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Instrument Breathing Zone Action Taken <br /> Reading <br /> Explosion Meter <10%of LEL Work may continue. Evaluate inhalation potential. <br /> 10-20%of LEL Work may continue. Eliminate all ignition sources,Reduce the <br /> concentration&increase monitoring frequency,consider use of ventilation. <br /> >20%of LEL Work must stop until LEL is Below 10%1 <br /> OXVaen Meter <19.5%02 Leave area. Re-enter only with SCBA. <br /> 19.5%to 23.5%02 Work may continue. Investigate causes of changes above/below 21%. <br /> >23.5%02 Work must stop. Ventilate before returning and retest atmosphere.02-rich <br /> atmospheres pose explosion hazards. <br /> Hydrogen Sulfide(H,S) 0-5 ppm Continue working. <br /> Colorimetric Tubes or Monitors-- 5-10 ppm Requires Level B including supplied air respirator or SCBA. Increase <br /> Some states with high regional H2S monitoring frequency.Contact Health&Safety Sr.Specialist. <br /> have special,local monitoring >10 ppm Supplied air respirator required due to poor warning properties and toxicity. <br /> requirements. <br /> Sound Level Meter <85 dBA Suggest wearing hearing protection when it is necessary to raise voice to be <br /> heard at distance of 3 feet. <br /> 85-90 dBA Hearing protection required. Install warning signs for fixed noise sources. <br /> Hearing protection required. Employer must have Hearing Conservation <br /> >90 dBA Program. <br /> C. FIRST AID EQUIPMENT AND EMERGENCY PROCEDURES:(compile information on the Incident/Near Miss form located in Appendix <br /> B. Call the office ASAP. <br /> 1. First Aid Equipment: <br /> Standard first aid kit(sized for number of individuals on-site). <br /> Portable eye wash(appropriate for number of individuals on-site). <br /> 2. First Aid Procedures: <br /> Ingestion: Follow instructions from Poison Control Center or the MSDS. <br /> Inhalation: Move victim to fresh air. Seek medical attention if needed. <br /> Dermal Exposure: Remove contaminated clothing. Wash thoroughly with soap and water. <br /> A first aid kit will be provided on-site for use in case of minor injuries. A portable eye wash will also be provided,and if a worker suffers <br /> a chemical splash in the eye,the field team will be instructed to flush the eye for 15 minutes and arrange for off-site medical treatment <br /> immediately. Workers will also be instructed to thoroughly wash with soap and water any unprotected skin that comes in direct <br /> contact with contaminated soil or water. <br /> Workers providing CPR or First Aid should use Universal Precautions to control possible exposure to bloodborne and infectious agents. <br /> Report all CPR or First Aid assistance to the Health and Safety Sr.Specialist immediately. <br /> 3. Site Emergencies: <br /> 10 <br />