Sunnyvalley Smoked Meats — a supplier of top quality ham, bacon and turkey to supermarket chains — is planning an expansion.

The firm located on West Yosemite Avenue across the tracks from the Lathrop-Manteca Altamont Corridor Express station wants to expand its existing building by 65 percent.

The original part of the 49,730-square-foot processing plant was built in 2000 with 6,000 square feet of that added in 2010. The latest proposed addition consists of 32,280 square feet.

The Manteca Planning Commission will review the plans when they meet Tuesday at 7 p.m. at the Manteca Civic Center, 1001 W. Center St.

The proposal also includes a 201-square-foot outdoor patio. The building addition will include space for offices, dry and cold storage, loading dock, and employee locker rooms. Plans call for adding 58 parking stalls to the existing 64 stalls.

Sunnyvalley Smoked Meats, Inc. was established In 1990 by Bill Andreetta. The Andreetta family has been in the meat business in Manteca since 1959. The family bought a meat locker plant and operated it as Manteca Meat Service for many years. Andreetta purchased the business from his father in 1972 after his service in the U.S. Army.

During an interview last year, Andreetta noted the firm typically has 165 workers but that figure jumps to 200 working three shifts a day around major holidays such as Thanksgiving, Christmas, New Year, and Easter.