What are the sulfur specifications for PUC Quality natural gas?
The Public Utilities Commission of the State of California has issued General Order 58-A titled “Standards For Gas Service In The State of California” (last revised April 12, 1989). Title 7 (Purity of Gas) of the General Order specifies hydrogen sulfide and total sulfur standards for any gas supplied by a utility. Section (a) limits hydrogen sulfide to 0.25 grain per 100 standard cubic feet. Section (b) limits total sulfur to 5 grains per 100 standard cubic feet (which is equivalent to 85 ppmv as S or 80 ppmv as H2S.
