Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SHELL NORCO CHEMICAL PLANT WEST SITE
16122 RIVER RD, NORCO, LA, 70079
Parent company: SHELL OIL CO
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 | sec-Butyl alcohol | Methyl ethyl ketone | Propylene | Chlorine | Allyl chloride | Total (lbs) |
| 2024 | — | — | — | — | — | 18,569 |
| 2023 | — | — | — | — | — | 17,391 |
| 2022 | — | — | — | — | — | 21,171 |
| 2021 | — | — | — | — | — | 16,118 |
| 2020 | — | — | — | — | — | 21,139 |
| 2019 | — | — | — | — | — | 20,019 |
| 2018 | — | — | — | — | — | 39,055 |
| 2017 | — | — | — | — | — | 45,877 |
| 2016 | — | — | — | — | — | 68,343 |
| 2015 | — | — | — | — | — | 82,548 |
| 2014 | — | — | — | — | — | 82,855 |
| 2013 | — | — | — | — | — | 85,027 |
| 2012 | — | — | — | — | — | 83,499 |
| 2011 | — | — | — | — | — | 64,121 |
| 2010 | — | — | — | — | — | 36,090 |
| 2009 | 15,059 | — | — | — | — | 55,066 |
| 2008 | 14,975 | — | — | — | — | 60,820 |
| 2007 | 19,827 | — | — | — | — | 106,503 |
| 2006 | 6,389 | — | — | — | — | 81,333 |
| 2005 | 685 | — | — | — | — | 94,945 |
| 2004 | 88,836 | — | 693 | — | — | 212,368 |
| 2003 | 108,000 | 78,800 | 2,400 | — | 2 | 281,878 |
| 2002 | 157,000 | 107,300 | — | — | — | 368,665 |
| 2001 | 116,100 | 111,000 | — | — | 2 | 284,567 |
| 2000 | 48,700 | 71,000 | — | — | — | 133,108 |
| 1999 | 63,210 | 82,150 | 24,400 | 9,500 | 21,100 | 309,191 |
| 1998 | 130,002 | 57,522 | 161,500 | 22,100 | 48,002 | 527,349 |
| 1997 | 115,000 | 101,013 | 192,600 | 118,000 | 54,000 | 719,574 |
| 1996 | 103,480 | 118,031 | 192,100 | 127,000 | 55,800 | 708,633 |
| 1995 | 125,800 | 86,010 | 112,700 | 117,000 | 20,741 | 538,828 |
| 1994 | 76,000 | 144,001 | 98,200 | 137,000 | 157,002 | 721,329 |
| 1993 | 81,004 | 68,130 | 56,100 | 138,900 | 59,002 | 601,825 |
| 1992 | 97,013 | 79,020 | 73,000 | 140,000 | 73,000 | 667,843 |
| 1991 | 87,000 | 85,370 | 74,000 | 166,000 | 58,000 | 678,890 |
| 1990 | 111,000 | 77,000 | 166,000 | 70,000 | 91,000 | 724,343 |
▎ 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.