	UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

				WASHINGTON, D.C. 20460

Office Of

Prevention, Pesticides

And Toxic Substances

MEMORANDUM

Date:  	May 9, 2006 

Subject:	Carbaryl:  Data Evaluation Record For MRID 464482-01;
Determination of Dermal and 				Inhalation Exposure to Workers during
Application of a Liquid Pesticide Product by 				Open Cab Airblast
Application to Orchard Crops; PC Code 056801; DP Barcode 316628

From:		Jeffrey L. Dawson, Chemist

		Reregistration Branch 1 

		Health Effects Division (MC 7509C)

Through:	Whang Phang, Ph.D., Branch Senior Scientist

		Reregistration Branch 1 

		Health Effects Division (MC 7509C)

To:		Christina Scheltema

		Chemical Review Manager

		Special Review & Reregistration Division

This document serves as the data evaluation record for the Agricultural
Handlers Exposure Task Force study conducted using open cab tractors and
airblast sprayers with carbaryl.  The intent of this study was to
quantify exposures to applicators who wore typical work clothing (i.e.,
long pants, shoes, socks, long-sleeved shirt), chemical resistant
gloves, no respirators, and either a "SouWester" hat or hooded tyvek
jacket.  The review of this study was conducted jointly between the U.S
EPA, Health Canada, and the California Department of Pesticide
Regulation (DPR).  A secondary review document was completed by Health
Canada which contains the unit exposure values that were agreed upon
jointly by the three regulatory Agencies (Appendix A).  The primary
reviews and attached calculations, upon which the secondary review was
based, were completed by the U.S. EPA and DPR.  These are contained in
Appendices B through D.  No significant technical flaws were identified
with the study that would prohibit its use for risk assessment purposes.

It is recommended that the values presented in Appendix A, Tables 9 and
10 be used for risk assessment purposes in the United States as the
values represent unit exposure levels based on the pounds of active
ingredient handled.  These include:

Scenario	N	Unit Exposures (µg/lb ai handled)



Dermal	Inhalation

"SouWester" Hat	15	70.31	3.08

Hooded Tyvek Jacket	10	53.41	1.22

Unit exposures are arithmetic means.  Inhalation values based on 16.7
Lpm inhalation rate.





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Appendix A



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Appendix B



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Appendix C



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Appendix D

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