During the building of my house with a full basement there were severals leaks. The A/C was turned on and the condenser pump was not hooked up so the water drained onto the floor of the basement. The builder took the porta-jon away and had the workers using a toilet in the house that turned out not to be hooked up correctly and it flushed into the basement. The Bilcos were not sealed correctly and they leak (a lot) into the basement when it rains. At first the builder would not acknowledge the leaks and insisted we were having ground water issues. I hired an engineer. The A/C and toilet problems were fixed, bilco remains a problem. Now, I think there is mold on the studs in the basement ceiling. What should be done? Who should do it? How do I find out if I'm right about the mold?