what would be wrong with dumping a tanker-truck load of drilling mud into a new tank?

Tank is about 1/2 acre, and will be about 15 feet deep if it ever rains again. I relize that I will not be able to get the mud around the sides of the tank due to the vertical walls in this damed up gully. This drilling mud is used, and coming from a drilling rig that has drilled a hole for a pipeline under the interstate. It is Limestone down there, so I am sure there will be some Limestone cuttings in the mud.

I have another tank that has about 8 feet of water,1 year old, stocked with cats and bluegill. When it fills, the water is about 20 feet deep and again about 1/2 acre. How about another load in this tank?