A contractor's crews routinely cut, grind, and drill concrete, creating respirable crystalline silica. Beyond dust controls, what written program does Cal/OSHA require?

Giải thích

Employers with silica exposure must maintain a written exposure control plan that identifies the tasks creating exposure, the engineering controls, work practices, and respiratory protection used for each. Option a and b are unrelated documents. Option d is wrong because a written plan is required regardless of respirator use. The plan ensures controls are planned and consistently applied, not improvised.