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QUESTION: What levels of lead in accumulated dust on floors and top of cabinets do you think presents a health issue? - 29 Aug 2007 Michigan, USA

What levels of lead in accumulated dust on floors and top of cabinets do you think presents a health issue.

ANSWER: 09 Jun 2009

Dear Mr Carl,

We deeply apologize for the tremendous delay in response to your question. For a while, we have had a lack of staff who answer all the incoming email. Regarding your question on the dangerous levels of lead in accumulated dust on floors and top of cabinets, Jason Bawden-Smith, lead assessor of JBS Environmental, answers this question with the following statement:

"Ceiling Dust Biohazard Levels" (parts per million)
  • Low biohazard <300 ppm [300 mg/kg (milligrams per kilogram)]
  • Moderate biohazard 300 - 2000 ppm
  • High biohazard 2000 + ppm

If you are interested in reading further, I would recommend this link on our website: Thirty Thought-Starters on Ceiling Void Dust in Homes

Again, apologies for the delay.

Regards,

Iman Hegazi

MBBS, MD. Forensic Medicine and Toxicology

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