The EPA says Airgas had some anhydrous ammonia failures at a California location

At Airgas Specialty Products’ facility on Wilderness Avenue in Riverside, federal inspectors were examining the safeguards around a large ammonia inventory. What EPA later listed was not a single paperwork error. The agency alleged that pressure-relief equipment, emergency controls, piping, storage tanks, gas sensors and inspection records all presented deficiencies under federal process-safety rules.

Airgas used the facility to supply and distribute ammonia. According to the agreement, it produced, used or stored more than 10,000 pounds of anhydrous ammonia there. That quantity brought the operation under the Clean Air Act’s Risk Management Program, which is intended to prevent or minimize accidental chemical releases and provide for an emergency response if one occurs.

EPA inspected the facility on June 7, 2023. Its subsequent investigation produced two alleged violations: one involving process-safety information and accepted engineering practices, and another involving equipment inspection, testing and correction of deficiencies.

The facility was subject to what federal rules call Program 3 requirements. In practical terms, that meant Airgas had to do more than maintain a general emergency plan. It had to document the engineering basis for covered equipment, inspect and test that equipment on an appropriate schedule, correct deficiencies and maintain an emergency-response program.

The agreement says Program 3 applied because the facility was covered by the Occupational Safety and Health Administration’s process-safety standard and because public receptors were located within the endpoint for its modeled worst-case release. The document does not identify those receptors, give their distance from the facility or describe the modeled release in greater detail.

EPA divided its case into two counts. The first concerned whether Airgas could show that the process was designed and maintained according to recognized and generally accepted good engineering practices. Those practices are the industry codes and technical standards used to determine whether equipment is being operated safely.

The second count concerned mechanical integrity: whether covered equipment had been properly inspected, tested and repaired, with records showing what was examined, by whom, when and with what result.

The agreement establishes a potential-exposure context, not documented harm. It says public receptors were within the endpoint of the facility’s modeled worst-case release, but it does not identify the number or type of receptors. It also does not report an accidental release, an injury, an evacuation or environmental damage tied to the cited conditions.

That distinction matters. EPA’s case concerned the systems intended to keep an accidental ammonia release from occurring or to limit its consequences. The settlement document does not establish that those alleged deficiencies produced an actual release.

The consent agreement refers to an inspection and a later show-cause letter, but the underlying inspection report, photographs, maintenance records and December 2024 letter are not included in the supplied source. The agreement itself provides the detailed list of EPA’s allegations.

Airgas did not admit the specific factual allegations. It also did not deny them. For purposes of the proceeding, the company admitted EPA’s jurisdiction, accepted the civil penalty and other conditions, and waived its right to contest the allegations or appeal the final order.

The company also certified under penalty of law that it had taken all steps necessary to return to compliance with the Clean Air Act requirements underlying EPA’s allegations. The agreement does not describe the individual repairs or corrective actions, provide completion dates or attach records verifying the work.

The agreement settles an administrative civil-penalty case without a complaint being litigated and without adjudication of any factual or legal issue. Airgas agreed to pay $164,931 within 30 calendar days after the order’s effective date.

If the order becomes effective, compliance resolves Airgas’s federal civil-penalty liability only for the violations specifically alleged in the agreement. It does not operate as a permit, remove obligations under other laws or release unrelated claims. Those reservations do not establish any additional violation; they define the settlement’s limits.

The document also establishes escalating stipulated penalties if Airgas fails to meet a requirement: $500 per day for the first 15 days of delay, $1,000 per day for days 16 through 30, and $5,000 per day after that. Those amounts are contingent consequences, not penalties the source says have accrued.

No contested hearing determined whether each alleged condition existed exactly as EPA described it. The source does not say how long the ammonia sensors were out of service, whether they all failed at the same time, when the corrosion developed or how the missing records affected the agency’s ability to reconstruct past maintenance.

The procedural status is also incomplete in the supplied copy. Airgas’s signature appears, but the visible EPA signature line is blank and the document does not show approval by a Regional Judicial Officer or filing with the Regional Hearing Clerk. Because filing triggers both the effective date and the 30-day payment period, this copy alone does not establish that the penalty became due or was paid.

A durable correction would have to address both the equipment and the recordkeeping failures EPA alleged. That means functioning and tested ammonia sensors; secured cylinders; readable labels and tank nameplates; properly managed relief-valve discharge locations; and inspection of corrosion at pipe supports and tank saddles.

The paper trail is part of the safeguard. Inspection records should identify the date, inspector, equipment, procedure and result, as the regulation described in the agreement requires. Without those records, a facility may be unable to demonstrate that a component was inspected on schedule or that a known deficiency was corrected. Airgas certified that it returned to compliance, but the supplied document does not disclose the work behind that certification.