Q: What is a "safe" or "acceptable" level of lead in ceiling dust?

    A: Jason Bawden-Smith, Managing Director of JBS Environmental and one of Australia's most experienced and qualified lead risk assessor's, answers this question with the following statement on his analysis reports:

Ceiling Dust Biohazard Levels (parts per million)

  • Low biohazard < 300 ppm

  • Moderate biohazard 300 - 2000 ppm

  • High biohazard 2000 + ppm [=2000 mg/kg (milligrams per kilogram) or 0.2% lead]

  • ** Please note there is no interpretation criteria for ceiling dust levels in Australia. The above biohazard ratings have been developed by JBS following many hundreds of lead hazard investigations and are for use as a guideline only. The NSW Health Department has verbally advised our office that they view levels above 1000 mg/kg lead in ceiling dust may pose a health risk to pre-school children if accessible.”

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