California Code, Public Resources Code - PRC § 25550

(a) “Buyer of natural gas” means a gas corporation, local publicly owned gas utility, noncore gas customer, or core transport agent.

(b) “Core transport agent” has the same meaning as set forth in subdivision (b) of Section 980 of the Public Utilities Code.

(c) “Division” means the Geologic Energy Management Division.

(d) “Gas corporation” has the same meaning as set forth in Section 222 of the Public Utilities Code.

(e) “Natural gas infrastructure” means a natural gas facility used for the production, gathering and boosting, processing, transmission, storage, or distribution necessary for the delivery of natural gas to end-use customers in California.

(f) “Noncore gas customer” means an entity that procures directly from natural gas producers or natural gas marketers and is not a gas corporation or local publicly owned gas utility.

(g) “Procure” means to acquire through ownership or contract.

(h) “Tracking” means using a system that communicates the pathway of a given volume of natural gas from its initial production to its delivery to end-use customers in this state.