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GD <br /> Site Health and Safety Plan -10- 88168C <br /> November 1989 <br /> 9.24 eV, ethylbenzene 8.76 eV, toluene 8.82 eV, .end xylene 8.56 eV) are all <br /> within the detection range of the PFA (less than 10.6 eV). If the organic vapors <br /> in the breathing zone detected by the PID exceed 5 ppm above background levels <br /> (to be measured prior to excavation and up-wind of the site) for more than five <br /> s-+ minutes, the personnel in the contaminated zone will don Level C equipment, <br /> including respirators. Level C equipment will be worn continuously in the <br /> contaminated zone until such time as the PID concentrations are below 5 ppm above <br /> background. If PID concentrations measured in the breathing zone exceed 800 <br /> ppm above background the site area will be evacuated immediately. Reentry will <br /> not be allowed until concentrations are below 800 ppm or Level B equipment is <br /> provided. Care should be taken in operating the PID to avoid monitoring vehicle <br /> , <br /> exhaust. <br /> i <br /> PERSONNEL PROTECTIVE EQUIPMENT <br /> r. Level D equipment will be required at the site at all times that the <br /> PID measured concentration are below 5 ppm above background. Level D equipment <br /> includes: s <br /> • Hard hats <br /> �r Coveralls <br /> • Rubber safety boots <br /> Safety glasses or goggles <br /> ' Standard work gloves <br /> { <br /> If organic vapor concentrations equal or exceed 5 ppm above <br /> background all personnel in the contamination zone (see "York Zone" section) 3 <br /> will don Level C equipment and remain in Level C equipment until organic vapor <br /> concentrations are reduced to below 5 ppm above background. Level C equipment <br /> 3 <br /> includes: <br /> Level D equipment plus: <br /> i" <br /> • Half-face respirator equipped with combination organic vapor/dust <br /> cartridges <br /> -- — -- ----- •---- Tyvek-suits-- - - -- - - <br /> Neoprene or nitrile gloves (with latex liner gloves) <br /> i <br />