R307-346-6. Work Practices

  (1) The owner or operator shall:

  (a) Store all VOC-containing coatings, thinners, and cleaning materials in closed containers;

  (b) Minimize spills of VOC-containing coatings, thinners, and cleaning materials;

  (c) Clean up spills immediately;

  (d) Convey any coatings, thinners, and cleaning materials in closed containers or pipes;

  (e) Close mixing vessels that contain VOC coatings and other materials except when specifically in use; and

  (f) Minimize usage of solvents during cleaning of storage, mixing, and conveying equipment.

  (2) No person shall apply any coating unless the coating application method achieves a demonstrated 65% transfer efficiency.

  The following applications achieve a minimum of 65% transfer efficiency and shall be operated in accordance with the manufacturers specifications:

  (a) Electrostatic application;

  (b) Electrodeposition;

  (c) Brush coat;

  (d) Flow coat;

  (e) Roll coat;

  (f) Dip coat;

  (g) Continuous coating;

  (h) High-volume, low-pressure (HVLP) spray; or

  (i) Other application method capable of achieving 65% or greater transfer efficiency, as certified by the manufacturer.

  (3) Solvent cleaning operations shall be performed using cleaning materials having a VOC composite vapor pressure no greater than 1 mm Hg at 20 degrees Celsius, unless an add-on control device is used as specified in R307-346-7.