Section R. 325.17402 - Prevention of liquid solvent and solvent vapor loss; piping of recovered dry cleaning solventRule 402.
(1) A dry cleaning system shall be designed, installed, operated, and maintained in a manner to prevent the loss of liquid solvent or solvent vapor.(2) Recovered dry cleaning solvent from all types of recovery equipment shall be piped directly into an enclosed tank.(3) Pipe joint compounds and dry cleaning machine gasketing shall be made of a material which resists penetration and deterioration by solvents or solvent vapors.Mich. Admin. Code R. 325.17402