 Standardized changed condition clauses are required to be included in all contracts. The Missouri Standard Specifications and the ''Standard Specifications for Public Works Construction'' (Green Book) contain standard changed condition clauses. If a LPA choses not to use MoDOT's standard specifications, the LPA must still comply with the federal regulations. (Refer to [http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&