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®0.83 EC) on Avocado; Beans, Berries (LowGrowing), 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)
2

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 

Rate1

(lb a.i./A)

Maximum 

Number of 

Applications 

Per Year

Minimum 

Interval 

Between 

Applications

(Days)

Method of 

Application1

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
3

Crop

(Subgroup)

Maximum Application 

Rate1

(lb a.i./A)

Maximum 

Number of 

Applications 

Per Year

Minimum 

Interval 

Between 

Applications

Method of 

Application1

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 10-2μg/L (SCIGROW), 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.