Document ID: EPA-HQ-OPP-2014-0232-0011
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2015-07-22T04:00Z

U. S. ENVIRONMENTAL PROTECTION AGENCY
                            Washington, D.C. 20460	
                        									            OFFICE OF
                                                         PREVENTION, PESTICIDES
                                                           AND TOXIC SUBSTANCES
                                                                       								
Date: 		September 2, 2014 
PC Code: 	124002
DP Barcode: 	418740

MEMORANDUM 					
                                                
Subject:	Drinking Water Assessment in Support of IR-4 New and Revised Uses of Novaluron (RIMON[(R)] 0.83 EC) on Avocado; Beans, Berries (Low-Growing), Bushberries, Carrot; Cotton, Cucurbit Vegetables, Fruiting Vegetables, Head and Stem Brassica, Leafy Brassica Greens, Ornamentals (Container Grown Ornamentals in Greenhouses, Shadehouses, Outdoor Nurseries), Peanuts, Pears, Pome Fruits, Potatoes / Sweet Potatoes, Sorghum, Soybeans, Stonefruits, Sweet Corn, Sugarcane, Swiss Chard, and Turnip Greens
            
To:	Julie L. VanAlstine, Environmental Health Scientist
	Charles (Billy) Smith, Branch Chief
	Risk Assessment Branch 1
      Health Effects Division (7509P)
      
      Sydney Jackson, Risk Manager Reviewer
      Barbara Madden, Minor Use Team Leader
      Risk Integration Minor Use, and Emergency Response Branch
      Registration Division (7505P)
      
      Jennifer Gaines, Risk Manager Reviewer 
      Reuben Baris, Product Manager Team 7
      Insecticide-Rodenticide Branch
      Registration Division (7505P)

From:		He Zhong, Ph.D., Biologist, 
	Sujatha Sankula, Ph.D., Branch Chief
	Meghan Radtke, Ph.D., Acting RAPL
		Environmental Risk Branch 1
            Environmental Fate and Effects Division (7507P)
		
The Environmental Fate and Effects Division (EFED) has completed the drinking water assessment in support of IR-4 new and revised uses registration of the insecticide, novaluron, ((RS)-1-[3-Chloro-4 (1,1,2-trifluoromethoxyethoxy)phenyl]-3-(2,6-difluorobenzoy1)urea, on Avocado; Beans, Berries (Low-Growing), Bushberries, Carrot; Cotton, Cucurbit Vegetables, Fruiting Vegetables, Head and Stem Brassica, Leafy Brassica Greens, Ornamentals (Container Grown Ornamentals in Greenhouses, Shadehouses, Outdoor Nurseries), Peanuts, Pears, Pome Fruits, Potatoes / Sweet Potatoes, Sorghum, Soybeans, Stonefruits, Sweet Corn, Sugarcane, Swiss Chard, and Turnip Greens (Table 1).  Based on a review of the product label for the crops listed above, the maximum annual application rates for the proposed IR-4 new and revised uses ranged from 0.16 to 0.97 lb ai/A (Table 1).  The proposed upper rate is equal to the previous rate for pome and stone fruits (0.972 lb ai/A) (USEPA 2009, D363989), and much lower than the previous application rate for poultry litter applications (14.82 lb ai/A) (USEPA 2013, D412441).  

Table 1.  Novaluron application rates for the proposed new and revised uses.

Crop
(Subgroup)
                          Maximum Application Rate[1]
                                  (lb a.i./A)
                    Maximum Number of Applications Per Year
                     Minimum Interval Between Applications
                                    (Days)
                           Method of Application[1]

                                    Single
                                    Annual
                                       
                                       
                                       
                           RIMON 0.83 EC (9.3% a.i.)
Avocado
                                     0.13
                                     0.38
                                       3
                                      14
                                    GA, AA
Bean
                                     0.077
                                     0.23
                                       3
                                       7
                                     GA,AA
Low-Growing Berries
                                     0.077
                                     0.23
                                       3
                                       7
                                  GA,AA, CHEM
Bushberries
                                     0.193
                                     0.58
                                       3
                                      10
                                  GA,AA, CHEM
Carrot
                                     0.08
                                     0.24
                                       3
                                       7
                                  GA,AA, CHEM
Cotton
                                     0.09
                                     0.27
                                       3
                                       7
                                  GA,AA, CHEM
Cucurbit Vegetables
                                     0.08
                                     0.23
                                       3
                                      14
                                  GA,AA, CHEM
Fruiting Vegetables
                                     0.08
                                     0.23
                                       3
                                       7
                                  GA,AA, CHEM
Head and Stem Brassica
                                     0.08
                                       
