1

MEMORANDUM

DATE: October 11, 2011

SUBJECT: Tier I Drinking Water Exposure Assessment for the Section 3 New Use of 

Acetamiprid on Various Agricultural Crops and as a Scatter Bait to Control 

Insects

TO: Michael Doherty, Chemist

Christina Swartz, Branch Chief

Risk Assessment Branch 2

Health Effects Division (HED)

Jennifer Urbanski, Risk Manager Reviewer

Venus Eagle, Product Manager

Laura Nollen, Risk Manager Reviewer

Barbara Madden, Risk Manager

Registration Division (7505P)

FROM: Katrina White, Ph.D. Biologist

Environmental Risk Branch IV

Environmental Fate and Effects Division (7507P)

REVIEWED

BY: James N. Carleton, Ph.D., Senior Scientist

Environmental Risk Branch IV

Environmental Fate and Effects Division (7507P)

APPROVED

BY: Marietta Echeverria, Branch Chief

Environmental Risk Branch IV

Environmental Fate and Effects Division (7507P)

OFFICE OF CHEMICAL SAFETY

AND POLLUTION PREVENTION

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

WASHINGTON, D.C. 20460

PC Code: 099050

DP Barcode: D394234, 394479
2

Executive Summary

This memo summarizes the Tier I estimated drinking water concentrations (EDWCs) of 

acetamiprid (PC Code 099050, (E)-N1-[(6-chloro-3-pyridyl)methyl]-N2-cyano-N1-

methylacetamidine) in surface water and in ground water in support of the proposed Section 3

new use of acetamiprid for control of a variety of insects on several use sites. Nippon Soda Co 

LTD is seeking registration for 

• a wettable powder (ASSAIL ® 70 WP, EPA Registration Number 8033-23) that contains 

70% acetamiprid, 

• a soluble granule (ASSAIL ® 30 SG, EPA Registration Number 8033-36) that contains 

30% acetamiprid, and

• a dry bait material (RF2157 Insecticide) that contains 0.5% acetamiprid and 0.075% z-9 

Tricosene. 

This assessment focuses only on the active ingredient acetamiprid; z-9 tricosine is not assessed. 

Ground, aerial, and chemigation applications are proposed for the wettable powder and soluble 

granule formulations and the bait is scattered by hand or placed in bait stations. The maximum 

application rates considered in this assessment include the seasonal rate of 2.0 lbs active 

ingredient per acre (a.i./A) for the proposed new use as a scatter bait and 0.72 lbs a.i./A for the 

proposed use on tree nuts. The tree nut use is an existing use but was evaluating using updated 

fate data. The high application scenario for the scatter bait is based on an assumed 24 possible 

applications because the label does not specify a maximum number of applications. Results 

were also modeled assuming one application. For the scatter bait use, only a portion of an acre is 

likely to be treated; however, that portion is not specified on the label. If the label specified a 

lower maximum application rate for an entire acre, the EDWCs would be lower.

The EDWCs for both surface and ground water recommended for use in HED’s human health 

dietary risk assessment are summarized in Table 1. The EDWCs resulting from the proposed 

application rates are higher than the EDWCs for surface and ground water in the previous 

drinking water assessments for acetamiprid (USEPA, 2011, D390070).

1 The values in surface 

water are four to ten times higher than previously EDWCs and the values for groundwater are 33 

to 35 times higher. Degradation kinetics used in modeling were calculated including results 

from MRID 46255603. This MRID was not included in estimated aerobic soil metabolism rates 

for the previous drinking water assessments because only one replicate was included in the 

study. While the study only had one replicate and two replicates are typically required, the 

results were found to be acceptable for use in modeling in this assessment. Kinetics were also 

estimated assuming that unextracted residues were the parent compound for some studies. 

Therefore, EDWCs were estimated for the previously evaluated use scenarios (citrus, potatoes, 

tobacco, tree nuts, grapes and other small fruits, greenhouse-grown tomatoes, and soybeans) 

using the new input parameters. Additionally, a percent cropped area was not applied to the 

modeled values because acetamiprid is registered for use in residential areas, domestic dwellings, 

rights of way, and on ornamentals. Drinking water assessments were not available for all of the 

use patterns listed as active in OPPIN and it is not known if this risk assessment evaluated the 

highest use rates or use scenario that would result in the highest drinking water numbers when 

considering all acetamiprid approved labels; however, the reported values are the highest values 

 1 Previously estimated acute and annual average surface water concentrations were 24.70 and 7.09 ppb, respectively. 

Previously estimated groundwater concentrations were 4 parts per trillion.
3

based on previously evaluated uses and the currently proposed labels. If these EDWC result in a 

risk concern they can be refined. For the use where the bait is placed in a station it is assumed 

that minimal transport of the pesticide into water will occur and drinking water concentrations 

are not estimated.

