Shotcrete - Using or discarding scraped material from walls

On my pool, the material scraped from the walls, steps, etc went into the floor and was used there. So no matter what is considered acceptable practice in the shotcrete/pool building industry, this is what I have. I also have hairline cracks running the length and width of my unfinished shell along the bottom but have not seen any as of yet on the walls.

I have seen things on TV, read some on this forum and this seems to be a controversal subject with strong feelings one way or another...

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