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Aug . 20 ' 90 14139 1111 r PLIED GEOSYS-rE 916-45: 3534 P . 6 Site Safety Plan August 20, 1990 Former Exxon Station No. 7-1050, Stockton, California AGS 30045-IS Qualitative Respirator Fit Test Qualitative fit testing of each respirator must be conducted before the respirator may be used to check that a good fit is still obtained, The following steps should be taken in qualitative fit test of the respirator. 1. Dnn the face piece with cartridge or filters in place. Pull straps together and equally to avoid distorting the mask. 2. Adjust the face piece. Do not overtighten it. 3. Negative Pressure beak Check: Close off both inlet connections with palms of hands, inhale slowly, and hold breath momentarily. No leakage should be detected and the face piece should be drawn slightly to the face. 4. Positive Pressure Leak Check: Close opening in the exhalation valve guard by placing palm of one hand over face of guard: exhale slowly maintaining slight positive pressure. No leakage should be detected between the face seal and the face. 5. Should any leakage be noted: a) Adjust the headstraps and face piece slightly; recheck for leakage. b) Check condition of exhalation valve and seat. Check that both inlet gaskets are present and in proper condition. C) In the event the face piece cannot be adjusted so there is no leakage, DO NOT ENTER THE AREA REQUIRING PROTECTION. Due to your particular facial features, a different style or size face piece may be required to obtain a proper facial fit. Note: Failure to perform a qualitative fit test of the respirator each time the respirator is donned may result in little or no respiratory protection. Inspection, Cleaning, and Storage The respirator should be inspected, cleaned, and properly stored after use each day. The following steps are the basic elements of each procedure: A. Inspection 1. Examine face seal for rips, tears, holes, deformation, or stiffness. 10