The owner or operator of a solvent metal cold cleaner, open top vapor degreasing operation, or conveyorized degreasing operation shall use the following test methods:

1. (a) Visual inspection for compliance with equipment specifications and operating procedures; and

2. (b) When compliance is by add-on control systems:

   1. (1) Methods 1-4 in 40 CFR 60, Appendix A, for determining flow rates;
   2. (2) Methods 18, 25, 25A or 25B in 40 CFR 60, Appendix A, for determining gaseous organic concentrations; and
   3. (3) ASTM D323-08 for measuring solvent true vapor pressure.

Source. #9802, eff 10-31-10 (from Env-A 804.21); ss by #12762, eff 5-1-19