Mineral spirits Tier II reporting threshold
Yes — once you hold 10,000 pounds or more of mineral spirits at any one time during the year. That is roughly 1,563 gallons.
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.
- Why this one counts
- The usual parts-washer and paint-thinning solvent. Not on the EPA list, but it needs a safety data sheet.
- Weight to volume
- 6.4 pounds per gallon. mineral spirits — specific gravity 0.77⚠️ A representative figure — section 9 of your own safety data sheet beats it.
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
mineral spirits 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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