Regulations last checked for updates: May 17, 2024

Title 30 - Mineral Resources last revised: May 15, 2024
Appendix - Table 70-1 to Subpart C of Part 70—Excessive Concentration Values (ECV) Based on Single, Full-Shift CMDPSU/CPDM Concentration Measurements
Link to an amendment published at 89 FR 28476, Apr. 18, 2024.
Applicable standard
(mg/m 3)
ECV (mg/m 3)
CMDPSU CPDM
2.02.332.26
1.92.222.15
1.82.122.04
1.72.011.92
1.61.901.81
1.51.791.70
1.41.691.58
1.31.591.47
1.21.471.36
1.11.371.25
1.01.261.13
0.91.161.02
0.81.050.91
0.70.950.79
0.60.850.68
0.50.740.57
0.40.650.46
0.30.540.34
0.20.440.23
authority: 30 U.S.C. 811,813,957
source: 59 FR 8327, Feb 18, 1994, unless otherwise noted.