This page collects the durable Ontario regulatory reference for above-ground and below-ground fuel-storage tanks: the CSA installation codes (B139, B149.1, B149.2), the Ontario regulations that adopt them (O. Reg. 211/01 for propane, O. Reg. 213/01 for fuel oil), the Ontario Fire Code setback rules, the federal ECCC E2 threshold, the TDG framework for bulk transport, and the TSSA director's orders currently in effect. Service-side entries for tank installation, bulk delivery, and TSSA-certified field technicians sit alongside the regulatory material so the operating reality and the code reality read as one reference. Section anchors mirror the prior slugs.

Regulation: CSA B149.1:25 (Natural Gas and Propane Installation Code)

CSA B149.1:25 — Natural Gas and Propane Installation Code. Adopted in Ontario via O. Reg. 212/01 (Gaseous Fuels). Governs propane and natural gas appliance installation, piping downstream of regulator.

Regulation: CSA B149.2 (Propane Storage and Handling Code)

CSA B149.2 — Propane Storage and Handling Code. Adopted via O. Reg. 211/01. Governs tank placement, setbacks, transfer.

Setback Rules:

• 125–500 USWG above-ground tank: ≥10 ft (3 m) from buildings, property lines, ignition sources, mechanical air intakes.
• 1,000 USWG and larger above-ground: ≥25 ft (7.5 m).
• Underground tanks ≤2,000 USWG: ≥10 ft from building/property line.
• ≥10 ft from septic; ≥25 ft from private well (for tanks <2,000 USWG); ≥50 ft for ≥2,000 USWG.

Regulation: ECCC E2 plan propane storage threshold (4.5 t / 9,300 L)

Confidence: Verified.

On-site propane storage of 4.5 tonnes or more (approximately 9,300 L liquid) triggers an Environmental Emergency Plan (E2 plan) requirement under federal regulation.

Authority: Environmental Emergencies Regulations, 2019, SOR/2019-51, under the Canadian Environmental Protection Act, 1999, S.C. 1999, c. 33.

Threshold: 4.5 tonnes propane on-site (≈9,300 L liquid).

Scope. Any facility — farm, greenhouse, commercial site — with bulk propane storage at or above the threshold must register with Environment and Climate Change Canada (ECCC) and maintain an E2 plan describing emergency response procedures.

Practical trigger. A single 4,000 USWG tank (≈15,140 L water capacity, filled to 80% ≈ 12,100 L propane) crosses the threshold. Most multi-tank agricultural and greenhouse installations exceed it.

Operator implication. Farms and greenhouses with multi-tank propane installations have typically crossed the E2 threshold without realizing it. E2 registration and plan documentation is a separate obligation from TSSA compliance — operators commonly track only the provincial regime and miss the federal one.

Distinction from TSSA RSMP. The ECCC E2 plan is federal and triggered by storage volume. TSSA Risk and Safety Management Plans are provincial, triggered by facility classification (retail outlet, filling plant, cardlock, private outlet, container refill centre) under O. Reg. 211/01 (see reg-oreg-211-01-propane). The two regimes operate in parallel; one does not satisfy the other.

Sources: Environmental Emergencies Regulations, 2019, SOR/2019-51; Environment and Climate Change Canada guidance.

Regulation: Ontario Fire Code Article 4.3 (AST setbacks and containment)

Ontario Fire Code O. Reg. 213/07, Part 4. Governs aboveground storage tank (AST) setbacks (Table 4.3.2.1, scaled by capacity), tank-to-tank separation, and secondary containment.

Secondary containment (4.3.7.3): 110% of single-tank capacity (multi-tank: largest tank + 10% of aggregate of others). Tank-to-tank (4.3.2.2): ≥1 m or 0.25 × (sum of diameters), whichever is greater; ≥6 m to LPG cylinders/tanks.

Regulation: O. Reg. 211/01 (Propane Storage and Handling)

Confidence: Verified.

