### UNITED STATES ENVIRONMENTAL PROTECTIONAGENCY WASHINGTON, D.C. 20460 

### Office of Chemical Safety and Pollution Prevention

Date: 12/07//2010 DP Barcode: D379926 PC Code: 392201 

### MEMORANDUM SUBJECT:

FROM:

THRU:

TO: (Revised) Evaluation of Crops and Data Needed to Address Uncertainty in Risk to Pollinators from Spirotetramat Allen Vaughan, Joseph Decant, Ecologist Environmental Risk Branch:

### V Environmental Fate and Effects Division (7507P)



# . /2/g7//6 Mah 

### T. Shamim, Ph.D., Chief Environmental Risk Branch V Environmental Fate and Effects Di Rita Kumar, Risk Manager Reviewer John Hebert, Risk Manager, 

### Rm 07 Meredith Laws, Branch Chief Insecticide-Rodenticide Branch Registration Division (7505P)

This memo is a revision of the original "Evaluation of Crops" memo dated 07/07/10. There are three changes: Include pistachios in the "tree nuts" crop grouping. This crop was unintentionally omitted from the original memo; Add a reference to document the existence of extrafloral nectarines in cotton, per request from 

### RD; Include discussion ofthe uncertainties regarding potential exposure from application to tree crops and citrus. Detailed discussion ofthis subject was provided inthe EFED memo dated 08/10/10 (DP380617).

### Spirotetramat is registered for use on a large number of vegetable crops, fruit and nut trees, cotton, and soybeans.This document provides a break-out of the various uses accordingto the degree of bee hazard and whether this hazard can be mitigated with product labeling. Potential hazard from exposure, but hazard mitigated by crop-specific labeling ["Do not apply this product within 

### 10days prior to bloom, duringbloom, oruntil petal fall is complete" (for citrus); "Do not apply until after petal fall" (for all others)]: 1. Citrus fruits: calarnondin, citrus citron, citrus hybrids, grapefruit, kumquat, lemon, lime, mandarin, orange, pummelo, and Satsuma mandarin 2. Pome Fruits: apple crabapple, loquat, mayhaw, pear, oriental pear, quince 

### 3. Stone Fruits: apricot, cherry, nectarine, peach, plum, plumcot, prune 

### 4. TreeNuts: almond, beechnut, brazil nut, butternut, cashew, chestnut, chinquapin, filbert, hickory nut, macadamia nut, pecan, walnut, pistachio 5. Cucurbits: Chayote, Chinese waxgourd, citron melon, cucumber, gherkin, gourd, momordica spp., Muskmelon, pumpkin, squash, watermelon *Note the concluding paragraphs of this memo for discussion of uncertainties regarding labeling for citrus fruits and tree crops, and the requirement for residue studies. Minor crops andlor cropswhich may be attractive to bees under some conditions, but do not warrant crop-specific labeling: 

### 6. SmallFruitVine Climbing Subgroup: amur river grape, gooseberry, grape, kiwi, maypop, schisandra berry 

### 7. Potato and otherTuberous and Corm Vegetables: arracacha, arrowroot, artichoke, canna, cassava, chayote, chufa, dasheen, ginger, leren, potato, sweetpotato, tanier, tumeric, yam bean, yam 

### 8. Fruiting Vegetables: eggplant, groundcherry, pepinos, pepper, tomatillo, tomato 9. 

### Others: Soybean, legume vegetables, tropical fruit, okra
No exposure (crops do not bloom orbloom not attractive to bees): 10.Leafy Vegetables: amaranth, arugula, cardoon, celery, celtuce, chervil, Chinese celery, chrysanthemum, corn salad, cress, cress, dandelion, dock, endive, Florence fennel, lettuce, orach, parsley, purslane, radicchio, rhubarb, spinach, swiss chard 1

### 1.Brassica Leafy vegetables: broccoli, broccoli raab, Brussels sprouts, cabbage, cauliflower, cavalo~broccoli, Chinese broccoli, Chinese cabbage, Chinese mustard cabbage, collards, kale, kohlrabi, mizuna, mustard greens, mustard spinach,rape greens 12. Others: hops, Christmas tree plantations Potential hazard from exposurewhich cannot be mitigated by labeling:

### Cotton: Because cotton has extrafloral nectaries which produce nectar throughout the growing season,bees are attracted to the crop even after actualbloom has ceased. Thus, bee precautions based on bloom do not mitigate the hazard. The following websites discuss the nature of extrafloral nectaries in cotton:

One remaining area ofuncertainty is the potential for carryover in treated fruit and nut trees from one seasonto the next. There is data to show that certain other systemics, such as imidacloprid, may remain in treated woody ornamentals at significant levels for periods greater than one year. It is therefore possible that post-bloom application(s)may leave plant incorporated residues in the plant tissue that could be expressed in blossoms of the following year, in which case exposure could not be precluded. The following paragraphs, taken from the 08110110 memo, summarize the discussion: "EFED identifies that the period of concern for spirotetramat applications, given its systemic nature, is the period before bloom, during bloom, and until petal fall is complete. Therefore, 

### EFED believes that the label statement, "Do not apply until after petal fall", will be sufficiently protective for most crops. Given the systemic nature of spirotetramat, however, there is uncertainty regarding the potential for carry-over of residues from one growing seasonto the next for tree crops. Thus, studies shouldbe conducted to determine whether residues will remain in tree crops following post petalfall application of spirotetrarnatin the previous season at the maximum application rate. BCS should consult with 

### EPA in development of the protocols for these studies.
For citrus, EFED suggests that the original label statement, "Do not apply this product within 10 days prior to bloom, during bloom, or until petal fall is complete", may be used. Data shouldbe submitted to EPA to confirm and quantify levels of residues in citrus leaves, pollen, and nectar after applications at different times before bloom. The purpose ofthe study is to evaluate residue levels at 10days before bloom and prior to 10 days before bloom in order to better evaluate exposure to bees, and, if necessary, to revise the appropriate pre-bloom "window" necessary to protect pollinators. Again, study protocols shouldbe developed through consultation with EPA. The previous requirement for a pollinator field study with spirotetramatwill be placed in reserve, pending the outcome of the residue studies. Shouldthe residue studies indicate potential for pollinator exposure 

