4.2 Spill Prevention, Control, and Countermeasure (SPCC) & Facility Response Plans
Key Takeaways
- Under Clean Water Act Section 311 and 40 CFR Part 112, an SPCC Plan is mandatory if a non-transportation facility has aggregate aboveground oil storage capacity > 1,320 gallons (containers ≥ 55 gal) or buried storage > 42,000 gallons, covering petroleum, synthetics, animal fats, and vegetable oils.
- Facilities are categorized into three regulatory tiers: Tier I Qualified (≤ 10,000 gal total, no container > 5,000 gal, clean spill history; self-certified via Appendix G template), Tier II Qualified (≤ 10,000 gal total, has container > 5,000 gal, clean spill history; self-certified customized plan), and Non-Qualified (> 10,000 gal total or spill history, requiring Professional Engineer [PE] certification).
- Sized secondary containment for bulk storage containers must hold the largest single container plus sufficient freeboard for precipitation using the SPCC Plan's documented site-specific design basis; neither 110% nor a 25-year storm is a universal federal minimum.
- SPCC Plans must undergo a comprehensive facility review at least every 5 years and must be amended within 6 months of material facility changes (with PE certification completed within 6 months of amendment for non-qualified sites).
- Facility Response Plans (FRP, 40 CFR § 112.20) are mandatory for facilities posing 'substantial harm,' including those conducting over-water oil transfers with ≥ 42,000 gal storage, or having ≥ 1,000,000 gal storage and lacking secondary containment or situated near sensitive drinking water/wildlife resources.
Spill Prevention, Control, and Countermeasure (SPCC) & Facility Response Plans
The discharge of oil into navigable waters of the United States and adjoining shorelines threatens aquatic ecosystems, municipal drinking water intakes, and coastal commerce. Under Section 311(j)(1)(C) of the Clean Water Act (CWA), the Environmental Protection Agency promulgated the Spill Prevention, Control, and Countermeasure (SPCC) regulation under 40 CFR Part 112.
While OSHA and RCRA focus primarily on toxic chemicals and hazardous wastes, SPCC focuses specifically on oil in all its forms. Certified Hazardous Materials Managers (CHMMs) are frequently responsible for determining SPCC applicability, calculating aggregate shell capacities, designing secondary containment systems, managing 5-year review cycles, and determining whether a facility triggers the stringent Facility Response Plan (FRP) requirements for "substantial harm" facilities.
1. Statutory Scope & SPCC Applicability Thresholds (40 CFR § 112.1)
An onshore or offshore non-transportation-related facility is subject to SPCC requirements if it meets two concurrent statutory criteria:
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| SPCC APPLICABILITY ALGORITHM |
| |
| CRITERION 1: OIL STORAGE CAPACITY THRESHOLD |
| - Aggregate Aboveground Storage Capacity > 1,320 U.S. Gallons |
| (Count ONLY containers with a shell capacity ≥ 55 U.S. gallons) |
| -- OR -- |
| - Completely Buried Underground Storage Capacity > 42,000 U.S. Gallons |
| (Excluding USTs regulated and compliant under 40 CFR Part 280) |
| + |
| CRITERION 2: REASONABLE EXPECTATION OF DISCHARGE |
| - Facility could reasonably be expected to discharge oil in harmful |
| quantities (causing a sheen, sludge, or emulsion) into or upon the |
| Navigable Waters of the United States or adjoining shorelines. |
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The Broad Statutory Definition of "Oil" (40 CFR § 112.2)
Under 40 CFR § 112.2, "oil" is defined without limitation as:
"Oil of any kind or in any form, including, but not limited to: petroleum, fuel oil, sludge, oil refuse, and oil mixed with wastes other than dredged spoil and fats, oils, or greases of animal, fish, or marine mammal origin; vegetable oils, including oils from seeds, nuts, fruits, or kernels; and other non-petroleum oils and synthetic oils."
