Wis. Admin. Code Department of Natural Resources NR 440.647

Current through October 28, 2024

Section NR 440.647 - Volatile organic compound (VOC) emissions from the polymer manufacturing industry

(1) APPLICABILITY AND DESIGNATION OF AFFECTED FACILITIES.

(a) The provisions of this section apply to affected facilities involved in the manufacture of polypropylene, polyethylene, polystyrene, or poly(ethylene terephthalate) as defined in sub. (2). The affected facilities designated as follows for polypropylene and polyethylene are inclusive of all equipment used in the manufacture of these polymers, beginning with raw materials preparation and ending with product storage, and cover all emissions emanating from such equipment:

1. For process emissions from any polypropylene and polyethylene manufacturing process that uses a continuous process, the affected facilities are each of the following process sections: each raw materials preparation section, each polymerization reaction section, each material recovery section, each product finishing section and each product storage section. These process sections are affected facilities for process emissions that are emitted continuously and for process emissions that are emitted intermittently.

2. For process emissions from polystyrene manufacturing processes that use a continuous process, the affected facilities are each material recovery section. These process sections are affected facilities for only those process emissions that are emitted continuously.

3. For process emissions from poly(ethylene terephthalate) manufacturing processes that use a continuous process, the affected facilities are each polymerization reaction section. If the process uses dimethyl terephthalate, then each material recovery section is also an affected facility. If the process uses terephthalic acid, then each raw materials preparation section is also an affected facility. These process sections are affected facilities for only those process emissions that are emitted continuously.

4. For VOC emissions from equipment leaks from polypropylene, polyethylene and polystyrene (including expandable polystyrene) manufacturing processes, the affected facilities are each group of fugitive emissions equipment, as defined in sub. (2), within any process unit, as defined in sub. (2). This section does not apply to VOC emissions from equipment leaks from polyethylene terephthalate manufacturing processes.

a. Affected facilities with a design capacity to produce less than 1,000 Mg/yr (1,102 ton/yr) shall be exempt from sub. (4).

b. Addition or replacement of equipment for the purposes of improvement which is accomplished without a capital expenditure will not by itself be considered a modification under sub. (4).

(b) The applicability date identifies when an affected facility becomes subject to a standard. Usually, a standard has a single applicability date. However, some polypropylene and polyethylene affected facilities have a September 30, 1987, applicability date and others have a January 10, 1989, applicability date. The following paragraphs identify the applicability dates for all affected facilities subject to this section.

1. Polypropylene and polyethylene. Each process section in a polypropylene or polyethylene production process is a potential affected facility for both continuous and intermittent emissions. The applicability date depends on when the process section was constructed, modified or reconstructed and, in some instances, on the type of production process.

a. The applicability date for any polypropylene or polyethylene affected facility that is constructed, modified or reconstructed after January 10, 1989, regardless of the type of production process being used, is January 10, 1989.

b. Only some polypropylene or polyethylene process sections that are constructed, modified or reconstructed on or before January 10, 1989, but after September 30, 1987, are affected facilities. These process sections, and the type of emissions to be controlled, are identified by an "X" in Table 1. The applicability date for the process sections and the emissions to be controlled that are identified by an `X' in Table 1 is September 30, 1987. Since the affected facilities that have a September 30, 1987, applicability date are determined by the type of production process (for example, liquid phase, gas phase), each owner or operator shall identify the particular production process that applies to his or her particular process.

Table 1. Polypropylene and Polyethylene Affected Facilities with September 30, 1987, Applicability Date

Emissions
Polymer	Production Process	Process Section	Continuous	Intermit-
tent
1)	Polypropylene	Liquid phase	Raw Materials Preparation	X	-
Polymerization Reaction	X	-
Material Recovery	X	X
Product Finishing	X	-
Product Storage	-	-
2)	Polypropylene	Gas Phase	Raw Materials Preparation	-	-
Polymerization Reaction	-	X
Material Recovery	X	-
Product Finishing	-	-
Product Storage	-	-
3)	Low Density Polyethylene	High Pressure	Raw Materials Preparation	-	X
Polymerization Reaction	-	X
Material Recovery	-	X
Product Finishing	-	X
Product Storage	-	X
4)	Low Density Polyethylene	Low Pressure	Raw Materials Preparation	X	X
5)	High Density Polyethylene	Gas Phase	Polymerization Reaction	-	X
Material Recovery	-	-
Product Finishing	X	-
Product Storage	-	-
6)	High Density Polyethylene	Liquid Phase Slurry	Raw Materials Preparation	-	X
Polymerization Reaction	-	-
Material Recovery	X	-
Product Finishing	X	-
Product Storage	-	-
7)	High Density Polyethylene	Liquid Phase Solution	Raw Materials Preparation	X	X
Polymerization Reaction	-	X
Material Recovery	X	X
Product Finishing	-	-
Product Storage	-	-

Note: "X" denotes that process section is an affected facility for continuous or intermittent emissions or both, as shown, which has a September 30, 1987, applicability date.

"-" denotes that process section is not considered an affected facility for continuous or intermittent emissions or both, as shown, if the process section is constructed, modified, or reconstructed after September 30, 1987, and on or before January 10, 1989. These process sections are affected facilities if they are constructed, modified, or reconstructed after January 10, 1989.

2. Polystyrene. The applicability date for each polystyrene affected facility is September 30, 1987.

3. Poly(ethylene terephthalate). The applicability date for each poly(ethylene terephthalate) affected facility is September 30, 1987.

(c) Any facility under par. (a) that commences construction, modification or reconstruction after its applicability date as identified under par. (b) is subject to the requirements of this section, except as provided in par. (d) to (f).

(d) Any polypropylene or polyethylene affected facility with a September 30, 1987, applicability date that commenced construction, modification or reconstruction after September 30, 1987, and on or before January 10, 1989, with an uncontrolled emission rate, as defined in footnote a to Table 2, at or below those identified in Table 2 is not subject to the requirements of sub. (3) unless and until its uncontrolled emission rate exceeds that rate listed for it in Table 2 or it is modified or reconstructed after January 10, 1989. At such time, such facility becomes subject to sub. (3) and the procedures identified in sub. (3) (a) shall be used to determine the control of emissions from the facility.

Table 2. Maximum Uncontrolled Threshold Emission Rates^a

Production Process	Process Section	Uncontrolled Emission Rate,kg TOC/Mg product
1.	Polypropylene, liquid phase process	Raw Materials Preparation Polymerization Reaction Material Recovery Product Finishing	0.15^b 0.14^b,0.24 ^c 0.19^b 1.57^b
2.	Polypropylene, gas phase process	Polymerization Reaction Material Recovery	0.12^c 0.02^b
3.	Low Density Polyethylene, high pressure process	Raw Materials Preparation Polymerization Reaction Material Recovery Product Finishing Product Storage	0.41^d (e) (e) (e) (e)
4.	Low Density Polyethylene, low pressure process	Raw Materials Preparation Polymerization Reaction Production Finishing	0.05^f 0.03^g 0.01^b
5.	High Density Polyethylene, liquid phase slurry process	Raw Materials Preparation Material Recovery Product Finishing	0.25^c 0.11^b 0.41^b
6.	High Density Polyethylene, liquid phase solution process	Raw Materials Preparation Polymerization Reaction Material Recovery	0.24^f 0.16^c 1.68^f
7.	High Density Polyethylene, gas phase process	Raw Materials Preparation Polymerization Reaction Product Finishing	0.05^f 0.03^g 0.01^b
8.	Polystyrene, continuous process	Material Recovery	0.05^b,h
9.	Poly(ethylene terephthalate), dimethyl terephthalate process	Material Recovery Polymerization Reaction	0.12^b,h 1.80^h,i,j
10.	Poly(ethylene terephthalate), terephthalic acid process	Raw Materials Preparation Polymerization Reaction	(^l) 1.80^h,j,m 3 92^h,k,m

a "Uncontrolled emission rate" refers to the emission rate of a vent stream that vents directly to the atmosphere and to the emission rate of a vent stream to the atmosphere that would occur in the absence of any add-on control devices but after any material recovery devices that constitute part of the normal material recovery operations in a process line where potential emissions are recovered for recycle or resale.

b Emission rate applies to continuous emissions only.

c Emission rate applies to intermittent emissions only.

d Total emission rate for non-emergency intermittent emissions from raw materials preparation, polymerization reaction, material recovery, product finishing, and product storage process sections.

e See footnote d.

f Emission rate applies to both continuous and intermittent emissions.

g Emission rate applies to non-emergency intermittent emissions only.

h Applies to modified or reconstructed affected facilities only.

i Includes emissions from the cooling water tower.

j Applies to a process line producing low viscosity poly(ethylene terephthalate).

k Applies to a process line producing high viscosity poly(ethylene terephthalate).

l See footnote m.

m Applies to the sum of emissions to the atmosphere from the polymerization reaction section (including emissions from the cooling water tower) and the raw materials preparation section (i.e., the esterifiers).

(e)

1. Modified or reconstructed affected facilities at polystyrene and poly(ethylene terephthalate) plants with uncontrolled emission rates at or below those identified in Table 2 are exempt from the requirements of sub. (3) unless and until its uncontrolled emission rate exceeds that rate listed for it in Table 2. This exemption does not apply to new polystyrene or poly(ethylene terephthalate) affected facilities.

2. Emissions from modified or reconstructed affected facilities that are controlled by an existing control device and that have uncontrolled emission rates greater than the uncontrolled threshold emission rates identified in Table 2 are exempt from the requirements of sub. (3) unless and until the existing control device is modified, reconstructed or replaced.

(f) No process section of an experimental process line is considered an affected facility for continuous or intermittent process emissions.

