Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
WESTLAKE ROYAL STONE LLC - NAPA
350 TOWER RD, AMERICAN CANYON, CA, 94503
Parent company: WESTLAKE CORP
Carcinogen
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | n-Hexane | 1,1-Dichloro-1-fluoroethane (HCFC-141b) | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Lead | Total |
|---|---|---|---|---|---|---|
| 2023 | — | — | — | — | — | 0 |
| 2022 | — | — | — | — | — | 0 |
| 2021 | — | — | — | — | — | 0 |
| 2020 | — | — | — | — | — | 0 |
| 2019 | — | — | 8 | — | — | 8 |
| 2018 | — | — | 10 | 5 | 0 | 15 |
| 2017 | — | — | 11 | 5 | 0 | 16 |
| 2016 | — | — | 10 | 5 | 0 | 15 |
| 2015 | — | — | 8 | 5 | 0 | 13 |
| 2014 | — | — | 7 | 5 | 0 | 12 |
| 2013 | — | — | 7 | 5 | 0 | 12 |
| 2012 | — | — | — | 5 | 0 | 5 |
| 2011 | — | — | — | 5 | 0 | 5 |
| 2010 | — | — | 6 | — | — | 6 |
| 2009 | — | — | 7 | — | — | 7 |
| 2008 | — | — | 10 | — | — | 10 |
| 2007 | — | — | 12 | — | 0 | 12 |
| 2006 | 15,211 | — | 2,760 | — | 0 | 17,972 |
| 2005 | 13,157 | — | — | — | — | 13,157 |
| 2004 | 13,129 | — | 5 | — | — | 13,134 |
| 2003 | 12,338 | — | 1 | — | — | 12,339 |
| 2002 | — | — | 2 | — | — | 2 |
| 2001 | — | — | 1 | — | — | 1 |
| 2000 | — | — | 2 | — | — | 2 |
| 1999 | — | — | 2 | — | — | 2 |
| 1998 | — | 22,000 | — | — | — | 22,000 |