The other major sewage dump, in the 1500 block of North Chapel Street in Broadway East, was leaking an estimated 10 gallons per minute Monday morning into storm drains that eventually run to the harbor, Raymond said. It had leaked more than 10,000 gallons of untreated sewage as of Monday, and while it was discovered late last week, Raymond said, the city has been unable to determine what caused it or how to fix it.