Code of Maine Rules
06 - DEPARTMENT OF ENVIRONMENTAL PROTECTION
096 - DEPARTMENT OF ENVIRONMENTAL PROTECTION - GENERAL
Chapter 130 - SOLVENT CLEANERS
Section 096-130-9 - Monitoring and Record Keeping

Universal Citation: 06 ME Code Rules ยง 096-130-9

Current through 2024-38, September 18, 2024

The owner or operator of a solvent cleaning machine shall maintain a monthly record of the amount of solvent added to the unit and keep such records for a period of two years. In addition, the operator of a solvent cleaning machine subject to the provisions of Sections 4 though 6 of this Chapter shall conduct monitoring and record keeping as outlined below. These records shall be maintained for a period of six years.

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. Measurements and recordings shall be made weekly;

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. Measurements and recordings shall be made weekly;

C. If a cover (working-mode, downtime-mode, and/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. Observations and recordings shall be made weekly;

D. 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. Observations and recordings shall be made monthly;

E. 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 divided by the time in minutes (meters per minute). Measurements and recordings shall be made monthly;

F. The owner or operator of a batch vapor or in-line solvent cleaning machine complying using reduced room draft, maintained by controlling room parameters (i.e., redirecting fans, closing doors and windows, etc.), shall conduct monitoring and record the results as follows:

(1) Initially measure the windspeed within 6 inches above the top of the freeboard area of the solvent cleaning machine in accordance with the following:
(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 four corners of the machine;

(c) Record the reading for each corner; and

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

(2) Record the room parameters established during the initial compliance test to achieve the reduced room draft;

(3) Quarterly monitor of the windspeed in accordance with paragraph (1); and

(4) Weekly monitoring of the room parameters established during the initial compliance test to achieve the reduced room draft.

G. If an enclosure (full or partial) is used to achieve reduced room draft, the owner or operator shall conduct an initial monitoring test and, thereafter, monthly monitoring tests of the windspeed within the enclosure by slowly rotating a velometer inside the entrance to the enclosure until the maximum speed is located and record the maximum wind speed. The owner or operator shall also conduct a monthly visual inspection of the enclosure to determine if it is free of cracks, holes and other defects.

H. The owner or operator using a carbon adsorber to comply with this Chapter shall measure and record the concentration of VOC solvent 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 a colorimetric detector tube designed to measure a concentration of 25 parts per million by volume of solvent in air to an accuracy of plus or minus 25 parts per million by volume or as approved by the DEP and EPA. The concentration shall be determined through a sampling port for monitoring within the exhaust outlet that is easily accessible and located at least 2 stack or duct diameters upstream or downstream from any flow disturbance such as a bend, expansion, contraction, or outlet and downstream from no other inlet, or as approved by DEP and EPA.

I. All records shall be made available to the Department or EPA upon request.

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