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40 C.F.R. § 98.443

Calculating CO2 geologic sequestration.

§ 98.443 Calculating CO2 geologic sequestration.

You must calculate the mass of CO2 received using CO2 received equations (Equations RR-1 to RR-3 of this section), unless you follow the procedures in § 98.444(a)(4). You must calculate CO2 sequestered using injection equations (Equations RR-4 to RR-6 of this section), production/recycling equations (Equations RR-7 to RR-9 of this section), surface leakage equations (Equation RR-10 of this section), and sequestration equations (Equations RR-11 and RR-12 of this section). For your first year of reporting, you must calculate CO2 sequestered starting from the date set forth in your approved MRV plan.

(a) You must calculate and report the annual mass of CO2 received by pipeline using the procedures in paragraphs (a)(1) or (a)(2) of this section and the procedures in paragraph (a)(3) of this section, if applicable.

(1) For a mass flow meter, you must calculate the total annual mass of CO2 in a CO2 stream received in metric tons by multiplying the mass flow by the CO2 concentration in the flow, according to Equation RR-1 of this section. You must collect these data quarterly. Mass flow and concentration data measurements must be made in accordance with § 98.444.

er01de10.172.gif

where:

CO2T,r = Net annual mass of CO2 received through flow meter r (metric tons). Qr,p = Quarterly mass flow through a receiving flow meter r in quarter p (metric tons). Sr,p = Quarterly mass flow through a receiving flow meter r that is redelivered to another facility without being injected into your well in quarter p (metric tons). CCO2,p,r = Quarterly CO2 concentration measurement in flow for flow meter r in quarter p (wt. percent CO2, expressed as a decimal fraction). p = Quarter of the year. r = Receiving flow meter.

(2) For a volumetric flow meter, you must calculate the total annual mass of CO2 in a CO2 stream received in metric tons by multiplying the volumetric flow at standard conditions by the CO2 concentration in the flow and the density of CO2 at standard conditions, according to Equation RR-2 of this section. You must collect these data quarterly. Volumetric flow and concentration data measurements must be made in accordance with § 98.444.

er01de10.173.gif

where:

CO2T,r = Net annual mass of CO2 received through flow meter r (metric tons). Qr,p = Quarterly volumetric flow through a receiving flow meter r in quarter p at standard conditions (standard cubic meters). Sr,p = Quarterly volumetric flow through a receiving flow meter r that is redelivered to another facility without being injected into your well in quarter p (standard cubic meters). D = Density of CO2 at standard conditions (metric tons per standard cubic meter): 0.0018682. CCO2,p,r = Quarterly CO2 concentration measurement in flow for flow meter r in quarter p (vol. percent CO2, expressed as a decimal fraction). p = Quarter of the year. r = Receiving flow meter.
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