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Health <br /> ("KLE//VFELOER afet <br /> �\ Blight People.Fight Solutions. S y <br /> Noise levels Normal Voice Raised Voice Shouting Telephone Use <br /> dBA <br /> 40 to 49 dBA Satisfactory to Satisfactory <br /> 30 ft. <br /> separation <br /> 50 to 59 dBA Satisfactory to Satisfactory to 12 Satisfactory <br /> 6 ft. ft. separation <br /> separation <br /> 60 to 69 dBA Satisfactory to Satisfactory to 6 Satisfactory <br /> 3 ft. ft. separation <br /> separation <br /> 70 to 79 dBA Satisfactory to Satisfactory to 3 Slightly difficult <br /> 1 ft. ft. separation <br /> separation <br /> 80 to 89 Satisfactory to 1 Slightly difficult Slightly difficult <br /> dBA* ft. separation but to 6 ft. <br /> slightly difficult to separation <br /> 6 ft. separation <br /> 90 to 94 dBA Slightly difficult to Slightly difficult Difficult <br /> * 2 ft. separation to 3 ft. <br /> separation <br /> 95 dBA* Slightly difficult to Unsatisfactory Very Difficult <br /> 1 ft. separation <br /> Table 4. Quality of Person-to-Person Voice Communication <br /> *Earplugs and/or earmuff can be worn without interfering with communication. <br /> 5-07.7.2 Exposure Control Methods <br /> Where noise exposure exceeds the PEL, control measures should be implemented <br /> to: <br /> • Reduce the environmental noise levels; <br /> • Reduce the duration of exposure; or <br /> • Protect affected personal by the use of ear protector devices. <br /> In order of preference, to provide the best possible protection for the exposed <br /> employee, first engineering then administrative controls should be implemented. In <br /> this manner the noise hazard is controlled at its source affording the worker the <br /> best possible protection. If these techniques are not successful or feasible, then <br /> personal protective equipment shall be used. <br /> Page 6 of 9 Copyright 2019 Kleinfelder, Inc <br /> Important: When modifying this document, update properties with <br /> your name, date, and nature of changes made. <br />