40 CFR Part 53, Table C-3 — Test Specifications for Pb in TSP and Pb in PM 10 Methods
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
| Concentration range equivalent to percentage of NAAQS in µg/m3 | 30% to 250% |
|---|---|
| Minimum number of 24-hr measurements | 5 |
| Maximum reference method analytical bias, Dq | ±5% |
| Maximum precision, PR or PC | ≤15% |
| Maximum difference (D) | ±20% |
| Estimated Method Detection Limit (MDL), µg/m3 | 5% of NAAQS level. |
[73 FR 67059, Nov. 12, 2008]