EL CAMPO, TEXAS — Atlanta-based Ridgeline Property Group will develop SW International Gateway Business Park, a 540-acre industrial development that will be located in El Campo, about 75 miles southwest of Houston. Upon completion, the rail-served property will be able to accommodate up to 10 million square feet of Class A industrial space. Atlanta-based Stonemont Financial is funding the project, which will include warehouse, manufacturing and distribution facilities. NAI Partners will market the property. The groundbreaking is scheduled for June 19. A timetable for occupancy of the first buildings has not yet been established.