construction clean up ?

You might try some sand, and sweeping it up. Seems odd that they want it cleaned and that using a pressure washer is not allowed. Someone must have torn up some green concrete on the contractor before.
 
I did 12 buildings worth of that last summer.
Fortunately, I could use water.
 

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I ran into this problem, I use a scraper, it's time consuming but I have found that works on really green (soft) concrete. I tried heat, low pressure, chems, etc... Good Luck!
GT43.jpg
 
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