StacksVerified U.S. regulatory reference

40 CFR Part 63, Table 2

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov

For * * * |

1. Coater-only production linesa. Limit PAH emissions to 0.0002 lb/ton of asphalt roofing product manufactured; or
b. Limit PM emissions to 0.06 lb/ton of asphalt roofing product manufactured.
2. Saturator-only production linesa. Limit PAH emissions to 0.0007 lb/ton of asphalt roofing product manufactured; or
b. Limit PM emissions to 0.30 lb/ton of asphalt roofing product manufactured.
3. Combined saturator/coater production linesa. Limit PAH emissions to 0.0009 lb/ton of asphalt roofing product manufactured; or
b. Limit PM emissions to 0.36 lb/ton of asphalt roofing product manufactured.