One or more accreditation criteria in this subchapter may be waived if a library shows good cause for failure to meet the criteria. For purposes of this subchapter, good cause means a public health emergency, including, but not limited to, a pandemic or epidemic; a natural or man-made disaster, including, but not limited to, a tornado, hurricane, flood, wildfire, explosion, or chemical spill; or other extraordinary hardship which is beyond the control of the library as determined by the agency.