Wilmington, Delaware  |  EPA Enforcement  |  Underground Storage Tanks  |  September 2025

Gasoline Leak Alarm Rang for 13 Days. Nobody Called.

A Delaware BP operator let a suspected gasoline release go unreported and uninvestigated for almost two weeks. The EPA had to show up in person to make anyone care.

For 13 consecutive days, an alarm warned of a possible gasoline leak beneath a Wilmington, Delaware BP station. YOK, LLC, the company operating the facility, never once called the state or investigated the cause.

The Alarm They Chose to Ignore

The Southbridge BP at 201 South Herald Street in Wilmington, Delaware sits atop four underground storage tanks holding regular gasoline, premium, diesel, and kerosene. Together those tanks hold up to 26,000 gallons of fuel. When something goes wrong in a system like that, alarms exist for a reason: petroleum in the ground means poison in the water.

On April 18, 2024, the liquid sensor inside the sump of Tank 13, the regular gasoline tank, triggered an alarm. That alarm means the system detected something it was not supposed to find: liquid where there should be none, a potential sign of a release into the surrounding environment. State law required YOK to report this to Delaware’s Department of Natural Resources and Environmental Control within 24 hours. State law also required them to start an investigation within 24 hours.

YOK did neither. The alarm continued blaring. Days passed. Then a week. Then almost two weeks. When EPA Inspector Nicole Okino arrived for a scheduled Compliance Evaluation Inspection on April 25, 2024, seven days after the alarm first went off, the sensor was still in alarm. The facility had made no report and taken no investigative action. The alarm was not resolved until May 1, 2024, when someone finally had water pumped out of the sump. The total silence stretched 13 days.

The Pattern Behind the Single Alarm

The April 2024 alarm was the most urgent violation the EPA found, but the inspection records told a longer story. YOK had a legal obligation to monitor all four underground tanks for leaks at least once every 30 days. The documents show they blew that deadline eight times between December 2022 and April 2024, sometimes by a few weeks, once by an astonishing 91 days.

On top of that, YOK failed to conduct the required monthly walkthrough inspection of the physical facility, including dispensers, sumps, and containment equipment, on multiple occasions. This was the safety net that was supposed to catch problems before they became environmental emergencies. It was skipped repeatedly.

The EPA levied a civil penalty of $50,672 ($50,672 is roughly equivalent to a full year of rent and groceries for one working-class family). The case resolved when YOK signed a consent agreement, paid the fine, and the matter closed without any formal admission of wrongdoing.

The Non-Financial Ledger

Every gallon of gasoline stored underground represents a slow-motion threat to the neighborhood above it. The Southbridge BP sits in Wilmington’s Southbridge community, a predominantly working-class area of the city. The people living closest to that intersection are people who generally cannot afford to move when contamination warnings come, cannot afford private well testing, and cannot afford the lawyers that would be needed to fight a major oil company or its operator in court. The regulatory system exists specifically because those people have no other backstop.

That backstop requires speed. Delaware law does not give operators a week to think about an alarm. It gives them 24 hours. The reason for that window is simple: the faster a suspected release is reported and investigated, the less fuel reaches the soil, the groundwater, and ultimately the taps of nearby residents. Every day of silence after that 24-hour deadline is a day of additional potential exposure. YOK let 12 of those days expire without a single phone call.

The documentation tells a story of institutional negligence, repeated over time. This was not a one-time missed deadline. The monitoring records from December 2022 through April 2024 show eight separate instances where the mandatory monthly check was skipped or drastically delayed. The worst gap was 91 days, three full months, between checks on a tank system holding thousands of gallons of petroleum. That is not a paperwork error. That is a sustained, documented choice to treat regulatory compliance as optional.

What the consent agreement cannot measure is the psychic cost of living near a facility that treats its safety systems as suggestions. Residents near the Southbridge BP had no way of knowing whether their neighborhood’s groundwater had been compromised during those months when no one was watching. They had no way of knowing an alarm was going off for 13 days in the spring of 2024. They found out, if they found out at all, because a federal agency had to step in and do the job the operator refused to do. That erosion of trust in the institutions and businesses that share a community’s environment is its own injury, and it does not come with a settlement check.

Legal Receipts: The Document Speaks

“At the time of the inspection, the liquid sensor (a release detection device) L1 of Tank 13 sump (regular) was in alarm.” EPA Consent Agreement, Paragraph 26 — describing what the inspector found on April 25, 2024

“ATG detection monitoring printouts provided by the Facility indicated that the alarm was initially activated on April 18, 2024. As of the date of the inspection, seven (7) days after the alarm began, the Facility had not reported the alarm to the State of Delaware, nor had the Facility investigated the alarm.” EPA Consent Agreement, Paragraphs 27–28 — the paper trail YOK handed over that confirmed their own inaction

“From April 19, 2024, through May 1, 2024, a total of thirteen (13) days, the Facility failed to investigate and report a suspected release and/or unusual operating condition.” EPA Consent Agreement, Paragraph 30 — the official count of days YOK ignored the alarm

“Facility records show that Respondent failed to conduct monitoring on all four (4) tanks more than thirty (30) days since the prior testing on the following dates: [December 15, 2022 (42 days late); March 12, 2023 (57 days late); April 25, 2023 (14 days late); June 15, 2023 (21 days late); July 24, 2023 (10 days late); November 22, 2023 (91 days late); January 31, 2024 (41 days late); and April 25, 2024 (55 days late)].” EPA Consent Agreement, Paragraph 39 — eight separate violations of the monthly monitoring requirement, spanning 18 months

