It’s an 800,000-square-foot behemoth situated on 106 acres that supplies groceries and supplies for the largest supermarket chains in Northern California.

And it’s about to get a little bit bigger.

On Tuesday the Lathrop Planning Commission will determine whether to allow Super Store Industries – the Louise Avenue distribution center that supplies the Save Mart and Raley’s chains with the items that stock the shelves – to expand its refrigerated storage section for the second time in five years.

The 18,000-square-foot addition would complement an expansion of the same size that was approved in 2011, and contribute to increasing the massive footprint of the complex – more than 150,000 square feet of which are dedicated to frozen and refrigerated items.

According to the report prepared by staff for the commission, the addition would bring the total size of the complex – which generates a fair amount of truck traffic thanks to its strategic location between I-5 and Highway 99 and near the Highway 120 Bypass – to nearly 800,000 square feet.

The complex initially opened in 1990 with a 650,000-square-foot dry goods warehouse and a refrigerated section totaling 128,000 square feet opened three years later.

If approved by the commission, the new expansion will be located on the west side of the complex, adjacent to McKinley Avenue, near the 2011 construction.

The new space will help Super Store Industries more efficiently store and transport refrigerated and frozen items by eliminating the need to temporarily hold them offsite before transferring them to the main warehouse and then shipping them out to individual stores – eliminating the number of truck trips to and from the Louise Avenue complex.

While the building itself is a sprawling campus that serves as central distribution point for both Save Mart and Raley’s – with nearby access to both the Central Valley and the Bay Area – the parcel itself actually makes it much larger than just building space.

According to the Lathrop Municipal Code, manufacturing, indoor storage and industrial businesses must provide one parking space for each employee on the most heavily-worked shift as well as one space for every vehicle parked for more than 24 hours – amounting to 394 passenger car spaces and 158 tractor-trailer spaces.

The parking regulations are not expected to change as they are not based on square footage.

Construction of the building will utilize a pre-fabricated metal frame building that will complement the concrete tilt-up construction that comprises the main portion of the warehouse. The addition is consistent with Lathrop’s general plans goals and regulations.