Laserfiche WebLink
1 <br /> i <br /> Project No.034-98081 <br /> E Page No. 7 <br /> Based on the work to be performed the type of chemical hazards that may be encountered, EPA <br /> Level D personal protection has been determined to be adequately protective and suitable for most of the <br /> tasks in this project. Certain tasks may require a higher level,-of protection, such as air-purifying or <br /> y air-supplied respirators. These determinations will be made by the Safety Officer or Safety Task Leader and <br /> f <br /> will be specified as amendments to this section of the plan. <br /> 3.1 Potential Fire/Explosion Hazard 4 <br /> Due to the flammable nature of the hydrocarbons, explo sive vapor conditions will be carefully ! <br /> monitored by the Krazan&Associates task leader. Lower explosive limit(LEL)measurements will be taken <br /> using the AID and documented. The LEL for gasoline hydrocarbons is approximately 1.4% in air. Using p <br /> a 10-fold safety factor, a working criteria of 1400 ppm (10% LEL)as measured by a PID is established for <br /> q <br /> explosion hazards. When measurements obtained near the borehole reveal this concentration, or above, <br /> i <br /> work will be stopped. Additionally, the field crew will be instructed to stay upwind until these <br /> concentrations diminish. i <br /> 3.2 Potential Health Hazards <br /> Depending on the conditions encountered, the Task Leader in coordination with the Project Safety i <br /> 4 <br /> Officer may increase or decrease the level of personal protection required of all field team members. Such <br /> decisions will be made based on initial and periodic measureixent of:breathing zone concentrations of <br /> petroleum constituents by PID and on other data collected as work is conducted on a given site. <br /> Generally speaking, EPA Level D Personal Protection will be in accordance with the following <br /> guidelines: <br /> r <br /> • Krazan & Associates technician uniform <br /> • Hard hat <br /> . , Safety glasses <br /> • Ear plugs (as required) <br /> • Steel-toe boots. <br /> Some general guidelines representing.EPA Level C personal protection that may be used are: <br /> + Tyvek&coveralls(ore equivalent), neoprene boots and rubber gloves(to be worn by <br /> any personnel who handle contaminated drilling.-equipment. <br /> • Individuals at drilling sites not directly exposed"to contaminated soils or liquids J <br /> may not need to wear Tyvek®coveralls due to the increased hazards of heat stress <br /> when wearing this type of clothing. <br /> KRAZAN & ASSOCIATESi"INC. <br /> Offices Serving the Western United States <br />