No monitoring data are currently available to further characterize potential drinking water 

exposure.

Table 1. Tier I EDWCs for drinking water risk assessment based on acetamiprid use as a 

bait scattered on surfaces and on tree nuts.

1,2

Source of Drinking 

Water

Acetamiprid concentration in drinking water (μg/L)

Bait Scattered on Surfaces

(High Use Scenario) Tree Nuts

Surface water 

drinking water sources

acute: 95.2

annual average: 26.6

acute: 42.8

annual average: 12.2

Groundwater drinking 

water sources 0.035 0.013

1 These are the highest EDWCs for the proposed and previously evaluated use scenarios.

2 Previously estimated acute and annual average surface water concentrations were 24.70 and 7.09 ppb, 

respectively. Previously estimated groundwater concentrations were 4 parts per trillion.

Proposed Use

Nippon Soda Co. LTD is seeking registration of several new uses of acetamiprid (PC Code 

099050) on three separate labels. The new uses evaluated in this assessment are for the wettable 

powder product ASSAIL ® 70WP (EPA registration Number 8033-23, 70% acetamiprid), the 

soluble granule ASSAIL ® 30SG (30% by weight acetamiprid), and the scatter bait RF2157 

Insecticide (EPA Registration Number 8033-XX, 0.5% acetamiprid and 0.075% Z-9 Tricosene). 

A number of different uses are proposed on the labels including use on cotton, leafy vegetables 

within crop group 4, head and stem cole crops, leafy cole crops (within crop subgroup 5B), 

turnip greens, fruiting vegetables (within crop group 8-10), tuberous and corm vegetables within 

crop subgroup 1C, cucurbits with crop group 9, edible podded legume within crop subgroup 6A, 

succulent shelled peas and beans within crop subgroup 6B, blueberries and other bush berries 

within subgroup 13-07B, caneberries with crop subgroup 13-07A, onions and other bulb 

vegetables within crop group 3-07, asparagus, sweet corn, and pome fruit within crop group 11-

10, and as a bait in animal areas. Uses are also proposed on tobacco but the previous label 

already had approved uses on that crop but the interval between applications was not previously 

assessed; the interval in this assessment is seven days and the interval is specified on the label. 

Uses on the proposed label that were previously assessed include use on citrus fruits, grapes and 

other climbing small fruits (except fuzzy kiwifruit) within crop subgroup 13-07F, soybeans, and 

tree nuts within crop group 14 including pistachio. Aerial, chemigation, ground, and airblast 

applications are proposed for the agricultural crops and the scatter bait may be scattered on 

surfaces or placed in a bait station in animal areas and near enclosed dumpsters. The soluble 

granule is dissolved into water and applied as a spray. The maximum number of applications for 

the scatter bait is not specified on the label. Therefore, a high (24 applications with a three day 
4

interval) and a low (one application) scenario were modeled. For the use where the bait is placed 

in a station it is assumed that minimal transport of the pesticide into water will occur and 

drinking water concentrations are not estimated. Drinking water concentrations are estimated for 

the scattering of bait on surfaces. The ASSAIL ® 30SG and 70WP Insecticide labels state for 

applications to row crops or orchard and vine crops, “For aerial application, select nozzles and 

pressure that deliver medium spray droplets as indicated in nozzle manufacturer’s catalogs and in 

accordance with ASAE Standard S-572”. Additionally, use of adjuvant, such as high quality 

non-ionic or silicone surfactants or methylated seed oils is recommended to enhance coverage 

and plant uptake and may improve pest control on certain crops. Details on the proposed use 

rates are shown in Table 4.

