Moving from travel trailers to the 30.2, I had to hunt as well.
They're in this compartment:
Look for the two (2) "key rings" amongst these pipes (sort of on either side of the fresh water pump) and "pull up" on the rings. These are the low point drains.
Another thing I noticed is when you drain the fresh water tank (ball valve in compartment on the opposite side of the RV), about 1-2 inches of water remain in the tank because of the placement of the drain pipe on the side of the tank. I'm thinking that during storage this may get a bit funky?