(g) Individual vent streams that emit continuous emissions with uncontrolled annual emissions of less than 1.6 Mg/yr or with a weight percent TOC of less than 0.10 % from a new, modified or reconstructed polypropylene or polyethylene affected facility are exempt from the requirements of sub. (3) (a) 1. If at a later date, an individual stream's uncontrolled annual emissions become 1.6 Mg/yr or greater, if the stream was exempted on the basis of the uncontrolled annual emissions exemption, or VOC concentration becomes 0.10 weight percent or higher, if the stream was exempted on the basis of the VOC concentration exemption, then the stream is subject to the requirements of sub. (3).

(h) Emergency vent streams, as defined in sub. (2) from a new, modified or reconstructed polypropylene or polyethylene affected facility are exempt from the requirements of sub. (3) (a) 2.

(i) An owner or operator of a polypropylene or polyethylene affected facility that commenced construction, modification or reconstruction after September 30, 1987, and on or before January 10, 1989, and that is in a process line in which more than one type of polyolefin, that is, polypropylene, low density polyethylene, high density polyethylene or their copolymers, is produced shall select one of the polymer/production process combinations in Table 1 for purposes of determining applicable affected facilities and uncontrolled threshold emission rates.

Note: The numerical emission limits in these standards are expressed in terms of total organic compounds, measured as total organic compounds less methane and ethane.

(j)

1. Owners or operators may choose to comply with 40 CFR part 65, subpart G, as in effect on December 14, 2000, for continuous process vents that are subject to this section, that choose to comply with sub. (3) (a) 1. a. 1), 2) or 3) as allowed in sub. (3) (a) 1. and (b) 1. c. The requirements of 40 CFR part 65, subpart G, as in effect on December 14, 2000, satisfy the requirements of par. (c) and subs. (5) to (7), except for sub. (7) (g) 1. Other provisions applying to owners or operators who choose to comply with 40 CFR part 65, subpart G, as in effect on December 14, 2000, are provided in 40 CFR 65.1

2. Owners or operators who choose to comply with 40 CFR part 65, subpart G, as in effect on December 14, 2000, shall also comply with ss. NR 440.01, 440.02, 440.05, 440.06, 440.07(1) (a) and (d), 440.14 and 440.15 for those process vents. All sections or subsections from ss. NR 440.01 to 440.19 not specified in this subdivision do not apply to owners or operators of process vents complying with 40 CFR part 65, subpart G, except that provisions required to be met prior to implementing 40 CFR part 65 still apply. Owners or operators who choose to comply with 40 CFR part 65, subpart G, as in effect on December 14, 2000, shall comply with 40 CFR part 65, subpart A.

3. Each owner or operator subject to the provisions of this section that chooses to comply with 40 CFR part 65, subpart G, as in effect on December 14, 2000, at initial startup shall notify the administrator of the specific provisions of 40 CFR part 65, subpart G, as in effect on December 14, 2000, with which the owner or operator has elected to comply. Notification shall be submitted with the notification of initial startup required by 40 CFR 65.5(b).

(2) DEFINITIONS.

(a) As used in this section, all terms not defined shall have the meaning given them in s. NR 440.02 or in s. NR 440.62, and the following terms shall have the specific meanings given them.

1. "Boiler" means any enclosed combustion device that extracts useful energy in the form of steam.

2. "Capital expenditure" means, in addition to the definition in s. NR 440.02, an expenditure for a physical or operational change to an existing facility that exceeds P, the product of the facility's replacement cost, R, and an adjusted annual asset guideline repair allowance, A, as reflected by the following equation:

P = R A,

where:

a. The adjusted annual asset guideline repair allowance, A, is the product of the percent of the replacement cost, Y, and the applicable basic annual asset guideline repair allowance, B, as reflected by the following equation:

A = Y (B/100);

b. The percent Y is determined from the following equation:

Y = 1.0 - 0.57 log X,

where X is 1986 minus the year of construction; and

c. The applicable basic annual asset guideline repair allowance, B, is equal to 12.5.

3. "Car-sealed" means, for purposes of these standards, a seal that is placed on the device used to change the position of a valve, for example, from opened to closed, such that the position of the valve cannot be changed without breaking the seal and requiring the replacement of the old seal once broken with a new seal.

4. "Closed vent system" means a system that is not open to the atmosphere and that is composed of piping, connections and, if necessary, flow inducing devices that transport gas or vapor from a piece or pieces of equipment to a control device.

5. "Continuous emissions" means any gas stream containing VOC that is generated essentially continuously when the process line or any piece of equipment in the process line is operating.

6. "Continuous process" means polymerization process in which reactants are introduced in a continuous manner and products are removed either continuously or intermittently at regular intervals so that the process can be operated and polymers produced essentially continuously.

7. "Control device" means an enclosed combustion device, vapor recovery system or flare.

8. "Copolymer" means a polymer that has 2 different repeat units in its chain.

9. "Decomposition" means, for the purposes of these standards, an event in a polymerization reactor that advances to the point where the polymerization reaction becomes uncontrollable, the polymer begins to break down (decompose), and it becomes necessary to relieve the reactor instantaneously in order to avoid catastrophic equipment damage or serious adverse personnel safety consequences.

10. "Decomposition emissions" refers to those emissions released from a polymer production process as the result of a decomposition or during attempts to prevent a decomposition.

11. "Emergency vent stream" means, for the purposes of these standards, an intermittent emission that results from a decomposition, attempts to prevent decompositions, power failure, equipment failure or other unexpected cause that requires immediate venting of gases from process equipment in order to avoid safety hazards or equipment damage. This includes intermittent vents that occur from process equipment where normal operating parameters, for example, pressure or temperature, are exceeded such that the process equipment cannot be returned to normal operating conditions using the design features of the system and venting must occur to avoid equipment failure or adverse safety personnel consequences and to minimize adverse effects of the runaway reaction. This does not include intermittent vents that are designed into the process to maintain normal operating conditions of process vessels including those vents that regulate normal process vessel pressure.

12. "End finisher" means a polymerization reaction vessel operated under very low pressures, typically at pressures of 2 mm Hg (1 in H2O) or less, in order to produce high viscosity poly(ethylene terephthalate). An end finisher is preceded in a high viscosity poly(ethylene terephthalate) process line by one or more polymerization vessels operated under less severe vacuums, typically between 5 and 10 mm Hg (3 and 5 in H2O). A high viscosity poly(ethylene terephthalate) process line may have one or more end finishers.

13. "Existing control device" means, for the purposes of these standards, an air pollution control device that has been in operation on or before September 30, 1987, or that has been in operation between September 30, 1987, and January 10, 1989, on those continuous or intermittent emissions from a process section that is marked by an "-" in Table 1 of this section.

14. "Existing control device is reconstructed" means, for the purposes of these standards, the capital expenditure of at least 50% of the replacement cost of the existing control device.

15. "Existing control device is replaced" means, for the purposes of these standards, the replacement of an existing control device with another control device.

16. "Expandable polystyrene" means a polystyrene bead to which a blowing agent has been added using either an in-situ suspension process or a post-impregnation suspension process.

17. "Experimental process line" means a polymer or copolymer manufacturing process line with the sole purpose of operating to evaluate polymer manufacturing processes, technologies or products. An experimental process line does not produce a polymer or resin that is sold or that is used as a raw material for nonexperimental process lines.

18. "Flame zone" means that portion of the combustion chamber in a boiler occupied by the flame envelope.

19. "Fugitive emissions equipment" means each pump, compressor, pressure relief device, sampling connection system, open-ended valve or line, valve and flange or other connector in VOC service and any devices or systems required by s. NR 440.62.

20. "Gas phase process" means a polymerization process in which the polymerization reaction is carried out in the gas phase; that is, the monomers are gases in a fluidized bed of catalyst particles and granular polymer.

21. "High density polyethylene" or "HDPE" means a thermoplastic polymer or copolymer comprised of at least 50% ethylene by weight and having a density of greater than 0.940 g/cm3 (58.7 lb/ft3).

22. "High pressure process" means the conventional production process for the manufacture of low density polyethylene in which a reaction pressure of about 15,000 psig (103,000 kPa gauge) or greater is used.

23. "High viscosity poly(ethylene terephthalate)" means poly(ethylene terephthalate) that has an intrinsic viscosity of 0.9 or higher and is used in such applications as tire cord and seat belts.

24. "Incinerator" means an enclosed combustion device that is used for destroying VOC.

25. "In-situ suspension process" means a manufacturing process in which styrene, blowing agent and other raw materials are added together within a reactor for the production of expandable polystyrene.

26. "Intermittent emissions" means those gas streams containing VOC that are generated at intervals during process line operation and includes both planned and emergency releases.

27. "Liquid phase process" means a polymerization process in which the polymerization reaction is carried out in the liquid phase; that is, the monomers and any catalyst are dissolved or suspended in a liquid solvent.

28. "Liquid phase slurry process" means a liquid phase polymerization process in which the monomers are in solution, completely dissolved, in a liquid solvent, but the polymer is in the form of solid particles suspended in the liquid reaction mixture during the polymerization reaction; sometimes called a particle form process.

29. "Liquid phase solution process" means a liquid phase polymerization process in which both the monomers and polymer are in solution, completely dissolved in the liquid reaction mixture.

30. "Low density polyethylene" or "LDPE" means a thermoplastic polymer or copolymer comprised of at least 50% ethylene by weight and having a density of 0.940 g/cm3 (58.7 lb/ft3) or less.

31. "Low pressure process" means a production process for the manufacture of low density polyethylene in which a reaction pressure markedly below that used in a high pressure process is used. Reaction pressure of current low pressure processes typically go up to about 300 psig (2,070 kPa gauge).

