If your marina stores 1,320 gallons or more of oil — and "oil" includes diesel, gasoline, motor oil, hydraulic fluid, used oil, and lubricants — federal law requires you to have an EPA-compliant Spill Prevention, Control, and Countermeasure (SPCC) plan. Most marina operators have one piece of paper from 2009 in a binder and assume they're compliant. They're usually not.
This is the practical guide: when SPCC applies, what tier of plan you need, what an EPA inspector actually checks, and how to keep your plan current without burning a week every year.
SPCC plans for Tier II and III facilities must be certified by a licensed Professional Engineer (PE). Use this as orientation, not as a replacement for a marine engineer's deliverable.
- SPCC applies if you have ≥1,320 gallons aggregate oil storage (above ground) OR ≥42,000 gallons below ground.
- There are three tiers: SPCC Tier I (self-certified, ≤10,000 gal, no history of spills), Tier II (self-certified, ≤10,000 gal with some history), Tier III (PE-certified, >10,000 gal or hazardous areas).
- Most fuel-dock marinas exceed the threshold easily — diesel + gasoline + used oil + hydraulic fluid for lifts adds up fast.
- EPA inspections happen randomly; you have 7 calendar days to produce the plan and supporting records.
- Annual plan review is required even if nothing changes. Most violations are documentation, not actual spills.
#The 1,320-gallon threshold math
Take stock of every container with capacity ≥55 gallons (smaller drums don't count) and add them up. Common marina inventory:
- 1Above-ground gasoline tank — usually 4,000–10,000 gal.
- 2Above-ground diesel tank — usually 6,000–20,000 gal.
- 3Used-oil collection tank — 250–550 gal.
- 4Hydraulic fluid for travel-lift — 100–500 gal.
- 5Engine oil storage in service shop — 55–550 gal.
- 6Bottom-paint thinners (if applicable to your operation).
A small marina with just a 4,000-gallon gasoline tank already qualifies. A medium marina with diesel + gas + lift hydraulic + used oil typically lands at 12,000–25,000 gallons. Most operators don't realize they're over the threshold until they tally it up.
#The three tiers — which one applies to you?
EPA divides SPCC facilities into three tiers based on storage volume and history.
#Tier I — Self-certified, simplified plan
- Aggregate above-ground storage ≤10,000 gallons.
- No oil spill of >1,000 gallons in past 3 years.
- No two spills of >42 gallons each in past 12 months.
- Owner / operator can self-certify the plan using EPA's Tier I template.
#Tier II — Self-certified, full plan
- Aggregate above-ground storage ≤10,000 gallons.
- Doesn't qualify for Tier I (had a qualifying spill in the past 3 years).
- Operator self-certifies, but plan must address full 40 CFR §112 requirements.
#Tier III — PE-certified
- Aggregate above-ground storage >10,000 gallons OR in environmentally sensitive area.
- Plan must be certified by a licensed Professional Engineer.
- Most fuel-dock marinas are here.
Misclassifying your facility — for example, self-certifying a Tier III plan — is itself a violation, on top of any other findings. When in doubt, get a marine engineer to confirm.
#What goes in the plan
A complete SPCC plan addresses these areas (drawn from 40 CFR §112.7):
- 1Facility description and oil storage inventory (tanks, drums, containers).
- 2Site diagram showing tank locations, drainage paths, and waterway proximity.
- 3Secondary containment specifications (berms, dikes, double-walled tanks).
- 4Discharge prevention measures (overfill alarms, transfer procedures, vehicle barriers).
- 5Inspection schedules and recordkeeping (monthly visual, quarterly integrity, annual review).
- 6Personnel training program (annual minimum for anyone handling oil).
- 7Security measures (locked tank caps, lit dispensing areas, fenced storage).
- 8Spill response procedures (who, what, how, who to call).
- 9Discharge reporting and recordkeeping templates.
Marine OS auto-generates SPCC supporting records
Pump-out logs, used-oil tracking, spill kit inventory, inspection checklists — all auto-generated from your daily operations. Your engineer still writes the plan; we handle the documentation that proves you're executing it.
#What an EPA inspector actually checks
Federal inspections are rare (estimated <1% of SPCC-covered marinas inspected per year), but state-delegated inspections and post-spill inspections are common. When they show up, here's the order:
- 1Ask to see the current SPCC plan — physical or electronic, must be produced within 7 days.
- 2Verify PE certification stamp if Tier III.
- 3Walk the facility comparing what they see to the plan's site diagram.
- 4Check secondary containment integrity — visible cracks, drain valves left open, debris.
- 5Spot-check tank inspection logs (monthly visual, quarterly integrity).
- 6Verify training records for current employees.
- 7Review spill response equipment — kit inventory, absorbent boom, contact lists.
- 8Ask about any spills in the past 3 years and the corresponding response records.
The hardest part of EPA SPCC compliance isn't the rules — it's proving you followed them. A spotless yard means nothing if your inspection log has a 6-month gap.
#Common SPCC violations
- Plan exists but hasn't been reviewed in >5 years (must review every 5 years minimum).
- Plan not updated after facility changes (new tanks, ownership change, repaved containment).
- Monthly visual inspections undocumented (just because you walked the yard doesn't mean it counts).
- No training records for current staff.
- Spill response kit short on absorbents or expired.
- Containment drain valves left open during inspections (you'd be amazed).
- PE certification expired (engineer let their license lapse, plan must be re-certified).
#Annual maintenance — the boring part that matters
Most violations come from sloppy ongoing execution, not the plan itself. The marinas that pass inspection consistently treat SPCC as monthly hygiene:
- 1Monthly visual inspection of all oil storage areas, signed and dated.
- 2Quarterly integrity inspection of tanks and containment (more detailed, may require qualified personnel).
- 3Annual personnel training session with sign-in sheet.
- 4Annual review of the plan itself — is the inventory still current? Have we added tanks?
- 5Five-year full plan re-certification (PE-required for Tier III).
- 6Within 24 hours of any spill: response per plan + EPA notification if discharge reaches navigable water.
Our compliance module generates monthly inspection forms (mobile-fillable, signed and dated), tracks training attendance, alerts on 5-year plan expiration, and exports the full SPCC documentation packet as a single PDF for inspectors. We do not write the plan itself; that's a PE deliverable.
#How much does this cost?
Realistic numbers for a typical 200-slip US marina with fuel dock:
- Initial PE-certified plan (Tier III): $2,500–$6,500 depending on facility complexity.
- Annual review (if no PE re-cert needed): self-managed or $300–$800 consultant time.
- 5-year full re-certification: $1,500–$4,000.
- Annual training (in-house or third-party): $400–$1,200/year.
- Spill response kit maintenance: $300–$800/year.
- Containment repairs / improvements: variable, but budget $2K/year reserve.
Total annual compliance cost: roughly $1,500–$4,000/year. Compared to a single non-compliance penalty ($56,400 per day max), the math is obvious.
Marine OS's compliance suite handles SPCC documentation
Monthly inspections, training records, 5-year alerts, single-PDF inspector packet. Live in a 30-min demo.
Frequently asked questions
Nayan Patel
Founder, Marine OS
Nayan is the founder of Marine OS, modern marina management software currently in early access with US marina operators. He writes about marina operations, technology, and the economics of running a marina business. This is not legal advice — talk to a licensed marine engineer for your specific plan.
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