What this is
What is a spill prevention plan?
What is a spill prevention plan?
A spill prevention plan is the written, site-specific plan for preventing a release of oil or another liquid from reaching the environment. It records what is stored, the containment and drainage designed to stop a release, and the response capability kept ready if containment is breached. Under SPCC it is a distinct, named document, not a general risk assessment.
How is this different from a spill response record?
The prevention plan is written before anything happens and describes design: bunding, drainage isolation, transfer supervision, kit provision. The response record is written after a spill has occurred and describes what was actually done. A site can have an excellent plan and a poor response, or the reverse, and an auditor treats them as separate questions.
What does 'reviewed yearly' actually require?
More than re-reading the document. SPCC separately requires a full technical review at least every five years and amendment within a set period of any material change, so the annual cycle sits inside, not instead of, those statutory triggers.
Scope
When is a spill prevention plan required?
This plan is one step in a larger programme, and its most common misuse is being treated as though it also covers what happens once a release has occurred. It does not.
Use this template when
- A new bulk liquid storage area, tank, IBC farm or above-ground fuel store is commissioned
- Containment, drainage or transfer arrangements have changed materially since the last version
- The stated annual review interval has been reached
- A regulator, insurer or audit needs evidence that containment and response capability were designed in, not assumed afterwards
- A new substance is added to the site inventory that changes the containment or response requirement
Do not use it for
- Spill Report, which records an actual release of chemical, fuel, oil or wastewater once one occurs
- Spill Response Record, which records what was done to contain, clean up and dispose of a spill in progress
- Environmental Notification Record, which records what was reported to a regulator, when and by whom, after a reportable release
- Containment Inspection, which is the periodic field check that the bunding and drainage described here still perform as designed
- Anything outside KnowEnviro, which belongs in the workspace that owns that process
Compliance mapping
Which EPA SPCC 40 CFR 112 requirements does this satisfy?
SPCC is prescriptive about what a prevention plan must contain and comparatively open about format, which means the plan's defensibility rests on whether the containment sizing and testing can actually be shown, not on how the document reads.
| Clause | Requirement | Where it lands |
|---|---|---|
| 40 CFR 112.3 | SPCC Plan prepared and implemented before oil storage begins, certified as applicable to the facility | Header |
| 40 CFR 112.5 | Plan reviewed at least once every five years, amended within a set period of any material change | Header |
| 40 CFR 112.20 | Facility Response Plan obligation triggered where storage crosses the substantial harm threshold | Substances and quantities |
| 40 CFR 112.8(c)(2) | Secondary containment sized to the capacity of the largest single container, plus freeboard for precipitation | Containment |
| 40 CFR 112.8(c)(6) | Periodic integrity testing of bulk storage containers and their containment | Containment |
| 40 CFR 112.7(h) | Containment, drainage and supervision at tank car and tank truck loading/unloading areas | Containment |
| 40 CFR 112.7(f) | Personnel trained in discharge prevention procedures and spill control equipment operation | Response capability |
| 40 CFR 112.7(e) | Inspections and tests per written procedures, records kept and signed by the inspector or supervisor | Response capability |
What it does not cover
- Spill Report, which records an actual release rather than the design meant to prevent one.
- Spill Response Record, which records what was done to contain, clean up and dispose of a spill once it has happened.
- Environmental Notification Record, which records what was reported to a regulator, when and by whom.
- Containment Inspection, which is the periodic field verification that the bunding and drainage described here still perform as designed.
- Facility Response Plan requirements under 40 CFR 112.20, a distinct, more detailed planning duty triggered once storage crosses the substantial harm threshold.
Global
Spill Prevention Plan requirements by country
Prevention duties are drafted around oil and hazardous liquid storage specifically, and the containment arithmetic differs less between regimes than the mechanism that enforces it.
EPA SPCC, 40 CFR Part 112
Federal rule requiring a written, site-specific plan for facilities storing oil above the aggregate threshold, with containment sizing, inspection and training specified.
The plan is itself the compliance instrument, and the five-year technical review and material-change amendment are separate duties on top of the annual review cycle.
