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Site Health and Safety Plan Countryside Market, Stockton, California March 21, 2014 6.0 MAINTENANCE AND CALIBRATION OF EQUIPMENT 6.1 Respiratory Protection Respirators can be used to prevent dust and chemical exposure during Site activities. If respirators are required personal protective equipment (PPE), they will be cleaned daily according to procedures described below. Cartridges will be replaced when breakthrough is detected at any time while in use. Breakthrough for high efficiency particulate air (HEPA) cartridges will be determined by an increased resistance to breathing. All employees will be fit tested according to CCR Title 8 Section 5144 prior to working at the Site. The following checks will be performed daily, in addition to the above: Exhalation valve — pull off plastic cover and check valve for debris or for tears in the neoprene valve, which could cause leakage. Inhalation valves — screw off both cartridges and visually inspect neoprene valves for tears. Make sure that the inhalation valves and cartridge receptacle gaskets are in place. Make sure a protective lens cover is in place (full-face respirator). Make sure you have the proper HEPA cartridges. Make sure that the facepiece harness is not damaged. The serrated portion of the harness can fragment which will prevent proper face seal adjustment. Make sure the speaking diaphragm retainer ring is hand tight. 6.1.1 Respirator Leak Test Test the respirator for leakage by using both the positive- and the negative-pressure method. Lightly place your palm over the exhalation valve cover. Exhale gently. The body of the respirator should bulge slightly outward from your face. If any leakage is detected around the face seal, readjust the head harness straps and repeat the test until there is no leakage. If leakage is detected other than in the face seal, the condition must be investigated and corrected before another test is made. The negative-pressure test must also be made. Lightly place your palms or some impervious material, like Saran Wrap over the cartridges or filter holders. Inhale gently. The face-piece should collapse against the face. The respirator must pass these two tightness tests before the respirator is used. The respirator will not furnish protection unless all inhaled air is drawn through suitable cartridges or filters. Respirators will not provide protection in oxygen- deficient atmospheres. HASP 21MAR2014 6-1 APEX