### in spite ofthe application restrictions, field studiesmay be required."

### For more detailed discussion ofthis subject, please see the 

### EFED memo dated 08/10/10 (DP3

### 8061 7).

### UNITED STATESENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C. 20460

OFFICEOF CHEMICAL SAFETY AND POLLUTION PREVENTION



### PC Code: 392201 DP Barcodes:D380140 

### MEMORANDUM DATE: December 2nd, 2010 

### SUBJECT: Section 18 Request for Use of Spirotetramat in the State of Minnesota for Use on Dry Bulb Onions to Control Thrips. 

### FROM: Joseph Decant, Ecologist
Jose 

### L. MelCndez, Chemist Environmental Risk Branch 5 Environmental Fate and Effects Division (7507P) 

### THROUGH: Mah Shamim, Ph.D, Branch Chief 

# /a/W3
Environmental Risk Branch 5 Environmental Fate and Effects 

### TO: Keri Grinstead, Risk Manager Reviewer Marcel Howard, Risk Manager Risk Integration, Minor Use and Emergency Response Branch Registration Division (7505P) The Environmental Fate and Effects Division (EFED) has completed itsreview of a Section 18 Emergency Exemption request for the use of Spirotetramat [MOVENTOTM (suspension concentrate) (Reg. No. 264-1050)] ondry bulb onions to controlthrips on approximately275 acres in the State ofMinnesota during the 2010 growing season. MOVENTOTM contains 22.4% active ingredient in the formulation. 

### The Minnesota Department ofAgriculture has requested this use under a section 

### 18exemption. Applications can be made by 

### both aerial and ground methods. Application rates should not exceed more than a total of 0.16 lb a.i./Aper season.Two applications may be made at 0.08 lb a.i./A at a minimum of a 7 day interval. The conclusionsof risk in a previous Section 

### 3 assessment (D345278)attached below canbe used in place ofthe current Section 18. Application rates were the same (referto 

### Table 

### 1 below) and aquatic EECs were similar (refer to 

### Table 

### 2 below), thus risks shouldbe similar. Also attached are a sample

### output from PRZMIEXAMS (Appendix A) and a listing of endangeredlthreatened species that may be affected under the current Section 18 should exposure occur (Appendix 

### B). Spirotetramat (CAS No. 2033 13-25-5;CAS Name 

### cis-3-(2,5-dimethylphenyl)-8-methoxy-2-oxo1-azaspiro[4.5]dec-3-en-4-yl ethyl carbonate; IUPAC Name 

### cis-4-(ethoxycarbony1oxy)-8- methoxy-3-(2,5-xyly1)-1

### -azaspiro[4.5]dec-3-en-2-one) is a systemic broad spectrum tetramic acid insecticide (ketoenole) that is applied as a preventative treatment during an early threshold of developing chewing insect populations when sufficient leaf tissue is present for uptake and translocation to occur within agricultural crops. Spirotetramat's mode of action is lipid biosynthesis inhibition 

### (LBI), which is classified as a Group 23 Insecticide. EFED has reviewed the Section 

### 18request and concluded, based on a previous assessment using the same application rates, that the proposed label for dry bulb onions results in exposures exceeding Levels of Concern (LOCs) for risk to endangered and non-endangered terrestrial invertebrates as well as chronic risk to endangered and non-endangered avian species, and those species for which birds serve as a surrogate. Currently, the Agency does not quantitatively evaluate the potential exposure and risk ofpesticides to 

### terrestrial invertebrates for screening level assessments. However, risks to non-target listed and non-listed invertebrates cannot be precluded. Although the intrinsic hazard potential to bees based on the acute oral and contact studies with honey bees appearsto be low, brood feeding tests with bees and acute toxicity contact studies with non-target arthropods (e.g.parasitoid wasps and predatory mites) conducted at less than the maximum application rate suggest there is potential for mortality in adults and pupae, massive perturbation ofbrood development, and early brood termination as a result of spirotetramat use. In addition, data on two other chemicals representing the ketoenole class of compounds (spiromesifen and spirodiclofen) also demonstrate that compounds with this mode of action (i.e., inhibition of lipid biosynthesis) may adversely affect bee broods and development while displaying low acute toxicity. This product is potentially toxic to honey bee larvae through residues in pollen and nectar, but not to adult honey bees. Exposure of 

### adult bees to direct treatment or residues on blooming crops can lead to effects on honey bee larvae. Dry bulb onions are harvested prior to bloom, thus bees will not be exposed to direct application to the crop. However, because aerial applications are allowed, areas adjacent to the treated field may be exposed to drift, resulting in possible exposure of foraging bees. Considering the potential hazard to pollinators, EFED recommends the following mitigation measures: 1) To minimize drift to adjacent fields, use ground application whenever possible; 

### 2) Provide notification to local beekeepers when applying this chemical; 3) Adhere to the existing bee precaution labeling: Do not apply this product or allow it to drift to blooming crops orweeds if bees are visiting the treatment area. 

