KANSAS CITY, Kan. (AP) — A Kansas chemical company has been fined $1.5 million after pleading guilty to storing hazardous waste without a permit required by federal law.

The U.S. Attorney’s office says Harcros Chemicals, of Kansas City, Kansas, entered the plea Thursday in federal court.

Harcros makes industrial chemicals including surfactants and antifoaming agents. The company admitted in its plea that it stored waste chemicals from May 2006 through January 2009 without a permit to store them for more than 90 days.

The company told The Kansas City Star the chemicals were kept in cabinets and storage areas for potential future use and were never released into the environment. Harcros also said the chemicals were properly disposed of shortly after a regulatory inspection that took place in 2008.