Control of Pollution (Oil Storage) (England) Regulations 2001, and devolved equivalents
Secondary containment mandated for oil storage above set volumes at non-domestic premises, enforced locally rather than federally.
The sizing expectation is broadly equivalent to SPCC's, but the plan itself is not a statutory document in the same way, so evidential weight sits with the physical bund.
ISO 14001:2015 clause 8.2
Emergency preparedness and response required generically as part of an environmental management system, without prescribing containment sizing.
Auditors expect the prevention plan to exist as evidence the organisation planned for a foreseeable emergency, not merely responded well once one occurred.
How to complete it
How to complete a spill prevention plan, step by step
Most of this plan is arithmetic a template prompts for correctly. What decides whether it holds up is whether a control was tested, not whether it exists.
Drainage isolation is usually the highest-value single control on the plan, and the fields separate whether it is available, whether it is operable under emergency conditions, and whether it has been tested. A plan answering only the first has documented a feature, not a capability, and the gap is where most real failures live.
Bund capacity adequate is a sum, not a judgement call: the largest single container's capacity plus allowance for precipitation, commonly the greater of 110 percent of that container or 25 percent of total inventory. Recording 'yes' without showing the sum leaves the answer undefendable once a tank is added.
Secondary containment on transfers, delivery supervision and overfill protection are one control against one failure mode, an unsupervised transfer, and should be read together. Most large spills happen at the hose connection, not the tank, so an excellent bund with an unsupervised delivery has changed nothing.
Ammonia inventory, above regulatory threshold and major accident regulations apply determine whether a Facility Response Plan or major accident hazard regime attaches to the site. A 'no' recorded without the calculation behind it understates the obligation, and this plan does not itself discharge that separate duty.
What auditors find
Most common spill prevention plan findings
The prevention plan almost always exists on sites storing bulk liquid. The findings concern whether the controls it describes were verified, not just designed.
| Finding | Clause | What fixes it |
|---|---|---|
| Bund capacity assessed as adequate without the containment sizing calculation being shown. | 40 CFR 112.8(c)(2) | Record the largest container's volume and the sizing calculation, not a yes-or-no answer alone. |
| Drainage isolation exists but has never been tested, or is difficult to operate under emergency conditions. | 40 CFR 112.7(e) | Schedule and record isolation tests separately from routine bund inspection; treat a failed test as an action. |
| Delivery and transfer areas lack secondary containment or supervision despite being the highest-frequency exposure. | 40 CFR 112.7(h) | Require supervision for every delivery as a standing condition, and record it rather than assuming it. |
| Spill kit contents do not match the substances actually stored, for example no oil sorbent where hydrocarbons are held. | 40 CFR 112.7(f) | Match kit type to the current substances register at each review, not to a generic kit. |
| Plan not reviewed or amended after a material change, such as a new tank or layout change, ahead of the annual date. | 40 CFR 112.5 | Link the plan to management of change so a change forces review ahead of the calendar interval. |
| Ammonia inventory or major accident threshold questions answered 'no' without a documented basis. | 40 CFR 112.20 | Show the inventory calculation behind every threshold answer, not just the conclusion. |
Case in point
Case in point: the bund that had never been tested
A warehouse holding a diesel generator fuel store and an ammonia refrigeration plant carried a prevention plan showing bunding as 'yes, all storage,' drainage isolation as 'available,' and isolation testing as 'overdue' for two review cycles running. The plan had been re-approved on schedule each year without the overdue test being flagged as more than an administrative gap.
A delivery hose failure during a routine fuel top-up put several hundred litres onto the yard. The valve meant to isolate site drainage had seized open; nobody had operated it since installation, and the overdue test had rolled forward at each review without anyone asking why. Diesel reached the surface water drain and a watercourse within minutes, and the plan had correctly identified the control without ever verifying it worked.
The template
The template, field by field
The form exactly as it installs. Every field, option, score and conditional rule is editable, and the links to other templates come with it.
