The accident ocurred about 5:30 a.m. Friday when one employee tried to chlorinate a water system near Flix Fanfare, a spokeswoman for the Anaheim Fire Department said.

The chemicals mixed were hydrochloric acid and sodium hydrochloride, which resulted in a vapor similar to what happens when household chemicals are mixed with bleach, the spokeswoman said.

The chemicals were used to chlorinate a water system attached to water jets at a children's play area, she said.

The Anaheim hazmat unit and firefighters supervised cleanup. The park's operation was not affected.

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