This broad definition means SPCC covers diesel fuel, gasoline, hydraulic fluid, motor oil, transformer mineral oil, cutting fluids, food-grade soybean oil, peanut oil, animal tallow, synthetic lubricants, and waste oil.
Storage Capacity Counting Rules & Common Calculation Traps:
- Shell Capacity Controls: Applicability is based strictly on the total manufactured shell capacity of the container, not the actual liquid volume stored within it. A 500-gallon tank containing only 10 gallons of diesel is counted as 500 gallons.
- The 55-Gallon Cutoff: Count all containers, drums, tanks, intermediate bulk containers (IBC totes), mobile refuelers, and oil-filled operational equipment (e.g., transformers, hydraulic reservoirs) with a capacity of 55 gallons or greater. Completely ignore containers with capacity $< 55\text{ gallons}$ (e.g., 5-gallon pails, 1-quart bottles).
- Exclusions: Permanently closed containers, motive power tanks on motor vehicles/aircraft (fuel tanks running the engine), and wastewater treatment tanks (oil/water separators actively treating wastewater under NPDES) are exempt from capacity aggregation.
- Navigable Waters Determination: When determining the "reasonable expectation of discharge," the facility must not consider manmade features such as containment dikes, retaining walls, berms, retention ponds, or emergency response actions. The determination must be based solely on site topography, soil permeability, hydrology, drainage ditches, storm sewers, and proximity to creeks, rivers, lakes, wetlands, or ditches leading to surface waters.
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WORKED CALCULATION: SPCC APPLICABILITY DETERMINATION
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An industrial facility maintains the following oil inventory on site:
• Tank A: 1,000-gallon AST storing No. 2 fuel oil (currently holds 400 gal)
• Drum Area: Eight (8) 55-gallon drums of hydraulic fluid
• Maintenance: Ten (10) 5-gallon pails of lubricating oil
• Fleet Shop: One (1) 250-gallon waste oil storage tank
• Substation: One (1) 300-gallon oil-filled electrical transformer
• Vehicle Fleet: Four (4) delivery trucks with 50-gallon diesel fuel tanks
CALCULATION:
1. Tank A (shell capacity): 1,000 gal (Counted)
2. 8 x 55-gal drums (≥ 55 gal): 440 gal (Counted)
3. 10 x 5-gal pails (< 55 gal): 0 gal (EXCLUDED)
4. Waste oil tank (shell capacity): 250 gal (Counted)
5. Transformer (oil-filled operational equipment): 300 gal (Counted)
6. Truck fuel tanks (motive power tanks): 0 gal (EXCLUDED)
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TOTAL AGGREGATE SPCC CAPACITY = 1,000 + 440 + 250 + 300 = 1,990 Gallons
CONCLUSION: Since 1,990 gal > 1,320 gal and storm drains connect to an adjacent
stream, SPCC APPLIES. (A full SPCC Plan is legally mandated).
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2. Facility Tier Classification & Certification Framework
To reduce compliance burdens for smaller facilities while maintaining environmental protection, the EPA establishes a three-tier classification system:
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| SPCC FACILITY TIER CLASSIFICATION MATRIX |
| |
| FACILITY TIER | ELIGIBILITY CRITERIA | CERTIFICATION PATHWAY |
| -------------------+--------------------------------------------+---------------------------- |
| TIER I QUALIFIED | - Total aboveground storage ≤ 10,000 gal. | - Self-Certified using EPA |
| FACILITY | - No individual container > 5,000 gal. | Appendix G Model Plan |
| | - Clean spill history in prior 3 years.* | Template (No PE needed). |
| -------------------+--------------------------------------------+---------------------------- |
| TIER II QUALIFIED | - Total aboveground storage ≤ 10,000 gal. | - Self-Certified Full Plan |
| FACILITY | - Has an individual container > 5,000 gal. | (Non-template format, |
| | - Clean spill history in prior 3 years.* | No PE certification). |
| -------------------+--------------------------------------------+---------------------------- |
| NON-QUALIFIED / | - Total aboveground storage > 10,000 gal, | - Mandatory review and |
| STANDARD FACILITY | -- OR -- | formal certification by |
| | - Disqualified by spill history.* | a licensed Professional |
| | | Engineer (PE). |
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[!NOTE] Clean Spill History Criterion: To qualify as a Tier I or Tier II Qualified Facility, the facility must have had no single discharge of oil to navigable waters exceeding 1,000 U.S. gallons, and no two discharges of oil exceeding 42 U.S. gallons in any 12-month period, during the three (3) years prior to plan certification.
