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3.4 POTENTIAL CHEMICAL HAZARDS <br />Chemicals of Concern <br />The primary modes of possible exposure of site personnel to hazardous chemicals during <br />this project are through skin contact with contaminated soil and through inhalation of <br />airborne vapors containing chemicals of concern. Ingestion of contaminated soil is <br />another potential mode of exposure. Field personnel will minimize potential chemical <br />hazards by avoiding direct contact with groundwater, soil and by use of protective <br />equipment as discussed below. <br />3.5 EXPOSURE MINIMIZATION <br />Field personnel will minimize potential exposure to chemical hazards by avoiding direct <br />contact with groundwater, surface water and soil through the use of protective equipment. <br />Safe work practices, including restriction of eating, drinking or smoking in the sampling <br />areas will also be enforced at the worksite to minimize potential contact and ingestion of <br />soil.. Workers will thoroughly wash after removal of their personnel protective <br />equipment. Respiratory protective measures are discussed below. <br />3.6 PROTECTIVE ACTIONS <br />Personal Protective Equipment <br />I <br />Clear Heart Drilling field personnel will wear equipment to protect against the potential <br />physical and chemical hazards, which may have been identified herein and those that <br />become apparent in the field. Level D protection will be required at a minimum for field <br />activities at the site. Level D personal protective equipment to be used will include: <br />• Hard hat <br />• Coveralls (cloth or Tyvek) <br />• Chemical resistant disposable gloves <br />• Boots, steel toe, and/or rubber, steel toe <br />• Safety glasses and earplugs <br />The level of protection employed for general site activities by Clear Heart Drilling <br />personnel may be upgraded, as deemed necessary by the Site Safety Officer. If dust <br />generation occurs or vapors are encountered, the Site Safety Officer may require <br />modified Level C protection, i.e., donning of respirator and use of Tyvek coveralls. <br />Modified Level C protection includes: <br />• Respiratory protection consisting of a half -mask air purifying respirator wi <br />organic vapor or combined organic vapor/HEPA filter cartridges <br />