Cmc Steel Sc – Emissions Trend

Cayce, SC · 2019–2023 · Parent: Commercial Metals Co

This page assembles 5 consecutive years of EPA Toxics Release Inventory Form R filings for Cmc Steel Sc, spanning 2019–2023. Each annual total aggregates on-site air emissions, surface-water discharges, land disposal, and off-site transfers reported by the facility under EPCRA Section 313, which requires disclosure whenever a listed chemical is manufactured, processed, or otherwise used above threshold quantities.

Reported releases opened at 72.1K in 2019 and closed at 142.9K in 2023 – a increase of 98.3% over the window. The chart below stacks the four TRI release media (air, water, land, off-site) and overlays the yearly total. The top contributor by cumulative mass is Zinc compounds at 301.8K, followed by Manganese And Manganese Compounds at 92.5K.

Because TRI figures are estimated, not metered, year-over-year deltas can reflect methodology revisions, ownership changes, or shifts in what a facility classifies as reportable, not only physical emission changes. Treat the trajectory as a disclosure record, and cross-reference with the EPA Enforcement and Compliance History Online (ECHO) system for the fuller regulatory picture on this primary metals facility.

Overall Trend
↑ Increasing (+98.3%)
2019 Total
72.1K lbs
2023 Total
142.9K lbs

Total Releases by Category

Air
Water
Land
Offsite Transfer
028.6K57.2K85.7K114.3K142.9K 20192020202120222023 Pounds Released

Year-over-Year Comparison

Year Total Chemicals YoY Change
2019 72.1K lbs 8 -
2020 114.2K lbs 8 +58.5%
2021 93.3K lbs 8 -18.3%
2022 86.1K lbs 8 -7.8%
2023 142.9K lbs 8 +66.0%

Top Chemicals by Year

Chemical 20192020202120222023 Total
Zinc compounds 54.0K 95.5K 76.5K 28.2K 47.7K 301.8K
Manganese And Manganese Compounds - 10.5K 9.5K 25.3K 47.3K 92.5K
Lead And Lead Compounds - 4.5K - 24.5K 33.0K 62.0K
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) 416 1.7K 1.7K 4.0K 7.5K 15.4K
Copper And Copper Compounds 1.3K 1.6K 1.2K 3.7K 6.9K 14.7K
Manganese compounds 11.6K - - - - 11.6K
Lead compounds 4.3K - 3.9K - - 8.3K
Mercury And Mercury Compounds - 227 221 246 256 950
Nickel And Nickel Compounds - 173 - 137 252 561
Nickel compounds 178 - 199 - - 377
Mercury compounds 243 - - - - 243
Dioxin and dioxin-like compounds 1 1 1 1 1 4

About This Data

Trend data is sourced from the EPA Toxic Release Inventory (TRI). Facilities report annually. Release quantities are self-reported estimates. Year-over-year changes may reflect changes in production, pollution control measures, reporting methodology, or chemical thresholds.

A decrease in reported releases does not necessarily indicate improved environmental performance, as it may reflect production cutbacks, facility closures, or changes in reporting requirements. Similarly, increases may reflect expanded production rather than degraded environmental practices.

Frequently Asked Questions

Is Cmc Steel Sc getting cleaner or dirtier?
Based on EPA TRI data from 2019–2023, Cmc Steel Sc's total toxic releases have increased by approximately 98%.
What time period does this trend data cover?
This page shows 5 years of EPA Toxic Release Inventory data from 2019–2023. Release quantities are self-reported estimates filed annually by the facility.