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State officials are considering a proposed level of 6 parts per billion, but some environmental and health groups said the level should be 1 or 2 parts per billion to ensure protection of the health of infants and others who are vulnerable to the effects of perchlorate contamination. Provides aromatic amine extractables below 20 parts per billion, and is compliant with recent European standards. However, the Pentagon and defense contractors objected, saying levels as high as 200 parts per billion should be allowed. |
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