Section NR 469.08 - Alternative standards(1) As an alternative to meeting the requirements in ss. NR 469.04 to 469.07, each owner or operator of a batch vapor or in-line solvent cleaning machine may elect to comply with the requirements of this section. An owner or operator of a solvent cleaning machine who elects to comply with this section shall comply with the requirements specified in par. (a) or (b). (a) If the cleaning machine has a solvent/air interface, the owner or operator shall comply with both of the following requirements:1. Maintain a log of solvent additions and deletions for each solvent cleaning machine.2. Ensure that the emissions from each solvent cleaning machine are equal to or less than the applicable emission limit presented in Table 6 as determined using the procedures in s. NR 469.09(2) and (3).(b) If the cleaning machine is a batch vapor cleaning machine and does not have a solvent/air interface, the owner or operator shall comply with all of the following requirements: 1. Maintain a log of solvent additions and deletions for each solvent cleaning machine.2. Ensure that the emissions from each solvent cleaning machine are equal to or less than the appropriate limits as described as follows:a. For cleaning machines with a cleaning capacity, as reported in s. NR 469.12(4) (c), that is less than or equal to 2.95 cubic meters (104 cubic feet), the emission limit shall be determined using either Table 7 or equation 1. If using Table 7, and the cleaning capacity of the cleaning machine falls between 2 cleaning capacity sizes, then the lower of the 2 emission limits applies.b. For cleaning machines with a cleaning capacity, as reported in s. NR 469.12(4) (c), that is greater than 2.95 cubic meters (104 cubic feet), the emission limit shall be determined using equation 1. EL = 330 * (Vol)0.6 (Equation 1)
where:
EL is the 3-month rolling average monthly emission limit (kilograms/month)
Vol is the cleaning capacity of the solvent cleaning machine (cubic meters)
Note: Equation 1 requires the use of metric units. Multiply cubic feet by 0.02832 to obtain cubic meters. Multiply kilograms by 2.2046 to obtain pounds.
(2) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with sub. (1) shall demonstrate compliance with the applicable 3-month rolling average monthly emission limit on a monthly basis as described in s. NR 469.09(2) and (3). (3) If the applicable 3-month rolling average emission limit is not met, an exceedance has occurred. All exceedances shall be reported as required in s. NR 469.12(7).(4) As an alternative to meeting the requirements in ss. NR 469.04 to 469.077, each owner or operator of a continuous web cleaning machine may demonstrate an overall cleaning system control efficiency of 70% or greater using the procedures in s. NR 469.09(7). This demonstration may be made for either a single cleaning machine or for a solvent cleaning system that contains one or more cleaning machines and ancillary equipment, such as storage tanks and distillation units. If the demonstration is made for a cleaning system, the facility shall identify any modifications required to the procedures in s. NR 469.09(7) and they shall be approved by the department. Table 6. Emission Limits for Batch Vapor and In-line Solvent Cleaning Machines With a Solvent/Air Interface
Solvent Cleaning Machine | 3-Month Rolling Average Monthly Emission Limit kg/m2/month (lb/ft2/month) |
Batch vapor solvent cleaning machines | 150 (30.7) |
Existing in-line solvent cleaning machines | 153 (31.4) |
New in-line solvent cleaning machines | 99 (20.2) |
Table 7. Emission Limits for Cleaning Machines Without a Solvent/Air Interface1,2
Cleaning capacity (cubic meters) | 3-Month rolling average monthly emission limit (kilograms/ month) | Cleaning capacity (cubic meters) | 3-Month rolling average monthly emission limit (kilograms/ month) | Cleaning capacity (cubic meters) | 3-Month rolling average monthly emission limit (kilograms/ month) |
0.00 | 0 | 1.00 | 330 | 2.00 | 500 |
0.05 | 55 | 1.05 | 340 | 2.05 | 508 |
0.10 | 83 | 1.10 | 349 | 2.10 | 515 |
0.15 | 106 | 1.15 | 359 | 2.15 | 522 |
0.20 | 126 | 1.20 | 368 | 2.20 | 530 |
0.25 | 144 | 1.25 | 377 | 2.25 | 537 |
0.30 | 160 | 1.30 | 386 | 2.30 | 544 |
0.35 | 176 | 1.35 | 395 | 2.35 | 551 |
0.40 | 190 | 1.40 | 404 | 2.40 | 558 |
0.45 | 204 | 1.45 | 412 | 2.45 | 565 |
0.50 | 218 | 1.50 | 421 | 2.50 | 572 |
0.55 | 231 | 1.55 | 429 | 2.55 | 579 |
0.60 | 243 | 1.60 | 438 | 2.60 | 585 |
0.65 | 255 | 1.65 | 446 | 2.65 | 592 |
0.70 | 266 | 1.70 | 454 | 2.70 | 599 |
0.75 | 278 | 1.75 | 462 | 2.75 | 605 |
0.80 | 289 | 1.80 | 470 | 2.80 | 612 |
0.85 | 299 | 1.85 | 477 | 2.85 | 619 |
0.90 | 310 | 1.90 | 485 | 2.90 | 625 |
0.95 | 320 | 1.95 | 493 | 2.95 | 632 |
1 Divide cubic feet by 35.31 to obtain the cleaning capacity in cubic meters.
2 Multiply kilograms/month by 2.2046 to obtain the 3-month rolling average in pounds/month.
Wis. Admin. Code Department of Natural Resources NR 469.08
Cr. Register, March, 1997, No. 495, eff. 4-1-97; CR 07-105: r. (1) (c), cr. (4) Register December 2008 No. 636, eff. 1-1-09; correction in (1) (intro.) made under 13.92(4) (b) 7., Stats., Register December 2008 No. 636.