The 60-year-old man reportedly suffered severe injuries to his left upper body and lost part of his arm in the explosion. The victim has been described as an independent contractor who had been working working on a refrigeration unit near the back of the store.
The man was taken to a Modesto hospital but his current condition is unknown at this time.
The cause of the explosion is being investigated.
UPDATE (19th May, 2014): Friends and relatives of the injured man, Chris Browning, are raising money to help fund his medical expenses, according to local newspaper website Turlock City News.