R307-347-6. 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 65% or greater 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) High-volume, low-pressure (HVLP) spray; or (h) 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 R307-347-7.