### For future reference, recommendations for mitigation could be refined if the following information were made available: 1) Information on crops grown in fields adjacent to the onion fields, to determine ifnearby crops are bee pollinated; and,

### 2) Informationonrotational crops to follow onions, to determine ifrotational crops are bee pollinated.

1 Section 18 use on dry bulb onion in



### MN
Citrus Fruit (Crop Group 10,including calamondin,citrus citron, citrus hybrids like chironja,tangelo and tangor, grapefruit, kumquat, lemon, lime, mandarin or tangelo, sweet and sourorange, pummelo, Satsuma mandarin, and others) Grape (includingAmerican bunch grape, muscadine grape and vinifera grape) Grape and Small Fruit Vine Climbing (exceptkiwifruit) (including American bunch grape, muscadine grape and vinifera grape) 0.08

0.16

0.125

0.12 2

2

2

2

Pome Fruit (Crop Group 11,including apple, crabapple, loquat, mayhaw, pear, oriental pear, quince)
Stone Fruit (Crop Group 12,including apricot, sweet and tart cheny, nectarine, peach, plum-various kinds, plumcot and fresh and dried prune)

-- 0.4

0.24

0.34

0.2

0.32 

# --- 0.16 0.16

0.32

0.2

0.2

0.14

0.14 7

14

14

14 3

2 7

21

30

30


# -----

3

2

2 TreeNuts (Crop Group 14plus pistachio,

- T0.14 including almond, beechnut, Brazil nut, butternut, cashew, chestnut, chinquapin, G*, A, Airblast
G*,A, Airblast

G*, A, Airblast filbert-hazelnut, hickoly nut, macadamia nut-bush nut, pecan, pistachio, walnut-black and English) Hops

Christmas Trees 7

7

7 G,A (foliar application)

G*, A, Airblast

G*, A, Airblast G*, A, Airblast

0.10

0.16

CucurbitVegetables [Crop Group 9, including chayote, Chinese waxgourdChinese preserving melon, citron melon, cucumber, gherkin, gourd-various kinds, Momordica spp-includes various kinds, muskmelon (various kinds like cantaloupe, casaba, Crenshaw melon, melon, honeydew melon, Persian melon, pineapple melon, snake melon, and others), pumpkin, squash (includes summer type squash like scallop squash, zucchini and others, and winter type squash like acorn squash, calabaza and others), and watermelon (includes hybrids)] Airblast 14 7

1

7

1

7 0.08 2 G, A, Chemigation 1Fruiting Vegetables (Crop Group 8plus 0.08 okra including eggplant, groundcheny, okra, pepinos, pepper-various kinds, tomatillo and tomato)
I I Leafy Vegetables (Crop Group 4 0.08

including amaranth-various kinds, arugularoquette, cardoon, celery, celtuce, chervil, Chinese celery, chrysanthemum, corn salad, garden cress, cress-various kinds, dandelion, sorrel dock, endive, Florence fennel, lettucehead and leaf, orach, parsley, garden and winter purslane, radicchio-red chicory, rhubarb, spinach-various kinds, SWISS chard)
Brassica (Cole) Leafy Vegetables (Crop 0.08 Group 5 includingbroccoli raab, Brussels sprouts, cabbage, cauliflower, cavalo broccolo, Chinese broccoli, Chinese cabbage, Chinese mustard cabbage, collards, kale, kohlrabi, mizuna, mustard greens, mustard spinach, rape greens, turnip greens)
Potato and Other Tuberous and Corm Vegetables (Crop Subgroup 1C including arracacha, arrowroot, artichoke-Chinese and Jerusalem, edible canna, bider and sweet cassava, chayote-root, chufa, dasheen-taro, ginger, leren, potato, sweetpotato, tanier, turmeric, yam bean, true yam) 

# / *High airvelocity, low volume or air curtain sprayers. 

# 1

EFED also previously reviewed proposed supplemental labeling for use of Spirotetramat 240 SC 

### Greenhouse and Nursery InsecticideIMiticide on ornamentals, fruit and nut trees, and vegetable plants in greenhouses, nurseries, and interior plantscapes 

### (EPA Reg. No. 

### 432-RUTR) 

### (DP Barcode 

### D338103). 

### Finally, 

### Table 2 shows a comparison ofpreviously assessed crops (tomatoes represent fruiting vegetables while potatoes represent the group ofpotatoes and other tuberous and corm vegetables). Note that the EECs are similar. CA and GA 

### onion are the two standard onion scenarios and are suitable for national assessments; thus, they can be used to represent 

### MN

### Table 2. 

### Estimated Environmental Concentrations(EECs) of Spirotetramat Crop ScenarioaIApp.ratelNo.

Appsflnt. BetweenApps. 

### Peak (ppb) 21day(ppb) 60-day (ppb) Previous Assessment (DP 

### Barcode 345278) PA tomatoesaeriall 0.161 21 7 

### 0.254 0.0482 0.01 69 ID potatoesaeriall 0.161 21 7 

### 0.244 0.0475 0.01 67 

### Section 18 

### Emergency Exemption (also referto DP Barcode 362204+) CA onion aeriall 0.081 21 7 

### 0.232 0.0440 0.0154 GA onion aeriall 0.08121 7 

### 0.294 0.0492 0.01 73

a A chosen representativescenario for spray applicationsof spirotetramatto agriculturalcrops. Application rate in Ib a.i.lA and interval between applications indays.

### Appendix A. 

### PRZM/EXAMS Inputs and EECs Background Information on 

### PRZMmXAMS: The Tier 2 aquatic model employs PRZM (Pesticide Root Zone Model; version 3.12.2 compiled May 12, 2005) and EXAMS (Exposure Analysis Modeling System; version 2.98.04.06, compiled April.25, 2005). PRZM simulates processes such like runoff and erosion from an agricultural or otherwise field on a daily time step. The runoff and erosion flux output data from PRZM are used as chemical loadings to the EXAMS surface water program in order to predict the EECs. A graphical interface (PES.pl, v. 5.0, November 15,2006, http:llwww.epa.~ov/oppefed 

