Compliance

SPCC Plans for Oilfield Tank Batteries: When You Need One and What Goes In It

A tank battery holding crude or produced water is an oil storage facility in the eyes of the EPA Spill Prevention, Control, and Countermeasure (SPCC) rule. Cross a size threshold and you need a written, engineer-certified plan. This guide covers when the rule applies and what the plan must contain.

Does the rule apply to you

The SPCC rule, 40 CFR Part 112, applies to a facility with aboveground oil storage capacity greater than 1,320 gallons, or buried storage capacity greater than 42,000 gallons, where a discharge could reasonably reach navigable waters or adjoining shorelines.

The size threshold is the part most people know, and it is the part most tank batteries cross. A few 500-barrel tanks put a battery well past 1,320 gallons of storage capacity, so the arithmetic is rarely the debate. The real question is whether a discharge could reasonably reach a navigable waterway or an adjoining shoreline, and that is judged case by case on the site.

The reach test is judged on the facts of the site: distance to the nearest water, drainage paths, ground conditions, and whether a release could move off the lease. When the answer is unclear, plan as if the discharge reaches water, because the cost of being wrong is a reportable spill.

A tank battery holding crude or produced water is an oil storage facility in the eyes of the rule. The term facility is read broadly: tanks, piping, and the surrounding equipment are treated as one unit, not as separate containers that happen to share a lease.

Counting oil at the battery

Count crude oil, produced water (for its oil content), diesel, lube oil, and other oils in tanks, and aggregate all aboveground containers at the facility. The count is total storage capacity, not what is in the tanks on a given day.

Capacity, not inventory, drives the count. A tank that is half full still counts at full capacity, because the plan has to prepare for the worst case: the whole contents reaching the ground. Storage tanks and the production equipment around them, including heaters, treaters, and gun barrels, all hold oil and all count toward the total.

Buried storage counts on a separate, larger threshold: more than 42,000 gallons of buried capacity brings the facility in on its own. Most tank batteries do not have buried storage at that scale, but the question belongs in the count either way.

Be honest about the lease. If the total capacity crosses the threshold, the facility is covered even if it looks small from the road. Under-counting is how a battery ends up without a plan it needed.

What the plan contains

The SPCC Plan must be prepared in accordance with 40 CFR 112.7 and the applicable industry-specific sections, and certified by a licensed professional engineer. It is not a form to fill in; it is a written plan for that facility, prepared by an engineer who takes responsibility for it.

Plan contents include: facility description and oil storage inventory, spill prediction (worst-case discharge), secondary containment (such as diking or berms around bulk tanks), inspection and testing procedures (regular visual inspections of tanks, piping, and containment), spill prevention practices (valve management, overfill protection), personnel training, and spill response procedures.

The engineer's certification makes the plan a document with an owner, and the facility's management owns the duty to run it. That division is why a plan can be certified and still fail an audit: certification covers the document, operation covers the site.

SPCC is a prevention plan. It is not the same as an emergency response plan, though response procedures belong inside it. The center of gravity is stopping the spill before it happens, with response written in for the day prevention fails.

Inspections and training

Regular visual inspections of tanks, piping, and containment are part of the plan. Valves get checked, overfill protection gets confirmed, and diking and berms get inspected for cracks, erosion, and standing liquid before they are needed in a real spill.

The point of the visual inspection is to catch problems while they are still small: a valve that drips, a berm with a crack, a pipe support that has settled. Found early, each one is a maintenance item. Found late, any one of them is a spill.

Personnel training is part of the plan too. The crew that works the battery has to know the spill prevention practices and the response procedures, and the training has to be documented. An inspector should be able to see who was trained, when, and on what.

The inspection schedule and training records are what an inspector looks at first. A battery with a certified plan and no inspection records is a battery that is not operating its plan, and that is the kind of gap that turns a minor issue into a citation.

Keeping the plan current

The plan must be reviewed and amended when the facility changes materially. Add a tank, reroute piping, change containment, and the plan has to change with it. A complete re-certification by a PE is required at least every 5 years.

Discharges that reach navigable waters must be reported to the National Response Center (800-424-8802) per federal rules. That reporting duty sits outside the plan: a discharge that reaches water triggers a call, full stop, and the call happens whether or not the plan predicted it.

Keep the paper organized and the records current between certifications. When the PE comes back for the five-year re-certification, the inspection log, training records, and change history are what make the re-certification a review instead of a rebuild.

The paperwork is part of the operation. A current, certified plan plus inspection and training records is what keeps a battery operating through an audit, and a lapse is what turns a small spill into a compliance problem. Tank work does not end at the battery edge: confined space entry at tank batteries runs on its own permit program, and the two programs have to work together on the same location.

Sources and further reading

• EPA: Oil Spill Prevention and Preparedness Regulations (SPCC)
• eCFR 40 CFR Part 112: Oil Pollution Prevention