; and (II) training of supervisors in monitoring heat conditions and environmental forecasts, recognizing signs of heat-related illness, and protocols for responding to likely heat-related illness. (vi) Planning requirements Requirements for a heat illness and injury prevention plan that— (I) is of sufficient quality to effectuate the purposes of this Act and to effectuate the requirements of the standard that apply to the employer; (II) is developed, updated, and implemented with the meaningful participation of the employer’s employees and, where applicable, such employees’ representatives, for all aspects of the plan; (III) is produced and maintained in writing and updated in light of changing conditions or practices; and (IV) is made available, upon request, to any employee, the employee’s representative, and the Secretary. (vii) Standard health and safety measures Any measures described in section 6(B)(7) of the Occupational Safety and Health Act of 1970 (29 U.S.C. 655(B)(7)). (B) Innovative solutions As the relevant scientific evidence develops, technological solutions improve, and environmental conditions or new work practices aggravate the risk of heat-related illness or injury, the Secretary may modify, supplement, or revise a worker heat protection standard by rule in order to improve such standard in light of such changes, even if it departs from long-standing past practice, provided that the resulting standard is consistent with this Act. (C) Core practices The Secretary shall establish criteria under which an employer who exposes or may reasonably be anticipated to expose an employee to heat or heat stress that is not reduced below hazardous levels by engineering controls or personal protective equipment shall implement a reasonable program that includes— (i) suitably cool potable water or appropriate hydration, provided at employer expense; (ii) periodic paid rest breaks scheduled to reduce heat stress below hazardous levels; (iii) access to shade or suitable cool-down spaces