Link to an amendment published at 91 FR 9117, Feb. 24, 2026.
As stated in § 63.10007, you must comply with the following requirements for establishing operating limits:
If you have an
applicable
emission limit
for . . .
| And you choose
to establish PM
CPMS operating
limits, you must . . .
| And . . .
| Using . . .
| According to the
following
procedures . . .
|
|---|
| Filterable Particulate matter (PM), total non-mercury HAP metals, individual non-mercury HAP metals, total HAP metals, or individual HAP metals for an EGU | Install, certify, maintain, and operate a PM CPMS for monitoring emissions discharged to the atmosphere according to § 63.10010(h)(1) | Establish a site-specific operating limit in units of PM CPMS output signal (e.g., milliamps, mg/acm, or other raw signal) | Data from the PM CPMS and the PM or HAP metals performance tests | 1. Collect PM CPMS output data during the entire period of the performance tests.
2. Record the average hourly PM CPMS output for each test run in the performance test.
3. Determine the PM CPMS operating limit in accordance with the requirements of § 63.10023(b)(2) from data obtained during the performance test demonstrating compliance with the filterable PM or HAP metals emissions limitations. |