40 CFR Part 53, Subpart C, Table C-4 to Subpart C of Part 53 - Test Specifications for PM10, PM2.5 and PM10-2.5 Candidate Equivalent Methods

View PDF at GPO Pt. 53, Subpt. C, Table C-4
Table C-4 to Subpart C of Part 53—Test Specifications for PM10, PM2.5 and PM10-2.5 Candidate Equivalent Methods
Specification PM10 PM2.5 PM10-2.5
Class I Class II Class III Class II Class III
1 Some missing daily measurement values may be permitted; see test procedure.
2 Calculated as the root mean square over all measurement sets.
Acceptable concentration range (Rj), µg/m3 15-300 3-200 3-200 3-200 3-200 3-200
Minimum number of test sites 2 1 2 4 2 4
Minimum number of candidate method samplers or analyzers per site 3 3 3 1 3 1 3 1 3 1
Number of reference method samplers per site 3 3 3 1 3 1 3 1 3 1
Minimum number of acceptable sample sets per site for PM10 methods:
Rj < 60 µg/m3 3
Rj > 60 µg/m3 3
Total 10
Minimum number of acceptable sample sets per site for PM2.5 and PM10-2.5 candidate equivalent methods:
Rj < 30 µg/m3 for 24-hr or Rj < 20 µg/m3 for 48-hr samples 3
Rj > 30 µg/m3 for 24-hr or Rj > 20 µg/m3 for 48-hr samples 3
Each season 10 23 23 23 23
Total, each site 10 23 23 (46 for two-season sites) 23 23 (46 for two-season sites)
Precision of replicate reference method measurements, PRj or RPRj, respectively; RP for Class II or III PM2.5 or PM10-2.5, maximum 5 µg/m3 or 7% 2 µg/m3 or 5% 10% 2 10% 2 10% 2 10% 2
Precision of PM2.5 or PM10-2.5 candidate method, CP, each site 10% 2 15% 2 15% 2 15% 2
Slope of regression relationship 1 ±0.10 1 ±0.05 1 ±0.10 1 ±0.10 1 ±0.10 1 ±0.12
Intercept of regression relationship, µg/m3 0 ±5 0 ±1 Between: 13.55 − (15.05 × slope), but not less than −1.5; and 16.56 − (15.05 × slope), but not more than 1.5 Between: 15.05 − (17.32 × slope), but not less than −2.0; and 15.05 − (13.20 × slope), but not more than 2.0 Between: 62.05 − (70.5 × slope), but not less than −3.5; and 78.95 − (70.5 × slope), but not more than 3.5 Between: 70.50 − (82.93 × slope), but not less than −7.0; and 70.50 − (61.16 × slope), but not more than 7.0
Correlation of reference method and candidate method measurements ≥ 0.97 ≥ 0.97 ≥ 0.93—for CCV ≤ 0.4; ≥ 0.85 0.2 × CCV—for 0.4 ≤ CCV ≤ 0.5; ≥ 0.95—for CCV ≥ 0.5
[72 FR 32203, June 12, 2007]

Title 40 published on 2013-07-01

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United States Code
U.S. Code: Title 42 - THE PUBLIC HEALTH AND WELFARE
Statutes at Large
Public Laws

91-604