Reference Source

EPCRA Tier II hazardous chemical inventory reporting thresholds by state

The quantity threshold at which a facility must file an annual Tier II hazardous chemical inventory report, taken from each jurisdiction's own statute or rule and compared to the federal EPCRA Section 312 baseline. Federal thresholds: ≥10,000 lbs for hazardous chemicals, ≥500 lbs or the threshold planning quantity (whichever is lower) for extremely hazardous substances (40 CFR Part 370). EPA authorizes states to set lower thresholds and add chemicals. Seven jurisdictions are published here as doing so, each quoted from the instrument that sets it: California (55 gal / 500 lbs / 200 cu ft, Cal. Health & Safety Code § 25507), Vermont (100 lbs or the TPQ, whichever is less — the strictest general threshold found), New York City (500 lbs with a hazard-category table reaching down to 1 lb, 15 RCNY 41-04), Delaware (55 gal / 500 lbs, 16 Del. C. § 6306), Louisiana (500 lbs, LAC 33:V.10109), Oregon (a graduated table, OAR 837-085-0070), and New Jersey (EHS at 500 lbs or the SARA 302 TPQ, N.J.A.C. 7:1G). Sixteen states are published at the federal figures, each because its own SERC or environmental agency states those figures in its own words — Nevada, Utah, Virginia, Kansas, Maryland, Hawaii, Texas, North Carolina, Rhode Island, Illinois, Colorado, Pennsylvania, Ohio, Washington, Michigan and South Dakota. Four of them reach the same numbers through an instrument of their own: Illinois under 430 ILCS 100 and 29 Ill. Adm. Code 620, Pennsylvania under Act 165 of 1990 § 207(c), Ohio under ORC § 3750.08, and Hawaii which collects them on its own HCI/Tier II Form. Utah states the pattern outright — its DEQ answers the question directly: 'No, currently Utah has not implemented any other Tier 2 reporting requirements in addition to the federal requirements'. Nevada's International Fire Code quantities are a separate permit obligation that secondary sources routinely mistake for the reporting threshold. Answers 'does my California facility need to file Tier II for 600 pounds of a hazardous chemical' (yes — the California threshold is 500 lbs for solids, below the federal 10,000), 'what is Vermont's Tier II threshold', 'is Texas at the federal Tier II threshold', and 'which states have lower Tier II thresholds than federal'. States absent from this dataset are states whose own instrument has not been read, not states confirmed to match the federal baseline: a state appears here only once its own agency page states a number, never because no lower number was found.

Records24
Sources27
Verified
Review by
LicenceFederal regulations are US Government works, not copyrightable. State statutes and regulations are state government edicts, which carry no copyright either (Banks v. Manchester; Georgia v. Public.Resource.Org, 2020). Facts are not copyrightable (Feist, 1991); each record quotes a short attributed span and links back.

