Comment submitted by John S. Hayden, Vice President, Environment, Safety & Health, National Stone, Sand and Gravel Association (NSSGA)

Document ID: EPA-HQ-ORD-2007-0517-0080
Document Type: Public Submission
Agency: Environmental Protection Agency
Received Date: October 13 2009, at 12:00 AM Eastern Daylight Time
Date Posted: October 16 2009, at 12:00 AM Eastern Standard Time
Comment Start Date: August 31 2009, at 12:00 AM Eastern Standard Time
Comment Due Date: October 13 2009, at 11:59 PM Eastern Standard Time
Tracking Number: 80a414e6
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This is comment on Notice

Extension of Public Comment Period: Second External Review Draft Integrated Science Assessment for Particulate Matter

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Attached are the comments of the National Stone, Stone, Sand & Gravel Association for EPA Docket # EPA-HQ-ORD-2007-0517.

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Comment attachment submitted by John S. Hayden, Vice President, Environment, Safety & Health, National Stone, Sand and Gravel Association (NSSGA)

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Comment attachment submitted by John S. Hayden, Vice President, Environment, Safety & Health, National Stone, Sand and Gravel Association (NSSGA)

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Comment submitted by Daniel S. Greenbaum, President, Health Effects Institute (HEI)
Public Submission Posted: 10/06/2009 ID: EPA-HQ-ORD-2007-0517-0075