In the event of an earthquake, hospitals must remain standing and should be functional, if possible. The poor performance of older hospitals observed following the 1994 Northridge earthquake forced the State of California to reassess seismic requirements for existing medical facilities. When the California State Senate passed Senate Bill (SB 1953), they required hospitals to evaluate the seismic resistance of their structures and report the findings to the Office of Statewide Health Planning and Development. The initial bill established a compliance timeline with a target date of 2030 to bring all existing buildings up to a satisfactory seismic performance level. SGH assisted John Muir Health with many compliance challenges, including the evaluation and retrofit design for multiple existing buildings at both the Walnut Creek and Concord Medical Centers.