 

Environmental Fate and Transport Summary

Acetamiprid is classified as moderately mobile using the FAO classification system (KOCs = 

157-298 L/kg OC). The primary route of degradation is aerobic soil metabolism. Unextracted 

residues made up a significant amount of radioactivity and the identity of the residues is 

unknown in metabolism studies. Therefore, degradation rates were estimated for the parent 

alone and assuming that unextracted residues were the parent. Aerobic soil metabolism rates for 

the parent ranged from <1 day to six days for the parent and two to 99 days for the parent and 

unextracted residues in nine soils (USEPA, 2011, D390070). Aerobic aquatic metabolism rates 

were slower at 25 days for the parent alone and 74 days for parent and unextracted residues in 

one sediment (MRID 44988513). Anaerobic aquatic metabolism was much slower and the halflife was 325 days in a loamy sand sediment (MRID 44988512). Acetamiprid is stable to 

hydrolysis at 25o

C and aqueous photolysis is not a major degradation pathway (half-life = 34 

days). Acetamiprid may be transported to surface water and ground water via runoff, leaching, 

and spray drift. An updated summary of all environmental fate information for acetamiprid is 

available in a recently completed drinking water assessment evaluating a proposed use on 

soybeans (USEPA, 2011, D390070).

Modeling Approach and Input Parameters

The Metabolism Assessment Review Committee (MARC) reported that the residue of concern 

for acetamiprid is the parent only (USEPA, 2001). The 2009 “Tier I Drinking Water Assessment 

for Acetamiprid Proposed Uses on Red Clover (Grown for Seed Only), Grape and Tomato 

(Greenhouse)” was conducted for acetamiprid only. Therefore, this assessment will also be 

conducted on acetamiprid only. Unextracted residues were observed in aerobic soil and aerobic 

aquatic metabolism studies and in some studies it was uncertain whether the unextracted residues 

were parent compound (MRIDs 46255603, 44651881, 44699101, 44651879, 44988513, and 

44988512).

2

 Additionally, the extraction techniques were not exhaustive and it is likely that if 

different extraction techniques were used a higher percentage would be extracted. Therefore, 

when it was uncertain, half-lives were estimated assuming the unextracted residues were the 

parent compound. When the parent was shown to degrade at the beginning of the study and 

 2 If unextracted residues formed along with loss of the parent compound it is possible that the unextracted residues 

are the parent compound; however, if the parent degraded significantly in the beginning of the study and unextracted 

residues did not form until the end of the study, the unextracted residues are unlikely to be the parent compound.
5

unextracted residues did not appear until the end of the study, it was assumed that the 

unextracted residues were not the parent compound.

EDWCs were generated using EFED’s standard suite of models. The FQPA Index Reservoir 

Screening Tool (FIRST version 1.1.1, March 25, 2008) is a surface water model that is used to 

estimate both acute and chronic pesticide concentrations in untreated drinking water. EDWCs 

from FIRST represent concentrations which might occur from a single 1-in-10-year storm event 

following the last application of pesticide at a location more vulnerable than most locations in 

the United States to runoff, regardless of the crop being produced. The model considers 

reductions in dissolved concentration due to the percentage of the watershed which is cropped 

(percent cropped area - PCA), due to sorption of pesticide to field soil and to reservoir bottom 

sediment, due to incorporation of the pesticide at the time of application, due to degradation in 

soil before runoff to the reservoir, and due to degradation of the pesticide within the water body. 

Reservoir water concentrations may be increased due to deposition of spray drift into the feeding 

stream or directly into the reservoir itself. FIRST is designed to mimic a more complex 

simulation using the linked PRZM3 (Carsel et al., 1997) and EXAMS 2.97.7 (Burns, 2000)

models, but requires less time and effort to complete. A more detailed description of the index 

reservoir watershed can be found in USEPA, 2010 (USEPA, 2010b). The FIRST model and 

users manuals may be downloaded from the U.S. Environmental Protection Agency (EPA) 

Water Models web-page (http://www.epa.gov/oppefed1/models/water/#first). Percent Cropped 

Areas (PCA) that account for the maximum area within a watershed that may be planted with the 

modeled crop are applied to concentrations predicted by FIRST according to “Guidance on 

Development and Use of Percent Cropped Area Adjustment Factors in Drinking Water Exposure 

Assessments” (USEPA, 2010a). Drinking water assessments have been completed for use of 

acetamiprid on clover, grapes and other climbing vines, greenhouse grown tomatoes, citrus 

fruits, tree nuts, bulb vegetables, succulent legumes, strawberries, other berries, and potatoes

(D364248, D331596, D301859, D263686, D279762). All of these crops are agricultural crops

and a PCA of 0.87 was used in the past in estimating surface water concentrations. OPPIN was 

searched (July 13, 2011) and there are currently registered uses in ornamentals (8033-22, 8033-

107), domestic dwellings (8033-26, 8033109), rights of ways (8033-96), and residential areas 

(WA060011)

3

. If a chemical has uses in a variety of land cover classes that include residential 

areas, a PCA is not applied because the land-class was not included in the development of PCAs

(USEPA, 2010a). A recent assessment evaluated proposed uses of acetamiprid on soybean and 

also updated modeling for some previously assessed uses (USEPA, 2011, D390070). 

