Sierrita Gas Pipeline LLC Cash Out Prices The reference prices, used to determine the Cash Out Index Price, as defined in Sections 1.7 and 10.3 of the General Terms and Conditions of Sierrita Gas Pipeline's Original Volume No. 1 Tariff for the month of December 2018 are as follows: El Paso Natural Gas Co. – Permian Basin FOM Price $1.3000 Daily Average Price $1.9931 Southern California Gas Co. – City Gate FOM Price $13.8500 Daily Average Price $7.9708 Average (SoCal-City Gate, Permian Basin) FOM Average Price $7.5750 If you have any questions or need additional information, please call your Marketing Account Representative.