Wis. Admin. Code Department of Natural Resources NR 469.09

Current through October 28, 2024

Section NR 469.09 - Test methods

(1) Except as provided in subs. (6) and (7) for continuous web cleaning machines, each owner or operator of a batch vapor or in-line solvent cleaning machine complying with an idling emission limit standard in s. NR 469.04(2) (a) 2. or (b) 2. or (3) (a) 2. or (b) 2. shall determine the idling emission rate of the solvent cleaning machine using Method 307 in Appendix A of 40 CFR part 63, incorporated by reference in s. NR 484.04.

(2) Except as provided in sub. (7) for continuous web cleaning machines, each owner or operator of a batch vapor or in-line solvent cleaning machine complying with s. NR 469.08 shall on the first operating day of every month ensure that the solvent cleaning machine system contains only clean liquid solvent as defined in s. NR 469.02(5). A fill line shall be indicated during the first month the measurements are made. The solvent level within the machine shall be returned to the same fill line each month, immediately prior to calculating monthly emissions as specified in sub. (3). The solvent cleaning machine does not have to be emptied and filled with fresh unused solvent prior to the calculations.

(3) Except as provided in subs. (6) and (7) for continuous web cleaning machines, each owner or operator of a batch vapor or in-line solvent cleaning machine complying with s. NR 469.08(1) (a) or (b) shall on the first operating day of the month comply with the requirements specified in pars. (a) to (c).

(a) Using the records of all solvent additions and deletions for the previous monthly reporting period required under s. NR 469.08(1) (a) 1. or (b) 1., determine solvent emissions (Ei or En) using equation 2 for cleaning machines with a solvent/air interface and equation 3 for cleaning machines without a solvent/air interface.

See PDF for diagram

where:

E_i is the total halogenated HAP solvent emissions from the solvent cleaning machine during the most recent monthly reporting period i, kilograms of solvent per square meter of solvent/air interface area per month (pounds of solvent per square foot of solvent/air interface area per month)

E_n is the total halogenated HAP solvent emissions from the solvent cleaning machine during the most recent monthly reporting period i, kilograms of solvent per month (pounds of solvent per month)

SA_i is the total amount of halogenated HAP liquid solvent added to the solvent cleaning machine during the most recent monthly reporting period i, kilograms of solvent per month (pounds of solvent per month)

LSR_i is the total amount of halogenated HAP liquid solvent removed from the solvent cleaning machine during the most recent monthly reporting period i, kilograms of solvent per month (pounds of solvent per month)

SSR_i is the total amount of halogenated HAP solvent removed from the solvent cleaning machine in solid waste, obtained as described in par. (b), during the most recent monthly reporting period i, kilograms of solvent per month (pounds of solvent per month)

AREA_i is the solvent/air interface area of the solvent cleaning machine, square meters, (square feet)

(b) Determine SSRi using the method specified in subd. 1. or 2.

1. From tests conducted using Method 25D in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 484.04.

2. By engineering calculations included in the compliance report, which is described in s. NR 469.12(6).

(c) Determine the monthly rolling average, EA, for the 3-month period ending with the most recent reporting period using equation 4 for cleaning machines with a solvent/air interface or equation 5 for cleaning machines without a solvent/air interface.

See PDF for diagram

where:

EA_i is the average halogenated HAP solvent emissions over the preceding 3 monthly reporting periods, kilograms of solvent per square meter of solvent/air interface area per month (pounds of solvent per square foot of solvent/air interface area per month)

EA_n is the average halogenated HAP solvent emissions over the preceding 3 monthly reporting periods, kilograms of solvent per month (pounds of solvent per month)

E_ij is the halogenated HAP solvent emissions for each month (j) for the most recent 3 monthly reporting periods, kilograms of solvent per square meter of solvent/air interface area per month (pounds of solvent per square foot of solvent/air interface area per month)

E_nj is the halogenated HAP solvent emissions for each month (j) for the most recent 3 monthly reporting periods, kilograms of solvent per month (pounds of solvent per month)

j=1 is the most recent monthly reporting period

j=2 is the monthly reporting period immediately prior to j=1

j=3 is the monthly reporting period immediately prior to j=2

(4) Each owner or operator of a batch vapor or in-line solvent cleaning machine using dwell to comply with ss. NR 469.04 to 469.07 shall determine the appropriate dwell time for each part or parts basket using the procedure specified in pars. (a) and (b).

(a) Determine the amount of time for the part or parts basket to cease dripping once placed in the vapor zone. The part or parts basket used for this determination shall be at room temperature before being placed in the vapor zone.

