RTW/EPA/C547 Page 1 of 2 March 6, 2014

Document Processing Desk (Propargite Registration Review)
Pesticide Re-evalu ation Division Office of Pesticide Programs (7508P) Office of Chemical Safety and Pollution Prevention U.S. Environmental Protection Agency 2777 S. Crystal Drive Arlington, Virginia 22202-4501

Attention: Ms. Wilhelmena Livingston Re-evaluation Division Risk Manage ment and Implementation Branch IV ( 7505P )

Subject : Proposed Propargite Label Chan ges/Pending Registration Review - Initially Presented in Meeting Notes: Propargite Salmonid Teleconference on December 13, 2012 with EPA & NMFS/NOAA. Omite Technical (400-095), Omit e-57E (400-083), Omite-6E (400- 089), Comite (400-104), Comite II (400-154), Omite-30WS (400- 427), Omite-30W (400-565)

Dear Ms. Livingston,

In mid-February 2014 you asked Chemtura Corporation if we would re-visit some proposed propargite label changes that were offered dur ing the salmonid BiOp discussions with EPA & NMFS/NOAA as related to a joint teleconference on December 13, 2012. Such would be incorporated in the soon to ta ke place draft Work Plan assessments for propargite, although the salmonid final BiOps court-ordered date is currently on hold/to be published. Chemtura has already done/will subm it the following in all associated propargite formulation labels during the Registration Review process by th e end of 2014. Status/comments are added in [brackets] for informational purposes.

- A ‘fast-track’ label amendm ent at EPA concerning Co mite II (400-154) has been replaced with a label additionally exhibi ting “NOT TO BE US ED IN CALIFORNIA, IDAHO, OREGON OR WASHINGTON”. This rein forces our previous statement that
this formulation is not used west of th e Rocky Mountains. [EPA stamped the label on Feb. 8, 2013]

- A correction to “Summary of all active labels for pesticide products containing propargite (Chemtura comments rtw Oct. 23, 2012)” for 400-104/CA-820083 SLN on cotton was given. The single application rate , maximum number of applications per year, and annual application amount do correspo nd to that on the federal label (1.6 lbs Chemtura Corporation

199 Benson Road Middlebury, CT 06749

203-573-2000 tel

203-573-2958 fax

www.chemtura.comMs. Wilhelmena Livingston March 6, 2014

EPA/RTW/547 Page 2 of 2 a.i. per acre, 2, and <3.3 lbs a.i. per acre, respectively). [this was an informational comment at the time]

- Add statement suggesting in clusion of a drif t control agent in the spray tank.

- For applications in the 4 states of con cern: “Choose only nozzles and pressures that produce a medium or coarse droplet size (>250 microns volume median diameter).”

- For aerial application in the 4 states of concern: limit aerial application volume to ≥ 10 gallons per acre.

- Currently 400-104/CA-830024 SLN on alfalf a exhibits no maximum application number per year; this will be changed to no more than 2 applications per year. [approved in California April 23, 2013]

- Since the non-bearing avocado use was removed from labeling, the walnut use exhibited the highest single application rate. The walnut use rate wi ll be reduced from
4.5 lbs a.i./acre to 3.2 lbs a.i./ acre. This rate is now equiva lent to some other crops as the highest labeled rate for propargite.

Although not part of the discussion, additiona lly Chemtura will also reduce the maximum application number from 3 to 2 for roses/or namentals. Thus 2 applications will be the
maximum number across all formulations and al l crops. Any contrary SLNs outside these
states will also be amended.

Should you have any questions regarding this communication, please co ntact R. Tim Weiland
at 203-573-2027 or email: tim.weiland@chemtura.com

.

Sincerely,

Chemtura Corporation

Allen R. Blem Crop Registration Manager, North America

Copy: Richard Gebken, EPA Insecticide Branch, PM Team 10