Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SEMCO ENTERPRISES INC
475 S WILSON WAY, CITY OF INDUSTRY, CA, 91744
Parent company: NA
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 | Zinc (fume or dust) | Copper | Zinc compounds | Lead | Total (lbs) | |
| 2024 | — | 16 | 156 | 0 | 172 | |
| 2023 | — | 17 | 149 | 0 | 166 | |
| 2022 | — | 24 | 174 | 0 | 198 | |
| 2021 | — | 27 | 477 | — | 503 | |
| 2020 | — | 18 | 258 | — | 276 | |
| 2019 | — | 31 | 493 | 0 | 525 | |
| 2018 | — | 250 | 250 | — | 500 | |
| 2017 | — | 159 | — | 1 | 160 | |
| 2016 | — | 168 | — | — | 168 | |
| 2012 | — | 231 | — | — | 231 | |
| 2011 | 2,211 | — | — | 0 | 2,211 | |
| 2010 | 1,197 | — | — | 0 | 1,197 | |
| 2009 | 1,016 | — | — | 0 | 1,016 | |
| 2008 | — | — | — | 0 | 0 | |
| 2007 | 1,442 | — | — | 0 | 1,442 | |
| 2006 | 1,919 | — | — | 0 | 1,919 | |
| 2005 | 2,853 | — | — | 0 | 2,853 | |
| 2004 | 2,191 | — | — | 0 | 2,191 | |
| 2003 | 2,185 | — | — | 0 | 2,185 | |
| 2002 | 114 | 336 | — | — | 450 | |
| 2001 | — | 368 | — | — | 368 | |
| 2000 | 2,419 | 390 | — | — | 2,809 | |
| 1999 | 2,581 | 391 | — | — | 2,972 | |
| 1998 | 5,109 | 338 | — | — | 5,447 | |
| 1997 | 5,193 | 277 | — | — | 5,470 | |
| 1996 | 4,591 | 211 | — | — | 4,802 | |
| 1995 | 6,144 | 107 | — | — | 6,251 | |
| 1994 | 10,387 | 159 | — | — | 10,546 | |
| 1993 | 10,571 | 109 | — | — | 10,680 | |
| 1992 | 6,715 | 72 | — | — | 6,787 | |
| 1991 | 7,255 | 38 | — | — | 7,293 | |
| 1990 | 8,519 | 250 | — | — | 8,769 | |
| 1989 | 8,662 | 250 | — | — | 8,912 | |
| 1988 | 8,902 | 250 | — | — | 9,152 | |
| 1987 | — | 250 | — | — | 250 | |
▎ 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.