There are 5' of liquid in OWS#4 of that 5" at the bottom is dirty water. The other 4'7" is clear water with some floating solids and 1/16" of black oil and about 1/16" of dirty oil floating at the top.
Condition or appearance
There are 5' of liquid in OWS#4 of that 5" at the bottom is dirty water. The other 4'7" is clear water with some floating solids and 1/16" of black oil and about 1/16" of dirty oil floating at the top.