When Is an SPCC Plan Required: Thresholds, Location, and Exemptions

An SPCC plan is required when a non-transportation facility stores enough oil to cross federal capacity thresholds and sits where a spill could reasonably reach navigable waters. The two triggers are aggregate aboveground oil storage above 1,320 gallons or completely buried storage above 42,000 gallons. If your facility crosses either line and the location test is met, a certified Spill Prevention, Control, and Countermeasure plan must be in place before operations begin.¹

The Two Capacity Thresholds

The rule looks at maximum capacity, not how much oil you actually keep on hand. Every container that holds 55 gallons or more counts toward your totals. Containers smaller than 55 gallons are excluded from the calculation entirely.

Aboveground storage: aggregate capacity above 1,320 gallons.¹
Completely buried storage: aggregate capacity above 42,000 gallons.¹

Either threshold on its own is enough. Six 250-gallon aboveground tanks add up to 1,500 gallons, and that facility needs a plan even if nothing is buried.

What Counts Toward the Total

You include every fixed tank, drum, tote, and portable container with a shell capacity of 55 gallons or more. Mobile or portable containers must either be listed individually in the plan or estimated by expected number, oil type, and anticipated capacity.² Use the container’s maximum shell capacity, not its typical fill level.

Several container types stay out of the calculation even when they hold 55 gallons or more:

Permanently closed containers no longer in service
Fuel tanks powering vehicles or equipment (motive power containers)
Hot-mix asphalt and containers holding it
Heating oil containers used solely at a single-family residence
Pesticide application equipment and related mixing containers
Milk and milk product containers and associated piping

Because these exclusions apply to the capacity math itself, a site with 1,400 gallons of aboveground storage that includes a 200-gallon residential heating oil tank falls below the 1,320-gallon trigger.¹

The Location Test

Meeting a capacity threshold is only half the picture. The facility must also be positioned so that a discharge could reasonably reach navigable waters or adjoining shorelines. EPA defines navigable waters broadly as waters of the United States, including territorial seas.³ The analysis looks at proximity to rivers, lakes, wetlands, coastlines, and drainage pathways such as storm sewers.

One point catches many facilities off guard. EPA requires you to ignore man-made barriers when running this test. Dikes, berms, retaining walls, and other containment structures do not count. If the natural terrain and drainage would carry oil to navigable water without those features in place, the location test is met.¹ Most sites near any waterway or storm drain system will satisfy it.

Which Facilities and Which Oils

The rule applies to any non-transportation-related onshore or offshore facility that stores, uses, produces, refines, or distributes oil.¹ That reaches manufacturing plants, power generators, oil production sites, farms with bulk fuel storage, warehouses, and commercial buildings with large backup generators or heating oil systems. Fuel moving in a truck on the highway falls under Department of Transportation rules and is outside SPCC. That same fuel sitting in a storage tank at your loading dock is inside it. Mobile and portable operations are covered while they operate in a fixed location.

“Oil” under the regulation is much broader than petroleum. It covers oil of any kind or in any form.⁴

Petroleum oils: crude oil, fuel oil, mineral oil, sludge, oil refuse, and refined products such as gasoline and diesel
Animal-based oils: fats, oils, and greases from animal, fish, or marine mammal sources
Vegetable oils: oils from seeds, nuts, fruits, or kernels
Synthetic and mineral oils, including lubricants and hydraulic fluids
Oil mixed with non-dredged waste

A food processing plant with bulk vegetable oil, a restaurant supply warehouse with cooking oil, or a farm with animal fat rendering equipment can fall under SPCC if the capacity and location tests are met.

When the Rule Does Not Apply

A facility used exclusively for wastewater treatment is exempt, provided it is not being used to meet any other SPCC requirement. Recovering or recycling oil from wastewater does not qualify as wastewater treatment for this purpose, so a facility doing that remains covered.³

A facility that stays below both capacity thresholds is exempt as long as no single container exceeds 55 gallons that would push it over. A facility where the natural geography makes it impossible for a spill to reach navigable waters is also exempt, though that judgment must ignore man-made containment.¹

When the Plan Must Be Ready

A new facility that meets the SPCC criteria must have a completed, certified plan in place before operations begin. There is no grace period.⁵

Mobile or portable facilities do not need a fresh plan for every new site. A general plan can travel with the equipment, but the facility must be set up and operated at each location according to the discharge prevention practices in that plan. The plan governs the equipment only while it is in a fixed, non-transportation operating mode.

Who Has To Certify It

Most facilities need a licensed Professional Engineer to review and certify the plan.⁶ EPA also created a “qualified facility” pathway that lets smaller, lower-risk operations self-certify. There are two tiers:⁷

Tier I (template-based self-certification): no individual aboveground container larger than 5,000 gallons, and the facility meets the spill history criteria below.
Tier II (full self-certified plan): 10,000 gallons or less in total aboveground storage, and the facility meets the same spill history criteria.

The spill history test applies to both tiers. In the three years before certification, the facility must not have had a single discharge above 1,000 gallons to navigable waters, or two separate discharges each above 42 gallons within any 12-month period. Spills caused by natural disasters, acts of war, or terrorism do not count.⁷

If aboveground capacity later grows past 10,000 gallons, self-certification eligibility is lost and a PE must certify the plan within six months of the change.

Keeping the Plan Current

Once a plan is in place, you must review it at least every five years and update it to reflect any changes in oil storage operations.⁸ Common triggers for an amendment include adding tanks, changing oil types, altering drainage, or acquiring additional property with oil storage. Technical amendments to a non-qualified facility’s plan must carry a PE’s certification.⁹

If you are close to any of the capacity thresholds, run the numbers using maximum shell capacity of every 55-gallon-or-larger container after removing the excluded categories, then apply the location test with your containment structures mentally erased. If both come out on the covered side, the plan needs to exist before the first drop of oil is stored on the site.