Does not pollute our drinking water

Roy Sakaida, Supervising Water Resource Control Engineer, CRWQCB, provided a letter following a visit in 1994 to observe a live demonstration of one of the first commercial centrifugal liquid CO₂ cleaning systems at Haskel International, Inc.

“Thank you for the invitation to the demonstration of your CO₂ Cleaning System.”

“The system appears to be useful for replacing organic-solvent based cleaning of a variety of materials. Since CO₂ is the only discharge to the environment and any contaminant removed from products in the cleaning process can be collected for proper disposal, there should be no problem with respect to requirements of this Board if the system is operated properly.”

Roy R. Sakaida
Supervising Water Resource Control Engineer
California Regional Water Quality Control Board

Source:
Letter to Deflex Corporation, June 10, 1994