Berks County-based Penn National Gaming Inc. is closing one of its off track wagering centers in Pennsylvania.

The company's decision to close the center in Chambersburg, Franklin Co., was made on "the basis of business volume," said Dan Silver, director of racing for Penn National Race Course, adding that the facility will likely close in August.

The 12,500-square-foot center opened in 1994 and has a restaurant and bar. The center allows bets to be placed on horse races simulcast through the center.

Facility manager Joe Kirwan said he has seen a decrease in customers.

Around 30 employees will lose their jobs. Silver said the company will work with them to find work at other locations owned by Penn National, including the off-track wagering site in the Shelbourne Square shopping center in Exeter Twp., Berks Co.

Penn National, headquartered in Wyomissing, also operates more than two dozen casinos and horse racing tracks in the United States and Canada, including the Hollywood Casino near Hershey and The M Resort Spa in Las Vegas.

The company, along with Endeka Entertainment LP, last Friday submitted a proposal to the Pennsylvania Gaming Control Board for the development of a $225 million integrated racing and gaming facility, called the Lawrence Downs Casino and Racing Resort, in Mahoning Twp., Lawrence Co., about 60 miles north of Pittsburgh.