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1 <br /> Level B PPE. A quarter or half-face air purifying respirator can be used for airborne <br /> PCB concentrations below 5 m m' A full-face respirator can <br /> � p be used for airborne PCB <br />/ levels not exceeding 25 mg/m3 will require an upgrade to Level B PPE. <br /> When the workplace atmosphere has been characterized,this information, along with <br /> data on the toxicity of the contaminants present, will be used to determine the level of <br /> PPE required in the work area. <br /> 1 <br /> It is not Avalon's policy to have its staff perform work requiring Level B protection If <br /> it is determined that conditions warrant Level B protection, work will stop until the <br /> contractor's previous experience conducting drilling, sampling or removal operations <br /> in level B protection is verified or until training for Level B work is given to contractors <br /> 1 by qualified personnel and until Avalon determines if a separate subcontractor will be <br /> retained to conduct Level B operations or whether to have the current contractors <br /> conduct the operations with ESC maintaining an oversight role(observing from outside <br /> the immediate work zone) <br />! The PID will be calibrated at least once at the start of each operating day or when the <br /> instruments supply erratic readings In case of a malfunction, backup equipment will <br /> be delivered to the site Calibration procedures are given in Appendix H <br /> 8.1 Personal Protective Equipment <br /> Level C personal protective equipment (PPE) for the Won's Cleaners site (if <br /> necessary) will consist of the following equipment <br /> • dual cartridge full-face air purifying respirator (NIOSH approved) <br />! <br /> • organics, dust, and pesticide respirator cartridges (MSA cartridges GMA- <br /> H, GMC-H, GMC-S) <br /> • Tyvek or Saranex-coated Tyvek coveralls <br /> I <br /> • steel-toed work boots <br /> • PVC surgical or latex gloves (to protect from direct dermal contact with <br /> PCE in site soil, dermal absorption of solvents is an insignificant <br /> exposure pathway as liquid solvents are not present in site soils ) <br /> • hard hats, required when heavy equipment is being used <br /> Level D PPE will consist of the same items as those for Level C Respirators, <br /> Tyveks, outer booties and PSVC surgical or latex gloves will be available but <br /> Avalon Environmental Consultants 9627-001-7 <br /> Kashmar Singh Joes Truck Plaza <br /> i February 1, 2002 12 Lathrop, California <br />