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Triphenyltin hydroxide listed effective March 18, 2002 as known to the state of California to cause reproductive toxicity.

Extension of public comment period on the changed notice of proposed rulemaking establishing a  No Significant Risk Level: 4-Methylimidazole (4-MEI).

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Comment period for the Changed Notice of Proposed Rulemaking Specific Regulatory Levels Posing No Significant Risk: 4-Methylimidazole (4-MEI).

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The proposed NSRL for 4-MEI has been changed from 16 to to 29 micrograms per day.