                                     0.16
                                       
                                       2
                                       7
                                  GA,AA, CHEM
Leafy Brassica Greens
                                     0.08
                                     0.23
                                       3
                                       7
                                  GA,AA, CHEM
Ornamentals 
                                     0.17
                                     0.34
                                       2
                                      30
                                      GA
Peanuts
                                     0.08
                                     0.23
                                       3
                                       7
                                  GA,AA, CHEM
Group 11-10 Pear
                                     0.21
                                     0.62
                                       3
                                      10
                                      OS
Group 11-10 Pome
                                     0.323
                                     0.97
                                       3
                                      10
                                      OS
Potatoes / Sweet Potatoes
                                     0.08
                                     0.16
                                       2
                                       7
                                  GA,AA, CHEM
Grain Sorghum
                                     0.08
                                     0.23
                                       3
                                       7
                                  GA,AA, CHEM
Soybeans
                                     0.08
                                     0.23
                                       3
                                      10
                                  GA,AA, CHEM
Stone Fruit
                                     0.323
                                     0.97
                                       3
                                       7
                                  GA,AA, CHEM
Strawberry
                                     0.08
                                     0.23
                                       3
                                       7
                                  GA,AA, CHEM
Sugarcane
                                     0.08
                                     0.39
                                       5
                                      14
                                  GA,AA, CHEM
Sweet Corn
                                     0.08
                                     0.39
                                       5
                                       7
                                  GA,AA, CHEM
Swiss Chard
                                     0.08
                                     0.23
                                       3
                                       7
                                  GA,AA, CHEM
Turnip Greens
                                     0.08
                                     0.23
                                       3
                                       7
                                  GA,AA, CHEM
1  -  It shows only the maximum application rate and minimum reapplication intervals for novaluron proposed uses, -- OS: Orchard Spraying,; GA: Ground Application; BA: Band Application (in Cotton only); AA: Aerial Application; CHEM: Chemigation; CHEM-PW: Chemigation system connected to public water systems; S-CHEM: Sprinkler Chemigation, 

The estimated drinking water concentrations (EDWC) of novaluron and its degradates (chlorophenyl urea and chloroaniline) from the new proposed and revised uses are not expected to exceed those from previous registered uses on PA apples (0.972 lbs ai/A/year) and poultry litter (14.82 lb ai/A/year).  Therefore, EFED continues to recommend the previous surface water upper bound EDWCs (Table 2).  

Table 2. The upper bound EDWCs for novaluron, chlorophenyl urea and chloroaniline  

                                     Acute
                                    (μg/L)
                          Non-cancer Chronic (μg/L)
                            Cancer Chronic (μg/L)
Novaluron
(PA Apples)
                                      3*
                                     0.76
                                     0.62
Chlorophenyl Urea
(Poultry litter use)
                                     8.77
                                     6.01
                                     3.21
Chloroaniline
(Poultry litter use)
                                     12,59
                                     10.05
                                     6.05
* Novaluron solubility limit

In addition, EFED continues to recommend the previously estimated concentrations of novaluron and two degradates modeled by SCI-GROW and PRZM-GW in shallow ground water sources with the peak EDWCs not to exceed 8.72 x 10[-2] μg/L (SCI-GROW), 0.43 μg/L and 84.2 μg/L (PRZM-GW) for novaluron, chlorophenyl urea, and chloroaniline, respectively. 

                                  References
UPEPA 2009.  Novaluron and Novaluron Degradates (Chlorophenyl urea and Chloroaniline) Drinking Water Assessment in Support of New Use Registration Action for Sorghum, Fruiting Vegetables (Group 8, D364309), Cucurbit Vegetables (Group 9), Low-growing Berry Subgroup (13-07G), Snap and Dry Bean, and Swiss Chard.  D363989 and D364309.  4pp.

USEPA 2013.   Drinking Water Assessment in Support of the New Indoor and Outdoor non-food Use of Novaluron for Pest Control.  DP Barcode: 412441 28pp.