4 sections
- Reference
- ENV-004
- Archetype
- Plan
- Record ID
- SPP-2026-000
- Scoring
- Not scored
- Direction
- n/a
- Singleton
- No
- Basis
- EPA SPCC 40 CFR 112
- Links
- Links Site, Substance
- Tags
- Environment, Plan
- Sections
- 4
- Fields
- 44
- Follow up fields
- 3
- Repeating sections
- 0
- Links out
- 4
Header
10 fieldsPlan ID*
Auto sequence. Format SPP-2026-000.
The record's own ID. Other templates point at this value.
Status*
Drives who this goes to next.
- Planned2 pts
- In progress2 pts
- Complete3 pts
- Deferred0 pts
- Open0 pts
- Closed3 pts
- Overdue0 pts
Version*
Issue Date*
Next Review Due*
Site*
Site ID*
Format SITE-000.
Links to FDN-001 Site ID
Plan Owner*
Approved By*
Contain It Before It Moves
The cheapest spill is one that never leaves its bund. Everything after that costs orders of magnitude more, especially anything that reaches a watercourse.
Substances and quantities
6 fieldsSubstances Covered*
Largest Single Container*
Total Site Inventory
Ammonia Inventory
Ammonia refrigeration inventories often exceed regulatory thresholds and carry their own reporting duties.
Above Regulatory Threshold*
- No3 pts
- Yes1 pt
Major Accident Regulations Apply*
- No3 pts
- Lower tier1 pt
- Upper tier0 pts
Containment
9 fieldsBunding Provided*
- Yes, all storage3 pts
- Partly1 pt
- No0 pts
Bund Capacity Adequate*
110 percent of the largest container or 25 percent of total, whichever is greater.
- Yes3 pts
- Marginal1 pt
- No0 pts
Bund Integrity Tested*
- Yes3 pts
- Overdue1 pt
- Never0 pts
Secondary Containment On Transfers*
Tanker deliveries and internal transfers are where most large spills happen.
- Yes3 pts
- Partly1 pt
- No0 pts
Delivery Supervision Required*
- Yes, always3 pts
- Sometimes1 pt
- No0 pts
Overfill Protection Fitted*
- Yes3 pts
- Partly1 pt
- No0 pts
Drainage Isolation Available*
A penstock or valve that closes the site drainage is the single most valuable control here.
- Yes3 pts
- Partly1 pt
- No0 pts
Isolation Operable Under Emergency*
- Yes3 pts
- Difficult1 pt
- No0 pts
Isolation Tested*
- Yes3 pts
- Overdue1 pt
- Never0 pts
Response capability
19 fieldsSpill Kits Located By Risk*
- Yes3 pts
- Partly1 pt
- No0 pts
Kit Types Match Substances*
- Yes3 pts
- Partly1 pt
- No0 pts
Kit Inspection Schedule Defined*
- Yes3 pts
- No0 pts
Responders Trained*
- Yes3 pts
- Partly1 pt
- No0 pts
Cover On All Shifts*
- Yes3 pts
- Partly1 pt
- No0 pts
Drill Frequency Defined*
- Yes3 pts
- No0 pts
Notification Procedure Defined*
- Yes3 pts
- No0 pts
Specialist Contractor Identified*
- Yes3 pts
- No0 pts
Site Drainage Plan Attached
Plan Document
Document ID
Format DOC-0000.
Links to FDN-008 Document ID
Action Required*
Raise the action record, then enter its reference here.
- No2 pts
- Yes0 pts
Priority
- High0 pts
- Medium1 pt
- Low3 pts
CAPA ID
Format CAPA-2026-00000.
Links to FDN-014 CAPA ID
Action Owner
Environmental Lead*
Signature*
Site Manager*
Second Signature*
ENV-004 · record IDs look like SPP-2026-000 · Links Site, Substance
Open in KnowellaRun it with agents
From a document you fill in to a programme that runs itself
The plan is the design. What fails is the surrounding machinery, the isolation valve nobody has turned, the delivery that ran unsupervised, and the review that renewed the document without re-checking the arithmetic behind it.
Holds the prevention plan against the substance register and containment inspection history, and flags answers not re-verified since the last material change.
Watches for new tanks, substances or layout changes logged elsewhere and raises the plan for review before the annual date.
Connects drainage isolation and bund integrity testing to the asset maintenance schedule, so 'overdue' produces a work order, not a rolled-forward note.
