Continental Cement Co LLC – Emissions Trend

Hannibal, MO · 2019–2023 · Parent: Summit Materials LLC

This page assembles 5 consecutive years of EPA Toxics Release Inventory Form R filings for Continental Cement Co LLC, 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 109.4K in 2019 and closed at 95.1K in 2023 – a decrease of 13.0% 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 Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) at 316.6K, followed by Zinc compounds at 26.6K.

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 nonmetallic mineral product facility.

Overall Trend
↓ Decreasing (-13.0%)
2019 Total
109.4K lbs
2023 Total
95.1K lbs

Total Releases by Category

Air
Water
Land
Offsite Transfer
021.9K43.7K65.6K87.5K109.4K 20192020202120222023 Pounds Released

Year-over-Year Comparison

Year Total Chemicals YoY Change
2019 109.4K lbs 40 -
2020 76.4K lbs 33 -30.1%
2021 67.2K lbs 34 -12.1%
2022 85.0K lbs 32 +26.6%
2023 95.1K lbs 35 +11.9%

Top Chemicals by Year

Chemical 20192020202120222023 Total
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 58.4K 59.0K 52.5K 69.0K 77.7K 316.6K
Zinc compounds 12.0K 4.5K 2.6K 3.3K 4.1K 26.6K
Manganese And Manganese Compounds 12.0K - 4.8K 5.3K - 22.1K
Zinc (fume or dust) 12.0K 4.5K - - - 16.6K
Barium And Barium Compounds 3.1K 2.0K 1.8K 1.9K 2.0K 10.8K
Lead And Lead Compounds 2.3K 1.8K 2.0K 1.1K 1.6K 8.7K
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) 3.0K 1.8K 659 734 809 7.0K
Copper And Copper Compounds 1.4K 976 1.1K 1.3K 1.2K 6.1K
Manganese compounds - - - - 5.0K 5.0K
Toluene 299 573 499 559 602 2.5K
Xylene (mixed isomers) 512 378 216 454 745 2.3K
Vanadium compounds 1.6K - - - - 1.6K
Vanadium (except when contained in an alloy) 1.6K - - - - 1.6K
Nickel And Nickel Compounds - - 302 329 290 921
Ethylbenzene 76 95 75 132 208 586

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 Continental Cement Co LLC getting cleaner or dirtier?
Based on EPA TRI data from 2019–2023, Continental Cement Co LLC's total toxic releases have decreased by approximately 13%.
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.