"OSHA is finalizing the proposed rule on occupational exposure to beryllium and beryllium compounds in construction and shipyards by delaying the compliance deadlines for nearly all provisions of the standards to September 30, 2020. The one exception to the September 30, 2020 compliance deadline is for the permissible exposure limit (PEL) and the short-term exposure limit (STEL), which OSHA has been enforcing since May 11, 2018..."
Final Rule can be found here.