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WRD 23.30 Page 4 2. Wallboard systems with less than one percent asbestos content. Where full-depth sampling or reassessment of the wallboard system has been conducted in accord with section III.A of this document and the wallboard system is found to contain less than one percent asbestos or trace asbestos. L&I will not consider the work will an asbestos project. In such cases, WISHA enforcement staff must assess that the basic asbestos work practice requirements as given in WAC 296-62-17712(2),particularly use of wet, non-aggressive methods and prompt clean-up. Vacuums used must be HEPA filtered. Worker training must include asbestos awareness and hands on training as given in WAC 296-62-07722(5), Respiratory protection must be based on overall dust levels. A competent person must be assigned and trained under the requirements of WAC 296-62-07728. 3. Wallboard systems where no asbestos has been detected. Where appropriate sampling and analysis has been performed and no asbestos has been detected,no provisions of the asbestos standard will be enforced by WISHA compliance staff. Note: Lead and silica are also commonly found in wallboard systems and any work should be evaluated to ensure any significant hazard due to these materials is addressed. Even where no specific hazard is identified,care should still be exercised in demolition or other work involving the wallboard systems. Total particulate standards from WAC 296-62, Part H,will apply, as well as requirements for demolition in WAC 296-155,Part S. General work practices including misting of debris,non-aggressive work methods and prompt clean-up as given in III.B.2 above will help meet these basic requirements and control any low levels of contaminants not found during pre-work inspections. Approved: Michael Wood Senior Program Manager,WISHA Policy&Technical Services For further information about this or other WISHA Regional Directives,you may contact WISHA Policy& Technical Services at P.O. Box 44648 or by telephone at(360)902-5503. You also may review policy information on the WISHA Website (http://www.wa.gov/lni/wisha).