Joel--
Thank you for responding and for your insight.
I believe the REA would be valid because it was an error in wage standards. instead of including Davis Bacon wages the sub just included standard wages. there was nothing to negotiate with the owner as the hours are the hours and rate is the rate. The Owner would have paid the total value regardless.
I was not originally overseeing this sub when they submitted an RFP to the prime.
If I did not sign the Change Order wouldn't we still have to submit a REQ because the prime had already signed their CO with the Owner?