Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
CONTINENTAL CEMENT CO
301 E FRONT ST, BUFFALO, IA, 52728
Parent company: SUMMIT MATERIALS LLC
Carcinogen
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Manganese | Manganese compounds | Zinc compounds | Ammonia | Total (lbs) |
| 2024 | 136,830 | — | 1,213 | 711 | 18,368 | 157,735 |
| 2023 | 144,753 | — | 648 | 583 | 19,416 | 165,880 |
| 2022 | 138,274 | — | 4,202 | 1,506 | 18,477 | 164,130 |
| 2021 | 139,110 | — | 2,115 | 947 | 16,596 | 159,577 |
| 2020 | 138,624 | — | 1,574 | 815 | 16,972 | 158,595 |
| 2019 | 136,394 | — | — | — | 16,450 | 152,971 |
| 2018 | 144,000 | — | 1,239 | — | — | 145,318 |
| 2017 | 160,000 | — | 2,294 | 685 | — | 163,384 |
| 2016 | 160,000 | — | 2,189 | — | — | 164,696 |
| 2015 | 140,000 | — | — | — | — | 145,103 |
| 2014 | 160,000 | — | — | — | — | 163,809 |
| 2013 | 140,000 | — | — | — | — | 143,803 |
| 2012 | 150,000 | — | — | — | — | 151,840 |
| 2011 | 140,000 | — | — | — | — | 143,337 |
| 2010 | 110,000 | — | — | — | — | 112,831 |
| 2009 | 110,000 | — | — | — | — | 111,535 |
| 2008 | 120,000 | — | — | — | — | 121,136 |
| 2007 | 140,000 | — | — | — | — | 141,241 |
| 2006 | 130,000 | — | — | — | — | 130,677 |
| 2005 | 143,000 | — | — | — | — | 144,019 |
| 2004 | 143,000 | — | — | — | — | 144,447 |
| 2003 | 131,448 | — | — | — | — | 133,170 |
| 2002 | 150,000 | 1 | — | — | — | 155,911 |
| 2001 | 140,000 | — | — | — | — | 145,795 |
| 2000 | 88,000 | — | — | — | — | 93,462 |
| 1999 | 87,219 | — | — | 58,070 | — | 156,490 |
| 1998 | 35,732 | — | — | 82,095 | — | 133,781 |
| 1997 | 34,453 | — | 252,689 | — | — | 289,632 |
| 1996 | 31,000 | 252,650 | — | — | — | 286,205 |
| 1995 | 44,000 | 182,550 | — | — | — | 228,405 |
| 1994 | — | 112,750 | — | — | — | 113,975 |
| 1993 | — | 110,920 | — | — | — | 112,135 |
| 1992 | — | — | 144,289 | — | — | 145,810 |
| 1991 | — | — | 164,900 | — | — | 166,604 |
| 1990 | — | — | — | — | — | 1,610 |
| 1989 | — | — | — | — | — | 1,610 |
| 1988 | — | — | — | — | — | 1,610 |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.