### I/models/water/ index.ht1~1 ) 

### was used. Theprogram PE5.pl is a graphical interface (shell) used by the Office of Pesticides Program (OPP)to facilitate putting chemical and use-specific input values into the proper positions in the PRZM input (inp) and the EXAMS chemical files. Once the inputs have been entered, the interface creates the necessary input and run files, calls up PRZM and EXAMS, runs the programs, and creates the output files, just as the DOS versions does. PRZM is a one-dimensional, dynamic, compartmental model that can be used to simulate chemical movement in unsaturated soil systems within and immediately below the plant root zone. It has two major components: hydrology (and hydraulics) and chemical transport. The hydrologic component for calculating runoff and erosion is based on the Soil Conservation Service curve number technique and the Universal Soil Loss Equation. Evapotranspiration is estimated either directly from pan evaporation data, or based on an empirical formula. Water movement is simulated by the use of generalized soil. parameters, including field capacity, wilting point, and saturation water content. The chemical transport component can simulate pesticides or other chemicals. For pesticides, the transport component can simulate pesticide application on the soil or on the plant foliage. Biodegradation can also be considered in the root zone. Dissolved, adsorbed, and vapor-phase concentrations in the soil are estimated by simultaneously considering the processes ofpesticide uptake by plants, surface runoff, erosion, decay, volatilization, foliar washoff, advection, dispersion, and retardation. EXAMS is an interactive software application for formulating aquatic ecosystem models and rapidly evaluating the fate, transport, and exposure concentrations of synthetic organic chemicals including pesticides, industrial materials, and leachates from disposal sites. EXAMS is a model that has a set of process modules that link fundamental chemical properties to limnological processes that control the kinetics and transport of chemicals in aquatic systems. It provides facilities for steady state or long-term evaluation of chronic chemical discharges, initial-value approaches for studying short-term contaminant releases, and full kinetic simulations that allow for monthly variation in mean climatological factors, and changes in contaminant loadings on daily time scales. It is fairly and relatively complex model that requires more input variables, ranging from hydro-geological and weather data to pesticide physicochemical properties, mobility coefficients, and degradation rate constants in the aqueous and sediment phases.

uspension concentrate) (Reg. No.
(suspension concentrate) (Reg. No.

### Table A.1. Input ParametersUtilized in PRZMIEXAMS for Spirotetramat. The only applicable crop is 

### onion. Comments Label application rate: Ib a.i./A: CA onion 0.08 x 2 GA onion 0.08 x 2 Estimated from metadata file and proposed labels. Proposed label MOVENTOTM (suspension concentrate) (Reg. No. 264-1050) Proposed label MOVENTOTM (suspension concentrate) (Reg. No. 264-1050) 

### Sources Label

Label PHI: CA onion 7 GA onion 7 Label

Label 

### Parameter (units) Application Rate

Day ofApplication (day-month)

Number of Applications Allowed

Minimum Interval between Applications (days) 

### Value(s) Label application rate: kg a.i./ha CA onion 0.0897 x 2 GAonion 0.0897 x 2 CA onion 11-05 GA onion 11-05 CA onion 2 GA onion 2 CA onion 7 GAonion 7

IPSCND (Flag indicating the disposition ofpesticide remaining on foliage after harvest) DEPl = Incorporation Depth (cm)

Kd (mL/g)

Aerobic Soil Metabolism (days)

Method of Application

7Buffer Zone (ft.)

Application Efficiency (fraction)
Spray Drift (fraction)

Solubility in Water (ppm)

Aerobic Aquatic Metabolism (days)

Anaerobic Aquatic Metabolism (days)

Hydrolysis at pH 7 half-life (days) 1

0.0

4.39

0.298

Aerial

NIA

0.95 (for aerial application)
0.05 (for aerial application)

335

1.07

8.4

13.1 Label

Label

OECDMonograph Annex B. Spirotetramat. B.8 Fate and Behaviour

OECD Annex B. S~irOtetramat. B.8 Fate and BehaviOur

Label

Label



### ---

---

OECD Monograph Annex B. Spirotetramat.B.8 Fate and Behaviour OECD Annex B. S~irOtetramat. B.8 Fate and BehaviOur

OECD Monograph Annex B. Spirotetramat, B,8Fate and Behaviour OECD Mono ra 2, linear foliar based on crop canopy 1, pesticide remaining on foliage is converted to surface application to the top soil layer Proposed label MOVENTOTM (suspension concentrate) (Reg. No. 264-1050) The average Kd value, as per EFED guidance on input parameters for PRZM/EXAMS dated 2128102. TheKd value represents better the mobility of spirotetramat (relative standard deviation is smaller). Represents the 90" percentile of the upper confidence bound on the mean of four half-life values (FL SL;tli2=0.30 days, SL; tli2= 0.24 days, SiL; tin= 0.26days, Si;tl;2= 0.09 days) Proposed label MOVENTOTM (suspension concentrate) (Reg. No. 264-1050) Proposed label MOVENTOTM (suspension concentrate) (Reg.No. 264-1050) EFED guidance on input parameters for PRZMEXAMS dated 2/28/02, EFED guidance on input parameters for PRZMEXAMS dated 2/28/02 and AgDRlFT output 10Xthe actual solubility as per EFED guidance on input parameters for PRZMIEXAMS,

Represents the 90" percentile of the upper confidence bound on the mean of two half-life values (L sediment;tliZ=l .06 days, LS sediment;tli2=1 .05 days) Determined by multiplying the calculated half-life (2.8 days) by 3 to account for the uncertainty associated with using a single value. EFED guidance on input

### Table A.2. Estimated environmental concentrations(EECs) of spirotetramat Crop Scenarioa/App. 

### Table A.1. 

### Input Parameters Utilized in PRZM/EXAMS for Spirotetramat. The only applicable crop is onion.

. . ratel~o. Appstlnt. Between ~pps. 