Screening Concentration in Ground Water (SCI-GROW v2.3, Jul. 29, 2003) is a regression 

model used as a screening tool to estimate pesticide concentrations found in ground water used 

as drinking water. SCI-GROW was developed by fitting a linear model to ground water 

concentrations with the Relative Index of Leaching Potential (RILP) as the independent variable. 

The RILP is a function of aerobic soil metabolism and the soil-water partition coefficient. The 

output of SCI-GROW represents the concentrations that might be expected in shallow 

unconfined aquifers under sandy soils, which is representative of the ground water most 

vulnerable to pesticide contamination and likely to serve as a drinking water source. The SCIGROW model and user’s manual may also be downloaded from the EPA Water Models web-

 3 A comprehensive analysis of uses and labels was not completed. This reflects uses on only a subset of labels.
6

page (http://www.epa.gov/oppefed1/models/water/#scigrow). PCAs are not used with the SCIGROW model.

A summary of the model input parameter values used in FIRST is presented in Table 2. A 

summary of the model input parameter values used in SCI-GROW is presented in Table 3. 

Input parameters were selected in accordance with EFED’s “Guidance for Selecting Input 

Parameters in Modeling the Environmental Fate and Transport of Pesticides,” Version 2.1 

(USEPA, 2009). 

Coefficients of variation (CV) were lower for organic-carbon normalized solid water distribution 

coefficients (KOC; CV=28%) as compared to solid-water distribution coefficients (Kd; 

CV=66%)(MRID 44651884). Therefore, the mean KOC (227 L/kg OC) was used to estimate 

acetamiprid concentrations in surface water in FIRST and the median KOC (251 L/kg-OC) was 

used for SCI-GROW. The aerobic soil metabolism input value in FIRST was calculated as the 

90th percentile upper confidence bound on the mean of eight half-life values and some of the 

values were estimated for the parent and unextracted residues (MRIDs 44651884, 44651882, 

44699101, 44651879, and 46255603).

4 The aerobic soil metabolism input value for SCI-GROW 

was the median of the same eight half-life values. The aerobic soil metabolism value from 

MRIDs 44651880 was not used in modeling because the study was not conducted using Good 

Laboratory Practices (GLP). 40 CFR Part 160.1 prescribes that GLP should be followed for 

studies used to support pesticide registrations. The MRID states that it was not conducted under 

GLP. The uses on agricultural crops allow for ground, aerial, and airblast applications of a 

flowable material.

5

 The scatter bait is applied as a dry material on surfaces or placed in a bait 

station and no spray drift is expected with this use. The scatter bait use is evaluated as a granule 

formulation. For the agricultural crop uses, EDWC for broadcast aerial spray applications were

estimated as these will result in higher concentrations than a ground or airblast application. One 

aerobic aquatic metabolism value was available (25 for parent only and 74 days for parent and 

unextracted residues in a loamy sand; MRID 44988513). These values were multiplied by three 

to obtain the model input values of 75 and 222 days for FIRST. The 34-day aqueous photolysis 

half-life input value reflects corrections for continuous illumination as well as for latitude/season 

to reflect photolysis in summer sunlight at 40o N latitude. 

The FIRST output file and SCI-GROW output file are located in Appendix A.

 4 The values used to calculate the 90th percentile value were 1.1, 1.2, 1.0, 2.8, 0.9, 6.0, 1.4, and 3.5 days for parent 

only and 76, 75, 99, 2.8, 0.9, 10, 2, and 6.4 days for parent and unextracted residues. In previous drinking water 

assessments results from MRID 46255603 were not used in modeling. The results from this study were used in 

modeling in this assessment. The main deficiency in the study was that there was only one replicate. 5 In the previous assessment, the soluble granule (SG) formulation was assumed to be applied as a granule which 

would result in no spray drift; however, the label states that the soluble granule should be dissolved in a liquid prior 

to application and therefore, it was treated as a flowable in this assessment.
7

Table 2. FIRST (v1.1.0) Input Parameter Values for Acetamiprid use on Soybeans

Parameter Value Source Comment

Application Rate (lbs 

a.i./A)1

See Table 4. 

