UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON D.C., 20460


## APR 242014

OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION



### MEMORANDUM

SUBJECT: Revised Usage Report in Support ofa Registration Review Preliminary Risk Assessment Purposes for the Insecticide Hexythiazox, PC Code# 128849

FROM:

THRU:



### TO: Jihad Alsadek, Ph.D., Economist 

## .:7

# ~~ A-

# -A~ Science and Information Analysis Branch Biological and Economic Analysis Division (7503P)
Diann Sims, Chief

# Af-~i,n**~dw--­** Science Information and

### An**sis** B;anc i;

### ~ Biological and Economic Analysis Division (7503P) Molly Clayton, CRM Risk Management and Implementation Branch III Pesticide Re-Evaluation Division (7508P)
This memorandum transmits the revised Screening Level Usage Analysis (SLUA) report for Hexythiazox. Please refer to the coversheet ofthe SLUA for an explanation ofthe data sources and other information that describes the report content. Also, please refer to the footnotes ofthe SLUAreport for an explanation ofsymbols used to characterize the data.
For questions, comments and other usage or label use information requests, please contact me at 703-308-8140. ·

cc: Tracy PerryHexythiazox (128849) Screening Level Usage Analysis (SLUA) Date: April23, 2014
What is a Screening Level Usage Analysis (SLUA)?
• Available estimates ofpesticide usage data for a particular active ingredient that is used on agricultural crops in the United States.
• Pesticide usage data obtained from various sources. The data are then merged, averaged, and rounded so thatthe presented information is not proprietary, business confidential, or trade secret. What does it contain?
• Pesticide usage data for a single active ingredient only.
• Agricultural use sites (crops) that the pesticide is 

### reportedto be used on. • Available pesticide usage information from U

.S. states thatproduce 80% ormore ofa crop, in most cases, or less than 80%, inrare cases, depending onthe scope ofthe survey and available resources. • Annual percent ofcrop treated (average & maximum) for each agricultural crop. • Average annual pounds ofthe pesticide applied for each agricultural crop (i.e., for the states surveyed, not for the entire United States). What assumptions can 

### I make about the reported data?
• Average pounds ofactive ingredient applied- Values are calculated by merging pesticide usage data sources together; averaging across all observations, then rounding. 

### Note: 

## If the estimatedvalue is less than 500, then that value is labeled <500. Estimatedvalues between 500 & 

### <1, 000,000 are roundedto 1 significant digit. Estimatedvalues of 1,000, 000 orgreater are rounded to 2 significant digits.)
• Average percent ofcrop treated- Values are calculated by merging data sources together; averaging by year, averaging across all years, & rounding to the nearest multiple of5. 

### Note: 

## If the estimatedvalue is less than 2

.5, then the value is labeled <2

.5. 

## If the estimatedvalue is less than 1, then the value is labeled <1.
• Maximum percent ofcrop treated

- Value is the single maximum value reported across all data sources, across all years, & rounded up to the nearest multiple of5. 

### Note: 

## If the estimatedvalue is less than 2.5, then the value is labeled <2

.5

. What are the data sources used?
• USDA-NASS (United States Department ofAgriculture's National Agricultural Statistics Service)- pesticide usage data from 2004 to 2012

. • Private pesticide market research- pesticide usage data from 2004 to 2012.
• California Department ofPesticide Regulation (DPR) Pesticide Use Reporting (PUR) data for 2004 to 2011. What are the limitations to the data?
• Additional registered uses may existbut are not included because the available surveys do not report usage (e

.g., small acreage crops).
• Lack ofreported usage data for the pesticide on a crop does not imply zero usage. • Usage data on a particular site may be noted in data sources, but not quantified. In these instances, the site would not be reported in the SLUA.
• Non-agricultural use sites (e.g., turf, post

-harvest, mosquito control, etc.) are not reported in the SLUA. A separate request must be made to receive these estimates.
• Some sites show some use, even though they are not onthe label. This usage could be due to various factors, including, but not limited to Section 18 requests, existing stocks ofthe chemical, data collection errors, and experimental use permits (EUPs).

### Date: April23, 2014 Screening Level Estimates ofAgricultural Uses ofHexythiazox (128849) Sorted Alphabetically Reporting Years: 2004-2012 Average Percent Crop Treated Crop 1 Alfalfa 2 Almonds 3 Apples 4 Apricots 5 Beans, Green 6 Caneberries 7 Cherries 8 Corn 9 Dates 10 Dry Beans/Peas 11 

### Grapes 12 Nectarines 13 Oranges 14 Peaches 15 Pears 16 Pecans 17 Plums/Prunes 18 Pluots 

## * 19 Potatoes 20 Strawberries 21 Sweet Com 22 Tangerines 23 Tomatoes 24 Walnuts

All numbers are rounded. <500: Jess than 500 pounds ofactive ingredients. <2.5: less than 2.5 percent ofcrop is treated. <1 : less than 1 percent ofcrop is treated. 

### Lbs. A.I. <500 10,000 1,000 <500 <500 1,000 <500 4,000 <500 <500 1,000 1,000 1,000 2,000 <500 <500 1,000 <500 1,000 3,000 1,000 1,000 <500 3,000



### * Based on CA DPR data only (80% ormore ofU.S. acres grown are in California) NC: not calculated, only pounds a.i. available

. SLUA data sources include: 

### Average <1 10 <2.5

5 <1 15 <2..5

<1 15 <1 <1 15 <1 10 <2.5

<1 5 NC <1 25 <2.5

15 <1 5

USDA-NASS (United States Department ofAgriculture's National Agricultural Statistics Service) Private Pesticide Market Research California DPR (Department ofPesticide Regulation) These results reflect amalgamated data developed bythe Agency and are releasable to the public. 

### Maximum <2.5

20 5 10 <2.5

25 10 <2.5

15 <2.5 <2.5

20 <2.5

15 10 <2.5

15 NC <2.5

45 <2.5

15 <2.5

15