Section 620.615  Additional Health Advice for Mixtures of Similar-Acting Substances

a)         The need for additional health advice appropriate to site-specific conditions shall be determined by the Agency when mixtures of chemical substances are detected, where two or more of the chemical substances are similar-acting in their toxic or harmful physiological effect on the same specific organ or organ system.

b)         If mixtures of similar-acting chemical substances are present, the procedure for evaluating the mixture of such substances is specified in accordance with Appendices A, B, and C.