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THA /Chemical Storage Facility! 1010 Industrial Drive, Stockton CA / Drilling HASP 5 Personnel protective equipment Heavy equipment/machinery Spill Containment 5. PERSONAL PROTECTIVE EQUIPMENT This section describes the general requirements of the EPA designated Levels of Protection (A through D) and the specific levels of protection required for each task at the site. For the activities planned for this site, Level D is the highest PPE level of protection anticipated. 5.1 EPA Levels of Protection Personnel shall wear protective equipment when response activities involve known or suspected atmospheric contamination or particulate that may be generated by site activities or when direct contact with skin-affecting substances may occur. The specific levels of protection and necessary components for each have been divided into four categories according to the degrees of protection afforded: Level A: Should be worn when the highest level of respiratory, skin, and eye protection is needed. Level B: Should be worn when the highest level of respiratory protection but a lesser level of skin protection is needed. Level B is the primary level of choice when encountering unknown environments. Level C: Should be worn when the criteria for using air-purifying respirators (APR) are met and a lesser level of skin protection is needed. Level D: Should be worn only as a work uniform and not in any area with respiratory or skin hazards. It provides minimal protection against chemical hazards. Modifications of these levels are permitted and routinely employed during site work activities to maximize efficiency. For example, Level C respiratory protection and Level D skin protection may be required for a given task. Likewise the type of chemical protective ensemble (i.e., material or format) will depend upon contaminants and degrees of contact. The level of protection selected is based upon the following: Type and measured concentration of the chemical substance in the ambient atmosphere and its toxicity. Potential for exposure to substances in air, liquid, or other material due to work being done. Knowledge of chemicals on-site along with properties such as toxicity, route of exposure, contaminant matrix, and adequate warning properties. In situations where the type of chemical, concentration, and possibilities of contact are not known, the appropriate Level of Protection must be selected based on professional experience and judgment until the hazards can be better identified. 5.2 Recommended Level of Protection Modified Level D is recommended for all aspects of this work including site reconnaissance, mobilization and demobilization, drilling, and soil/groundwater sampling. R:IProjectsITHA1003-Stockton Phase II ESAIDrillingIHASP McGinley and Associates, Inc.