Missing data procedures for CO 2 ..

(a) The owner or operator of a unit with a CO 2 continuous emission monitoring system for determining CO 2 mass emissions in accordance with § 75.10 (or an O 2 monitor that is used to determine CO 2 concentration in accordance with appendix F to this part) shall substitute for missing CO 2 pollutant concentration data using the procedures of paragraphs (b) and (d) of this section. (b) During the first 720 quality-assured monitor operating hours following initial certification at a particular unit or stack location ( i.e. , the date and time at which quality-assured data begins to be recorded by a CEMS at that location), or (when implementing these procedures for a previously certified CO 2 monitoring system) during the 720 quality-assured monitor operating hours preceding implementation of the standard missing data procedures in paragraph (d) of this section, the owner or operator shall provide substitute CO 2 pollutant concentration data or substitute CO 2 data for heat input determination, as applicable, according to the procedures in § 75.31(b). (c) [Reserved] (d) Upon completion of 720 quality-assured monitor operating hours using the initial missing data procedures of § 75.31(b), the owner or operator shall provide substitute data for CO 2 concentration or substitute CO 2 data for heat input determination, as applicable, in accordance with the procedures in § 75.33(b) except that the term “CO 2 concentration” shall apply rather than “SO 2 concentration,” the term “CO 2 pollutant concentration monitor” or “CO 2 diluent monitor” shall apply rather than “SO 2 pollutant concentration monitor,” and the term “maximum potential CO 2 concentration, as defined in section 2.1.3.1 of appendix A to this part” shall apply, rather than “maximum potential SO 2 concentration.” [67 FR 40439, June 12, 2002]