Ontario Regulation 211/01 — Propane Storage and Handling — under the Technical Standards and Safety Act, 2000, S.O. 2000, c. 16. Adopts CSA B149.2 (Propane Storage and Handling Code; see reg-csa-b149-2). Originally in force 2001; consolidated through O. Reg. 173/15.

Covers storage, handling, transportation, transfer, and on-vehicle installation of propane in Ontario.

Distributor inspection obligation — s. 18

Verbatim, O. Reg. 211/01, s. 18(1):

"No distributor shall supply propane to a container that is connected to an appliance or work unless the distributor is satisfied that the installation and use of the appliance or work complies with the Act and this Regulation and, (a) unless the distributor has inspected the appliance or work at least once within the previous 10 years; or (b) unless the distributor has inspected the appliance or work in accordance with a quality assurance inspection program."

Inspection report must be retained until the next inspection.

Operational implication

An installation that has not been inspected within the previous 10 years cannot legally be refilled by any distributor in Ontario, regardless of whether the customer is willing to take delivery. The 10-year clock is measured from the most recent §18 inspection on file with a registered distributor — not from the install date and not from a TSSA inspection.

Acquisition context

When buying or inheriting a farm, the §18 inspection date is the single most important document to find in the file. A locked-out tank from a missing inspection record is a deal-breaker, not a paperwork nuisance: the property cannot be refilled until a registered distributor has performed and documented a §18 inspection. Pre-close due diligence on any rural property with on-site propane storage should specifically request the most recent §18 inspection report by date.

For SW Ontario operators specifically

This is the leading paperwork failure on inherited or recently-acquired livestock and greenhouse properties. Sellers commonly do not retain the §18 report; the buyer's distributor will not refill until a fresh inspection is performed.

Cross-references

• reg-tssa-fs-271-24-200-psig-tanks — separate compliance regime around tank MAWP.
• reg-eccc-e2-plan-propane-threshold — federal storage-volume threshold that operates in parallel with O. Reg. 211/01.
• reg-csa-b149-2 — the installation code adopted by 211/01.

Sources

Ontario Regulation 211/01 (consolidated through O. Reg. 173/15); Technical Standards and Safety Act, 2000, S.O. 2000, c. 16; TSSA Fuels Safety Program.

Regulation: RSMP threshold and private-outlet status for greenhouse propane installations

Confidence: Verified for regulatory citation; Inferred for the practitioner threshold (TSSA determines private-outlet status by activity, not by volume).

Since 2008, Risk and Safety Management Plans (RSMPs) under Ontario Regulation 211/01 (Propane Storage and Handling) have been required for "retail outlet, filling plant, cardlock or keylock, private outlet or container refill centre" propane facilities (TSSA Fuels Safety guidance).

Definitions that matter for greenhouses.

• A private outlet is a propane facility that stores propane for the owner's own use and is not a customer-fill location.
• A typical greenhouse storing propane for its own heat (not refilling third-party vehicles or cylinders) generally does not qualify as a private outlet under typical interpretations — but the determination is case-by-case by TSSA based on activity, not by storage volume alone.
• Level 1 RSMPs cover smaller-scale propane transfer facilities; Level 2 RSMPs cover larger bulk plants.

Practitioner rule-of-thumb. RSMP review typically becomes a serious question when on-site storage exceeds 5,000 USWG (19,000 L) of propane — though this is operator-community convention, not statutory text. Greenhouse operators should confirm with their TSSA-registered fuels contractor at design time rather than relying on volume rules.

Greenhouse practical implication.

• A 1–2-acre Norfolk floriculture operation with a manifolded 2× 30,000 USWG configuration (~225,000 L working storage) is well above the practitioner threshold and should expect TSSA review of private-outlet status. Confirm in writing with the TSSA Fuels Safety branch.
• A single 4,000 USWG tank at a 1-acre propagation house sits below the practitioner threshold but at the ECCC E2 plan threshold (see below).

Distinct federal obligation — ECCC E2 plan. Environmental Emergencies Regulations, 2019 (SOR/2019-51) trigger at 4.5 tonnes propane on-site (~9,300 L liquid). The federal E2 plan and the provincial RSMP are independent obligations; satisfying one does not satisfy the other. See reg-eccc-e2-plan-propane-threshold.

