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04 January 2013 AGE -NC Project No. 12-2179 Page 11 of 16 workers for protection against the designated hazards at the site. Where respiratory protection is used for nuisance dust, the following requirements shall be followed: Only NIOSH -approved dust masks will be used. Dust masks will not be reused and will be disposed of daily after use. AGE personnel participate in a Corporate Respiratory Protection Program meeting the requirements of CCR §5144. It is expected that Contractors and subcontractors whose personnel may be required to utilize respiratory protection will have a similar program, however its specific elements will not be reviewed or approved by AGE, who assumes no responsibility for inadequate employee respiratory measures. Each subcontractor is individually responsible for the adequacy of its own respiratory protection program. Body Protection Protective clothing and body protection is selected on the basis of the tasks to be performed and the hazards, both chemical and physical, to which the worker may be exposed. For all work areas, including the "clean" support and administrative areas, appropriate work clothing will be worn that at least covers from the top of the boot to the neck and shoulders. Tank tops are not appropriate. Bathing suits, shorts, and cut-off pants are not appropriate. In more hazardous work areas, substantial pants and long sleeves are appropriate. Chemical -protective body protection will be selected using predicted chemical exposures and the clothing manufacturer's chemical specific permeation and degradation information to provide optimum protection. CHEMICAL PROTECTIVE ENSEMBLES In order to aid in the selection of personal protective equipment (PPE), various ensembles have been developed which provide increasing levels of protection. These ensembles are designated, in increasing levels of complexity and protection, as Levels D, C, B, and A. The specific equipment comprising each level of protection will vary slightly, but are defined primarily by the type of respiratory protective equipment used, and secondly by skin protection. The information presented below consists of a description of the equipment, applications and limitations for ensemble, which might be utilized during construction activities. Upgrade criteria will be linked to results of on-site monitoring activities. Advanced GeoEnvironmental, Inc.