### Peak (ppb) 21day (ppb) 60-day (ppb) Previous Assessment 

### (DP Barcode 345278, for comparison) Parameter (units)

Aqueous Photolysis @, pH 7 (days)

Molecular Weight (glmole) Vapor Pressure (tonor mmHg) Henry's Law Constant (atm-m3/mol) Environment Field Size Runoff FEXTRC, Foliar extraction

PAtomatoes aeriall 0.16121 7 0.254 0.0482 0.0169 ID potatoes aeriall 0.161 21 7 0.244 0.0475 0.0167 

### Section 18 Emergency Exemption

CA onion aeriall 0.081 21 7 0.232 0.0440 0.0154 

### Value(s)

14.4

373.45
4,2x10-~~ 6.90x10~" pond298.e~~ Pond none 0.5

GA onion aeriall 0.081 21 7 0.294 0.0492 0.0173 PLDKRT. Decay rate on foliage
PLVKRT, Volatilization rate from foliage UPTKF. Uptake factor

Write Benthic Pore Water Concentrations?

" A chosen representative scenariofor spray applications ofspirotetramat to agricultural crops. Application rate in Ib a.i.lA and interval between applications in days. 

### Sources Annex B. Spirotetramat.B.8 Fate and Behaviour OECD Annex B. Spirotetramat. B.8 Fate and Behaviour 

### Comments parameters for PRZMEXAMS dated 2/28/02 and AgDRIFT output t,;?=14.4Phoenix, AZ days, maximum dark-controlled availablevalue

0

0

0

N/A OECD Monograph Annex B. Spirotetramat. B.8 Fate and Behaviour OECD Monograph Annex B. Spirotetramat. 8.8Fate and Behaviour OECD Monograph Annex B. Spirotetramat. B.8 Fate and Behaviour

---



### ---

---

--- --- ---
---
---
EFED guidance on input parameters for PRZM/EXAMS dated 2/28/02 EFED guidance on input parameters for PRZMEXAMS dated 2/28/02 EFED guidance on input parameters for PRZMEXAMS dated 2/28/02 NIA because the Koc's and Kd's are relatively small for spirotetramat. Default for std. pond scenario, as opposed to index reservoir.

--- EFED guidance on input parameters for PRZMEXAMS

### Total Residues of Spirotetramat (Spirotetramat 

## + Spirotetramat-en01

## + Spirotetramat-ketohydroxy 

## +Non-extracted Residues) TableA.3. Input Parametersfor PRZMIEXAMS for the Estimation ofthe EECs ofSpirotetramat

## + Degradatesof Concern (Total Residues: Spirotetramat

## +Spirotetramat-en01

### +Spirotetramatketohydroxy 

## +Non-extracted Residues)for a single selected crop.



## 1 I 1 ( (suspension concentrate) (Reg.No. 

## I

Parameter (units) Output File Name Chemical Name 

### Value(s) SPIROTET Spirotetramat
Crop Names

Aoolication Rate



# . . Day of Application (day-month) Number ofApplications 

### Sources

--- Label

FL avocado

FL avocado 0.1345 x 2 and

Minimum lnterval between Applications (days) CAM (Chemical application



## I 

## 1 1 sdirotetramat-ketohydroxy (ielative 

## I Comments 

### --- Proposed label MOVENTOTM

0.1793 kg a.i.iha
FL avocado 18-10 FL avocado 3

method) lPSCND (Flag indicating the disposition ofpesticide remaining on foliage after harvest) DEPl = Incorporation Depth (cm)

Kd (mL/g) Koc (mL/goc) Label

Label

FL avocado 14

2 264-1050) Proposed label MOVENTOTM (suspension concentrate) (Reg. No. 264-1050) FL avocado 0.12 x 2 and 0.16 Ib Label PHI: FL avocado 1day Label

1

0.0

65.32

Aerobic Soil Metabolism (days)

Method ofApplication

Buffer Zone (ft.)
Application Efficiency (fraction)
Spray Drift (fraction)

Solubility in Water (ppm) a.i./A Estimated from metadata file and proposed labels. Proposed label MOVENTOTM

Label

Label (suspension concentrate) (Reg. No. 264-1050) Proposed label MOVENTOTM (suspension concentrate) (Reg. No. 264-1 050) 2, linear foliar based on crop

Label

OECD ~~~~~~~~h Annex B. Spirotetramat. B.8Fate and Behaviour

Total Residues 222.3 days

Aerial

NIA

0.95 for aerial application

0.05 for aerial application

2280 canopy I, pesticide remaining on foliage is converted to surface application to the top soil layer Proposed label MOVENTOTM (suspension concentrate) (Reg. No. 264-1 050) The average Koc value, as per EFED guidance on input for PRZM/EXAMS dated 2/28/02. The Kd value represents better the mobility of

OECD Annex B. S~irOtetramat. B.8 Fate and BehaviOur

Label

Label

---

---

OECDMonograph Annex B. snirntetrama+ R R standard deviation is smaller). Represents the 90~ percentile of the upper confidence bound on the mean of four half-life values for the total residues ofthe enol,the ketohydroxy and the non-extracted residues (all possible significant figures used, use of log-linear parameters) (b2= 203.82 days, tllz

= 169.02days, tl12= 161.16days. fli2=203.82 days; mean = 184.455 days; std.dev.22.58984days). Proposed label MOVENTOTM (suspension concentrate) (Reg. No. 264-1050) Proposed label MOVENTOTM (suspension concentrate) (Reg. No 264-1050) EFED guidance on input parameters for PRZMEXAMS dated 2/28/02. EFED guidance on input parameters for PRZMIEXAMS dated 2/28/02 and AgDRIFT output 1OXthe actual solubility ofthe ketohydroxy, the more stable ofthe three 'pecies, as per EFED

### TableA.3. Input Parameters for PRZMIEXAMSfor the Estimationofthe EECsof Spirotetramat

### + Degradatesof Concern (Total Residues: Spirotetramat

### + Spirotetramat-en01

### +SpirotetramatComments guidance on input parameters for PRZMIEXAMS. For the parent + enol + ketohydroxy + non-extracted residues, represents the 90' percentile of the upper confidence bound on the mean of two half-life values 385.00; 693.00, 141.43, 256.67 days; std,dev =237.794 days, mean = 369.025 days (use of log-linear parameters). The enol is stable and there are no adequate dataon the ketohydroxy; the most conservative scenarto is presumed The enol is stable and there are no adequate data on the ketohydroxy; the most conservative scenariois presumed.
The enol and the ketohydroxy are not photodegradates; therefore, the most conservative scenario is presumed, B. Spirotetramat. B.8 Fate and 

### ketohydroxy

## +Non-extracted Parameter (units)

Aerobic Aquatic Metabolism (days)

Anaerobic Aquatic Metabolism (days!