32. "Low viscosity poly(ethylene terephthalate)" means a poly(ethylene terephthalate) that has an intrinsic viscosity of less than 0.75 and is used in such applications as clothing, bottle and film production.

33. "Material recovery section" means the equipment that recovers unreacted or by-product materials from any process section for return to the process line, off-site purification, treatment or sale. Equipment designed to separate unreacted or by-product material from the polymer product are to be included in this process section, provided at least some of the material is recovered for reuse in the process, off-site purification or treatment, or sale, at the time the process section becomes an affected facility. Otherwise such equipment are to be assigned to one of the other process sections, as appropriate. Equipment that treats recovered materials are to be included in this process section, but equipment that also treats raw materials are not to be included in this process section. The latter equipment are to be included in the raw materials preparation section. If equipment is used to return unreacted or by-product material directly to the same piece of process equipment from which it was emitted, then that equipment is considered part of the process section that contains the process equipment. If equipment is used to recover unreacted or by-product material from a process section and return it to another process section or a different piece of process equipment in the same process section or sends it off-site for purification, treatment or sale, then such equipment are considered part of a material recovery section. Equipment used for the on-site recovery of ethylene glycol from poly(ethylene terephthalate) plants, however, are not included in the material recovery section, but are covered under the standards applicable to the polymerization reaction section as described in sub. (3) (c) 1. b. 1) or 2. b. 1).

34. "Operating day" means, for the purposes of these standards, any calendar day during which equipment used in the manufacture of polymer was operating for at least 8 hours or one labor shift, whichever is shorter. Only operating days shall be used in determining compliance with the standards specified in sub. (3) (c) 1. b. 2), 3), 2. b. 2) and 3). Any calendar day in which equipment is used for less than 8 hours or one labor shift, whichever is less, is not an "operating day" and may not be used as part of the rolling 14-day period for determining compliance with the standards specified in sub. (3) (c) 1. b. 2), 3), 2. b. 2) and 3).

35. "Polyethylene" means a thermoplastic polymer or copolymer comprised of at least 50% ethylene by weight.

Note: See low density polyethylene and high density polyethylene.

36. "Poly(ethylene terephthalate)" or "PET" means a polymer or copolymer comprised of at least 50% bis-(2-hydroxyethyl)-terephthalate (BHET) by weight.

37. "Poly(ethylene terephthalate) (PET) manufacture using dimethyl terephthalate" means the manufacturing of poly(ethylene terephthalate) based on the esterification of dimethyl terephthalate (DMT) with ethylene glycol to form the intermediate monomer bis-(2-hydroxyethyl)-terephthalate (BHET) that is subsequently polymerized to form PET.

38. "Poly(ethylene terephthalate) (PET) manufacture using terephthalic acid" means the manufacturing of poly(ethylene terephthalate) based on the esterification reaction of terephthalic acid (TPA) with ethylene glycol to form the intermediate monomer bis-(2-hydroxyethyl)-terephthalate (BHET) that is subsequently polymerized to form PET.

39. "Polymerization reaction section" means the equipment designed to cause monomers to react to form polymers, including equipment designed primarily to cause the formation of short polymer chains (oligomers or low polymers), but not including equipment designed to prepare raw materials for polymerization, for example, esterification vessels. For the purposes of these standards, the polymerization reaction section begins with the equipment used to transfer the materials from the raw materials preparation section and ends with the last vessel in which polymerization occurs. Equipment used for the on-site recovery of ethylene glycol from poly(ethylene terephthalate) plants, however, are included in this process section, rather than in the material recovery process section.

40. "Polypropylene" or "PP" means a thermoplastic polymer or copolymer comprised of at least 50% propylene by weight.

41. "Polystyrene" or "PS" means a thermoplastic polymer or copolymer comprised of at least 80% styrene or para-methylstyrene by weight.

42. "Post-impregnation suspension process" means a manufacturing process in which polystyrene beads are first formed in a suspension process, washed, dried or otherwise finished and then added with a blowing agent to another reactor in which the beads and blowing agent are reacted to produce expandable polystyrene.

43. "Process heater" means a device that transfers heat liberated by burning fuel to fluids contained in tubular coils, including all fluids except water that is heated to produce steam.

44. "Process line" means a group of equipment assembled that can operate independently if supplied with sufficient raw materials to produce polypropylene, polyethylene, polystyrene (general purpose, crystal or expandable) or poly(ethylene terephthalate) or one of their copolymers. A process line consists of the equipment in the following process sections, to the extent that these process sections are present at a plant: raw materials preparation, polymerization reaction, product finishing, product storage and material recovery.

45. "Process section" means the equipment designed to accomplish a general but well-defined task in polymer production. Process sections include raw materials preparation, polymerization reaction, material recovery, product finishing and product storage and may be dedicated to a single process line or common to more than one process line.

46. "Process unit" means equipment assembled to perform any of the physical and chemical operations in the production of polypropylene, polyethylene, polystyrene (general purpose, crystal or expandable) or poly(ethylene terephthalate) or one of their copolymers. A process unit can operate independently if supplied with sufficient feed or raw materials and sufficient storage facilities for the product. Examples of process units are raw materials handling and monomer recovery.

47. "Product finishing section" means the equipment that treats, shapes or modifies the polymer or resin to produce the finished end product of the particular facility, including equipment that prepares the product for product finishing. For the purposes of these standards, the product finishing section begins with the equipment used to transfer the polymerized product from the polymerization reaction section and ends with the last piece of equipment that modifies the characteristics of the polymer. Product finishing equipment may accomplish product separation, extruding and pelletizing, cooling and drying, blending, additives introduction, curing or annealing. Equipment used to separate unreacted or by-product material from the product are to be included in this process section, provided the material separated from the polymer product is not recovered at the time the process section becomes an affected facility. If the material is being recovered, then the separation equipment are to be included in the material recovery section. Product finishing does not include polymerization, the physical mixing of the pellets to obtain a homogenous mixture of the polymer except as provided in this subdivision or the shaping, such as fiber spinning, molding or fabricating, or modification, such as fiber stretching and crimping, of the finished end product. If physical mixing occurs in equipment located between product finishing equipment, that is, before all the chemical and physical characteristics have been `set` by virtue of having passed through the last piece of equipment in the product finishing section, then the equipment is to be included in this process section. Equipment used to physically mix the finished product that is located after the last piece of equipment in the product finishing section is part of the product storage section.

48. "Product storage section" means the equipment that is designed to store the finished polymer or resin end product of the particular facility. For the purposes of these standards, the product storage section begins with the equipment used to transfer the finished product out of the product finishing section and ends with the containers used to store the final product. Any equipment used after the product finishing section to recover unreacted or by-product material are to be considered part of a material recovery section. Product storage does not include any intentional modification of the characteristics of any polymer or resin product, but does include equipment that provides a uniform mixture of product, provided the equipment is used after the last product finishing piece of equipment. This process section also does not include the shipment of a finished polymer or resin product to another facility for further finishing or fabrication.

49. "Raw materials preparation section" means the equipment located at a polymer manufacturing plant designed to prepare raw materials, such as monomers and solvents, for polymerization. For the purposes of these standards, this process section begins with the equipment used to transfer raw materials from storage and recovered material from material recovery process sections, and ends with the last piece of equipment that prepares the material for polymerization. The raw materials preparation section may include equipment that accomplishes purification, drying or other treatment of raw materials or of raw and recovered materials together, activation of catalysts, and esterification including the formation of some short polymer chains (oligomers), but does not include equipment that is designed primarily to accomplish the formation of oligomers, the treatment of recovered materials alone or the storage of raw materials.

50. "Recovery system" means an individual unit or series of material recovery units, such as absorbers, condensers and carbon adsorbers, used for recovering volatile organic compounds.

51. "Total organic compounds" or "TOC" means those compounds measured according to the procedures specified in sub. (6).

52. "Uncontrolled emission rate" means the emission rate of a vent stream that vents directly to the atmosphere and the emission rate of a vent stream to the atmosphere that would occur in the absence of any add-on control devices but after any material recovery devices that constitute part of the normal material recovery operations in a process line where potential emissions are recovered for recycle or resale.

53. "Vent stream" means any gas stream released to the atmosphere directly from an emission source or indirectly either through another piece of process equipment or a material recovery device that constitutes part of the normal recovery operations in a polymer process line where potential emissions are recovered for recycle or resale, and any gas stream directed to an air pollution control device. The emissions released from an air pollution control device are not considered a vent stream unless, as noted in this subdivision, the control device is part of the normal material recovery operations in a polymer process line where potential emissions are recovered for recycle or resale.

54. "Volatile organic compounds" or "VOC" means, for the purposes of these standards, any reactive organic compounds as defined in s. NR 440.02.

(3) STANDARDS: PROCESS EMISSIONS.

(a) Each owner or operator of a polypropylene, low density polyethylene or high density polyethylene process line containing a process section subject to the provisions of this section shall comply with the provisions in this subsection on and after the date on which the initial performance test required by s. NR 440.08 is completed, but not later than 60 days after achieving the maximum production rate at which the affected facility will be operated, or 180 days after initial startup, whichever comes first.

1. 'Continuous emissions.' For each vent stream that emits continuous emissions from an affected facility as defined in sub. (1) (a) 1., the owner or operator shall use the procedures identified in subd. 1. b. and c. for determining which continuous emissions are to be controlled and which level of control listed in subd. 1. a. is to be met. The owner or operator shall use the procedures identified in subd. 1. b. and c. each time a process section is constructed, modified or reconstructed at the plant site.

a. Level of control. Continuous emission streams determined to be subject to control pursuant to the procedures identified in subd. 1. b. and c., as applicable, shall meet one of the control levels identified in subd. 1. a. 1) to 4). The procedures in subd. 1. b. and c. identify which level of control may be met. The level of control identified in subd. 1. a. 4) is limited to certain continuous emission streams, which are identified through the procedures in subd. 1. b. and c.

