Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
1840 N FEDERAL AVE, MASON CITY, IA, 504017400
Parent company: HOLCIM (US) INC
Reported on-site TRI releases in pounds, grouped by reporting year.
The 10 chemicals with the highest cumulative on-site releases across all available years.
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| Year | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Ammonia | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Lead compounds | Mercury compounds | Total |
|---|---|---|---|---|---|---|
| 2009 | 37,357 | — | — | 9 | — | 37,390 |
| 2008 | 95,090 | 47,170 | — | 34 | — | 142,391 |
| 2007 | 112,978 | 48,527 | — | 124 | — | 161,736 |
| 2006 | 115,893 | 73,036 | — | 54 | 96 | 189,418 |
| 2005 | 171,855 | 58,219 | 115 | 330 | 74 | 230,749 |
| 2004 | 145,707 | 86,720 | 39 | 361 | 76 | 232,959 |
| 2003 | 206,139 | 82,189 | 58 | 751 | 67 | 289,242 |
| 2002 | 103,066 | 40,244 | 12 | 88 | 25 | 143,438 |
| 2001 | 25,855 | — | 54 | 408 | 54 | 26,386 |
| 2000 | — | — | — | — | 57 | 57 |
| 1996 | 11 | — | — | — | — | 24 |
| 1995 | 250 | — | — | — | — | 250 |
| 1994 | 250 | — | — | — | — | 250 |
| 1993 | 250 | — | — | — | — | 250 |
| 1992 | 250 | — | — | — | — | 250 |
| 1991 | 250 | — | — | — | — | 250 |
| 1990 | 250 | — | — | — | — | 250 |
| 1989 | 250 | — | — | — | — | 250 |
| 1988 | — | — | 14,400 | — | — | 14,400 |