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Clayton <br /> 1. <br /> • Toluene <br /> This material is a flammable, colorless liquid and has.- <br /> - <br /> as:- Maximum concentration in the soil = 0.050 ppm <br /> - Flash point = X10°F <br /> - TLV in the air = 100 ppm <br /> - STEL = 150 ppm <br /> - OSHA PEL (8-hour TWA) = 100 ppm <br /> - OSHA STEL = 150 ppm <br /> • Xylene <br /> This clear liquid has: <br /> - Maximum concentration in the soil = 0.73 ppm <br /> - Flash point = 100°F <br /> - TLV in the air = 100 ppm <br /> OSHA PEL (8-hour TWA) = 100 ppm <br /> - OSHA STEL = 150 ppm <br /> 6? PHYSICAL HAZARDS <br /> The main physical hazards of deep excavations and soil aeration result from the <br /> following: <br /> • Dangers presented by heavy equipment <br /> • Failure to maintain clearance for rotating excavators and backhoe <br /> • Working around excavated holes <br /> • Dust emission ingestion and inhalation <br /> Because we anticipate the final depth of the excavation to be between 8 and 11 <br /> feet, the excavation sidewalls will be sloped on a 1:1 ratio, thereby eliminating the <br /> risk of sidewall collapse and the danger of falling into the hole. If the excavation <br /> hole is.to be entered; safety procedures for working in confined spaces will be <br /> strictly enforced.. <br /> 7.0 REQUIRED PROTECTION <br /> .......... <br /> At a minimum, Level D of protection will be applied in the work zone. That is, <br /> fieldpersonnel and visitors are required to wear the following clothing and <br /> equipment: <br /> • <br /> Hard hat - <br /> Safety glasses <br /> Safety shoes <br /> Gloves <br /> Hearing protection . <br /> 4_ <br /> :y5)LOLiLEA <br />