1) Reduce emissions of total organic compounds (minus methane and ethane) (TOC) by 98 weight percent, or to a concentration of 20 parts per million by volume (ppmv) on a dry basis, whichever is less stringent. The TOC is expressed as the sum of the actual compounds, not carbon equivalents. If an owner or operator elects to comply with the 20 ppmv standard, the concentration shall include a correction to 3% oxygen only when supplemental combustion air is used to combust the vent stream.

2) Combust the emissions in a boiler or process heater with a design heat input capacity of 150 million Btu/hr or greater by introducing the vent stream into the flame zone of the boiler or process heater. If a boiler or process heater of lesser design heat capacity may be used, it shall demonstrate compliance with subd. 1. a. 1).

3) Combust the emissions in a flare that meets the conditions specified in s. NR 440.18. If the flare is used to control both continuous and intermittent emissions, the flare shall meet the conditions specified in s. NR 440.18 at all times, that is, when controlling continuous emissions alone or when controlling both continuous and intermittent emissions.

4) Vent the emissions to a control device located on the plant site.

b. Uncontrolled continuous emissions. For each vent stream that emits continuous emissions from an affected facility as defined in sub. (1) (a)1. and that is not controlled in an existing control device, the owner or operator shall use the procedures identified in Table 3 to identify those continuous emissions from each constructed, modified or reconstructed affected facility that are to be controlled. The owner shall include in the procedure all uncontrolled continuous vent streams from previously constructed, modified, or reconstructed affected facilities at the plant site each time a process section is constructed, modified or reconstructed at the plant site. In applying the procedures shown in Table 3, the stream characteristics may be either measured or calculated as specified in sub. (6) (d). For modified or reconstructed affected facilities, these stream characteristics are to be determined after a modification or reconstruction determination has been made by the department, but before any actual changes have been undertaken, and then again after the actual changes have been made. Figure 1 provides a summary overview of the control determination procedure described in

Table 3

Procedure for Determining Control and Applicable Standard for Continuous Emission Streams From New, Modified, or Reconstructed Polypropylene and Polyethylene Affected Facilities

Procedure^a	Applicable TOC Weight Percent Range	Control/No Control Criteria	Applicable Standard
1. Sum of all uncontrolled	0.10 < 5.5	1. If total combined uncontrolled	1. sub. (3) (a) 1. a. 1), 2) or 3)
streams with TOC weight	emissions are equal to or
percent within the applicable	greater than the calculated
weight percent range from all	threshold emissions (CTE)^b,
affected facilities at a plant	control
site.
2. Calculate total uncontrolled	2. If total combined uncontrolled	2. sub. (3) (a) 1. a. 1) to 4)
annual emissions for each	emission are less than the
weight percent range. For	CTE^b, control only individual
modified or affected facilities,	streams with volume flow rates
use the total uncontrolled	of 8 scfm or less.
emissions after modification
or reconstruction.
3. Calculate composite TOC	5.5 <20	1. If total combined uncontrolled	1. sub. (3) (a) 1. a. 1), 2) or 3)
concentration (weight	emissions are equal to or
percent) for streams in the	greater than CTE^b, control.
0.10 to less than 5.5 weight
percent range and for streams
in the 5.5 to less than 20 weight percent range. For modified or reconstructed affected facilities, calculate the composite VOC	2. If total combined uncontrolled emissions are less than the CTE^b, control only individual streams with volume flow rates	2. sub (3) (a) 1. a. 1) to 4)
concentration before and after	of 8 scfm or less.
modification and
reconstruction.
4. Select the higher of the two	20 to 100	1. If total combined uncontrolled	1. sub. (3) (a) 1. a. 1), 2) or 3)
TOC concentrations for each	emissions are equal to or
weight percent range for vent	greater than 18.2 Mg/yr,
streams from a modified or	control.
reconstructed affected facility
5. Calculate the threshold	2. If total combined uncontrolled	2. sub. (3) (a) 1. a.1) to 4)
emissions for the 0.10 to less	emissions are less than 18.2
than 5.5 weight percent range	Mg/yr, control.
and for the 5.5 to less than 20
weight percent range using
the respective composite
TOC concentration selected
above.

^a Individual streams excluded under sub. (1) (g) from the requirements of sub. (3) are to be excluded from all calculations in this table. This paragraph exempts all individual emission streams with individual uncontrolled annual emission rates of less than 1.6 Mg/yr and all individual emission streams with individual TOC concentrations of less than 0.10 % TOC by weight.

^bFor the 0.10 to less than 5.5 weight percent range, the following equations are used:

If the percent composite	Use this equation to
TOC concentration is . . .	calculate threshold emissions . . .
0.10 < 0.12	(a X 7.5 X 10⁶) + 226
0.12 < 0.2	(b X 58.3) + 116.8
0.2 < 0.3	(c X 3020) + 71.8
0.3 < 0.4	(d X 547) + 54.5
0.4 < 0.6	48.3 + 31 (0.6 - weight percent TOC)
0.6 < 5.5	48.3

See PDF for diagram

Figure 1.

Decision Making Process for Uncontrolled Continuous Emissions from Polypropylene and Polyethylene Affected Facilities

c. Controlled continuous emissions. For each vent stream that emits continuous emissions from an affected facility as defined in sub. (1) (a) 1. and that is controlled in an existing control device, each owner or operator shall determine whether the emissions entering the control device are greater than or equal to the calculated threshold emissions (CTE) level, which is to be calculated using the TOC concentration of the inlet vent stream and the equations in footnote b of Table 3. If the inlet stream's TOC concentration is equal to or greater than 20 weight percent, the calculated threshold emissions level is 18.2 Mg/yr (20.1 ton/yr). If multiple emission streams are vented to the control device, the individual streams are not to be separated into individual weight percent ranges for calculation purposes as would be done for uncontrolled emission streams. Emissions vented to an existing control device are required to be controlled as described in subd. 1. c. 1) and 2). Figure 2 illustrates the control determination procedure for controlled continuous emissions.

See PDF for diagram

NOTE: There are no individual stream exemptions from emissions already controlled by existing control devices.

Figure 2.

Decision Making Process for Continuous Emissions

Already Controlled at Polypropylene and Polyethylene Affected Facilities.

1) If the annual emissions of the stream entering the control device are equal to or greater than the CTE levels, then compliance with one of the requirements identified in subd. 1. a. 1), 2) or 3) is required when the control device is reconstructed or replaced or has its operating conditions modified as a result of state or local regulations, including changes in the operating permit, including those instances where the control device is reconstructed, replaced or modified in its operation at the same time the existing process section is modified or reconstructed and becomes an affected facility. If the existing control device already complies with one of the requirements identified in subd. 1. a. 1), 2) or 3) no further control is required.

2) If the annual emissions of the stream entering the control device are less than the CTE level, then the requirements of subd. 1. a. 1), 2) or 3) are not applicable at that time. However, if the control device is replaced, reconstructed or modified at a later date, each owner or operator shall reevaluate the applicability of these standards. This is done by combining with the vent stream entering the control device any uncontrolled vent streams in the same weight percent range as the controlled vent stream and determining whether the annual emissions of the stream entering the control device plus the applicable uncontrolled vent streams are greater than or equal to the CTE level, which is based on the weighted TOC concentration of the controlled vent stream and the uncontrolled vent streams. If the annual emissions entering the control device, including the applicable uncontrolled vent streams, are greater than or equal to the CTE level, then compliance with one of the requirements identified in subd. 1. a. 1), 2) or 3) is required at that time for both the controlled and uncontrolled vent streams. If the annual emissions are less than the CTE level, compliance with these standards is again not required at such time. However, if the control device is again replaced, reconstructed or modified, each owner or operator shall repeat this determination procedure.

2. 'Intermittent emissions.' The owner or operator shall control each vent stream that emits intermittent emissions from an affected facility as defined in sub. (1) (a) 1. by meeting one of the control requirements specified in subd. 2. a. and b. If a vent stream that emits intermittent emissions is controlled in an existing flare, incinerator, boiler or process heater, the requirements of this paragraph are waived until such time the control device is reconstructed or replaced or is modified in its operating conditions as a result of state or local regulation, including changes in the operating permit. This paragraph does not apply to emergency vent streams exempted by sub. (1) (h) and as defined in sub. (2).

a. Combust the emissions in a flare that is:

1) Designed for and operated with no visible emissions, except for periods not to exceed a total of 5 minutes during any 2 consecutive hours,

2) Operated with a flame present at all times, and

3) Designed to maintain a stable flame.

b. Combust the emissions in an incinerator, boiler or process heater. The emissions shall be introduced into the flame zone of a boiler or process heater.

(b) Each owner or operator of a polystyrene process line containing process sections subject to the provisions of this section shall comply with the provisions in this subsection on and after the date on which the initial performance test required by s. NR 440.08 is completed, but not later than 60 days after achieving the maximum production rate at which the affected facility will be operated, or 180 days after initial startup, whichever comes first. Each owner or operator of a polystyrene process line using a continuous process shall:

1. Limit the continuous TOC emissions from the material recovery section by complying with one of the following:

a. Not allow continuous TOC emissions to be greater than 0.0036 kg TOC/Mg (0.0072 lb TOC/ton) product.

b. Not allow the outlet gas stream temperature from each final condenser in the material recovery section to exceed -25°C (-13°F). For purposes of this standard, temperature excursions above this limit may not be considered a violation when the excursions occur during periods of startup, shutdown or malfunction.

c. Comply with par. (a) 1. a. 1), 2) or 3)

2. If continuous TOC emissions from the material recovery section are routed through an existing emergency vapor recovery system, then compliance with these standards is required when the emergency vapor recovery system undergoes modification, reconstruction or replacement. In such instances, compliance with these standards shall be achieved no later than 180 days after completion of the modification, reconstruction or replacement.

