- Table 2 to Subpart OOOOb of Part 60—Alternative Technology Periodic Screening Frequency at Well Sites and Centralized Production Facilities Subject to AVO Inspections and/or Semiannual OGI or EPA Method 21 Monitoring

Minimum screening frequency Minimum detection threshold of screening technology *
(kg/hr)
Semiannual≤1 Triannual≤2 Triannual + Annual OGI≤10 Quarterly≤5 Quarterly + Annual OGI≤15 Bimonthly≤15

* Based on a probability of detection of 90%