# Steel Pickling - HCL Process — EPA NESHAP Source Category Applicability Crosswalk For Steel Pickling - HCL Process, cfr subpart is 40 CFR 63 Subpart CCC; source type is major sources; epa category url is https://www.epa.gov/stationary-sources-air-pollution/steel-pickling-hcl-process-facilities-and-hydrochloric-acid, recorded from its source on 2026-08-15. - **source category:** Steel Pickling - HCL Process _(verified: appears in the quote below)_ - **cfr subpart:** 40 CFR 63 Subpart CCC _(verified: appears in the quote below)_ - **source type:** major sources _(our reading, not quoted from the source)_ - **epa category url:** https://www.epa.gov/stationary-sources-air-pollution/steel-pickling-hcl-process-facilities-and-hydrochloric-acid _(our reading, not quoted from the source)_ ## What the source says > Steel Pickling - HCL Process | 40 CFR 63 Subpart CCC ## Source - https://www.epa.gov/stationary-sources-air-pollution/national-emission-standards-hazardous-air-pollutants-neshap-8 Last verified: 2026-08-15. Review by: 2026-12-13. Part of [EPA NESHAP Source Category Applicability Crosswalk](https://referencesource.org/neshap-source-category-crosswalk/).