(c) Each owner or operator of a poly(ethylene terephthalate) process line containing process sections subject to the provisions of this section shall comply with the provisions in this subsection on and after the date on which the initial performance test required by s. NR 440.08 is completed, but not later than 60 days after achieving the maximum production rate at which the affected facility will be operated, or 180 days after initial startup, whichever comes first.

1. Each owner or operator of a PET process line using a dimethyl terephthalate process shall:

a. Limit the continuous TOC emissions from the material recovery section, that is, methanol recovery, by complying with one of the following:

1) Not allow the continuous TOC emissions to be greater than 0.018 kg TOC/Mg (0.040 lb TOC/ton) product.

2) Not allow the outlet gas stream temperature from each final condenser in the material recovery section, that is, methanol recovery, to exceed + 3°C (+ 37°F). For purposes of this standard, temperature excursions above this limit will not be considered a violation when the excursions occur during periods of startup, shutdown or malfunction.

b. Limit the continuous TOC emissions and, if steam-jet ejectors are used to provide vacuum to the polymerization reactors, the ethylene glycol concentration from the polymerization reaction section by complying with the following appropriate standard. The ethylene glycol concentration limits specified in subd. 1. b. 2) and 3) shall be determined by the procedures specified in sub. (6) (j).

1) Not allow continuous TOC emissions from the polymerization reaction section, including emissions from any equipment used to further recover the ethylene glycol, but excluding those emissions from the cooling tower, to be greater than 0.020 kg TOC/Mg (0.044 lb TOC/ton) product.

2) If steam-jet ejectors are used as vacuum producers and a low viscosity product is being produced using single or multiple end finishers or a high viscosity product is being produced using a single end finisher, maintain the concentration of ethylene glycol in the liquid effluent exiting the vacuum system servicing the polymerization reaction section at or below 0.35% by weight, averaged on a daily basis over a rolling 14-day period of operating days.

3) If steam-jet ejectors are used as vacuum producers and a high viscosity product is being produced using multiple end finishers, maintain an ethylene glycol concentration in the cooling tower at or below 6.0% by weight, averaged on a daily basis over a rolling 14-day period of operating days.

2. Each owner or operator of a PET process line using a terephthalic acid process shall:

a. Not allow the continuous TOC emissions from the esterification vessels in the raw materials preparation section to be greater than 0.040 kg TOC/Mg (0.088 lb TOC/ton) product.

b. Limit the continuous TOC emissions and, if steam-jet ejectors are used to provide vacuum to the polymerization reactors, the ethylene glycol concentration from the polymerization reaction section by complying with the following appropriate standard. The ethylene glycol concentration limits specified in subd. 2. b. 2) and 3) shall be determined by the procedures specified in sub. (6) (j).

(d) Closed vent systems and control devices used to comply with this section shall be operated at all times when emissions may be vented to them.

(e) Vent systems that contain valves that could divert a vent stream from a control device shall have car-sealed opened all valves in the vent system from the emission source to the control device and car-sealed closed all valves in vent system that would lead the vent stream to the atmosphere, either directly or indirectly, bypassing the control device.

(4) STANDARDS: EQUIPMENT LEAKS OF VOC.

(a) Each owner or operator of an affected facility subject to the provisions of this section shall comply with the requirements specified in s. NR 440.62(3) as soon as practicable, but no later than 180 days after initial startup, except that indications of liquids dripping from bleed ports in existing pumps in light liquid service are not considered to be a leak as defined in s. NR 440.62(3) (b) 2. b. For purposes of this standard, a "bleed port" is a technologically-required feature of the pump whereby polymer fluid used to provide lubrication, cooling, or both, of the pump shaft exits the pump, thereby resulting in a visible leak of fluid. This exemption expires when the existing pump is replaced or reconstructed.

(b) An owner or operator may elect to comply with the requirements specified in s. NR 440.62(4) (a) and (b).

(c) An owner or operator may apply to the administrator for a determination of equivalency for any means of emission limitation that achieves a reduction in emissions of VOC at least equivalent to the reduction in emissions of VOC achieved by the controls required in this section. In doing so, the owner or operator shall comply with requirements specified in 40 CFR 60.484, as in effect on July 1, 1994.

(d) Each owner or operator subject to the provisions of this section shall comply with the provisions specified in s. NR 440.62(6) except an owner or operator may use the following provision in addition to s. NR 440.62(6) (e). Equipment is in light liquid service if the percent evaporated is greater than 10% at 150°C (302°F) as determined by ASTM D86-96, incorporated by reference in s. NR 440.17(2) (a) 7.

(e) Each owner or operator subject to the provisions of this section shall comply with s. NR 440.62(7) and (8).

(5) MONITORING REQUIREMENTS.

(a) Whenever a particular item of monitoring equipment specified in this subsection is to be installed, the owner or operator shall install, calibrate, maintain and operate according to manufacturer's specifications that item as follows:

1. A temperature monitoring device to measure and record continuously the operating temperature to within 1% (relative to degrees Celsius) or "0.5°C ("0.9°F), whichever is greater.

2. A flame monitoring device, such as a thermocouple, an ultra-violet sensor, an infrared beam sensor or similar device to indicate and record continuously whether a flare or pilot light flame is present, as specified.

3. A flow monitoring indicator to indicate and record whether or not flow exists at least once every 15 minutes.

4. An organic monitoring device, based on a detection principle such as infrared, photoionization or thermal conductivity, to indicate and record continuously the concentration level of organic compounds.

5. A specific gravity monitoring device to measure and record continuously to within 0.02 specific gravity unit.

(b) The owner or operator shall install, as applicable, the monitoring equipment for the control means used to comply with sub. (3) except sub. (3) (a) 1. a. 4) as follows:

1. If the control equipment is an incinerator:

a. For a noncatalytic incinerator, a temperature monitoring device shall be installed in the firebox.

b. For a catalytic incinerator, temperature monitoring devices shall be installed in the gas stream immediately before and after the catalytic bed.

2. If a flare is used:

a. A flame monitoring device shall be installed to indicate the presence of a flare flame or a flame for each pilot light, if the flare is used to comply with sub. (3) (a) 1. including those flares controlling both continuous and intermittent emissions.

b. A thermocouple or equivalent monitoring device to indicate the presence of a flame at each pilot light, if used to comply with sub. (3) (a) 2.

3. If a boiler or process heater is used:

a. If the boiler or process heater has a heat input design capacity of less than 150 million Btu/hr, a temperature monitoring device shall be installed between the radiant section and the convection zone for watertube boilers and between the furnace, combustion zone, and the firetubes for firetube boilers.

b. If the boiler or process heater has a heat input design capacity of 150 million Btu/hr or greater, records to indicate the periods of operation of the boiler or process heater shall be maintained. The records shall be readily available for inspection.

4. If an absorber is the final unit in a system:

a. A temperature monitoring device and a specific gravity monitoring device for the scrubber liquid shall be installed; or

b. An organic monitoring device shall be installed at the outlet of the absorber.

5. If a condenser is the final unit in a system:

a. A temperature monitoring device shall be installed at the condenser exit (product side); or

b. An organic monitoring device shall be installed at the outlet of the condenser.

6. If a carbon adsorber is the final unit in a system, an organic monitoring device shall be installed at the outlet of the carbon bed.

(c) Owners or operators of control devices used to comply with the provisions of this section, except sub. (3) (a) 1. a. 4) shall monitor these control devices to ensure that they are operated and maintained in conformance with their designs.

(d) Owners or operators using a vent system that contains valves that could divert a vent stream from a control device used to comply with the provisions of this section shall do one or a combination of the following:

1. Install a flow indicator immediately downstream of each valve that if opened would allow a vent stream to bypass the control device and be emitted, either directly or indirectly, to the atmosphere. The flow indicator shall be capable of recording flow at least once every 15 minutes.

2. Monitor the valves once a month, checking the position of the valves and the condition of the car seal and identify all times when the car seals have been broken and the valve position has been changed, that is, from opened to closed for valves in the vent piping to the control device and from closed to open for valves that allow the stream to be vented directly or indirectly to the atmosphere.

(e) An owner or operator complying with the standards specified under sub. (3) except sub. (3) (a) 1. a. 4) with control devices other than an incinerator, boiler, process heater, flare, absorber, condenser or carbon adsorber or by any other means shall provide to the department information describing the operation of the control device and the process parameters which would indicate proper operation and maintenance of the device. The department may request further information and will specify appropriate monitoring procedures or requirements.

(6) 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 specified in this subsection, except as provided under s. NR 440.08(2). Owners or operators complying with sub. (3) (a) 1. a. 4) need not perform a performance test on the control device, provided the control device is not used to comply with any other requirement of sub. (3) (a).

1. Whenever changes are made in production capacity, feedstock type or catalyst type or whenever there is replacement, removal or addition of a control device, each owner or operator shall conduct a performance test according to the procedures in this subsection as appropriate, in order to determine compliance with sub. (3).

2. Where a boiler or process heater with a design heat input capacity of 150 million Btu/hr or greater is used, the requirement for an initial performance test is waived, in accordance with s. NR 440.08(2). However, the department reserves the option to require testing at such other times as may be required, as provided for in ch. NR 439.

