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TOXICOLOGICAL PROFILE FOR BARIUM AND COMPOUNDS ...

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A-4<br />

APPENDIX A<br />

(18). Estimated Upper-Bound Human Cancer Risk Levels This is the range<br />

associated with the upper-bound for lifetime cancer risk of 1 in 10,000<br />

to 1 in 10,000,000. These risk levels are derived from EPA's Human Health<br />

Assessment Group's upper-bound estimates of the slope of the cancer dose<br />

response curve at low dose levels (q 1<br />

*).<br />

(19). Key to LSE Figure The Key explains the abbreviations and symbols used in<br />

the figure.

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