TL;DR
- Zenith Energy Terminals Holdings LLC admitted to violating federal air quality standards at its Portland, Oregon facility by failing to maintain critical pollution seals on the so called Tank 106.
- Inspections spanning five years revealed torn secondary seals and gaps three times the legal limit, allowing volatile petroleum vapors to escape unchecked.
- Zenith ignored contractor recommendations to replace the damaged seal for over four years before finally acting in February 2025.
- OurEPA Region 10 assessed a civil penalty of $437,729, which Zenith agreed to pay within 30 days of the order’s effective date.
The violation persisted through five consecutive annual inspections while the company paid contractors to document the decay without fixing it.
The Facts
Zenith Energy Terminals Holdings LLC operates a petroleum storage terminal at 5501 NW Front Avenue in Portland, Oregon. This facility is subject to strict federal regulations under the Clean Air Act designed to prevent the release of hazardous air pollutants from storage tanks.
- The facility contains Tank 106, a storage vessel equipped with an external floating roof designed to minimize vapor emissions.
- Federal law requires these tanks to have both primary and secondary seals that remain intact and free of gaps larger than 0.5 inches.
- EPA inspectors conducted compliance evaluations at the site on June 25, 2024, and December 4, 2024.
- The Consent Agreement was filed under Docket No. CAA-10-2026-0118 with the EPA Region 10 Enforcement and Compliance Assurance Division.
The Misconduct
For years, Zenith Energy allowed known defects in its pollution control equipment to fester, turning routine maintenance failures into a long-term public health hazard.
- Contractor inspections in 2019, 2020, 2021, 2022, and 2023 repeatedly documented that the secondary seal on Tank 106 was inverted and torn.
- During the October 24, 2022 inspection alone, inspectors measured a gap of 1.5 inches between the seal and the tank wall, exceeding the regulatory limit by 200%.
- Despite written recommendations in 2021, 2022, and 2023 to “completely replace the secondary seal,” Zenith took no action until February 2025.
- The company continued to operate the tank with compromised seals for more than five years after the initial discovery of the damage.
Timeline of Neglect: 2019–2025
Legal Receipts
“Following the 2021, 2022, and 2023 inspections, the inspector also recommended ‘completely replacing the secondary seal.'”
- This admission confirms that professional inspectors explicitly identified the need for a total replacement three separate times.
- The company chose to ignore these direct safety recommendations for over two years.
“During the October 24, 2022 inspection, the inspector observed a gap of 1.5 inches, or three times the regulatory limit.”
- The violation was not minor or borderline; the physical gap was triple the maximum allowable size.
- This level of degradation indicates severe structural failure of the pollution control system.
“Respondent neither admits nor denies the specific factual allegations contained in this Consent Agreement.”
- Zenith avoided a formal admission of guilt while still agreeing to pay the penalty.
- This is a common tactic to avoid setting legal precedents for future lawsuits while settling administrative fines.
“In any collection action, the validity, amount, and appropriateness of the Assessed Penalty shall not be subject to review.”
- By signing the agreement, Zenith waived its right to challenge the fine amount in court if it failed to pay.
- The company locked itself into a binding financial obligation without judicial oversight of the penalty calculation.
Profit-Maximization at All Costs
The decision to delay repairs for five years despite repeated warnings suggests a calculated choice to prioritize operational continuity over regulatory compliance and community safety.
- Repairing a floating roof seal involves significant downtime and labor costs, likely prompting management to defer the expense.
- The company continued to store petroleum liquids in a tank with known, severe leaks, effectively externalizing the cost of air pollution to the surrounding Portland community.
- Only after facing formal EPA enforcement action did the company commit to resolving the issue in February 2025.
The Cost of Non-Compliance
What a Legitimate Fix Looks Like
The systemic failure here was not just a broken seal, but a broken incentive structure where ignoring safety warnings remained profitable until federal intervention occurred.
Regulatory Track
- The EPA must mandate third-party, unannounced audits for all floating roof tanks in the Pacific Northwest, removing the ability for companies to self-report or schedule inspections around known defects.
- Penalties must be escalated to include daily accumulation from the date of the first failed inspection, not just the date of the final settlement, to eliminate the financial benefit of delay.
- Regional enforcement offices should require immediate shutdown orders for tanks exceeding 150% of the allowable gap limit, rather than issuing notices of violation that allow continued operation.
Legislative Track
- State legislatures should pass laws requiring “pollution control integrity bonds” for industrial storage facilities, ensuring funds are available for emergency repairs if the operator delays.
- Amend the Clean Air Act to remove the “neither admit nor deny” loophole for repeat violators, forcing public acknowledgment of fault to deter future negligence.
Corporate Governance Track
- Executive compensation packages at Zenith Energy must be tied directly to environmental compliance metrics, with clawback provisions for fines resulting from deferred maintenance.
- Boards of directors must establish independent safety committees with veto power over capital expenditure decisions that prioritize profit over mandated pollution controls.
What Now?
Community members in North Portland must demand transparency regarding air quality data near the Zenith terminal and push for stricter local enforcement.
- Watchlist: Monitor EPA Region 10 and the Oregon Department of Environmental Quality (DEQ) for follow-up inspections of Tank 106.
- Watchlist: Track the payment of the $437,729 penalty to ensure it is received by the Cincinnati Finance Division within the 30-day window.
- Organize: Local groups should request public meetings with Zenith Energy management to demand a full disclosure of all other tanks in the facility that may have similar seal issues.
- Mutual Aid: Support neighborhood air monitoring initiatives to independently verify vapor levels during periods of high wind or tank operations.
The source document for this investigation is attached below.
Explore by category
02
Product Safety Violations
When companies sell dangerous goods, consumers pay the price.
View Cases →
06
Financial Fraud & Corruption
Lies, scams, and executive impunity that distort markets.
View Cases →