3. The owner or operator shall determine the average organic concentration for each performance test run using the equipment described in sub. (5) (a) 4. The average organic concentration shall be determined from measurements taken at least every 15 minutes during each performance test run. The average of the 3 runs shall be the base value for the monitoring program.

4. When an absorber is the final unit in the system, the owner or operator shall determine the average specific gravity for each performance test run using specific gravity monitoring equipment described in sub. (5) (a) 5. An average specific gravity shall be determined from measurements taken at least every 15 minutes during each performance test run. The average of the 3 runs shall be the base value for the monitoring program.

5. When a condenser is the final unit in the system, the owner or operator shall determine the average outlet temperature for each performance test run using the temperature monitoring equipment described in sub. (5) (a) 1. An average temperature shall be determined from measurements taken at least every 15 minutes during each performance test run while the vent stream is normally routed and constituted. The average of the 3 runs shall be the base value for the monitoring program.

(b) Except as provided for in par. (c), the owner or operator shall determine compliance with the emission concentration standard in sub. (3) (a) 1. a. 1) or (b) 1. c. if applicable.

1. The TOC concentration is the sum of the individual components and shall be computed for each run using the following equation:

See PDF for diagram

where:

CTOC is the concentration of TOC (minus methane and ethane), dry basis, ppmv

Cj is the concentration of sample component j, ppm

n is the number of components in the sample

a. Method 18 of 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17 shall be used to determine the concentration of each individual organic component (Cj) in the gas stream. Method 1 or 1A of 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17, as appropriate, shall be used to determine the sampling site at the outlet of the control device. Method 4 of 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17 shall be used to determine the moisture content, if necessary.

b. The sampling time for each run shall be 1 hour in which either an integrated sample or 4 grab samples shall be taken. If grab sampling is used, then the samples shall be taken at 15 minute intervals.

2. If supplemental combustion air is used, the TOC concentration shall be corrected to 3% oxygen and shall be computed using the following equation:

See PDF for diagram

where:

CCORR is the concentration of TOC corrected to 3% oxygen, dry basis, ppm by volume

CMEAS is the concentration of TOC (minus methane and ethane), dry basis, ppm by volume, as calculated in subd. 1.

%O2d is the concentration of O2, dry basis, percent by volume a. The emission rate correction factor, integrated sampling and analysis procedure of Method 3 of 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17 shall be used to determine the oxygen concentration (%O2d). The sampling site shall be the same as that of the TOC sample and the samples shall be taken during the same time that the TOC samples are taken.

(c) If par. (b) is not applicable, then the owner or operator shall determine compliance with the percent emission reduction standard in sub. (3) (a) 1. a. 1) or (b) 1. c. as follows:

1. The emission reduction of TOC (minus methane and ethane) shall be determined using the following equation:

See PDF for diagram

where:

P is the percent emission reduction, by weight

Einlet is the mass rate of TOC entering the control device, kg TOC/hr (lb TOC/hr)

Eoutlet is the mass rate of TOC, discharged to the atmosphere, kg TOC/hr (lb TOC/hr)

2. The mass rates of TOC (Ei, Eo) shall be computed using the following equations:

See PDF for diagram

where:

Cij and Coj are the concentration of sample component "j" of the gas stream at the inlet and outlet of the control device, respectively, dry basis, ppmv

Mij and Moj are the molecular weight of sample component"j" of the gas stream at the inlet and outlet of the control device respectively, g/g-mole (lb/lb-mole)

Qi and Qo are the flow rate of the gas stream at the inlet and outlet of the control device, respectively, dscm/hr (dscf/hr)

Kl = 4.157 10-8 [(kg) / (g-mole)]/[(g) (ppm) (dscm)] {5.711 10-15 [(lb)/(lb-mole)] / [(lb) (ppm) (dscf)]}

a. Method 18 shall be used to determine the concentration of each individual organic component (Cij,, Coj) in the gas stream. Method 1 or 1A, as appropriate, shall be used to determine the inlet and outlet sampling sites. The inlet site shall be before the inlet of the control device and after all product recovery units.

b. Method 2, 2A, 2C or 2D of 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17, as appropriate, shall be used to determine the volumetric flow rates (Qi,, Qo). If necessary, Method 4 shall be used to determine the moisture content. Both determinations shall be compatible with the Method 18 determinations.

c. Inlet and outlet samples shall be taken simultaneously. The sampling time for each run shall be 1 hour in which either an integrated sample or 4 grab samples shall be taken. If grab sampling is used, then the samples shall be taken at 15 minute intervals.

(d) An owner or operator shall determine compliance with the individual stream exemptions in sub. (1) (g) and the procedures specified in Table 3 for compliance with sub. (3) (a) 1. as identified in subd. 1. and 2. An owner or operator using the procedures specified in sub. (3) (a) 1. for determining which continuous process emissions are to be controlled may use calculations demonstrated to be sufficiently accurate as to preclude the necessity of actual testing for purposes of calculating the uncontrolled annual emissions and weight percent of TOC. Owners or operators seeking to exempt streams under sub. (1) (g) shall use the appropriate test procedures specified in this subsection.

1. The uncontrolled annual emissions of the individual vent stream shall be determined using the following equation:

See PDF for diagram

where:

Eunc is the uncontrolled annual emissions, Mg/yr (ton/yr)

Cj is the concentration of sample component j of the gas stream, dry basis, ppmv

Mj is the molecular weight of sample component j of the gas stream, g/g-mole (lb/lb-mole)

Q is the flow rate of the gas stream, dscm/hr (dscf/hr)

K2 is 4.157 x 10-11 [(Mg) (g-mole)]/[(g) (ppm) (dscm)] for metric units and 1.298 x 10-12 [(ton) (lb-mole)]/[(lb) (ppm) (dscf)] for English units 8,600 is the operating hours per year

a. Method 18 shall be used to determine the concentration of each individual organic component (Cj) in the gas stream. Method 1 or 1A, as appropriate, shall be used to determine the sampling site. If the gas stream is controlled in an existing control device, the sampling site shall be before the inlet of the control device and after all product recovery units.

b. Method 2, 2A, 2C or 2D, as appropriate, shall be used to determine the volumetric flow rate (Q). If necessary, Method 4 shall be used to determine the moisture content. Both determinations shall be compatible with the Method 18 determinations.

c. The sampling time for each run shall be 1 hour in which either an integrated sample or 4 grab samples shall be taken. If grab sampling is used, then the samples shall be taken at 15 minute intervals.

2. The weight percent VOC of the uncontrolled individual vent stream shall be determined using the following equation:

See PDF for diagram

where:

Cj is the concentration of sample TOC component "j" of the gas stream, dry basis, ppmv

Mj is the molecular weight of sample TOC component "j" of the gas stream, g/g-mole (lb/lb-mole)

MWgas is the average molecular weight of the entire gas stream, g/g-mole (lb/lb-mole)

b. The average molecular weight of the gas stream shall be determined using methods approved by the department. If the carrier component of the gas stream is nitrogen, then an average molecular weight of 28 g/g-mole (lb/lb- mole) may be used in lieu of testing. If the carrier component of the gas stream is air, then an average molecular weight of 29 g/g-mole (lb/lb-mole) may be used in lieu of testing.

(e) The owner or operator shall determine compliance of flares with the visible emission and flare provisions in sub. (3) as follows:

1. Method 22 of 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17 shall be used to determine visible emission. The observation period for each run shall be 2 hours.

2. The monitoring device of sub. (5) (b) 2. shall be used to determine whether a flame is present.

(f) The owner or operator shall determine compliance with the net heating value provisions in s. NR 440.18 as referenced by sub. (3) (a) 1. a. 3). The net heating value of the process vent stream being combusted in a flare shall be computed as follows:

See PDF for diagram

where:

HT is the vent stream net heating value, MJ/scm (Btu/scf), where the net enthalpy per mole of offgas is based on combustion at 25°C and 760 mm Hg (77°F and 30 in Hg), but the standard temperature for determining the volume corresponding to one mole is 20°C (68°F)

K3 is 1.74 x 10-7 (l/ppm)(g-mole/scm)(MJ/kcal) for metric units where standard temperature for (g-mole/scm) is 20°C and 4.67 x 10-6 (1/ppm)(lb-mole/scf)(Btu/kcal) for English units where standard temperature for (lb-mole/scf) is 68°F

Cj is the concentration on a wet basis of compound j in ppm

Hj is the net heat of combustion of compound j, kcal/g-mole (kcal/lb-mole), based on combustion at 25°C and 760 mm Hg (77°F and 30 in Hg)

1. Method 18 shall be used to determine the concentration of each individual organic component (Cj) in the gas stream. Method 1 or 1A, as appropriate, shall be used to determine the sampling site to the inlet of the flare. Using this same sample, ASTM D1946-90 (reapproved 1994), incorporated by reference in s. NR 440.17(2) (a) 24., shall be used to determine the hydrogen and carbon monoxide content.

2. The sampling time for each run shall be 1 hour in which either an integrated sample or 4 grab samples shall be taken. If grab sampling is used, then the samples shall be taken at 15 minute intervals.

3. Published or calculated values shall be used for the net heats of combustion of the sample components. If values are not published or cannot be calculated, ASTM D2382-88 or D4809-95, incorporated by reference in s. NR 440.17(2) (a) 30. and 61., may be used to determine the net heat of combustion of component "j".

(g) The owner or operator shall determine compliance with the exit velocity provisions in s. NR 440.18 as referenced by sub. (3) (a) 1. a. 3) as follows:

1. If applicable, the net heating value (HT) of the process vent shall be determined according to the procedures in par. (f) to determine the applicable velocity requirements.