Hydrolysis at pH 7 half-life (days)

Aqueous Photolysis @pH 7 (days)

Molecular Weight (glmole) Vapor Pressure (ton or mmHg) Henry's Law Constant (atm-m3/mol) Environment Field Size Runoff FEXTRC, Foliar extraction
PLDKRT, Decay rate on foliage
PLVKRT, Volatilization rate from foliage UPTKF, Uptake factor

Write Benthic Pore Water Concentrations3 

### Residues) for a single Value(s)

Total Residues 563.3 days

OVERALL - Stable

OVEKALL -Stable

OVERALL - Stable

373.45 

### selected crop. Sources and Behaviour
OECD Monograph Annex B. S~irotetramat. B.8 Fate and Behaviour

OECD Monograph Annex B. Spirotetramat,B,8Fate and Behaviour OECDMonograph Annex B. Spirotetramat.B,8Fate and Behaviour OECDMonograph Annex B. S~irotetramat. B.8 Fate and Behaviour OECD Monograph Annex
4,2x1 0-1 I 6.90~10'" pond298.e~~ Pond none 0.5

0

0

0

N/A Behaviour OECDMonograph Annex B. Spirotetramat. 8.8Fate and Behaviour OECDMonograph Annex B. Spirotetramat.B.8 Fate and Behaviour 

### ---
---
--- ---



### ---

---

---

--- Default for pond scenario, as opposed to index reservoir.

--- EFED guidance on input parameters for PRZMEXAMS dated 2/28/02 EFED guidance on input parameters for PRZMEXAMS dated 2/28/02 EFED guidance on input parameters for PRZMEXAMS dated 2/28/02 EFED guidance on input parameters for PRZMEXAMS dated 2/28/02 NIA because the Koc's and Kd's are relatively small for spirotetramat.

### Table B.4. 

### Estimated environmentalconcentrations (EECs) of spirotetramat plus residuesof concern (including NER) (ppb) for a single selected crop. Crop ScenarioalApp.

rate/No.Appsllnt. 

### ppb

Between ~pp s. 

### Peak 21

### day 60day FL avocado aerial1 0.12+0.12+0.141 31 4.89 4.84 4.78 14 " A chosen representative scenario for spray applicationsofspirotetramat to agricultural crops. Application rate in Ib a.i./A and interval between applicationsin days.


### FROM METADATA FILES CALIFORNIA ONION 

## -used as a surrogate for 

### MN The field used to represent onion production in California is located in Kern County in the SanJoaquin Valley, although onion production areas are quite extensive (San Joaquin, CoastalIntermediate Region, Imperial Valley, southern and central coastal regions, the high desert areas of Los Angeles County and the northern mountain valleys). According to the 1997 Census of Agriculture, California is the major producer of onions for the market. Bulb onions are planted from September through May and harvesting begins in April or May and completed by September. Onions are cools season, biennial plants that are commercially grown as an annual. Most onions are direct seeded, but transplants are used in some fall planted fields for an earlier harvest of short-day and intermediate-day varieties and to achieve uniform 

## , jumbo-sized bulbs. Seeds are planted uniformly at 

### 2 to 3 inches between plants in a row. Onions are most commonly grown in multiple rows on raised beds 40 to 42 inches wide, but some production areas use 36-inch wide beds or beds of 

### 60 to 80 

### inches. Distribution of rows across beds varies depending on irrigation method and planter. With drip and sprinkler irrigation (most common types), rows are spaced equidistant across the bed at approximately 4-inch intervals. When furrow irrigation is used, the center of the bed is left vacant for salt accumulation with 2 or 3 rows planted on either side. Plant canopy can approach 100 percent in some narrow row fields grown under drip irrigation. Irrigation is required to avoid seed or plant dry out. Generally 24 to 36 inches of irrigated water per year is sufficient. Onions can grow on a wide range of soils. The soil selectedto represent the field is Ciervo clay. Ciervo clay, is a fine, semetic, thermic Vertic Haplocambids. These soils are often used for onion and other truck crop production under irrigation. Ciervo clay is a very deep, moderately well drained, medium to high runoff soil on fan skirts that formed in alluvium mainly from sedimentary rocks at elevation of 170 to 735 feet above mean sea level. The Ciervo clay has very slow permeability. Slopes range from 0 to 2 percent. The soil is of large extent in 

### MLRA 17. Ciervo clay is a Hydrologic Group D soil. 

### GEORGIA ONION -

### used as a surrogate for 

### MN The field used to represent Vidalia or Sweet Onion production in Georgia is located in Toombs County in Southeastern Georgia. Vidalia Onion can only be legally grown in Southeastern Georgia, in the counties of:Appling, Bacon, Jeff Davis, Montgomery, Tattnall, Telfair,Toombs, Truetlen and Wheeler, and in parts of Dodge, Jenkins, Laurens, Long, Pierce, Screven, and Wayne Counties (Federal Market Order 955)

.

### Toombs County, Georgia isrepresentative ofthe Vidalia onion growing region of Southeastern Georgia. Toombs County is located inthe Southern Coastal Plain (MLRA 133A) as are many of the Vidalia Onion growing counties. However some ofthese counties (i.e., Bacon, Wayne) also extend into Atlantic Coastal Flatwoods 

### (MLRA 153A). According to the 1999-2001 PASS,

### htt~://www.usda.rov/nass/pubs/a~r02/02 ch4.pdf) Georgia is a major producer of onions. Vidalia onions are typically planted from mid-September (Sept. 20) through mid-October (Oct. 