(b) The proper dwell time for parts to remain in the freeboard area above the vapor zone is no less than 35% of the time determined in par. (a).

(5) An owner or operator of a source shall determine the source's potential to emit from all solvent cleaning machines, using the procedures described in pars. (a) to (c).

(a) Determine the potential to emit for each individual solvent cleaning machine using equation 6.

See PDF for diagram

where:

PTE_i is the potential to emit for solvent cleaning machine i, kilograms of solvent per year (pounds of solvent per year)

H_i is hours of operation for solvent cleaning machine i (hours per year)

= 8760 hours per year, unless otherwise restricted by a federally enforceable requirement

W_i is the working mode uncontrolled emission rate for solvent cleaning machine i, kilograms per square meter per hour (pounds per square foot per hour)

= 1.95 kilograms per square meter per hour (0.40 pounds per square foot per hour) for batch vapor and cold cleaning machines

= 1.12 kilograms per square meter per hour (0.23 pounds per square foot per hour) for in-line cleaning machines

SAI_i is the solvent/air interface area of solvent cleaning machine i, square meters, (square feet). Section NR 469.02(38) defines the solvent/air interface area for those machines that have a solvent/air interface. Solvent cleaning machines that do not have a solvent/air interface shall calculate a solvent/air interface area using the procedure in par. (b).

(b) Solvent cleaning machines that do not have a solvent/air interface shall calculate a solvent/air interface area using equation 7.

See PDF for diagram

where:

SAI is the solvent/air interface area (square meters)

Vol is the cleaning capacity of the solvent cleaning machine (cubic meters)

Note: Equation 7 requires the use of metric units. Multiply cubic feet by 0.02832 to obtain cubic meters. Multiply square meters by 10.764 to obtain square feet.

(c) Sum the PTE i for all solvent cleaning machines to obtain the total potential to emit for solvent cleaning machines at the facility.

(6) Each owner or operator of a continuous web cleaning machine using a squeegee system to comply with s. NR 469.073(3) shall determine the maximum product throughput using the method in this subsection. The maximum product throughput for each squeegee type used at a facility shall be determined prior to December 2, 1999, the compliance date for these units.

(a) Conduct daily visual inspections of the continuous web part. This monitoring shall be conducted at the point where the continuous web part exits the squeegee system. It is not necessary for the squeegees to be new at the time monitoring is begun if the following 2 conditions are met:

1. The continuous web part leaving the squeegee system has no visible solvent film.

2. The amount of continuous web that has been processed through the squeegees since the last replacement is known.

(b) Continue daily monitoring until a visible solvent film is noted on the continuous web part.

(c) Determine the length of continuous web product that has been cleaned using the squeegee since it was installed.

(d) The maximum product throughput for the purposes of this chapter is equal to the time it takes to clean 95% of the length of product determined in par. (c). This time period, in days, may vary depending on the amount of continuous web product cleaned each day.

(7) Each owner or operator of a continuous web cleaning machine demonstrating compliance with the alternative standard of s. NR 469.08(4) shall, on the first day of every month, ensure that the solvent cleaning machine contains only clean liquid solvent. A fill-line shall be indicated during the first month the measurements are made. The solvent level with the machine shall be returned to the same fill-line each month, immediately prior to calculating overall cleaning system control efficiency emissions as specified in sub. (8). The solvent cleaning machine does not need to be emptied and filled with fresh unused solvent prior to the calculation.

(8) Each owner or operator of a continuous web cleaning machine complying with s. NR 469.08(4) shall, on the first operating day of the month, determine the overall cleaning system control efficiency (Eo) for the previous month using equation 8 and the records of all solvent additions, solvent deletions and solvent recovered from the carbon adsorption system for the previous monthly reporting period required under s. NR 469.11(5).

See PDF for diagram

where:

E_o is the overall cleaning system control efficiency

R_i is the total amount of halogenated HAP liquid solvent recovered from the carbon adsorption system and recycled to the solvent cleaning system during the most recent monthly reporting period, i, kilograms of solvent per month

Sa_i is the total amount of halogenated HAP liquid solvent added to the solvent cleaning system during the most recent monthly reporting period, i, kilograms of solvent per month

SSR_i is the total amount of halogenated HAP solvent removed from the solvent cleaning system in solid waste, obtained as described in sub. (3) (b), during the most recent monthly reporting period, i, kilograms of solvent per month

Wis. Admin. Code Department of Natural Resources NR 469.09

Cr. Register, March, 1997, No. 495, eff. 4-1-97; CR 07-105: am. (1), (2) and (3) (intro.), cr. (6), (7) and (8) Register December 2008 No. 636, eff. 1-1-09.