Every rule we apply, and where it came from.

• 370.10(a)(1)An extremely hazardous substance is reportable at 500 pounds, or at its threshold planning quantity if that is lowerrule

  EPA, Instructions for the Tier II Form, May 2026, "Reporting Thresholds"

• 370.10(a)(2)Any other chemical that needs a safety data sheet is reportable at 10,000 poundsrule

  EPA, Instructions for the Tier II Form, May 2026, "Reporting Thresholds"

• 370.10(a)(3)Gasoline at a retail filling station, all grades added together, is reportable at 75,000 gallons — but only if it is all kept underground in tanks that stayed compliant with 40 CFR 280 all yearrule

  EPA, Instructions for the Tier II Form, May 2026, "Reporting Thresholds"

• 370.10(a)(4)Diesel at a retail filling station, all grades added together, is reportable at 100,000 gallons, on the same conditionsrule

  EPA, Instructions for the Tier II Form, May 2026, "Reporting Thresholds"

• 311(e)Left out: food, drugs and cosmetics regulated by the FDA; a solid in a manufactured article that gives off nothing in normal use; anything kept for personal or household use, or sold in the same form and strength to the public; substances used in a research laboratory or a medical facility; and fertiliser held for ordinary agricultural use or retail salerule

  EPCRA §311(e)

• stateA state may set lower thresholds of its own, or cover chemicals the federal list does notrule

  EPA, Instructions for the Tier II Form, May 2026: "Your state may have lower reporting thresholds and additional chemicals covered by state right-to-know regulations"

• Oregonrule

  liquid 500 gal · solid 500 lb · gas 500 ft3

  • Highly toxic material or explosive, liquid — 5 gal
  • Highly toxic material or explosive, solid — 10 lb
  • Highly toxic material or explosive, gas — 20 ft3
  • Radioactive substance or waste — any quantity

  OAR 837-085-0070, Hazardous Substance Report — Reportable Quantities (Oregon administrative rule) · OAR 837-085-0070 (Oregon administrative rule, current text)

• Californiarule

  liquid 55 gal · solid 500 lb · gas 200 ft3

  • Irritant or sensitizer, solid — 5,000 lb
  • Irritant or sensitizer, liquid — 550 gal
  • Cryogenic, refrigerated or compressed gas — 1,000 ft3
  • Pyrophoric or water-reactive combustible metal (raw stock, scrap or powder) — any quantity
  • Combustible dust or flammable solid — 100 lb

  California Health & Safety Code §25507 (Hazardous Materials Business Plan; §25506(c) ties it to Tier II) · last amended effective 2025-01-01 (SB 1143); previously AB 2059 effective 2023-01-01

• Vermontrule

  liquid 100 lb · solid 100 lb · gas 100 lb

  • Vermont keeps petroleum products and fuels at 10,000 pounds rather than 100 — 10,000 lb
  • Vermont takes a known human carcinogen in any amount — any quantity
  • Vermont takes explosives needing a state licence in any amount — any quantity

  Code Vt. R. 28-000-002, “Vermont Table I” (EPCRA / Community Right-to-Know program rule) · effective 1991-10-14, amended 1994-12-30 and 1995-10-09

• Louisianarule

  liquid 500 lb · solid 500 lb · gas 500 lb

  LAC 33:V.10109 (Inventory Reporting), Louisiana Hazardous Material Information Development, Preparedness, and Response Act (R.S. 30:2361–2380) · promulgated May 1986; amended 1987, 1988, 1990 and June 2001

Named as strict, but not a lower threshold

• North CarolinaA second filing, not a lower thresholdnot confirmed

  North Carolina Right to Know Act (G.S. 95-173 et seq.) — a separate inventory filed with the fire department at 55 gallons / 500 pounds

• NevadaA second filing, not a lower thresholdnot confirmed

  Nevada permits hazardous materials by fire-code hazard class (NAC 477.323(4) adopting the International Fire Code), separately from the Tier II inventory

• New JerseySame numbers, a much longer list of substancesnot confirmed

  N.J.A.C. 7:1G — New Jersey’s own Environmental Hazardous Substance list (about 1,129 CAS numbers) at 500 pounds, against roughly 355 on the federal list

• New YorkThe state follows the federal rule; a city may notnot confirmed

  New York State itself uses the federal thresholds; New York City’s Community Right-to-Know rule is the strict one (about 10 pounds for most substances)

• AlaskaThe state follows the federal rule; a city may notnot confirmed

  AS 29.35.500 lets a municipality run its own reporting programme — the stricter rules (any quantity of Poison Gas 2.3 or Poisons 6.1) apply only where a municipality has adopted one

• DelawareThe law often cited is a different programmenot confirmed

  Delaware’s Extremely Hazardous Substances Risk Management Act (7 Del. C. ch. 77 / 7 DE Admin. Code 1201) is an accidental-release prevention programme, closer to the federal Risk Management Plan than to Tier II

• MarylandListed elsewhere as strict, but we found no rulenot confirmed

  ⚠️ Listed by a secondary source as setting local thresholds; we could not find any Maryland rule that does, and the state’s own site refused our requests

Vermont Tier II package, “Conversion Factors (Gallons to Pounds)” (state agency table published with the official form)

Typical figures — check yours

Section 9 of your safety data sheet has the real number for your product. Where the strength of a solution matters, we refuse to convert rather than use a figure meant for a different strength.

⚠️ Vermont’s own form package tells you to use 9.00 pounds a gallon for a liquid you cannot find a figure for. We do not apply it for you — a made-up weight is worse than a question — but Vermont filers should know their state says it.

• Explosive
• Flammable (gases, aerosols, liquids, or solids)
• Oxidizer (liquid, solid, or gas)
• Self-reactive
• Pyrophoric (liquid or solid)
• Pyrophoric gas
• Self-heating
• Organic peroxide
• Corrosive to metal
• Gas under pressure (compressed gas)
• In contact with water emits flammable gas
• Combustible dust
• Acute toxicity (any route of exposure)
• Skin corrosion or irritation
• Serious eye damage or eye irritation
• Respiratory or skin sensitization
• Germ cell mutagenicity
• Carcinogenicity
• Reproductive toxicity
• Specific target organ toxicity (single or repeated exposure)
• Aspiration hazard
• Simple asphyxiant
• Hazard not otherwise classified

Read directly out of Tier2 Submit 2025 Rev 1 (resources/html/t2s_fields.js) on 2026-08-27 and compared character by character by our own check. The published sample file that ships with the data standard disagrees with the program on six of these, so we follow the program.

• Most states’ own thresholds

  We have read 4 states’ rules in full. For the rest we apply the federal thresholds and say on the answer that this is what we did.

• How each state wants the file handed over

  We have read 6 states’ own pages. For the other 41 we link the page your state maintains rather than describe it from memory. Ohio, for one, has no upload page at all and wants a certification letter and a site map alongside the file.

• Which hazards apply to your specific product

  Manufacturers classify the same product differently. We fill in what a typical sheet says and ask you to correct it against yours, because you are the one signing.

• Whether next year’s software changes the wording

  EPA published a longer hazard list in May 2026 that the current program does not use. When the new version ships we compare our strings against it before anyone files.