The 7.5 x 10-6 risk EA goal for carcinogens applies to all the emission points for a single TAC from the entire facility. How is the risk from new or modified equipment added to that?
Response: [Please note that the 7.5 x 10-6 risk EA goal for carcinogens (Regulation 5.21 section 2.5.3) applies to the cumulative risk from all applicable carcinogenic TACs at the stationary source, not to a single carcinogenic TAC as stated in the question.] The 7.5 x 10-6 risk EA goal includes existing P/PE and any future N/M P/PE. Thus, the addition of additional carcinogenic risk would be required to fit within this amount to meet the EA goal. This could mean a reduction in the risk from either the N/M P/PE or existing P/PE.
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