UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

		     WASHINGTON, D.C. 20460

							                                              OFFICE OF

				PREVENTION, PESTICIDES

	AND TOXIC SUBSTANCES

	

August, 25, 2008

MEMORANDUM

SUBJECT:	Response to Product Chemistry Comments on the Revised Risk
Assessments for Wood Preservatives Containing Creosote

FROM:	A .Najm  Shamim, PhD.,

Regulatory Management Branch II

Antimicrobials Division (7510P)

THROUGH:	Norm Cook, Chief

Risk Assessment and Science Support Branch

Antimicrobials Division (7510P)

TO:		Jacqueline Campbell-McFarlane, Chemical Review Manager

		Regulatory Management Branch 1

Antimicrobials Division (7510P)

DP barcode:

	This document presents the Antimicrobials Division’s Regulatory
Management Branch II ’s formal response to the  Product Chemistry
comments received on the 2008 revised risk assessments for wood
preservatives containing arsenic and/or chromium.  These comments were
received during the 60-day public comment period that ended on June 16,
2008. 

	

Comment: EPA-HQ-OPP-2003-0248-0057.1: by Charles Web: Creosote Council.
The comment discusses the misperception in the public arena about the
constituents of creosote. Creosote can be obtained form various sources:
coal tar, tar, as well as from petroleum. The relative concentrations of
the constituents are different from each source.

EPA Response: This is not a direct comment on the product chemistry of
creosote. The Agency has included the physical/chemical characteristics
and the relative concentrations of the constituents of the P1, P2 and
P13 fractions of creosote extracted from wood coal tar.

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