Cross-references: reg-oreg-211-01-propane, reg-csa-b149-2, reg-eccc-e2-plan-propane-threshold, op-greenhouse-bulk-propane-tank-sizing.

Sources: Ontario Regulation 211/01 (Propane Storage and Handling), under the Technical Standards and Safety Act, 2000, S.O. 2000, c. 16; TSSA Fuels Safety RSMP guidance; CSA B149.2-20 (Propane Storage and Handling Code) adopted via O. Reg. 211/01.

Regulation: Transportation of Dangerous Goods (Canada) — bulk fuel transport

Transportation of Dangerous Goods Act and Regulations (Canada). Governs bulk fuel transport and propane cylinder requalification (TC stamps).

Tank trucks must comply with TC-406/407 specifications; drivers must hold TDG certificates and the Ontario fuel-handling certifications appropriate to the product.

Specific authorities and current editions (added 2026-05-16)

• Statute: Transportation of Dangerous Goods Act, 1992 (S.C. 1992, c. 34).
• Regulations: SOR/2001-286 (TDGR).
• Part 6 (Training) — s. 6.1(1): "A person who handles, offers for transport or transports dangerous goods must (a) be adequately trained and hold a training certificate in accordance with this Part; or (b) perform those activities in the presence and under the direct supervision of a person who is adequately trained and who holds a training certificate."
• Training certificate validity: 36 months (3 years) for road transport (Transport Canada TDG Bulletin — TDG Training).
• Part 3 (Shipping documents) — s. 3.5: UN1202 (diesel), UN1203 (gasoline), proper shipping name, primary class (Class 3), packing group (PG III diesel, PG II gasoline), quantity, 24-hour emergency telephone, ERAP reference where required; s. 3.7 location of document within driver's reach in the cab.
• Part 4 (Safety marks): Class 3 placards and UN number on all four sides of the cargo tank where capacity ≥3,000 L (s. 4.15, 4.15.1, 4.16).
• Part 5 (Means of containment) — s. 5.14 invokes CSA B621, which invokes CSA B620 for design, construction, certification, testing, repair, and marking of highway tanks.
• Current CSA series: CSA B620:20 / B621:20 / B622:20 — see reference-csa-b620-b621-b622-2020-series for the detail, including TC 406 spec and Tables 7.2/7.3 re-test schedule.

Regulation: TSSA Director's Order FS-271-24 — 200 psig propane tanks out of service (Oct. 1, 2025)

Confidence: Verified.

Propane storage tanks with a Maximum Allowable Working Pressure (MAWP) below 250 psig must be removed from service in Ontario as of October 1, 2025.

Authority: TSSA Director's Order FS-271-24, issued August 8, 2024 under the Technical Standards and Safety Act, 2000, S.O. 2000, c. 16.

Effective date: October 1, 2025.

Scope: All propane storage tanks (residential, agricultural, commercial, industrial) with nameplate MAWP below 250 psig.

Affected tanks. Older tanks manufactured before the 250 psig design standard became universal. Operators must verify MAWP on the tank nameplate or with the supplier.

Compliance path. Tank replacement, typically initiated by the propane distributor as part of the regular 5-year inspection cycle under CSA B149.2 (see reg-csa-b149-2).

Operator implication. Any farm, greenhouse, or home-heating customer with a propane tank installed before approximately 2010 should confirm MAWP at the next inspection. Distributors are obligated under O. Reg. 211/01 (see reg-oreg-211-01-propane) to refuse fill on non-compliant equipment.

Sources: TSSA Director's Order FS-271-24 (Aug. 8, 2024); Mechanical Business magazine (Oct. 21, 2024); TSSA Fuels Safety bulletins.

Service: Bulk fuel delivery

Delivery of fuel or propane from a tank truck into a customer-owned storage tank — the foundational distribution service that distinguishes a fuel marketer from a retailer. Volumes typically run from a few hundred litres for residential heating oil up to full tank-truck loads (typically 30,000–45,000 L) for commercial customers.