Links responder training and drill frequency to who is actually rostered on each shift, so cover on all shifts is a checked fact.
This template lives in KnowEnviro — environment and energy. Aspects, permits, waste, emissions, spills and sustainability reporting.
Meet KnowEnviro→Glossary
Spill Prevention Plan definitions and key terms
- Bund / secondary containment
- A physical barrier around bulk storage sized to hold a release from the largest single container plus an allowance for precipitation.
- Freeboard
- The extra containment capacity, above the largest single container's volume, allowed for rainfall accumulating in an open bund.
- SPCC threshold
- The aggregate above-ground oil storage capacity at which SPCC requires a written, site-specific prevention plan.
- Substantial harm facility
- A facility whose storage or location crosses the criteria triggering the separate, more detailed Facility Response Plan obligation.
- Major accident hazard tiering
- The lower- or upper-tier classification applied once a site's hazardous substance inventory crosses set threshold quantities.
FAQ
Frequently asked questions about spill prevention plan
Does a spill prevention plan replace a spill response plan?+
No. The prevention plan is the proactive design, written before anything happens. The response record is the reactive log of what was actually done during a real spill. A site needs both, and an auditor asks about each separately.
How is bund capacity actually calculated?+
As the greater of 110 percent of the largest single container's capacity, or 25 percent of total volume stored in that area, with room left for precipitation. A plan recording 'yes' without this arithmetic has not shown its working.
Who has to approve the plan?+
SPCC requires management commitment and, depending on facility qualification, self-certification or certification by a professional engineer. Here that shows as Plan Owner, Approved By and the site manager's signature, and all three should reflect people who reviewed the sizing.
What triggers an out-of-cycle review?+
A new tank, substance, layout or transfer arrangement, or anything changing the containment or response capability described. The annual interval is a backstop for unflagged change, not the primary trigger.
Does this plan cover chemical spills as well as oil?+
SPCC itself is oil-specific. Where a site also holds ammonia or other hazardous substances above threshold, those inventories can trigger a separate major accident regime that this plan flags but does not discharge.
What is the single most commonly missed control?+
Drainage isolation testing. The valve is usually present and described as available; whether it has been operated under conditions resembling an emergency is the question most plans never answer.
Keep going
Related templates and programmes
Industries this is written for
Programmes this belongs to
Used together in Spill and Pollution Prevention
Spill Report
Records a release of chemical, fuel, oil or wastewater
Spill Response Record
Records what was done to contain, clean up and dispose of a spill
Environmental Notification Record
Records what was reported to an environmental regulator, when and by whom
Containment Inspection
Checks bunds, drip trays, drains and interceptors are intact and not full
Drain Register
Records every drain on site, where it goes and what may enter it
Stormwater Outfall Inspection
Checks stormwater discharge points for sheen, colour, odour and debris
More in Spills
Spill Report
Records a release of chemical, fuel, oil or wastewater
Spill Response Record
Records what was done to contain, clean up and dispose of a spill
Environmental Notification Record
Records what was reported to an environmental regulator, when and by whom
Containment Inspection
Checks bunds, drip trays, drains and interceptors are intact and not full
Drain Register
Records every drain on site, where it goes and what may enter it
Written and reviewed by
Siddarth Singh
Founder & Chief Executive Officer, Knowella
Certified Safety Professional and industrial and systems engineer with more than a decade inside food supply chain, freight and manufacturing operations. This page was written against the current text of the standards it cites, not against secondary summaries of them.
- Certified Safety Professional (CSP), Board of Certified Safety Professionals
- MBA, University of Chicago Booth School of Business
- MS and BS, The Ohio State University, Industrial and Systems Engineering
- Six Sigma Black Belt
Sources and last review. Reviewed 16 August 2026 against:
- 40 CFR Part 112 — Oil Pollution Prevention (SPCC Rule)
- EPA SPCC Plan guidance and facility qualification criteria
- Control of Pollution (Oil Storage) (England) Regulations 2001
- ISO 14001:2015 clause 8.2, Emergency preparedness and response
This page is general guidance, not legal advice. Confirm requirements with your jurisdiction’s regulator.