“Excluded scrap metal” means processed scrap metal, unprocessed home scrap metal, and unprocessed prompt scrap metal.
“Processed scrap metal” means scrap metal that has been manually or physically altered to either separate it into distinct materials to enhance economic value or to improve the handling of materials. Processed scrap metal includes scrap metal that has been baled, shredded, sheared, chopped, crushed, flattened, cut, melted, or separated by metal type, and, fines, drosses and related materials that have been agglomerated.
NR 661.0001 Note
Shredded circuit boards being sent for recycling are not considered processed scrap metal. They are covered under the exclusion from the definition of solid waste for shredded circuit boards being recycled under s. NR 661.0004 (1) (n)
“Home scrap metal” means scrap metal generated by steel mills, foundries, and refineries such as turnings, cuttings, punchings, and borings.
“Prompt scrap metal” means scrap metal generated by the metal working and fabrication industries and includes such scrap metal as turnings, cuttings, punchings, and borings.
NR 661.0001 Note
Note: Prompt scrap is also known as industrial or new scrap metal.
NR 661.0001 History
History: CR 19-082
: cr. Register August 2020 No. 776
, eff. 9-1-20; correction in (1) (a), (2) (a), (b) (intro.), (3) (c), (h) 1. b. made under s. 35.17
, Stats., Register August 2020 No. 776
; correction in (3) (b) made under s. 13.92 (4) (b) 7., Stats., Register April 2021 No. 784.
“Discarded material” means any material that is one of the following:
Materials are solid wastes if they are abandoned by being any of the following:
Accumulated, stored, or treated, but not recycled, before or in lieu of being abandoned by being disposed of, burned or incinerated.
Materials are solid wastes if they are recycled, or accumulated, stored, or treated before recycling as specified in pars. (a)
Materials noted with a “*” in column 1 of Table 1 are solid wastes when they are any of the following:
Used to produce products that are applied to or placed on the land or are otherwise contained in products that are applied to or placed on the land, in which case the product itself remains a solid waste.
Commercial chemical products listed in s. NR 661.0033
are not solid wastes if they are applied to the land and that is their ordinary manner of use.
Materials noted with a “*” in column 2 of Table 1 are solid wastes when they are any of the following:
Used to produce a fuel or are otherwise contained in fuels, in which cases the fuel itself remains a solid waste.