Where:
Edic = Mass flow rate for the daily instrument check, grams per hour
xi= Mass fraction of detectable chemical(s) i seen by the optical gas imaging instrument, within the distance to be used in paragraph (g)(2)(iv)(B) of this section, at or below the standard detection sensitivity level, Esds.
Esds = Standard detection sensitivity level from Table 3 to subpart A, grams per hour
k = Total number of detectable chemicals emitted from the leaking equipment and seen by the optical gas imaging instrument.
40 C.F.R. §65.7