### 20) and harvesting begins in mid-June (June 15). Onions are cool season, biennial plants that are commercially grown as an annual. Most onions are direct seeded, but transplants are used in some fall planted fields for an earlier harvest of short-day and intermediate-day varieties and to achieve uniform 

## , jumbo-sized bulbs. Seeds are planted into 6 

### foot wide raised beds, with a 4- to 6-inch within row spacing and 10- to 18-inch spacingbetween rows (Granberry and Kelly, 2000). Distribution of rows across beds varies depending on irrigation method and planter. All commercial grown onions in Georgia are irrigated (Harrison, 2001). Irrigation should be light and frequent until the onion plants are established. The onion has a shallowroot system, with most ofthe roots in the top 12inches of soil. Onions continue to grow new roots (3 to 

### 4 per week) throughout the entire growing season. Maintaining proper soil moisture in the upper 3 to 4 inches ofthe soil is critical for continuous root growth and for supplying the needs of the foliage and bulb. Depending upon soil type, temperature, wind velocity and rainfall, 0.10 to 0.25 inches of irrigation may be required daily. Boyhan et al. 

### (1999) and Granberry and Kelley (2000) provide more specific information concerning the irrigation of onions in Georgia). Between 10and 12 inches of irrigation water were reportedly applied vegetable crops in Georgia, during the year 2000 (Harrison, 2001). Almost all onions in Georgia are sprinkler-irrigated. The over-canopy irrigation routine (IRTYP 3) is used in this PRZM scenario. The ideal range for soil moisture is between 

### 5 and 30 centibars. Readings above 30 centibars indicates the soil is becoming dry and irrigation should be applied (Harrison, 2001). Onions can be grown on a wide range of soils. The soil selected to represent the field is Clarendon. Clarendon loamy sand is a fine-loamy, siliceous, semiactive,thermic Plinthaquic Paleudults. These soils are often used for growing tobacco, cotton, corn, soybeans, small grain, and pasture grasses. Forested areas are mostly pine with scattered hardwoods. The Clarendon series consists of very deep, moderately well drained, slow runoff, loamy soils that formed in marine sediments. The Clarendon loamy sand has moderately slow permeability. Slopesrange from 0 to 

### 6 percent. The soil extends along the Coastal Plain ofAlabama, Florida, Georgia, and South Carolina. The series is of large extent in MLRA 133A and 153A.Clarendon loamy sand is a Hydrologic Group C 

### soil. The Clarendon soil was selected, because it is geographically associated with the competing soil Tifton loamy sand (Hydrologic Group B) which is also a suitable onion soil. Granberry and Kelley, (2000) indicated that Tifton soils are found in the Vidalia onion growing area and is well suited for onion production. The use and vegetation between the two series are similar. Metfile: W03822.dvf (Savannah, GA) Sample Output 

### File 

## - CA 

### onion

stored as SPIROTET.out Chemical: SpirotetrarnatPRZM environment: CAonion-WirrigSTD.txt modified Tueday, 29 May 2007 at 12:43:34 EXAMS environment: pond298.e~~ modified Thuday, 29 August 2002 at 16:33:30 Metfile: w23155.dvf modifiedwedday, 3 July2002 at09:04:20 Water segment concentrations (ppb)

