Air pockets/holes in gunite

[poolGr]

We had our gunite pool shot last week and when they removed the wood that was used to form the perimeter of the pool I noticed a few holes that look like air pockets on the outside just below the top of the pool wall (pictures attached). Is this something to worry about? Thank you!

 

[AQUA~HOLICS]

In the last picture is that a piece of exposed rebar running horizontally? , air pockets are not common but do happen.
A minimum thickness is required and typically stated on the steel engineering plans.

 

[poolGr]

Thanks for the reply! The rebar is from the skimmer. I don't see any exposed rebar in the air pocket but I cannot see all the way in.

 

[AQUA~HOLICS]

Piece in question.

 

[poolGr]

You have a good eye. Yes it is exposed rebar.

 

[AQUA~HOLICS]

If the finished product does not meet the minimum requirement for thickness , then the Shotcrete company needs to be advised.

 

[poolGr]

Thanks. I have one last question. Is it ok to leave that piece of plywood that was used to form the spa? When they removed all the wood pieces they used to form the pool they left that piece as it was stuck pretty firmly to the pool wall.

 

[AQUA~HOLICS]

If you are describing the plywood that appears to be below grade, yes It can be left on the face as long that portion of the spa wall will not have a finish on it such as tile or stone.

 

[poolGr]

That's great. That was all very helpful. I really appreciate your help!