Posting an FDMS Docket without an FR Notice

MEMORANDUM

SUBJECT: Docket EPA-HQ-OPP-2010-0405 Open for Public Access

DOCKET TITLE: Pesticide Product; Registration Issuances For Pip Seed Blends

FROM: Mike Mendelsohn, Senior Regulatory Specialist

Microbial Pesticides Branch Biopesticides and Pollution Prevention Division

Thru: W. Michael McDavit, Acting Director Biopesticides and Pollution Prevention Division

This memorandum authorizes the posti ng of the document(s) in docket EPA-HQ2010-0405 to Regulations.gov for public access. Pl ease note that this action is part of the public participation pro cess for registration actions.

The following document(s) will be available for public comment from April 30, 2010 to
June 1, 2010.

A. EPA Biopesticide Regulatory Action Document Optimum AcreMax Bt Corn

Seed Blends



## , April 30, 2010



## .

B. OAM1 10% Blend Label

C. OAMRW 10% Blend label

The following document(s) serv e as additional background to the Optimum AcreMax Bt

Corn Seed Blends BRAD.

A. EPA Science Assessment of Pion eer’s modeling addenda (MRIDs 478710-01, 478879-01, and 479108-01) in support of thei r application of registration for Optimum AcreMax1 Insect Protection, 2/4/2010.

B.EPA Science risk assessment to evaluate the durability of a 10% Cry34/35 seed blend refuge deployment of Cry34/35 corn rela tive to the durabilit y predicted for a 20% block in regards to Pioneer/DuPont’s Optimum AcreMax1 (EPA Reg. No. 29964-A), 4/22/2010.2 C. EPA Review of ABSTC's 2007 and 2008 Com In sect Resistance Management Compliance Assurance Program [EPA Registration Nos. 524-489, 68467-2, 67979- 1, 29964-3,524-528,524-55 1, 68467-5,67979-5, 29964-4, 524-545, 524-552, 68467- 6,67979-8, and 29964-5; MRlDs 4733396-01 and 476633-01, 4/15/2009.

D. EPA Review of Pioneer’s Benefits Document in Support of a Sec(3) Product Registration for Optimum® AcreMaxTM 1 In sect Protection, also known as Stack Herculex XTRA (Cry34/35Ab1 +Cry1F) with Herculex I (Cry1F, refuge seed for CRW) [MRID 473567-10 and suppl emental data], 9/22/2008.

E. EPA MRID Numbers 47663301, 47339601, 47683801, 47910801, 47887901, 47871001, 47356710, 48066001, 48075401, and 48076501.

F. Grant RH and KP Seevers. 1989. Local and long-range movement of adult western corn rootworm (Coleoptera: Chrysomelidae) as evidenced by washup along southern lake Michigan shores. Envir. Entomology, Vol. 18 (2): 266-272

G. Meinke LJ, TW Sappington, DW Onst ad, T Gullemaud, NJ Miller, J Komaromi, N Levay, L Furian, J Ki ss, and F Toth. 2009. Western corn rootworm (Diabrotica virgifera vi rgifera LeConte) population dynamics. Agricultural and Forest Entomology, Vol.11: 29-46

H. Naranjo SE. 1990. Comparative flight behavi or of Diabrotica vi rgifera virgifera

and Diabrotica barberi in th e laboratory. Ent. Experimantalis et Aplicata, Vol.

87: 383-394

I. Nowatzki TJ, N Bradley, KK Warren, S Putnam, LJ Meinke, DC Gosselin, FE Harvey, TE Hunt, and B Siegfried. 2003. In-field labeling of western corn rootworm adults (Coleoptera: Chryso melidae) with Rubidium. Journal of Economic Entomology, Vol. 96(6): 1750-1759.

J. Pioneer 5/22/2008 Letter and Supplemental Data to MRID No. 47356710.

K. Scott IA, JL Spencer, TR Mabry, and E Levine. 2004. Influence of atmospheric conditions on high-elevation flight of Western corn rootworm (Choleoptera: Chrysomelidae). Environmental Entomology, Vol. 33(3):650-656

L. Van Woerkom GJ, FT Turpin, & JR Barret Jr. 1983. Wind effect on western corn rootworm (Coleoptera: Chrysome lidae) flight behavior. Environmental Entomololgy, Vol 12: 196-200

M. Witkowski JF, JC Owens, and JJ Tollefson. 1975. Diel activity and vertical flight distribution of adul t western corn rootworms in Iowa cornfields. Journal of Economic Entomology, Vol. 68: 351-352.

Should you have any questions regarding this memorandum, please contact me at (703) 308-8715, or via email at mendelsohn.mike@epa.gov.