Acetylene Tier II reporting threshold
Yes — once you hold 10,000 pounds or more of Acetylene at any one time during the year.
The number that counts is the most you had on site at one time, not the total you bought over the year, and not what is there today.
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- Extremely hazardous substance?
- No — the ordinary 10,000 pound limit applies.
- CAS number
- 74-86-2
- Other laws that set their own number
- Clean Air Act risk management: 10,000 pounds. We are not telling you that you owe it — it has a second condition on top of the amount, and most small sites fall outside it: the rule leaves out anything used as a fuel or held for sale as a fuel at a retail site.40 CFR 68.130 · 68.126
40 CFR 370.10 — 10,000 pounds · 40 CFR 370.45(a) — filed on or before 1 March each year
Your state may set a lower limit
7 of the states we have read set the threshold itself below the federal one: OR, CA, VT, LA, AK, DE, OH.
5 more are strict in a different way — NC, MO, NV, NJ, RI keep the federal numbers but add a separate filing or cover more chemicals. Those are not the same thing, and we do not call them the same thing.
Where we have not read a state’s own code, we say so rather than guess.
Every rule we apply, with its sourceFind out for your site
Acetylene is one chemical. The filing counts everything you keep, added up across every place you keep it. The checker works that out and shows the rule behind each number.
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