2. If applicable, the maximum permitted velocity (Vmax) for steam-assisted and nonassisted flares shall be computed using the following equation:

See PDF for diagram

where:

Vmax is the maximum permitted velocity, m/sec (ft/sec)

K4 is 28.8 for metric units and 1212 for English units

K5 is 31.7 for metric units and 850.8 for English units

HT is the net heating value as determined in par. (f), MJ/scm (Btu/scf)

3. The maximum permitted velocity, Vmax, for air-assisted flares shall be determined by the following equation:

See PDF for diagram

where:

Vmax is the maximum permitted velocity, m/sec (ft/sec)

K6 is 8.706 m/sec for metric units and 28.56 ft/sec for English units

K7 is 0.7084 [(m/sec)/(MJ/scm)] for metric units and 0.00245 [(ft/sec)/(Btu/scf)] for English units

HT is the net heating value as determined in par. (f), MJ/scm (Btu/scf)

4. The actual exit velocity of a flare shall be determined by dividing the volumetric flow rate (in units of standard temperature and pressure), as determined by Method 2, 2A, 2C or 2D as appropriate, by the unobstructed (free) cross sectional area of the flare tip.

(h) The owner or operator shall determine compliance with the mass emission per mass product standards in sub. (1) (d) and (e) and in sub. (3) (b) 1. a., (c) 1. a. 1), b. 1), 2. a. and b. 1).

1. The emission rate of TOC shall be computed using the following equation:

See PDF for diagram

where:

ERTOC is the emission rate of total organic compounds, minus methane and ethane, kg TOC/Mg product (lb TOC/ton)

ETOC is the emission rate of total organic compounds, minus methane and ethane, in the sample, kg/hr (lb/hr)

Pp is the rate of polymer production, kg/hr (lb/hr)

K5 is 1,000 kg/Mg for metric units and 2,000 lb/ton for English units

2. The mass rate of TOC, ETOC, shall be determined according to the procedures, as appropriate, in par. (c) 2. The sampling site for determining compliance with sub. (1) (d) and (e) shall be before any add-on control devices and after all product recovery devices. Otherwise, the sampling site shall be at the outlet of the control device.

3. The rate of polymer production, Pp, shall be determined by dividing the weight of polymer pulled (in kg (lb)) from the process line during the performance test by the number of hours taken to perform the performance test. The weight of polymer pulled shall be determined by direct measurement or, subject to prior approval by the department, computed from materials balance by good engineering practice.

(i) The owner or operator shall determine continuous compliance with the temperature requirements in sub. (3) (b) 1. b. and 1. a. 2) by using the temperature monitoring equipment described in sub. (5) (a) 1. An average temperature shall be determined from measurements taken at least every 15 minutes every 3 hours while the vent stream is normally routed and constituted. Each 3-hour period constitutes a performance test.

(j) For purposes of determining compliance with sub. (3) (c) 1. b. 2), 3), 2. b. 2) or 3), the ethylene glycol concentration in either the cooling tower or the liquid effluent from steam-jet ejectors used to produce a vacuum in the polymerization reactors, whichever is applicable, shall be determined:

1. Using procedures that conform to the methods described in ASTM D2908-91, Standard Practice for Measuring Volatile Organic Matter in Water by Aqueous-Injection Gas Chromatography, incorporated by reference in s. NR 440.17(2) (a) 37., except as provided in subd. 2.:

a. At least one sample per operating day shall be collected using the grab sampling procedures of ASTM D3370-95a, Standard Practices for Sampling Water, incorporated by reference in s. NR 440.17(2) (a) 47. An average ethylene glycol concentration by weight shall be calculated on a daily basis over a rolling 14-day period of operating days, except as provided in subd. 1. b. and c. Each daily average ethylene glycol concentration so calculated constitutes a performance test. Exceedance of the standard during the reduced testing program specified in subd. 1. b. and c. is a violation of these standards.

b. For those determining compliance with sub. (3) (c) 1. b. 2) or 2. b. 2), the owner or operator may elect to reduce the sampling program to any 14 consecutive day period once every 2 calendar months, if at least 17 consecutive 14-day rolling average concentrations immediately preceding the reduced sampling program are each less than 0.10 weight percent ethylene glycol. If the average concentration obtained over the 14 day sampling during the reduced testing period exceeds the upper 95% confidence interval calculated from the most recent test results in which no one 14-day average exceeded 0.10 weight percent ethylene glycol, then the owner or operator shall reinstitute a daily sampling program. A reduced sampling program can be reinstituted if the requirements specified in this paragraph are met.

c. For those determining compliance with sub. (3) (c) 1. b. 3) or 2. b. 3) the owner or operator may elect to reduce the sampling program to any 14 consecutive day period once every 2 calendar months, if at least 17 consecutive 14-day rolling average concentrations immediately preceding the reduced sampling program are each less than 1.8 weight percent ethylene glycol. If the average concentration obtained over the 14 day sampling during the reduced test period exceeds the upper 95% confidence interval calculated from the most recent test results in which no one 14-day average exceeded 1.8 weight percent ethylene glycol, then the owner or operator shall reinstitute a daily sampling program. A reduced program can be reinstituted if the requirements specified in this paragraph are met.

d. The upper 95% confidence interval shall be calculated using the following equation:

See PDF for diagram

where:

Xi is the daily ethylene glycol concentration for each day used to calculate the 14-day rolling average used in test results to justify implementing the reduced testing program

n is the number of ethylene glycol concentrations

2. Measuring an alternative parameter, such as carbon oxygen demand or biological oxygen demand, that is demonstrated to be directly proportional to the ethylene glycol concentration. The parameter shall be measured during the initial 14-day performance test during which the facility is shown to be in compliance with the ethylene glycol concentration standard whereby the ethylene glycol concentration is determined using the procedures described in subd. 1. The alternative parameter shall be measured on a daily basis and the average value of the alternative parameter shall be calculated on a daily basis over a rolling 14-day period of operating days. Each daily average value of the alternative parameter constitutes a performance test.

(7) REPORTING AND RECORDKEEPING REQUIREMENTS.

(a) Each owner or operator subject to the provisions of this section shall keep an up-to-date, readily-accessible record of the following information measured during each performance test and shall include the following information in the report of the initial performance test in addition to the written results of such performance tests as required under s. NR 440.08. Where a control device is used to comply with sub. (3) (a) 1. a. 4) only, a report containing performance test data need not be submitted, but a report containing the information in subd. 11. is required. Where a boiler or process heater with a design heat input capacity of 150 million Btu/hr or greater is used to comply with sub. (3) (a) a report containing performance test data need not be submitted, but a report containing the information in subd. 2. a. is required. The same information specified in this subsection shall be submitted in the reports of all subsequently required performance tests where either the emission control efficiency of a combustion device or the outlet concentration of TOC, minus methane and ethane, is determined.

1. When an incinerator is used to demonstrate compliance with sub. (3) except sub. (3) (a) 2.:

a. The average firebox temperature of the incinerator (or the average temperature upstream and downstream of the catalyst bed), measured at least every 15 minutes and averaged over the performance test period, and

b. The percent reduction of TOC (minus methane and ethane) achieved by the incinerator, the concentration of TOC (minus methane and ethane) (ppmv, by compound) at the outlet of the control device on a dry basis or the emission rate in terms of kg TOC (minus methane and ethane) per Mg of product (lb TOC/ton) at the outlet of the control device, whichever is appropriate. If supplemental combustion air is used, the TOC concentration corrected to 3% oxygen shall be recorded and reported.

2. When a boiler or process heater is used to demonstrate compliance with sub. (3) except sub. (3) (a) 2.:

a. A description of the location at which the vent stream is introduced into the boiler or process heater, and

b. For boilers or process heaters with a design heat input capacity of less than 150 million Btu/hr, all 3-hour periods of operation during which the average combustion temperature was more than 28°C (50°F) below the average combustion temperature during the most recent performance test at which compliance was determined.

3. When a flare is used to demonstrate compliance with sub. (3) except sub. (3) (a) 2.:

a. All visible emission readings, heat content determinations, flow rate measurements and exit velocity determinations made during the performance test,

b. Continuous records of the pilot flame heat-sensing monitoring, and

c. Records of all periods of operations during which the pilot flame is absent.

4. When an incinerator, boiler or process heater is used to demonstrate compliance with sub. (3) (a) 2., a description of the location at which the vent stream is introduced into the incinerator, boiler or process heater.

5. When a flare is used to demonstrate compliance with sub. (3) (a) 2.:

a. All visible emission readings made during the performance test,

b. Continuous records of the pilot flame heat-sensing monitoring, and

c. Records of all periods of operation during which the pilot flame is absent.

6. When an absorber is the final unit in a system to demonstrate compliance with sub. (3) except sub. (3) (a) 2., the specific gravity, or alternative parameter that is a measure of the degree of absorbing liquid saturation, if approved by the department, and average temperature, measured at least every 15 minutes and averaged over the performance test period, of the absorbing liquid, both measured while the vent stream is normally routed and constituted.

7. When a condenser is the final unit in a system to demonstrate compliance with sub. (3) except sub. (3) (a) 2. the average exit (product side) temperature, measured at least every 15 minutes and averaged over the performance test period while the vent stream is normally routed and constituted.

8. Daily measurement and daily average 14-day rolling average of the ethylene glycol concentration in the liquid effluent exiting the vacuum system servicing the polymerization reaction section, if an owner or operator is subject to sub. (3) (c) 1. b. 2) or 2. b. 2) or of the ethylene glycol concentration in the cooling water in the cooling tower, if subject to sub. (3) (c) 2. b. 3) or c. 3).

9. When a carbon adsorber is the final unit in a system to demonstrate compliance with sub. (3) except sub. (3) (a) 2., the concentration level or reading indicated by the organics monitoring device at the outlet of the adsorber, measured at least every 15 minutes and averaged over the performance test period while the vent stream is normally routed and constituted.

