SAN JUAN, Puerto Rico – A federal grand jury in San Juan, Puerto Rico, returned an indictment today charging Ramón Plaza-Gregory, Ileana Cortés-González, and Mo-Na-Co Biomedical & Environmental Corp. (Monaco) with five violations of the Clean Air Act as well as conspiring to violate the Clean Air Act. The charges relate to emissions from Monaco’s commercial incinerator in Aguadilla, Puerto Rico, which is owned by Plaza-Gregory and operated by both Plaza-Gregory and Cortés-González.
According to the indictment, Monaco was permitted to incinerate pathological waste, subject to limitations on the type of materials that could be burned and the amount of emissions that could be released. Starting in August of 2021, Plaza-Gregory and Cortés-González burned unpermitted materials, used malfunctioning equipment, and exceeded emissions limitations. After an inspector from the Environmental Protection Agency (EPA) told the defendants of the violations, Plaza-Gregory began operating Monaco’s incinerator on weekends and holidays. The defendants continued to operate the incinerator illegally and emissions excesses were documented again in July 2024. In September 2024, Monaco’s emissions permit expired and was not renewed, yet the Defendants continued to operate the incinerator on weekends and cause emissions up until at least April of 2026.
“The Clean Air Act is a foundational piece of American environmental law, and when its clear guidelines are disregarded, we are committed to enforcing it,” said Principal Deputy Assistant Attorney General Adam Gustafson of the Justice Department’s Environment and Natural Resources Division (ENRD) “Commonsense enforcement actions will help keep our communities healthy.”
“Ensuring that all residents of Puerto Rico enjoy a healthy environment free of hazardous waste and other pollutants is a top priority of the U.S. Attorney’s Office, the Department of Justice, and our federal and local partners,” said U.S. Attorney W. Stephen Muldrow for the District of Puerto Rico. “We remain committed to protecting our communities from environmental and health hazards.”
“Environmental crimes are not abstract or victimless crimes — they impact the health, safety, and quality of life of our communities,” said Special Agent in Charge Carlos R. Goris for the FBI’s San Juan Field Office. “The FBI is committed to working with our partners to investigate these violations and ensure that those responsible are held accountable.”
“Monaco knowingly violated its Clean Air Act permit first by burning biomedical waste, and, once its permit lapsed completely, also continuing to burn pathological waste like animal carcasses. There is no telling what harmful pollution was emitted from improper and incomplete incineration,” said EPA’s Assistant Administrator for Enforcement and Compliance Assurance Jeffrey A. Hall. “The company president deliberately concealed these violations by failing to record basic information about what was being burned, by not even maintaining a functioning temperature gauge, and by operating on weekends and holidays. Environmental protection depends on companies attempting to comply with the law in good faith, and these knowing and repeated violations and intentional evasion of Clean Air Act requirements justify criminal penalties.”
The Clean Air Act is the country’s primary tool to fight air pollution in an effort “to protect and enhance the quality of the Nation’s air resources so as to promote the public health.” In order to do so, polluting facilities are required to operate pursuant to permits that set limits on what, and how much, pollution can be emitted.
Both Plaza-Gregory and Cortés-González are scheduled to appear before Magistrate Judge Héctor Ramos of the U.S. District Court for the District of Puerto Rico for their respective initial appearances. If convicted, they face a maximum penalty of five years in prison and $250,000 in fines for each charge. Monaco faces a maximum penalty of $500,000 in fines per charge.
The case was investigated by the EPA’s Criminal Investigation Division and the FBI’s Aguadilla Resident Agency which participate in the Puerto Rico and U.S. Virgin Islands Environmental Crimes Task Force.
The case is being prosecuted by Senior Trial Attorney Patrick M. Duggan of ENRD’s Environmental Crimes Section and Assistant U.S. Attorney Seth A. Erbe for the District of Puerto Rico.
Report possible violations of environmental laws and regulations at epa.gov/tips. You can provide tips anonymously if you do not want to identify yourself.
An indictment is merely an allegation and all defendants are presumed innocent until proven guilty beyond a reasonable doubt in a court of law.
