SAND CITY RESIDENTS WERE ASKED NOT TO FLUSH THEIR TOILETS FOR A WHILE TODAY. THAT’S SO THAT SANITATION WORKERS COULD DETERMINE WHERE A FOUL ODOR, THAT SEEMED TO BE EMANATING FROM A SEWER NEAR THE INTERSECTION OF CONTRA COSTA AND ORTIZ STREETS, WAS COMING FROM. THE SMELL WAS REPORTED JUST AFTER NOON, AND THE ROADWAYS IN TE AREA WERE RE-OPENED TO THROUGH TRAFFIC BEFORE 3 P-M.