State sheet · AZ
Tier II reporting requirements in Arizona
- Deadline
- 1 March, yearly
- Takes our file
- No
- Own thresholds
- No — local rules vary
- Fee
- $75 then $20
- Filing route read
- 2026-09-11
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How Arizona takes it
Arizona takes Tier II through the state’s own myDEQ portal, where you key the data in. Our answer is the worksheet you type from.
This state does not take the file. Our answer works as the worksheet you type from, with the rule behind every number.
The filing is due 1 March each year and covers the calendar year before it. Filing with Arizona closes the state’s side only. Whether your local committee and fire department also get it is up to your county — ask them, and post each a copy if they do not take the electronic filing.
Before you send it — what else Arizona asks for
Arizona asks for more than the numbers: myDEQ has you upload safety data sheets, a site map and a Facility Emergency Response Plan as you go. The site map is not optional: Arizona says it is now mandatory for every facility. Gather those before you start. Whether you also post copies locally depends on your own jurisdiction: ADEQ runs Electronic Agreements, and if the agency with jurisdiction over your site has signed one you do not mail or email them a copy — if it has not, you do. Two local twists to check. A site on Gila River Indian Community land still has to post hard copies to the GRIC Office of Emergency Management even though it files online. And the Town of Gilbert runs its own fire regulation whose triggers are far below the state’s, so a Gilbert site can owe a filing on chemicals that are nowhere near a Tier II threshold — though a site reporting only those is exempt from the state filing fee. The fee itself is $75 for your first facility report and $20 for each additional one, capped at $500 a year.
Does Arizona set its own limits?
Arizona itself follows the federal thresholds. A city or county inside it may be stricter, and that is decided locally.
Arizona uses the federal thresholds, so the state answer is the federal answer. The difference is where your site sits. The Town of Gilbert runs its own fire regulation with triggers far below the state’s, and Gilbert sites report those chemicals through the same Arizona system even when they are nowhere near a Tier II threshold — with the small consolation that a site reporting only those pays no state filing fee. If your site is in Gilbert, ask the fire department what its list is; we do not hold it.
The words we read
ADEQ, AZSERC Tier II reporting page (azdeq.gov), read 2026-09-11 through the Internet Archive snapshot dated 2025-08-15 (the live site refuses our requests with HTTP 403 and we do not work around that, so this is the page as of that date). Arizona keeps the federal numbers: “For above-ground storage tanks and non-retail USTs, the threshold level for reporting is 10,000 pounds. For gasoline at a retail gas station, the threshold level is 75,000 gallons (all grades combined).” What differs is local: “Facilities filing in the Town of Gilbert should be aware that Gilbert has its own Fire Department Regulation for reporting chemicals, and those reporting quantity triggers are much lower than what the State mandates as a Tier II chemical. Though these particular chemicals may not constitute a Tier II report, the Town of Gilbert Fire Department requires its facilities to use the Arizona Tier II Reporting System to manage these chemicals.”
Where we read this
- ADEQ, AZSERC Tier II reporting page (azdeq.gov), read 2026-09-11 through the Internet Archive snapshot dated 2025-08-15 (the live site refuses our requests with HTTP 403 and we do not work around that, so this is the page as of that date). Deadline: “Tier II reporting is due annually, starting on January 1 and ending on March 1.” Fees: “a $75 filing fee for the first required facility report and an additional $20 fee for each additional required facility report, up to a maximum limit of $500 per annual reporting period (Arizona Administrative Code R18-18-107 B.1.).”Same page, on local copies, under “Fire Departments/LEPCs Accepting Electronic Reporting”: “If the agency with jurisdiction over your facility accepts electronic reporting, you do not have to mail or email copies of your Tier II report to them.” ADEQ calls these “Electronic Agreements” and lists the agencies that have signed one. Gila River Indian Community: “hard Copies of Tier II information for facilities that reside on the GRIC still need to be submitted to: GRIC Office of Emergency Management.” Gilbert: “Gilbert has its own Fire Department Regulation for reporting chemicals, and those reporting quantity triggers are much lower than what the State mandates as a Tier II chemical … those facilities that are ONLY reporting chemicals that meet the Town of Gilbert Fire Department Regulation will be exempt from any filing fees.”Site maps: “Fire agencies and Local Emergency Planning Committees (LEPCs) across the state have requested that facilities provide site maps with all Tier II reports.” The portal takes uploads of “Safety Data Sheets, Site Maps, and Facility Emergency Response Plans”. Nothing we saw says myDEQ imports an EPA Tier2 Submit file, so we do not claim ours works here. AZSERC support: 602-771-0397.ADEQ, AZSERC Tier II page (azdeq.gov/TierII), Internet Archive snapshot dated 2025-08-15: “The requirement for site maps is now mandatory for all facilities submitting Tier II reports in the myDEQ Tier II platform.”Checked 2026-09-11
- ADEQ, AZSERC Tier II reporting page (azdeq.gov), read 2026-09-11 through the Internet Archive snapshot dated 2025-08-15 (the live site refuses our requests with HTTP 403 and we do not work around that, so this is the page as of that date). Arizona keeps the federal numbers: “For above-ground storage tanks and non-retail USTs, the threshold level for reporting is 10,000 pounds. For gasoline at a retail gas station, the threshold level is 75,000 gallons (all grades combined).” What differs is local: “Facilities filing in the Town of Gilbert should be aware that Gilbert has its own Fire Department Regulation for reporting chemicals, and those reporting quantity triggers are much lower than what the State mandates as a Tier II chemical. Though these particular chemicals may not constitute a Tier II report, the Town of Gilbert Fire Department requires its facilities to use the Arizona Tier II Reporting System to manage these chemicals.”State guidance — the code wins where they differ
- Arizona’s own Tier II pageWe can be right today and the state can change tomorrow. This link does not go stale.
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