Louisiana
For Louisiana, general hazardous chemical threshold is 500 pounds or more on any single day; ehs threshold is 500 pounds or more or the listed threshold quantity if lower than 500 pounds; filing deadline is March 1; citation is LAC 33:V.10109 (Louisiana Right-to-Know, R.S. 30:2361 et seq.), recorded from its source on 2026-09-22.
- State
- Louisiana verified
- General hazardous chemical threshold
- 500 pounds or more on any single day verified
- EHS threshold
- 500 pounds or more or the listed threshold quantity if lower than 500 pounds verified
- Filing deadline
- March 1 verified
- Citation
- LAC 33:V.10109 (Louisiana Right-to-Know, R.S. 30:2361 et seq.) our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
C. The materials regulated by Subsection B above of these rules are also regulated under the inventory reporting provision of Section 312 of Title III of the Superfund Amendments and Reauthorization Act. Incorporated in the federal reporting provisions was an initial temporary threshold for reporting quantities of these materials such that for 1987, 1988 and 1989 inventory quantities which met or exceeded 10,000 pounds were reportable. In 1990, EPA published its final threshold regulations setting the final threshold (inventory) quantity for 1990 and beyond at 10,000 pounds. In this area, the Louisiana law and federal law differ. The state requires reporting of all regulated materials at the 500-pound level unless the threshold quantity for an extremely hazardous substance is lower.
— lsp.org, retrieved 2026-09-22
Where each value comes from
This source states these in separate places, so each value is shown with the passage that states it.
General hazardous chemical threshold
B. Any material for which a facility must prepare or maintain a Material Safety Data Sheet (MSDS) under the Occupational Safety and Health Administration (OSHA) Hazard Communication Standard (as listed in 29 CFR 1910.1200 et seq.) must be reported, for the prior calendar year beginning January 1 and ending December 31, on an inventory form annually beginning March 1, 1988, if the material is present at a facility in threshold (inventory) quantities (TQ) of 500 pounds or more on any single day.
EHS threshold
A. All substances listed on the list of “Extremely Hazardous Substances” as found in 40 CFR, Part 355, Appendix A, now in effect or amended hereafter, must be reported for the prior calendar year beginning January 1 and ending December 31, on an inventory form by March 1, 1988, and annually thereafter, if the material is present on site on any single day in amounts of 500 pounds or more or the listed threshold quantity if lower than 500 pounds.
Filing deadline
A. All substances listed on the list of “Extremely Hazardous Substances” as found in 40 CFR, Part 355, Appendix A, now in effect or amended hereafter, must be reported for the prior calendar year beginning January 1 and ending December 31, on an inventory form by March 1, 1988, and annually thereafter
— all from lsp.org, retrieved 2026-09-22
Source
- lsp.orghttps://lsp.org/media/z1blrmry/rtk_title_33_part_v_ch_101.pdf