40 CFR Appendix Table 1 to Subpart A of Part 63 - Detection Sensitivity Levels (grams per hour)

Table 1 to Subpart A of Part 63 - Detection Sensitivity Levels (grams per hour)
Monitoring frequency per subpart a Detection sensitivity level
Bi-Monthly 60
Semi-Quarterly 85
Monthly 100

a When this alternative work practice is used to identify leaking equipment, the owner or operator must choose one of the monitoring frequencies listed in this table, in lieu of the monitoring frequency specified in the applicable subpart. Bi-monthly means every other month. Semi-quarterly means twice per quarter. Monthly means once per month.

[73 FR 78213, Dec. 22, 2008]