Year 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 Peak 0.2324 0.2326 0.2299 0.2311 0.2314 0.2297 0.2293 0.2288 0.2268 0.2269 0.2308 0.2291 0.2289 0.2274 0.2284 0.2264 0.2318 0.2287 0.228 0.232 0.2279 0.2284 0.2292 0.2287 0.2303 0.23 0.2281 0.23 0.2291 0.2314 96 hr 21 Day 60 Day 90 Day Yearly 0,1057 0.045770.016030.010690.002635 0.1049 0.0452 0.01583 0.010550.002602 0.09802 0.041470.01452 0.009681 0.002387 0.1019 0.043790.01533 0.010220,002514 0.09722 0.04093 0.01433 0.009556 0.002356 0.09055 0.03742 0.0131 0.008733 0.002153 0.09607 0.04032 0.014120.009412 0.002321 0.094180.03935 0.01378 0.009186 0.002259 0.08475 0.034620.01212 0.008080,001992 0.084430.03438 0.01204 0.008024 0.001978 0.1013 0.043270.015150.0101 0.002491 0.08872 0.036590.012810.008541 0.0021 0.08054 0.0324 0.011340.007561 0.001864 0.08735 0.036260.01269 0.008462 0.002087 0.08807 0.036230.01268 0.008455 0.002085 0.08204 0.03343 0.0117 0.007803 0.001919 0.1027 0.044 0.015410.010270,002533 0.08803 0.0362 0.01267 0.008449 0.002083 0.08305 0.03375 0.011820.007877 0.001942 0.1025 0.043760.015330.01022 0.002512 0.09024 0.037510.01314 0.008757 0.002159 0.082 0.03316 0.011610.007739 0.001908 0.095750.04029 0.014110.009405 0.002319 0.0884 0.03643 0.01276 0.008504 0.002091 0.099650.04228 0.0148 0.009870.002434 0.09366 0.039070.013680.00912 0.002249 0.089490.037110.012990.008663 0.002136 0.098610.042 0.014710.009806 0.002411 0.0958 0.04018 0.01407 0.009379 0.002313 0.09804 0.041180.014420.009614 0.00237
Sorted results Prob. Peak 96 hr 0.032258064516129 0.0645161290322581 0.0967741935483871 0.129032258064516 0.161290322580645 0.193548387096774 0.225806451612903 0.258064516129032 0.290322580645161 0.32258064516129 0.354838709677419 0.387096774193548 0.419354838709677 0.451612903225806 0.483870967741936 0.516129032258065 0.548387096774194 0.580645161290323 0.612903225806452 0.645161290322581 0.67741935483871 0.709677419354839 0.741935483870968 0.774193548387097 0.806451612903226 0.838709677419355 0.870967741935484 0.903225806451613 21 Day 0.2326 0.2324 0.232 0.2318 0.2314 0.2314 0.2311 0.2308 0.2303 0.23 0.23 0.2299 0.2297 0.2293 0.2292 0.2291 0.2291 0.2289 0.2288 0.2287 0.2287 0.2284 0.2284 0.2281 0.228 0.2279 0.2274 0.2269 60 Day 90 Day Yearly 0.1057 0.045770.01603 0.010690.002635 0.1049 0.0452 0.015830.010550.002602 0,1027 0.044 0.015410.01027 0,002533 0.1025 0,043790.01533 0.010220.002514 0.1019 0.043760.01533 0.01022 0,002512 0.1013 0,043270.01515 0.0101 0,002491 0.09965 0.04228 0.0148 0.00987 0,002434 0.098610.042 0.014710.009806 0.002411 0.098040.041470.014520.009681 0.002387 0.098020.041180.01442 0.009614 0.00237 0.097220.04093 0.014330.009556 0.002356 0.09607 0.040320.01412 0.009412 0.002321 0.0958 0.040290.014110.009405 0.002319 0.095750.04018 0.014070.009379 0.002313 0.09418 0.03935 0.01378 0.009186 0.002259 0.093660.039070.013680.00912 0.002249 0.09055 0.037510.01314 0.008757 0.002159 0.090240.037420.0131 0.008733 0.002153 0.08949 0.037110.01299 0.008663 0.002136 0.088720.03659 0.012810.008541 0.0021 0.0884 0.03643 0.01276 0.008504 0.002091 0.08807 0.03626 0.01269 0.008462 0.002087 0.08803 0.03623 0.01268 0.008455 0.002085 0.08735 0.0362 0.012670.008449 0.002083 0.084750.034620.012120.00808 0.001992 0.08443 0.03438 0.01204 0.008024 0.001978 0.08305 0.033750.01182 0.007877 0.001942 0.08204 0.03343 0.0117 0.007803 0.0019190.1 0.23198 0.10268 0.043979 0.015402 0.010265 0.0025311 Average of yearly averages: 0.0022401
Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: SPIROTET Metfile: w23155.dvf PRZM scenario: CAonion-WirrigSTD.txt EXAMS environment file: pond2 98
.exv Chemical Name: Spirotetramat Description Variable Name Value Units Comments Molecular weight mwt 373.45 g/mol HenrylsLaw Const. henry 6.9e-13 atm-mA3/mol Vapor Pressure vapr 4.2e-lltorr Solubility sol 335 mg/L Kd Kd 4.39 mg/L KOC KOC mg/L Photolysis half-life kdp 14.4 days Half-life Aerobic Aquatic Metabolism kbacw 1.07 days Halfife Anaerobic Aquatic Metabolism kbacs 8.4 days Halfife Aerobic Soil Metabolism asm 0.298 days Halfife Hydrolysis: pH 7 13.1 days Half-life Method:CAM 2 integer See PRZM manual Incorporation Depth: DEPI 0.0 cm Application Rate: TAPP 0.0897 kg/ha Application Efficiency: APPEFF 0.95 fraction Spray Drift DRFT 0.05 fraction of application rate applied to pond Application Date Date 11-05 dd/mm or dd/mrnm or dd-mm or dd-mmm Interval 1 interval 7 days Set to 0 or delete line for single app app. rate 1 apprate 0.0897 kg/ha Record 17: FILTRA IPSCND 1 UPTKF 0 Record 18 : PLVKRT 0 PLDKRT 0 FEXTRC 0.5 Flag for Index Res. Run IR EPA Pond Flag for runoff calc. RUNOFF none none, monthly or total(average of entire run)

### Appendix 

### B. Endangered species listings for dry 

### bulb onion in Minnesota 

# Species in Counties 

# by State and Taxa No species were excluded Minimum of 1Acre All Medium Types Reported Bird, Amphibian, Reptile, Arachnid, Insect onions 

### - dry 

### Minnesota Minnesota
Plover, Piping Charadnus rnelodus St. Louis Insect Butterfly, Karner Blue Lycaeides rnelissa samuelis Winona 

## 2 Species Affected: Inverse Name: Butterfly, Kamer Blue Plover, Piping Taxa: Co. lnsect 1 Bird 1 Status: Endangered Endangered

No species were selected for exclusion. Dispersed species included in report. 8/25/2010 11:39:36 AM Ver. 2.10.4 Page 1 

### of 1

### Listed Species Risks Associated With Direct or Indirect Effects Due to Applications of Spirotetramat Listed Taxonomy Terrestrial and semi-aquatic plants -monocots Terrestrial and semi-aquatic plants -dicots Terrestrial invertebratesc

Mollusks 

## I No data 

## I NIA Direct Effects None

Birds Terrestrial phase amphibiansb Reptiles Mammals Aquatic vascular plants Aquatic non-vascular plants a Freshwater fish Aquatic phase amphibiansb

Marinelestuarine fish (chronic) 

# I Nodata 

# 1 N/A

a At the present time no aquatic non-vascular plants are included in Federal listings ofthreatened and Indirect Effects None
None
Yes

endangered species. The taxonomic group is included here for the purposes of evaluating potential contributions to indirect effects to other taxonomy and as a record of exceedances should future listings of non-vascular aquatic plants warrant additional evaluation of Federal actions.

Terrestrial phase amphibians and reptiles estimated using birds as surrogates. Aquatic amphibians estimated using freshwater fish as surrogates.

Endangered insects are not likely to be impacted if label precautions are followed. None
Yes Yes Yes Yes I None None None None None Yes Yes Yes None None None None None Freshwater crustaceans I None None