The data

StateGeneral hazardous chemical thresholdEHS thresholdSpecial categories or chemicalsReport nameCitationFiling deadline
California55 gallons for materials that are liquids, 500 pounds for solids, or 200 cubic feet for compressed gasequal to, or greater than, the threshold planning quantitya total weight of 5,000 pounds for solids or a total volume of 550 gallons for liquids, if the hazardous material is a solid or liquid substance that is classified as a hazard for purposes of Section 5194 of Title 8 of the California Code of Regulations solely as an irritant or sensitizerHazardous Materials Business Plan (HMBP)Cal. Health & Safety Code § 25507
Colorado10,000 pounds for any other hazardous chemical500 pounds or its TPQ, whichever is lowerThe thresholds for reporting gasoline and diesel fuel stored completely underground at retail gas stations are 75,000 gallons and 100,000 gallons, respectively.March 1st
Delaware55 gallons or 500 pounds, whichever is lower55 gallons, 500 pounds or the threshold planning quantity, whichever is lowerFor a substance used solely for the purpose of heating a building or buildings at a facility, the threshold for that substance at that facility shall be 10,000 pounds.16 Del. C. § 6306 (Delaware Emergency Planning and Community Right-To-Know Act)March 1
Federal (baseline)10,000 pounds (or 4,540 kg)500 pounds (227 kg—approximately 55 gallons) or the Threshold Planning Quantity (TPQ), whichever is lower40 CFR § 370.10 (thresholds); 40 CFR § 370.45 (March 1 deadline)March 1st
Hawaiinot less than 10,000 poundsnot less than 500 pounds, or the threshold planning quantity (TPQ), whichever is lessHCI/Tier II FormMarch 1
Illinois10,000 pounds or more500 pounds or the threshold planning quantity (TPQ), whichever is less430 ILCS 100; 29 Ill. Adm. Code 620March 1
Kansasthe threshold level is 10,000 poundseither 500 pounds or the Threshold Planning Quantity (TPQ), whichever is lowerMarch 1
Louisiana500 pounds or more on any single day500 pounds or more or the listed threshold quantity if lower than 500 poundsLAC 33:V.10109 (Louisiana Right-to-Know, R.S. 30:2361 et seq.)March 1
Maryland10,000 pounds500 pounds or the EPA established TPQ for that chemical, whichever is lowerMarch 1st
MichiganAll other OSHA hazardous chemicals (except as stated in the next bullet) = 10,000 pounds500 pounds or the Threshold Planning Quantity (TPQ), whichever is lessMarch 1
Nevadaat or above 10,000 pounds500 pounds or the threshold planning quantity, whichever is lessNevada State Fire Marshal hazardous materials reporting and permit – All chemicals in quantities as listed in the International Fire Code, 2024 Edition. This includes all gas stationsNevada Combined Agency Hazardous Materials Facility ReportMarch 1
New JerseyA threshold of 500 pounds or the Federal SARA 302 threshold planning quantity, whichever is lowerCommunity Right to Know SurveyN.J.A.C. 7:1G-3.1(b) and 7:1G-5.1(a) (Worker and Community Right to Know Act, N.J.S.A. 34:5A-1 et seq.)March 1
New York CityThe current threshold reporting quantity of 500 pounds was kept for substances presenting health or physical hazard not otherwise specifiedunusual physical hazards [1 pound], special physical hazard [10 pounds], health hazards [100 pounds), physical hazards [500 pounds]Facility Inventory Form (FIF)15 RCNY §§ 41-04, 41-05; N.Y.C. Admin. Code §§ 24-703, 24-706March 1
North Carolina10,000 lbs.the TPQ or 500 lbs., whichever is lessMarch 1st
Ohio10,000 pounds500 pounds or the listed threshold planning quantity (TPQ), whichever is lessSection 3750.08 of the ORCMarch 1
Oregon500 gallons, cubic feet, or poundsmeets or exceeds the Threshold Planning Quantities as defined by 40 CFR 355Any highly toxic material or explosive in quantities equal to, or greater than, ten pounds, five gallons or 20 cubic feetHazardous Substance ReportOAR 837-085-0070 (thresholds); OAR 837-085-0090 (March 1 deadline)March 1
Pennsylvania10,000 pounds500 pounds (or 227 kg.) or the threshold planning quantity (TPQ), whichever is lowerGasoline – 75,000 gallons. Diesel fuel – 100,000 gallonsPennsylvania Act 165 of 1990, Section 207(c)March 1
Rhode Islandthe minimum reporting threshold is 10,000 pounds (4,540 kg)500 pounds (227 kg) or the Threshold Planning Quantity (TPQ), whichever is lowerMarch 1
South Dakotaexceeds 10,000 pounds at any one time during the calendar year
TexasHazardous chemicals: 10,000 lbs.500 lbs or the threshold planning quantity (TPQ), whichever is lessGasoline: 75,000 gallons Diesel Fuel (all grades combined): 100,000 gallons
Utahequal or exceed 10,000 pounds500 pounds or the Threshold Planning Quantity (TPQ), whichever is lowerMarch 1
Vermont100 lbs or the threshold planning quantity (TPQ) whichever is less100 lbs or the threshold planning quantity (TPQ) whichever is lessif the chemical is a “petroleum products, and fuels” or “road salts”, is the amount equal to or greater than 10,000 lbs.? or Any amount of carcinogens as defined in VOSHA regulation 1910.1200(d) or Any amount of explosives requiring a license by Public Safety20 V.S.A. Chapter 1 (the statute VEM's EPCRA programme page cites); Vermont Rules and Regulations for Community Right-to-KnowMarch 1st
Virginia10,000 pounds500 pounds or the Threshold Planning Quantity (TPQ) of that EHS, whichever is lowerMarch 1
Washington10,000 pounds or more500 pounds OR the threshold planning quantity (TPQ), whichever is lowerMarch 1

Where this came from

Every record above links the page it was taken from and quotes the sentence that states it. These are the 27 sources this dataset was assembled from.

Machine-readable

From your own code

Same records, same quotes, without scraping the page: refsource is on PyPI and npm. Each value comes back carrying the URL it was read from and the sentence on that page that states it — .source and .quote sit on the value itself rather than in a side channel, so the checking step is available instead of skipped.

pip install refsource
refsource lookup epcra-tier-ii-state-reporting-thresholds jurisdiction=California

npx -y refsource lookup epcra-tier-ii-state-reporting-thresholds jurisdiction=California

Set your AI assistant up to use this

Two files and no account. Put this in .mcp.json at the root of your project — Claude Code, Cursor, Windsurf, VS Code and Codex all read that file — and your assistant can look this dataset up instead of recalling it. The server is remote, keyless and read-only.

{
  "mcpServers": {
    "referencesource": {
      "type": "http",
      "url": "https://referencesource.org/mcp"
    }
  }
}

Add to Cursor · or, on the command line: claude mcp add --transport http referencesource https://referencesource.org/mcp --scope project

Then one line in the project's CLAUDE.md or AGENTS.md, so the assistant knows when to reach for it:

When a question needs "EPCRA Tier II hazardous chemical inventory reporting thresholds by state", call the referencesource MCP server at https://referencesource.org/mcp (tool `search_records`, dataset_slug `epcra-tier-ii-state-reporting-thresholds`) instead of answering from memory — every record it returns carries its source URL and a verbatim quote from that page.

What each tool does, and the servers built over single registers: Connect your AI assistant.

24 records. last verified against source . due for re-check by .

Licence. Federal regulations are US Government works, not copyrightable. State statutes and regulations are state government edicts, which carry no copyright either (Banks v. Manchester; Georgia v. Public.Resource.Org, 2020). Facts are not copyrightable (Feist, 1991); each record quotes a short attributed span and links back.