If you are bidding federal projects you may need to pay Davis-Bacon wages which are usually even higher than state prevailing wage (in my experience). All wage determinations for the project should be provided with the bid documents in either case. Contact the agency that issued the original RFQ or the GC's you are bidding to for this information. I would imagine they should be required to give it to you, I have not seen specs without them, and would probably want you to have it. If certified payrolls are not submitted correctly getting paid can turn into a nightmare real quick.