40 CFR Part 60, Table 1A
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Pollutant | Units (7 percent oxygen, dry basis) | Emissions limits | Averaging time 1 | Methodfordemonstratingcompliance 2
HMIWI size
| Small | Medium | Large |
|---|---|---|
| Particulate matter | Milligrams per dry standard cubic meter (grains per dry standard cubic foot) | 69 (0.03) | 34 (0.015) | 34 (0.015) | 3-run average (1-hour minimum sample time per run) | EPA Reference Method 5 of appendix A-3 of part 60, or EPA Reference Method M 26A or 29 of appendix A-8 of part 60. |
| Carbon monoxide | Parts per million by volume | 40 | 40 | 40 | 3-run average (1-hour minimum sample time per run) | EPA Reference Method 10 or 10B of appendix A-4 of part 60. |
| Dioxins/furans | Nanograms per dry standard cubic meter total dioxins/furans (grains per billion dry standard cubic feet) or nanograms per dry standard cubic meter TEQ (grains per billion dry standard cubic feet) | 125 (55) or 2.3 (1.0) | 25 (11) or 0.6 (0.26) | 25 (11) or 0.6 (0.26) | 3-run average (4-hour minimum sample time per run) | EPA Reference Method 23 of appendix A-7 of part 60. |
| Hydrogen chloride | Parts per million by volume or percent reduction | 15 or 99% | 15 or 99% | 15 or 99% | 3-run average (1-hour minimum sample time per run) | EPA Reference Method 26 or 26A of appendix A-8 of part 60. |
| Sulfur dioxide | Parts per million by volume | 55 | 55 | 55 | 3-run average (1-hour minimum sample time per run) | EPA Reference Method 6 or 6C of appendix A-4 of part 60. |
| Nitrogen oxides | Parts per million by volume | 250 | 250 | 250 | 3-run average (1-hour minimum sample time per run) | EPA Reference Method 7 or 7E of appendix A-4 of part 60. |
| Lead | Milligrams per dry standard cubic meter (grains per thousand dry standard cubic feet) or percent reduction | 1.2 (0.52) or 70% | 0.07 (0.03) or 98% | 0.07 (0.03) or 98% | 3-run average (1-hour minimum sample time per run) | EPA Reference Method 29 of appendix A-8 of part 60. |
| Cadmium | Milligrams per dry standard cubic meter (grains per thousand dry standard cubic feet) or percent reduction | 0.16 (0.07) or 65% | 0.04 (0.02) or 90% | 0.04 (0.02) or 90% | 3-run average (1-hour minimum sample time per run) | EPA Reference Method 29 of appendix A-8 of part 60. |
| Mercury | Milligrams per dry standard cubic meter (grains per thousand dry standard cubic feet) or percent reduction | 0.55 (0.24) or 85% | 0.55 (0.24) or 85% | 0.55 (0.24) or 85% | 3-run average (1-hour minimum sample time per run) | EPA Reference Method 29 of appendix A-8 of part 60. |
1 Except as allowed under § 60.56c(c) for HMIWI equipped with CEMS.
2 Does not include CEMS and approved alternative non-EPA test methods allowed under § 60.56c(b).
[74 FR 51414, Oct. 6, 2009, as amended at 76 FR 18414, Apr. 4, 2011]