Two members of the San Francisco Board of Supervisors introduced an ordinance to be considered that would require grocery stores to provide six-months notice before closing, or be liable for a lawsuit. Supervisors Dean Preston and Aaron Peskin introduced the ordinance on Tuesday, which would also require that operators of supermarkets in the area make a “good faith” effort to continue services at the location, such as selling the store to another operator, according to the bill. The bill does provide room for grocery stores to close before the six-month requirement due to “not reasonably fores…