“Unusual operating conditions include ‘a signal or alarm from any Release Detection device…'” EPA Consent Agreement, Paragraph 25 — citing Delaware state regulation 7 Del. Admin. C. § 1351-E-1.1.2.3, defining exactly what YOK was required to report

Societal Impact Mapping

Underground storage tanks contain one of the most mobile forms of contamination known to environmental science. Gasoline and its component chemicals, including benzene, toluene, ethylbenzene, and xylene, collectively known as BTEX compounds, are highly soluble in water and travel fast through soil. A release from a tank does not stay put. It migrates toward the water table, toward storm drains, toward creek beds. The entire regulatory framework governing tanks like those at Southbridge BP exists because the consequences of a slow, undetected leak can last decades and cost tens of millions of dollars to clean up.

The alarm on Tank 13’s regular gasoline sump was a signal that liquid was present where it should not be. Whether that liquid was water intrusion or actual product release was never determined by YOK during those 13 days because they never investigated. The EPA’s consent agreement notes the alarm was resolved by removing water from the sump on May 1, 2024, which suggests water intrusion was the proximate cause in this instance. But the point of the regulatory system is that the operator is not supposed to assume. They are supposed to find out immediately, precisely because the cost of being wrong is contamination that cannot be un-done.

The pattern of missed monthly monitoring checks compounds this concern significantly. Eight gaps in the monitoring record over 18 months means there were extended windows where a small, slow leak could have gone undetected. The monitoring system is specifically designed to catch releases that are too small to trigger an immediate alarm. Skipping it 91 days in a row in November 2023 left a meaningful blind spot in the facility’s environmental safety profile.

Wilmington, Delaware is one of the poorest cities in the United States by household income. Its Southbridge neighborhood sits near the Christina River and sits on top of a water table that serves as a regional resource. The population most exposed to any contamination from underground tank failures in this area has limited resources to detect health impacts, limited access to healthcare to treat them, and limited political power to demand accountability.

Benzene, the primary carcinogen in gasoline, is a known human carcinogen with no safe level of exposure according to the EPA. Long-term exposure to benzene-contaminated drinking water is associated with leukemia and other blood disorders. The regulatory requirement for 24-hour reporting of unusual operating conditions exists to minimize the window in which contaminated water could reach someone’s tap undetected. YOK’s 13-day silence represented a 13-day window where that protection simply did not exist for anyone relying on potentially affected groundwater sources.

The $50,672 fine ($50,672 is roughly equivalent to what a Delaware minimum-wage worker earns in about two and a half years of full-time work) landed on a company operating a commercial fuel retail business. For a gas station operator running four large-capacity underground tanks in a major metropolitan area, that penalty represents a cost of doing business, not a deterrent. The fine does not approach the economic damage that a full groundwater contamination remediation in a dense urban area would cost, which routinely runs into the millions of dollars.

The disparity between the fine and the potential harm illustrates a structural inequality embedded in environmental enforcement. Working-class communities in older industrial cities like Wilmington absorb the environmental risk generated by fuel retail operations, but the financial penalty for ignoring that risk is calibrated in ways that make non-compliance a rational economic gamble for operators. The people most likely to suffer a health consequence from a slow gasoline leak are the least likely to receive compensation, and the fine collected goes to the federal government, not to the neighbors of Southbridge BP.

The “Cost of a Life” Metric

What Now?

The Operator and Facility

• Respondent: YOK, LLC, Manager: Matt Kidane (signatory to the consent agreement), 201 South Herald Street, Wilmington, Delaware 19801.
• Facility: Southbridge BP, 201 South Herald Street, Wilmington, Delaware 19801.
• YOK, LLC signed the consent agreement and certified current compliance, but neither admitted nor denied any of the specific factual allegations.

Watchlist: Who Oversees This

• U.S. EPA Region 3 Enforcement and Compliance Assurance Division — filed the consent agreement and retains the right to take further action for any new violation or imminent endangerment.
• Delaware Department of Natural Resources and Environmental Control (DNREC) — the state agency with primary responsibility for administering and enforcing Delaware’s underground storage tank program. Call them: 302-395-2500 (the exact number YOK was required to call within 24 hours of any alarm).
• EPA Office of Underground Storage Tanks (OUST) — the federal program office that sets national standards for tank operations.

What You Can Do Right Now

If you live near a gas station and smell fuel, see discolored water, or notice dead vegetation in an otherwise green area, call your state environmental agency immediately. In Delaware, that is DNREC at 302-395-2500. You do not need proof. That is their job to determine.

Demand transparency from your local government. Ask your city council member or county commissioner whether the underground storage tanks in your neighborhood have current compliance records and when they were last inspected. These records are public. You have a right to them.

Connect with local environmental justice organizations in Wilmington. Groups doing community monitoring, air and water quality work, and neighborhood advocacy in Southbridge and surrounding areas can use your time and your witness. Mutual aid looks like showing up at public comment meetings, sharing EPA enforcement documents in your community feeds, and making sure the people most affected know that these records exist and are public. The consent agreement you just read was filed on September 22, 2025. It is public. Share it.