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Keywords: negative exposure assessment
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Proceedings Papers

Paper presented at the ASSE Professional Development Conference and Exposition, June 19–22, 2017
Paper Number: ASSE-17-611
... negative exposure assessment exposure assessment standard require employer engineering control employer medical surveillance us government work environment concentration proppant upstream oil & gas exposure control plan objective data new silica standard Session 611 The New Silica...
Proceedings Papers

Paper presented at the ASSE Professional Development Conference and Exposition, June 11–14, 2006
Paper Number: ASSE-06-636
... Albany, New York John Freitas, B.S. URS Corporation Salem, New Hampshire M. Douglas Mueller, B.S., M.S., CIH URS Corporation Fort Washington, Pennsylvania Introduction The US Postal Service Northeast Area conducted what we believe to be the nation s first Negative Exposure Assessment for cleaning up...

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