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

### OCT 

## 10 2012

MEMORANDUM OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION

SUBJECT: 

### BEAD Chemical Profile for Registration Review: Prometon (080804) FROM: 

### Bill Phillips, Ph.D., Agronomis Biological Analysis Branch

THRU:

TO: 

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### i't~k_ Jiha A sa e , P .D., Economist v VI"\..A#f 

### Science Information and Analysis Branch 

### JohnFaulkner,Ph.D.,Economist

# n~fAN\**~** Economic Analysis Branch 

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### Biological and Economic Analysis Division (7503P) Arnet Jones, Chief Biological Analysis Branc Diann Sims, Chief

# A,l. Science Information and Analysis Branch Timothy Kiely, Chief 

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# \AJ\._~**·** Economic Analysis Branch 

### 11 

## V Biological and Economic Analysis Divisio 7503P) Kaitlin Keller, Chemical Review Manager Risk Management and Implementation Branch 3 Pesticide Re-evaluation Division (7508P) 

### Product Review Panel date: October 3, 2012 INTRODUCTION 

### The purpose ofthis document is to convey usage information and a broad overview ofthe pest management roles ofpesticides that are beginning to undergo registration review. The anticipated audience consists ofthe team ofEPA staffcurrently evaluating the registration status ofprometon, and eventually the general public. This documentbuilds uponthe data already provided inthe "Usage and Label Use DataPackages" that are also provided to Registration 1Review teams by BEAD. The document is based on information and data available to BEAD as of26 September 2012. Prometon is a non-selective triazine herbicide that is classified bythe Weed Science Society of America as a group five herbicide withthe mechanism ofaction ofinhibiting the photosystem II part ofphotosynthesis. This herbicide controls broadleafand grass weeds when applications are made priorto weed emergence orpostemergence to the weed; however, woody brush ortree weeds are not . controlled unless prometon is applied in a mix ofoil such as diesel fuel. Use sites are those that require total vegetation control resulting inbare ground for betweenone and two years following a single application. The primary means ofweed control is through root uptake and therefore rain orirrigation is required to move the herbicide into the root zone where it canbe taken up by plants.


### COMMON FORMULATIONS AND APPLICATION METHODS Prometon is formulated as granules, peletted/tabulated, wettable powder, emulsifiable, flowable soluble concentrate, and solution-ready-to use. Application methods include boom sprayers, handheld nozzle orwand sprayers, knapsack sprayers, and granular spreaders.


### USE SITES Agricultural Uses There are no agricultural uses for this herbicide. Non-Agricultural Uses Prometon is currently registered for use ondomestic dwellings (outdoor), commercial/industrial areas, drainage ditch banks, farm buildings (indoor/outdoor), ornamental turf, residential areas, uncultivated non-agricultural areas, airports/landing fields, fencerowslhedgerows, nonagricultural right-of-way, paths/patios, paved areas(private roads/sidewalks), recreational areas, and utility poles. Non-agricultural uses ofprometonregistrations include weed control as a spottreatment around the residences, driveways, patios, buildings, storage areas, fences, pumps, machinery, fuel tanks, recreational areas, guard rails, airports, military installations, highway medians, pipelines, railroads, lumberyards, rights-of-way, and industrial sites (such as transformers, vaults, buried cable closures). The majority ofprometonuse is associated with weed control along fencerows and building perimeters, with smaller usage on other industrial sites (i.e., pump stations, tanks, pipelines, pipe 2storage areas), rights-of-way areas (i.e., airports, railroads, and medians), and residential areas. Based on usage information provided by the registrant, total annual sales ofprometon are approximately 550,000

- 600,000 pounds ofa.i.: approximately 60% is applied to building perimeters orfencerows; 30% is applied to industrial sites; and <10% is applied to rights-of-way areas. According to the registrant, geographical use areas representing the greatest use include the following: Midwest, South, and Southeast, with lower demand inthe Northwest and the Northeast. Use ofprometon-containingproducts is restricted inTexas, Colorado, and Washington. (EPA RED, 2008) DATA NEEDS RELEVANT TO BEAD'S FUTURE WORK ON PROMETON Obtaining additional information, such as pounds active ingredient applied, application methods, application rates for risk drivers, and applicationtiming, on domestic dwellings (outdoor), commercial/industrial areas, drainage ditch banks, farm buildings (indoor/outdoor), ornamental turf, residential areas, uncultivated non-agricultural areas, airports/landing fields, fencerows!hedgerows, non-agricultural right-of-way, paths/patios, paved areas(private roads/sidewalks), and recreational areas, would improve future assessments ofthe importance of prometon and maybe required as part ofthe registration review ofthis pesticide: REFERENCES: USEPA. March 25, 2008. Reregistration Eligibility Decision: Prometon. http://www.epa.gov

### IoppOOOO 1 /reregistration!REDs/prometon-red.pdf Senseman, S.A. Herbicide HandbookNinth Ed. 2007. Weed Sci. Soc. ofAm
. Lawrence, KS 66044-8897 U
.S
.A.



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