| (II) annually, if following the first semiannual RATA, the relative accuracy during the previous audit for each compound monitored by PEMS is less than or equal to 7.5% (or within ± 2.0 ppmv) of the mean value of the reference method test data at normal load operation; or alternatively: (-a-) for diluent, is no greater than 1.0% O 2 or CO2, for diluent measured by reference method at less than 5% by volume; or (-b-) for CO, is no greater than 5.0 ppmv. (5) The owner or operator shall, for each alternative fuel fired in a unit, certify the PEMS in accordance with paragraph (4)(A) of this subsection unless the alternative fuel effects on NO X , CO, and O2 (or CO 2) emissions were addressed in the model training process. (6) The PEMS is subject to the approval of the executive director. (c) Monitoring system certification reports. Reports of any RATA performed in accordance with this section must comply with §117.8010 of this title (relating to Compliance Stack Test Reports). |
