California Gas Transmission will start receiving a slug of high Hydrogen Sulfide (H2S) into its system around 2:27 a.m. PST on Monday, January 15, 2024. The H2S is coming in at the Gas Transmission Northwest (GTN) interconnect at Malin. Initial readings show approximately 1 hour of high H2S. 3.5PPM is considered our highest limit of H2S and approximately 30 minutes of the 1 hour of slug is over 3.5PPM. 

GTN and PG&E is taking steps to try to blend and mitigate the high H2S; however, given the speed in which it is traveling, customers and interconnecting operators might experience the high H2S at their metering facilities.

If you have any questions about this information, please contact your CGT Account Manager.