Professional Engineer (PE) Certification Requirements (40 CFR § 112.3(d))
For Non-Qualified facilities (or qualified facilities utilizing environmental equivalence or secondary containment impracticability determinations), a licensed PE must attest that:
- The engineer or an agent is familiar with the requirements of 40 CFR Part 112.
- The facility has been visited and examined by the engineer or agent.
- The plan has been prepared in accordance with good engineering practices, including consideration of relevant industry standards.
- Procedures for required inspections and testing have been established.
- The plan is adequate for the facility.
3. Secondary Containment Engineering Standards (40 CFR § 112.7 & § 112.8)
Secondary containment is the foundational engineering control of the SPCC rule. EPA distinguishes between General Secondary Containment and Sized Secondary Containment:
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| SECONDARY CONTAINMENT CLASSIFICATIONS |
| |
| [GENERAL SECONDARY CONTAINMENT - 40 CFR § 112.7(c)] |
| - Applies to: Loading/unloading areas, piping, mobile refuelers, drums. |
| - Standard: Capable of containing the most likely quantity of oil |
| released until response can occur (e.g., drip pans, curbing, sorbents). |
| |
| [SIZED SECONDARY CONTAINMENT - 40 CFR § 112.8(c)(2)] |
| - Applies to: All Bulk Storage Containers (ASTs, tanks, drum storage pads).|
| - Standard: Must hold 100% capacity of the largest single container PLUS |
| sufficient freeboard for precipitation; the federal rule does not prescribe one universal storm recurrence or percentage. |
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Sized Containment Freeboard Calculations:
For an outdoor diked area, begin with: The SPCC rule requires sufficient freeboard but does not set a universal 110% rule or 25-year, 24-hour storm. The PE-certified plan or qualified-facility plan must document a site-specific basis. State rules or sound engineering practice may select a percentage allowance or a local design storm, with displacement by other tanks and structures included.
Diked Area Drainage Operational Protocols (40 CFR § 112.8(c)(3)):
- Drainage of uncontaminated rainwater from diked areas into storm sewers or surface waters is permitted only if:
- The bypass drainage valve is kept normally closed and sealed/locked under administrative control.
- The retained water is visually inspected prior to opening the valve to ensure no oil sheen, discoloration, or sludge is present.
- The discharge is actively monitored and documented in an SPCC drainage log recording date, volume discharged, inspector name, and visual observations.
4. Plan Review, Amendments & Spill Reporting Schedules
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| SPCC TIMELINES & COMPLIANCE CYCLES |
| |
| [5-YEAR MANDATORY REVIEW - 40 CFR § 112.5(b)] |
| - Comprehensive facility review must be completed every 5 calendar years. |
| - Plan must be updated with new engineering/spill techniques if required. |
| - Document completion in the Plan log: 'I have completed review...' |
| |
| [6-MONTH FACILITY MODIFICATION AMENDMENT - 40 CFR § 112.5(a)] |
| - If a material change occurs (adding/replacing tanks, modifying piping, |
| changing secondary containment), the Plan must be amended within |
| 6 MONTHS of the change. |
| - PE Certification of technical amendments must occur within 6 months. |
| - Implementation of physical changes must occur within 6 months after. |
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SPCC Spill Reporting to EPA Regional Administrator (40 CFR § 112.4)
If a facility experiences either of the following spill events to navigable waters, it must submit a comprehensive written report to the EPA Regional Administrator (RA) within 60 days:
- A single oil discharge exceeding 1,000 U.S. gallons in a single event.
