http://qui.live.mediaspanonlinen.com/rss/ Quincy Herald Whig en-us By RODNEY HARTHerald-Whig Staff Writer San Diego-based PETCO has announced tentative plans to open a store at the Quincy Mall in October 2009. PETCO, which has more than 900 stores in 49 states, will open a 13,500 square-foot store near the site of the former Kroger building directly north of Starbucks at 3115 Broadway. http://qui.live.mediaspanonline.com/new_story/Petco----FRI