The owner of a recycling facility that has been burning for more than 30 hours at an industrial park in Maywood was recently charged with multiple felonies for improperly storing and disposing hazardous materials at his site, according to court records.

Da Xiong Pan, who also goes by Daniel Pan, pleaded not guilty in May to five felony charges. Among those charges was that he knowingly disposed of treated and stored hazardous waste without a permit at his site, Panda International Trading Co., at 3570 Fruitland Ave., according to a Los Angeles County Superior Court criminal complaint.

Investigators visited the facility in June and November 2013 and collected evidence showing that toxic levels of metal particulates were released onto a public sidewalk in front of the company’s facility, according to the California Environmental Protection Agency’s Department of Toxic Substances Control.