MARTINEZ -- A Richmond metal plating company has been charged with numerous violations of the state's hazardous waste laws, state officials said Thursday.

Electro-Forming Co. and its owner, Marion Patigler, are charged with 11 felony counts and 12 misdemeanor counts for the mismanagement of hazardous waste, including the unlawful disposal, storage, treatment and transportation of hazardous waste.

The Contra Costa County District Attorney's Office filed the charges Thursday after an investigation by the state Department of Toxic Substances Control.

The facility illegally treated, stored and disposed of plating waste for several years, allowing dangerous waste to gather under the floor of the facility and creating serious safety risks, according to the complaint.

The company also failed to label drums, provide employee training, operate the facility in a manner meant to prevent a release and obtain a valid hazardous waste transporters registration, according to the complaint.

"The reckless behavior of this company and its owners warrants a tough enforcement response," said Reed Sato, an attorney for the state department.

Reached Thursday afternoon, Patigler said she was unaware of the charges. She did not offer a comment after being emailed a copy of the allegations.

In August, the state's attorney general filed a civil complaint against the company, alleging workers were unlawfully boiling off liquid plating waste and combining different types of hazardous waste in a tank.

In November, a Contra Costa County Superior Court judge ordered the facility to stop ongoing violations of the state's hazardous waste laws and immediately remove large quantities of hazardous waste, including potentially deadly cyanide, from their property. The company complied.

Reach Kristin J. Bender at kbender@bayareanewsgroup.com. Follow her at Twitter.com/kjbender.