More than 100 commercial businesses along the Broadway Corridor in Burlingame, California, have filed a class action lawsuit against A&A Gas & Mart and Mash Petroleum over a gasoline leak that triggered weeklong road shutdowns and power outages in January 2026. The suit, filed on February 23, 2026, by the law firm Cotchett, Pitre & McCarthy, seeks an undetermined amount of damages for lost customers, revenue, and inventory — losses that some business owners say stretched across 11 to 12 days of disruption. The leak sent gasoline contamination into both PG&E and AT&T electric vaults, forcing major road closures along Broadway and California Drive while crews worked to reseal the infrastructure.
Businesses like Nuts for Candy and Maverick Jack’s reported significant financial hits, with at least one owner citing losses of several thousand dollars during the extended shutdown period. The lawsuit alleges negligence and points to multiple underground tank violations at the gas station as the root cause.
Table of Contents
- Why Did 100 Burlingame Businesses File a Class Action Over the Gas Station Leak?
- What Caused the Gasoline Contamination and Road Shutdowns?
- How the Broadway Corridor Businesses Were Financially Impacted
- What the Lawsuit Seeks and What Businesses Should Document
- The Role of Underground Tank Violations in the Negligence Claim
- How Cotchett, Pitre & McCarthy Is Approaching the Case
- What This Case Means for Small Businesses Near Environmental Hazards
- Frequently Asked Questions
Why Did 100 Burlingame Businesses File a Class Action Over the Gas Station Leak?
The short answer is that the damage was too widespread and too prolonged for individual claims to make practical sense. When gasoline from A&A Gas & Mart contaminated underground utility vaults during the first and second weeks of January 2026, the resulting road closures and power outages didn’t just inconvenience a handful of shops. The entire Broadway Corridor — a central commercial artery in Burlingame — was effectively cut off from normal foot and vehicle traffic for the better part of two weeks. A class action allows these businesses to pool their claims rather than each hiring separate counsel and filing individual suits. Attorney Nanci Nishimura of Cotchett, Pitre & McCarthy is leading the case, and the firm has a long track record with complex litigation in the Bay Area.
The lawsuit doesn’t specify a dollar figure for damages, which is common in cases where the full scope of losses is still being tallied. Instead, it seeks compensation for lost customers, revenue, and spoiled inventory — categories that will require detailed accounting from each affected business. The suit also goes beyond money. It calls for the resolution of remaining tank-related issues at the gas station to prevent future incidents. That forward-looking demand reflects a concern among corridor businesses that the underlying infrastructure problems haven’t been fully addressed.
What Caused the Gasoline Contamination and Road Shutdowns?
The contamination originated from A&A Gas & Mart, where gasoline leaked from underground storage infrastructure and migrated into both PG&E and AT&T electric vaults beneath the street. These vaults house critical utility equipment, and the presence of flammable fuel inside them created a serious safety hazard that required immediate intervention. Resealing the contaminated vaults forced major road shutdowns along portions of Broadway and California Drive. These weren’t brief lane closures — they were full-scale shutdowns that lasted roughly a week, rerouting traffic and cutting off customer access to dozens of businesses.
The closures also triggered correlated power outages, meaning that even businesses not directly on the closed blocks lost electricity and couldn’t operate normally. A second gas leak was discovered in the Broadway corridor area during this same period, compounding the disruption. However, the lawsuit’s negligence claims rest heavily on the allegation that A&A Gas & Mart had multiple underground tank violations predating the January incident. If the defendants can demonstrate that they were in compliance with all applicable regulations and that the leak was truly unforeseeable, the negligence theory becomes harder to prove. Environmental contamination cases often hinge on whether the responsible party knew or should have known about the risk.
How the Broadway Corridor Businesses Were Financially Impacted
The financial damage to Broadway Corridor businesses went well beyond a single bad sales day. Business owners described the impact as lasting 11 to 12 days — nearly two full weeks of disrupted operations during what should have been a normal January. For small retail and food service businesses operating on thin margins, that kind of extended closure can be devastating. Nuts for Candy and Maverick Jack’s are among the named businesses that reported significant losses. One business owner told reporters that the shutdown cost them several thousand dollars — and that figure likely understates the full impact when you factor in customers who changed their shopping habits and didn’t return after the roads reopened.
Inventory losses were another major category; perishable goods, time-sensitive products, and items requiring refrigeration were all at risk during the power outages. The ripple effects are harder to quantify but no less real. Employees lost shifts and wages. Suppliers had deliveries refused or rerouted. Some businesses may have taken on debt to cover fixed costs like rent and utilities during the period when revenue dropped to zero. These downstream losses are exactly the kind of damages that class action litigation is designed to aggregate and recover.
