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§ 86.516-90 Calibrations, frequency and overview.
(a) Calibrations shall be performed as specified in §§ 86.517 through 86.526.
(b) [Reserved]
(c) At least monthly or after any maintenance which could alter calibration, the following calibrations and checks shall be performed:
(1) Calibrate the hydrocarbon analyzer, methane analyzer, carbon dioxide analyzer, carbon monoxide analyzer, and oxides of nitrogen analyzer (certain analyzers may require more frequent calibration depending on particular equipment and uses).