Section 98.447 - Records that must be retained(a) You must follow the record retention requirements specified by § 98.3(g) . In addition to the records required by § 98.3(g) , you must retain the records specified in paragraphs (a)(1) through (7) of this section, as applicable. You must retain all required records for at least 3 years. (1) Quarterly records of CO2 received, including mass flow rate of contents of containers (mass or volumetric) at standard conditions and operating conditions, operating temperature and pressure, and concentration of these streams.(2) Quarterly records of produced CO2, including mass flow or volumetric flow at standard conditions and operating conditions, operating temperature and pressure, and concentration of these streams.(3) Quarterly records of injected CO2 including mass flow or volumetric flow at standard conditions and operating conditions, operating temperature and pressure, and concentration of these streams.(4) Annual records of information used to calculate the CO2 emitted by surface leakage from leakage pathways.(5) Annual records of information used to calculate the CO2 emitted from equipment leaks and vented emissions of CO2 from equipment located on the surface between the flow meter used to measure injection quantity and the injection wellhead.(6) Annual records of information used to calculate the CO2 emitted from equipment leaks and vented emissions of CO2 from equipment located on the surface between the production wellhead and the flow meter used to measure production quantity.(7) Any other records as specified for retention in your EPA-approved MRV plan.(b) You must complete your monitoring plans, as described in § 98.3(g)(5) , by April 1 of the year you begin collecting data. 75 FR 75078 , Dec. 1, 2010, as amended at 76 FR 73906 , Nov. 29, 2011