What the Lawsuit Seeks and What Businesses Should Document
The class action seeks an undetermined amount of damages, which means the plaintiffs haven’t locked in a specific dollar figure. In practice, this gives the legal team flexibility to compile a comprehensive accounting of losses across all 100-plus businesses before presenting a demand. The categories of claimed damages include lost customers, lost revenue, and lost inventory. For businesses that were affected but haven’t yet joined the lawsuit, the most important step right now is documentation. That means gathering sales records from the shutdown period and comparing them to the same period in prior years, photographing any damaged or spoiled inventory, saving utility bills that show power outage dates, and keeping records of any communications with landlords about rent forbearance.
Businesses should also document any employee-related costs, such as wages paid during the closure or unemployment claims filed by workers. The tradeoff between joining a class action and filing an individual suit comes down to scale and resources. Individual suits allow a business to tell its own story and potentially recover more, but they’re expensive and time-consuming. A class action distributes the legal costs and leverages the collective weight of 100-plus plaintiffs, but individual recoveries may be smaller, and the timeline can stretch out. For most small businesses on the Broadway Corridor, the class action is likely the more practical path.
The Role of Underground Tank Violations in the Negligence Claim
The lawsuit’s negligence theory centers on the allegation that A&A Gas & Mart had multiple underground tank violations prior to the January 2026 leak. In California, underground storage tanks are regulated by the State Water Resources Control Board and local Certified Unified Program Agencies. Gas station operators are required to monitor their tanks, maintain leak detection systems, and address any violations promptly. If the plaintiffs can show that A&A Gas & Mart and Mash Petroleum were aware of tank deficiencies and failed to correct them before the leak occurred, the negligence case becomes substantially stronger.
Regulatory inspection records, violation notices, and any correspondence between the operators and oversight agencies will likely be central evidence in the litigation. A key limitation to watch is the question of causation. Even if violations existed, the defendants may argue that the specific leak was caused by something unrelated to those violations — aging infrastructure, a third-party contractor’s work, or an unforeseeable event. Environmental contamination cases often involve competing expert testimony about how and why a leak occurred, and that battle of the experts can significantly affect the outcome.
How Cotchett, Pitre & McCarthy Is Approaching the Case
Cotchett, Pitre & McCarthy is a well-known Bay Area litigation firm with a history of taking on large-scale cases involving corporate and environmental negligence. Attorney Nanci Nishimura is leading the case for the plaintiffs.
The firm’s involvement signals that the legal team sees viable claims worth pursuing on a contingency or similar fee arrangement, which is typical in class actions where individual plaintiffs may not have the resources to fund litigation on their own. The fact that the suit also demands resolution of remaining tank-related issues — not just monetary damages — suggests the legal strategy goes beyond compensation. By seeking injunctive relief, the plaintiffs are asking the court to ensure that the conditions that caused the leak are fully remediated, which could include tank removal, soil remediation, or upgraded monitoring systems.
What This Case Means for Small Businesses Near Environmental Hazards
The Burlingame gas station leak case is a sharp reminder that small businesses can suffer enormous collateral damage from a neighboring property’s environmental failures. Broadway Corridor shops and restaurants didn’t cause the contamination, didn’t own the tanks, and had no control over the utility vaults — but they bore the financial consequences when gasoline migrated underground and forced the city to shut down their streets.
For small business owners in similar situations — operating near gas stations, dry cleaners, industrial sites, or other properties with environmental risk — this case underscores the importance of understanding what’s next door and having business interruption insurance that covers third-party environmental events. Many standard policies exclude environmental contamination, so reviewing coverage before an incident occurs is far more effective than discovering gaps after one.
Frequently Asked Questions
Who filed the Burlingame gas station leak class action?
The class action was filed on February 23, 2026, by the law firm Cotchett, Pitre & McCarthy, with attorney Nanci Nishimura leading the case, on behalf of more than 100 commercial businesses along the Broadway Corridor in Burlingame, California.
Who are the defendants in the Burlingame gas leak lawsuit?
The lawsuit names A&A Gas & Mart and Mash Petroleum as defendants, alleging negligence related to gasoline contamination from underground storage tanks.
How much money does the lawsuit seek?
The suit seeks an undetermined amount of damages for lost customers, revenue, and inventory. The specific dollar amount has not been set as the full scope of losses across all affected businesses is still being compiled.
How long were Burlingame businesses affected by the gas leak?
Business owners described the impact as lasting 11 to 12 days, during which road shutdowns and power outages along Broadway and California Drive prevented normal operations.
What caused the road shutdowns in Burlingame in January 2026?
Gasoline from A&A Gas & Mart leaked into PG&E and AT&T electric vaults underground. Resealing those vaults required major road closures along Broadway and California Drive, which also triggered correlated power outages.
Can other affected businesses still join the class action?
The lawsuit was filed on behalf of more than 100 businesses, but affected businesses along the Broadway Corridor that have not yet joined should contact the law firm Cotchett, Pitre & McCarthy to discuss their potential claims.