10. When an owner or operator seeks to comply with the requirements of this section by complying with the uncontrolled threshold emission rate cutoff provision in sub. (1) (d) and (e) or with the individual stream exemptions in sub. (1) (g), each process operation variable, for example, pressure, temperature, type of catalyst, that may result in an increase in the uncontrolled emission rate, if sub. (1) (d) or (e) is applicable or in an increase in the uncontrolled annual emissions or the VOC weight percent, as appropriate, if sub. (1) (g) is applicable, should such operating variable be changed.

11. When an owner or operator uses a control device to comply with sub. (3) (a) 1. a. 4) alone: all periods when the control device is not operating.

(b)

1. Each owner or operator subject to the provisions of this section shall submit with the initial performance test or, if complying with sub. (3) (a) 1. a. 4) as a separate report, an engineering report describing in detail the vent system used to vent each affected vent stream to a control device. This report shall include all valves and vent pipes that could vent the stream to the atmosphere, thereby bypassing the control device and identify which valves are car-sealed opened and which valves are car-sealed closed.

2. If a vent system containing valves that could divert the emission stream away from the control device is used, each owner or operator subject to the provisions of this section shall keep for at least 2 years up-to-date, readily accessible continuous records of:

a. All periods when flow is indicated if flow indicators are installed under sub. (5) (d) 1.

b. All times when maintenance is performed on car-sealed valves, when the car seal is broken and when the valve position is changed, that is, from open to closed for valves in the vent piping to the control device and from closed to open for valves that vent the stream directly or indirectly to the atmosphere bypassing the control device.

(c) Where an incinerator is used to comply with sub. (3), except sub. (3) (a) 1. a. 4) and 2., each owner or operator subject to the provisions of this section shall keep for at least 2 years up-to-date, readily accessible continuous records of:

1. The temperature measurements specified under sub. (5) (b) 1.

2. Records of periods of operation during which the parameter boundaries established during the most recent performance test are exceeded. Periods of operation during which the parameter boundaries established during the most recent performance test are exceeded are defined as follows:

a. For noncatalytic incinerators, all 3-hour periods of operation during which the average combustion temperature was more than 28°C (50°F) below the average combustion temperature during the most recent performance test at which compliance was demonstrated.

b. For catalytic incinerators, all 3-hour periods of operation during which the average temperature of the vent stream immediately before the catalyst bed is more than 28°C (50°F) below the average temperature of the vent stream during the most recent performance test at which compliance was demonstrated. The owner or operator also shall record all 3-hour periods of operation during which the average temperature difference across the catalyst bed is less than 80% of the average temperature difference across the catalyst bed during the most recent performance test at which compliance was demonstrated.

(d) Where a boiler or process heater is used to comply with sub. (3) except sub. (3) (a) 1. a. 4) and (a) 2., each owner or operator subject to the provisions of this section shall keep for at least 2 years up-to-date, readily accessible continuous records of:

1. Where a boiler or process heater with a heat input design capacity of 150 million Btu/hr or greater is used, all periods of operation of the boiler or process heater,

Note: Examples of such records could include records of steam use, fuel use or monitoring data collected pursuant to other state or federal regulatory requirements.

2. Where a boiler or process heater with a heat input design capacity of less than 150 million Btu/hr is used, all periods of operation during which the parameter boundaries established during the most recent performance test are exceeded. Periods of operation during which the parameter boundaries established during the most recent performance test are exceeded are defined as all 3-hour periods of operation during which the average combustion temperature was more than 28°C (50°F) below the average combustion temperature during the most recent performance test at which compliance was demonstrated.

(e) Where a flare is used to comply with sub. (3) except sub. (3) (a) 1. a. 4), each owner or operator subject to the provisions of this section shall keep for at least 2 years up-to-date, readily accessible continuous records of:

1. The flare or pilot light flame heat sensing monitoring specified under sub. (5) (b) 2., and

2. All periods of operation in which the flare or pilot flame, as appropriate, is absent.

(f) Where an adsorber, condenser, absorber or a control device other than a flare, incinerator, boiler or process heater is used to comply with sub. (3) except sub. (3) (a) 1. a. 4), each owner or operator subject to the provisions of this section shall keep for at least 2 years up-to-date, readily-accessible continuous records of the periods of operation during which the parameter boundaries established during the most recent performance test are exceeded. Where an owner or operator seeks to comply with sub. (3), periods of operation during which the parameter boundaries established during the most recent performance tests are exceeded are defined as follows:

1. Where an absorber is the final unit in a system, both of the following:

a. All 3-hour periods of operation during which the average absorbing liquid temperature was more than 11°C (20 °F) above the average absorbing liquid temperature during the most recent performance test at which compliance was demonstrated.

b. All 3-hour periods of operation during which the average absorbing liquid specific gravity was more than 0.1 unit above or more than 0.1 unit below, the average absorbing liquid specific gravity during the most recent performance test at which compliance was demonstrated, unless monitoring of an alternative parameter that is a measure of the degree of absorbing liquid saturation is approved by the department, in which case appropriate parameter boundaries and periods of operation during which they are exceeded will be defined.

2. Where a condenser is the final unit in a system, all 3-hour periods of operation during which the average condenser operating temperature was more than 6°C (10°F) above the average operating temperature during the most recent performance test at which compliance was demonstrated.

3. Where a carbon adsorber is the final unit in a system, all 3-hour periods of operation during which the average organic concentration level in the carbon adsorber gases is more than 20% greater than the exhaust gas concentration level or reading measured by the organics monitoring system during the most recent performance test at which compliance was demonstrated.

(g) Each owner or operator of an affected facility subject to the provisions of this section and seeking to demonstrate compliance with sub. (1) (j) or (3) shall keep up-to-date, readily accessible records of both of the following:

1. Any changes in production capacity, feedstock type or catalyst type or of any replacement, removal or addition of product recovery equipment.

2. The results of any performance test performed pursuant to the procedures specified by sub. (6).

(h) Each owner or operator of an affected facility that seeks to comply with the requirements of this section by complying with the uncontrolled threshold emission rate cutoff provision in sub. (1) (d) and (e) or with the individual stream exemptions in sub. (1) (g) shall keep for at least 2 years up-to-date, readily accessible records of any change in process operation that increases the uncontrolled emission rate of the process line in which the affected facility is located, if sub. (1) (d) or (e) is applicable or that increase the uncontrolled annual emissions or the VOC weight percent of the individual stream, if sub. (1) (g) is applicable.

(i) Each owner and operator subject to the provisions of this section is exempt from s. NR 440.07(3).

(j) The department will specify appropriate reporting and recordkeeping requirements where the owner or operator of an affected facility complies with the standards specified under sub. (3) other than as provided under par. (a) to (e).

(k) Each owner or operator that seeks to comply with the requirements of this section by complying with the uncontrolled threshold emission rate cutoff provision of sub. (1) (d) and (e), the individual stream exemptions of sub. (1) (g) or the requirements of sub. (3) shall submit to the department semiannual reports of the following recorded information, as applicable. The initial report shall be submitted within 6 months after the initial startup date.

1. Exceedances of monitored parameters recorded under pars. (c), (d) 2. and (f).

2. All periods recorded under par. (b) when the vent stream has been diverted from the control device.

3. All periods recorded under par. (d) when the boiler or process heater was not operating.

4. All periods recorded under par. (e) in which the flare or pilot flame was absent.

5. All periods recorded under par. (a) 8. when the 14-day rolling average exceeded the standard specified in sub. (3) (c) 1. b. 2), 3), 2. b. 2) or 3) as applicable.

6. Any change in process operations that increases the uncontrolled emission rate of the process line in which the affected facility is located, as recorded in par. (h).

7. Any change in process operations that increases the uncontrolled annual emissions or the VOC weight percent of the individual stream, as recorded in par. (h).

(L) Each owner or operator subject to the provisions of this section shall notify the department of the specific provisions of sub. (1) (d) or (e), (3) or (4), as applicable, with which the owner or operator has elected to comply. Notification shall be submitted with the notification of initial startup required by sub. (1) (c). If an owner or operator elects at a later date to use an alternative provision of sub. (3) or (4) with which he or she will comply or becomes subject to sub. (3) or (4) for the first time, that is, the owner or operator can no longer meet the requirements of this section by complying with the uncontrolled threshold emission rate cutoff provision in sub. (1) (d) or (e), then the owner or operator shall notify the department 90 days before implementing a change and, upon implementing a change, a performance test shall be performed as specified in sub. (6).

Wis. Admin. Code Department of Natural Resources NR 440.647

Cr. Register, July, 1993, No. 451, eff. 8-1-93; am. (4) (c), Register, December, 1995, No. 480, eff. 1-1-96; CR 06-109: am. (1) (a) 4. a., (b) 1. b. and (d), (2) (a) 12., 21., 22., 30. and 31., (3) (a) 1. c. (intro.), (b) 1. a. and b., (c) 1. a. 1) to 3), 2. a. and b. 1) to 3), (4) (d), (6) (c) 1., (f) 1. and 3., (j) 1. (intro.), a. and 2., (7) (a) 1. b., (f) 1. (intro.) and a. and (g) (intro.) and 1., cr. (1) (j) and (6) (h) 1., r. and recr. (6) (d) 1. (intro.), (f) (intro.), (g) 2. and 3., (h) (intro.), (j) 1. d., renum. (6) (h) 1. and 2. to be 2. and 3. and am. 3. Register May 2008 No. 629, eff. 6-1-08; correction in (1) (j) 2. made under s. 13.92(4) (b) 7, Stats., Register May 2008 No 629.