I currently have an above-ground exit for my sump pump, a hole through a concrete block wall with 1-1/2 PVC pipe running through it. I am making a new exit, burying it and tying it into my drainage system. The new exit will be about about 18 inches below the current exit. I have two questions:
1. What do I use to drill a 1-1/2 inch whole through the concrete block?
2. What do I use to seal and waterproof the new hole which will be underground? I want to seal both the inside and outside wall of the block.