Tank-truck operations are governed by the federal Transportation of Dangerous Goods Act and Regulations; drivers must hold TDG training and trucks must meet TC vessel specs. Off-loading at customer sites must follow CSA B139 (fuel oil) Annex M filling procedures or CSA B149.2 (propane) handling code.

Service: Fuel and propane tank installation

Field installation of new fuel-oil, motor-fuel, or propane tanks — including site prep, plumbing, electrical/leak-detection, venting, regulator setup, and commissioning. Performed by certified technicians employed by the marketer or by sub-contracted TSSA-registered fuel contractors.

Fuel-oil tank installation requires a TSSA-registered fuel-oil contractor and a licensed Oil Burner Technician (OBT-1, OBT-2, or OBT-3) or Petroleum Mechanic (PM-1/PM-2). Propane tank installation requires a TSSA-certified gas technician (G3/G2/G1) under O. Reg. 215/01 and CSA B149.1/B149.2.

Service: TSSA-certified field technicians

Field staff (drivers, inspectors, service technicians, installers) who hold the relevant TSSA fuel-industry certificates required for the work they do — Oil Burner Technicians (OBT-1/2/3), Petroleum Equipment Mechanics (PM-1/PM-2), Gas Technicians (G1/G2/G3), and Records of Training (ROT) for activities like cylinder filling, pump attendant, bulk plant operator, and construction-heater operation.

Issued under O. Reg. 215/01 (Fuel Industry Certificates) administered by TSSA. Certificate holders renew on a defined cycle. TSSA registers and audits fuel contractors and inspectors.

{
  "faq": [
    {
      "a": "For tanks 125 to 500 USWG, the minimum setback is 3 m (10 ft) from buildings, property lines, ignition sources, and mechanical air intakes. Tanks 1,000 USWG and larger require 7.5 m (25 ft). All tanks under 2,000 USWG must sit at least 3 m from septic systems and 7.5 m from private wells; tanks 2,000 USWG and larger require 15 m from a well. The rules are adopted in Ontario through O. Reg. 211/01.",
      "q": "What setback distances does CSA B149.2 require for above-ground propane tanks in Ontario?"
    },
    {
      "a": "On-site propane storage of 4.5 tonnes or more — roughly 9,300 L of liquid — triggers an Environmental Emergency Plan under the federal *Environmental Emergencies Regulations, 2019* (SOR/2019-51). A single 4,000 USWG tank crosses the threshold once it is filled past about 80 percent, so most multi-tank agricultural and greenhouse installations are already over the line. The E2 plan is federal and separate from any TSSA obligation; one regime does not satisfy the other.",
      "q": "When does on-site propane storage trigger a federal ECCC E2 plan?"
    },
    {
      "a": "Section 18 of O. Reg. 211/01 prevents any distributor from supplying propane to a connected appliance or work unless the installation has been inspected within the previous 10 years (or under an approved quality assurance program). The inspection report must be retained until the next inspection. An installation without a current §18 report on file cannot legally be refilled — regardless of customer demand — and a missing §18 record is the single most common paperwork failure on inherited or recently-acquired rural properties.",
      "q": "What is the §18 distributor inspection rule under Ontario Regulation 211/01?"
    },
    {
      "a": "TSSA Director's Order FS-271-24, issued August 8, 2024, required all propane storage tanks with a Maximum Allowable Working Pressure below 250 psig to be removed from service in Ontario as of October 1, 2025. The order applies to residential, agricultural, commercial, and industrial tanks. Operators with tanks installed before roughly 2010 should confirm MAWP at the nameplate; under O. Reg. 211/01, distributors are obligated to refuse fill on non-compliant equipment.",
      "q": "When do propane tanks below 250 psig have to be removed from service in Ontario?"
    }
  ],
  "confidence": "verified",
  "description": "Plain-language Ontario reference for above-ground and underground fuel-storage tanks: CSA installation codes, O. Reg. setbacks, ECCC E2, TSSA orders.",
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