- Two oil discharges each exceeding 42 U.S. gallons occurring within any twelve (12) month period.
(Note: This is separate from the immediate notification required to the National Response Center under CWA § 311 for any sheen on water).
5. Facility Response Plans (FRP) & "Substantial Harm" Criteria (40 CFR § 112.20)
While SPCC plans focus on spill prevention and small-scale containment, the Facility Response Plan (FRP) regulation under 40 CFR § 112.20 requires high-risk facilities to prepare detailed response plans and maintain commercial contracts for responding to a worst-case catastrophic discharge.
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| FRP "SUBSTANTIAL HARM" DECISION CRITERIA |
| |
| A facility is deemed to pose SUBSTANTIAL HARM and must submit an FRP if it meets |
| EITHER of the following two statutory pathways: |
| |
| PATHWAY 1: OVER-WATER TRANSFER FACILITIES |
| - The facility transfers oil over water to or from vessels; AND |
| - Has a total oil storage capacity ≥ 42,000 U.S. gallons. |
| |
| PATHWAY 2: LARGE BULK STORAGE FACILITIES (≥ 1,000,000 Gallons) |
| - The facility has a total oil storage capacity ≥ 1,000,000 U.S. gallons; AND meets |
| ANY ONE of the following four risk triggers: |
| [a] Lacks adequate secondary containment for each aboveground storage area. |
| [b] Is located at a distance such that a discharge could cause injury to fish and |
| wildlife and sensitive environments (calculated via EPA formula). |
| [c] Is located at a distance such that a discharge would shut down a public |
| drinking water intake. |
| [d] Has experienced a reportable oil spill ≥ 10,000 gallons in the past 5 years. |
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FRP Preparedness for Response Exercise Program (PREP)
Facilities subject to FRP must establish an Incident Command Structure, identify a designated Qualified Individual (QI) with full authority to obligate funds, contract with an approved Oil Spill Removal Organization (OSRO), and conduct mandatory PREP drills:
- Qualified Individual (QI) Notification Drills: Conducted quarterly.
- Spill Management Team (SMT) Tabletop Exercises: Conducted annually.
- Facility-Owned Equipment Deployment Drills: Conducted semi-annually (every 6 months).
- Unannounced EPA/USCG Drills: Conducted periodically.
An environmental coordinator audits a light manufacturing site and inventories the following oil vessels: two 500-gallon ASTs of diesel fuel, twenty 55-gallon drums of mineral oil, thirty 5-gallon pails of cutting oil, and one 100-gallon hydraulic reservoir on an operating stamping press. Storm drains on the property discharge directly to an adjacent creek. What is the facility's aggregate storage capacity for SPCC applicability, and is an SPCC Plan required?
A metal fabrication plant has a total aboveground oil storage capacity of 8,500 gallons, consisting of one 6,000-gallon bulk diesel AST and five 500-gallon lubricant tanks. The site has had zero oil spills in its history. How should this facility be classified under the SPCC tiers, and what certification is required?
An industrial facility completes installation of a new 10,000-gallon aboveground fuel oil storage tank and replaces an adjacent secondary containment dike on March 1. Under 40 CFR § 112.5, what are the mandatory regulatory deadlines for amending the SPCC Plan, obtaining PE certification, and implementing the physical operational changes?
A petroleum bulk distribution terminal stores 1,500,000 gallons of refined gasoline and diesel fuel in multiple field-erected ASTs. The terminal is located 1/4 mile upstream from a municipal drinking water intake on a major river. All tanks have certified secondary containment dikes. Which regulatory requirement applies to this facility under Clean Water Act 40 CFR § 112.20?