4 Colo. Code Regs. § 723-4-4527
Current through Register Vol. 47, No. 22, November 25, 2024
Section 4 CCR 723-4-4527 - Measurement and Accounting(a) Greenhouse gas emissions shall include methane and carbon dioxide emissions measured separately in metric tons and presented in carbon dioxide equivalent. Baseline emissions, system-wide emissions, and reductions in emissions shall be based on the most recent clean heat workbook published by the Air Pollution Control Division, and approved by the Commission through rule or order, to guide the proper calculation and reporting of both carbon dioxide and methane emissions. (I) For any utility that establishes its baseline emissions using default emission rate factors, the utility may petition the Commission as part of its application to approve a clean heat plan, filed pursuant to rule 4729 or 4734, to adjust its baseline emissions based on empirical data of distribution system methane leakage emissions, provided that:(A) the measured leakage data utilizes advanced leak detection technologies and approaches, consistent with directives from the Air Pollution Control Division or the Commission; and(B) the utility continues to use advanced leak detection technologies and approaches for all future measurement years.(b) The utility shall calculate greenhouse gas emission projections and baselines to include the following components: (I) methane leaked from the transportation and delivery of gas from the gas distribution and service pipelines from the city gate to its customer's end-use;(II) carbon dioxide emissions resulting from the combustion of gas by residential, commercial, and industrial customers who themselves are not otherwise subject to federal greenhouse gas emission reporting and excluding all transportation customers; and(III) emissions of methane resulting from leakage from delivery of gas to other LDCs.