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i • 8.0 RESPIRATORY PROTECTION 81 RESPIRATOR SELECTION Engineering controls and safe work practices (e g elimination of the source of contamination, ventilation equipment, working upwind, limiting exposure time, etc) I must always be the primary control for air contaminants Respirators will be used if engineering or work practice controls are not feasible for controlling airborne exposures below acceptable concentrations and as an interim control measure while engineering or work practice controls are implemented Once the need for respirators has been established, the respirators will be selected on the basis of the hazards to which the worker is exposed Only NIOSH-approved respirators will be issued Selection criteria established in 8 CCR 5144 has been used by the HSP Preparer in determining respirator requirements for this project CAUTION Full face piece or half-face piece air purifying respirators are not to be used where there is an oxygen deficiency Only air-supplied respirators with an emergency escape cylinder or self-contained breathing apparatus will be worn when an oxygen deficiency exists CAUTION A respirator does not protect against excessive heat or against hazardous substance that can attack the body through the skin The form of the airborne contaminants has been evaluated based upon the suspected contaminants of concern Evaluation of the concentration of the airborne chemical hazard will be performed using direct reading instruments to determine what type respirator will be used Airborne readings will be compared to Action Levels in the table in Section 10 See action level/respirator requirements in Section 6 1 i 8 2 MEDICAL SCREENING Project employees are enrolled in the Dames & Moore Medical Surveillance Program and are medically evaluated in compliance with the requirements of 8 CCR 5144(a)(10) Employees not physically or psychologically capable of wearing respirators are not assigned to this project The medical status of each employee is reviewed annually and as may be deemed necessary by the examining physician if the physical status of the employee changes 83 FIT TESTING A person wearing a respirator must be clean-shaven in the area of the face piece seal Long hair, sideburns, and skullcaps that extend under the seal are not allowed Glasses with temple pieces extending under the seal are not allowed for full-face respirators AMFOREST 21 7 21