Section 469.10. Monitoring procedures.

 

(1)  Except as provided in sub. (7) , each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the equipment standards in s. NR 469.04 (2) (a) 1. or (b) 1. or (3) (a) 1. or (b) 1. shall conduct monitoring and record the results on a weekly basis for the control devices, as appropriate, specified in pars. (a) to (e) .

(a) If a freeboard refrigeration device is used to comply with these standards, the owner or operator shall use a thermometer or thermocouple to measure the temperature at the center of the air blanket during the idling mode.

(b) If a superheated vapor system is used to comply with these standards, the owner or operator shall use a thermometer or thermocouple to measure the temperature at the center of the superheated solvent vapor zone while the solvent cleaning machine is in the idling mode.

(c) If a squeegee system, air knife system or combination squeegee and air knife system is used to comply with the requirements of s. NR 469.073 or 469.077 , the owner or operator shall visually inspect the continuous web part exiting the solvent cleaning machine to ensure that no solvent film is visible on the part.

(d) Except as provided in par. (e) , if a superheated part system is used to comply with the requirements of s. NR 469.073 or 469.077 , the owner or operator shall use a thermometer, thermocouple or other temperature measurement device to measure the temperature of the continuous web part while it is in the solvent cleaning machine. The measurement may also be taken at the exit of the solvent cleaning machine.

(e) As an alternative to complying with par. (d) , the owner or operator may provide data, sufficient to satisfy the department, that demonstrate that the part temperature remains above the boiling point of the solvent at all times that the part is within the continuous web solvent cleaning machine. These data could include design and operating conditions such as information supporting any exothermic reaction inherent in the processing.

(2)  Except as provided in sub. (7) , each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the equipment standards of s. NR 469.04 (2) (a) 1. or (b) 1. or (3) (a) 1. or (b) 1. shall conduct monitoring and record the results on a monthly basis for the control devices, as appropriate, specified in pars. (a) and (b) .

(a) If a working-mode, downtime-mode or idling-mode cover is used to comply with these standards, the owner or operator shall conduct a visual inspection to determine if the cover is opening and closing properly, completely covers the cleaning machine openings when closed, and is free of cracks, holes and other defects.

(b) If dwell is used, the owner or operator shall determine the actual dwell time by measuring the period of time that parts are held within the freeboard area of the solvent cleaning machine after cleaning.

(3)  Except as provided in sub. (7) , each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the equipment or idling emission standards in ss. NR 469.04 to 469.07 shall monitor the hoist speed as described in pars. (a) to (d) .

(a) The owner or operator shall determine the hoist speed by measuring the time it takes for the hoist to travel a measured distance. The speed is equal to the distance in meters (feet) divided by the time in minutes (meters per minute or feet per minute).

(b) The monitoring shall be conducted monthly. If after the first year, no exceedances of the hoist speed are measured, the owner or operator may begin monitoring the hoist speed quarterly.

(c) If an exceedance of the hoist speed occurs during quarterly monitoring, the monitoring frequency shall return to monthly until another year of compliance without an exceedance is demonstrated.

(d) If an owner or operator can demonstrate to the department's satisfaction in the initial compliance report that the hoist cannot exceed a speed of 3.4 meters per minute (11 feet per minute), the required monitoring frequency shall be quarterly, including during the first year of compliance.

(4)  Except as provided in sub. (7) , each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the equipment standards in s. NR 469.04 (2) (a) 1. or (b) 1. or (3) (a) 1. or (b) 1. using a reduced room draft shall conduct monitoring and record the results as specified in par. (a) or (b) .

(a) If the reduced room draft is maintained by controlling room parameters by redirecting fans, closing doors and windows, etc., the owner or operator shall conduct an initial monitoring test of the wind speed and of room parameters, quarterly monitoring of wind speed and weekly monitoring of room parameters as specified in subds. 1. and 2.

1. Measure the wind speed within 15.2 centimeters (6 inches) above the top of the freeboard area of the solvent cleaning machine using the following procedure:

a. Determine the direction of the wind current by slowly rotating a velometer or similar device until the maximum speed is located.

b. Orient a velometer in the direction of the wind current at each of the 4 corners of the machine.

c. Record the reading for each corner.

d. Average the values obtained at each corner and record the average wind speed.

2. Monitor on a weekly basis the room parameters established during the initial compliance test that are used to achieve the reduced room draft.

(b) If a full or partial enclosure is used to achieve a reduced room draft, the owner or operator shall conduct an initial monitoring test and, thereafter, monthly monitoring tests of the wind speed within the enclosure using the procedure specified in subds. 1. and 2. and a monthly visual inspection of the enclosure to determine if it is free of cracks, holes and other defects.

1. Determine the direction of the wind current in the enclosure by slowly rotating a velometer inside the entrance to the enclosure until the maximum speed is located.

2. Record the maximum wind speed.

(5)  Except as provided in sub. (7) , each owner or operator using a carbon adsorber to comply with this chapter shall measure and record the concentration of each halogenated HAP compound in the exhaust of the carbon adsorber weekly with a colorimetric detector tube. This test shall be conducted while the solvent cleaning machine is in the working mode and is venting to the carbon adsorber. The exhaust concentration shall be determined using the procedure specified in pars. (a) to (c) .

(a) Use a colorimetric detector tube designed to measure a concentration of 100 parts per million by volume of the particular halogenated HAP compound in air to an accuracy of " 25 parts per million by volume. If the cleaning machine uses solvent that contains two or more halogenated HAP compounds, use one compound-specific colorimetric detector tube per halogenated HAP compound.

(b) Use the colorimetric detector tubes according to the manufacturer's instructions.

(c) Provide a sampling port for monitoring within the exhaust outlet of the carbon adsorber that is easily accessible and located at least 8 stack or duct diameters downstream from any flow disturbance such as a bend, expansion, contraction or outlet; downstream from no other inlet; and at least 2 stack or duct diameters upstream from any flow disturbance such as a bend, expansion, contraction, inlet or outlet.

(6)  Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the idling emission limit standards of s. NR 469.04 (2) (a) 2. or (b) 2. or (3) (a) 2. or (b) 2. shall comply with the requirements specified in pars. (a) and (b) .

(a) If using controls listed in subs. (1) to (5) , the owner or operator shall comply with the monitoring frequency requirements in subs. (1) to (5) .

(b) If using controls not listed in subs. (1) to (5) , the owner or operator shall establish the monitoring frequency for each control and submit it to the department for approval in the test report specified in s. NR 469.12 (3) (f) .

(7)  Each owner or operator using a control device listed in subs. (1) to (5) may use alternative monitoring methods and procedures as specified in s. NR 460.07 (6) .

History: Cr. Register, March, 1997, No. 495 , eff. 4-1-97; CR 07-105 : am. (1), (intro.), cr. (1) (c) to (e) Register December 2008 No. 636 , eff. 1-1-09.