Question Posed:
How do we calculate safe harbor levels under the Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65)?
Answer Provided:
There are many factors that determine safe harbor levels in a product. If we were to use an example of a part that carries the risk of skin exposure, factors to consider in determining the safe harbor level are:
- The concentration of the substance
- The number of times in a day skin contact is made, and length of skin contact with the product
- The surface area of the skin contact
- The dermal uptake/absorption rate
- The weight of the product user
Reference (BPA as an Example): https://oehha.ca.gov/media/downloads/crnr/03172016dermalbpamadlisor.pdf
**Article Contents Valid as of 2019-03-18
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