Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SHELL CATALYSTS & TECHNOLOGIES - PITTSBURG
2840 WILLOW PASS RD, PITTSBURG, CA, 94565
Parent company: SHELL PETROLEUM INC
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 | Ammonia | Molybdenum trioxide | Asbestos (friable) | Aluminum oxide (fibrous forms) | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Total (lbs) |
| 2024 | 962 | 173 | — | — | 83 | 1,267 |
| 2023 | 888 | 174 | — | — | 100 | 1,210 |
| 2022 | 1,508 | 200 | — | — | 168 | 1,936 |
| 2021 | 2,461 | 122 | — | — | 83 | 2,698 |
| 2020 | 7,930 | 210 | — | — | 33 | 8,232 |
| 2019 | 8,594 | 322 | — | — | 159 | 9,183 |
| 2018 | 19,234 | 284 | — | — | 82 | 19,689 |
| 2017 | 9,051 | 302 | — | — | 151 | 9,588 |
| 2016 | 11,874 | 262 | — | — | 42 | 12,259 |
| 2015 | 24,451 | 350 | — | — | 19 | 24,944 |
| 2014 | 33,075 | 346 | — | — | 514 | 34,044 |
| 2013 | 34,621 | 350 | — | — | 34 | 35,118 |
| 2012 | 24,843 | 498 | — | — | 419 | 25,904 |
| 2011 | 15,494 | 676 | — | — | 249 | 16,590 |
| 2010 | 13,942 | 732 | — | — | 597 | 15,447 |
| 2009 | 16,976 | 718 | — | — | 136 | 18,017 |
| 2008 | 34,071 | 1,269 | — | — | 367 | 35,908 |
| 2007 | 27,676 | 600 | — | — | 28 | 28,478 |
| 2006 | 27,825 | 1,370 | — | — | — | 29,536 |
| 2005 | 22,279 | 1,208 | — | — | — | 23,791 |
| 2004 | 29,733 | 884 | — | — | — | 30,840 |
| 2003 | 27,054 | 700 | — | — | — | 27,907 |
| 2002 | 15,835 | 960 | — | — | — | 16,969 |
| 2001 | 19,539 | 758 | — | — | — | 20,443 |
| 2000 | 24,172 | 843 | — | — | 155 | 25,340 |
| 1999 | 36,021 | 761 | — | — | — | 36,961 |
| 1998 | 65,900 | 879 | — | — | — | 66,988 |
| 1997 | 62,700 | 968 | — | — | — | 63,892 |
| 1996 | 62,599 | 850 | 12,960 | — | — | 76,961 |
| 1995 | 53,050 | 255 | — | — | — | 53,455 |
| 1994 | 56,476 | 455 | — | — | — | 57,120 |
| 1993 | 108,456 | 505 | — | — | — | 110,751 |
| 1992 | 117,400 | 255 | — | — | — | 118,180 |
| 1991 | 185,393 | 255 | — | — | — | 186,173 |
| 1990 | 319,000 | 255 | — | — | — | 319,535 |
| 1989 | 430,360 | 500 | — | — | — | 432,610 |
| 1988 | 370,250 | 500 | — | 12,195 | — | 384,695 |
| 1987 | 1,000 | — | — | — | — | 1,000 |
▎ 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.