Proposed Label See Section titled “Proposed Use” for 

full explanation.

Number of Applications Proposed Label

Interval between 

Applications (days) Proposed Label

Organic carbon 

partitioning coefficient

(KOC; mL/g OC)

227 MRID 44651884

Mean of five KOC values. See text. 

Aerobic Soil 

Metabolism Half-life 

(days)

Parent Only: 3.1

Parent+Unextracted 

Residues: 55

MRIDs 

44655603,

44651881, 

44699101, 

44651879

The 90th percentile upper confidence 

bound on the mean of eight values. 

Wetted in? No Proposed label. None

Depth of Incorporation 

(inches) 0 Proposed label. None

Method of Application ground and aerial spray Proposed label. None

Percent Cropped Area

(PCA) 1.0 PCA Guidance (USEPA, 2010a)

There are currently registered 

residential and rights-of-way uses.

Solubility in Water 

(mg/L) 4250 MRID 44651811 Measured at 25o

C

Aerobic Aquatic 

Metabolism Half-life 

(days)

Parent: 75

Parent+ Unextracted 

Residues: 222

MRID 44988513

Measured value times three to account 

for uncertainty associated with using a 

single value.

Hydrolysis Half-life at

pH 7 (days) Stable (0) MRID 44651876 None

Aquatic Photolysis 

Half-life at pH 7 (days) 34 MRID 44988509 None

Table 3. SCI-GROW (v2.3) Input Parameter Values for Acetamiprid Use on Soybeans

Parameter Value Source Comments

Application Rate (lbs 

a.i./acre) See Table 4 Proposed label See Section titled “Proposed Use” for full explanation.

Number of 

applications Proposed label

Koc (mL/g) 251 MRID 44651884

Median of five values. There is not a 

three fold difference in observed values. 

See text. 

Aerobic soil 

metabolism t 1⁄2 (days)

Parent Only: 1.3

Parent+Unextracted 

Residues: 8.2

MRIDs 44655603,

44651881, 

44699101, 

44651879

The median of eight

values. 
8

Modeling Results

Estimated acetamiprid concentrations in surface water and ground water used for drinking water 

are summarized in Table 4. Use scenarios evaluated in previous drinking water assessments and 

the proposed uses were evaluated. Acute estimated acetamiprid concentrations in surface water 

used for drinking water ranged from 6 to 95 μg/L. Estimated annual average concentrations 

ranged from 2 to 27 μg/L. Simulated concentrations in ground water ranged from 0.0004 to 

0.035 μg/L. As unextracted residues were assumed to be the parent for most modeling and it is 

uncertain whether the unextracted residues are the parent, the scenarios resulting in the highest 

EDWC using inputs that assumed unextracted residues were the parent were also modeled using 

inputs calculated for known residues of parent only (e.g., assuming that the unextracted residues 

were not the parent compound). These inputs for both parent only and parent+unextracted 

residues are shown in the input tables. The acute, annual average and ground water EDWCs for

parent and unextracted residues are 6, 10 and 35 times the EDWCs for parent alone for the bait 

high scenario. The acute, annual average and ground water EDWCs for parent and unextracted 

residues are 4, 6, and 33 times the EDWCs for parent alone for the tree nut scenario. The 

identity of the unextracted residues is a significant source of uncertainty given that it makes an 

order of magnitude difference on the EDWCs. The high use bait scenario resulted in the highest 

EDWC. For this value to occur, the scatter bait would need to be applied to a large consecutive 

area 24 times per year. For the scatter bait use, it is expected that only a portion of a large area 

will be treated and that 24 consecutive applications will not be needed; however, the label does 

not specify a lower maximum application rate for a large area or a maximum number of 

applications. With additional information on the use pattern, the modeling for this use could be 

refined, with the likely result being lower EDWCs.
9

Table 4. Estimated Concentrations of Acetamiprid in Surface Water and Groundwater Source Drinking Water. Values with 

an asterisk were calculated for parent residues only. Values without an asterisk were calculated for parent and unextracted 

residues.

Use Site/ Source

Single App. 

Rate

(lbs. a.i./A)

Number of 

Apps.

Seasonal 

App. Rate 

(lbs. 

a.i./A)

Interval 

Between 

Apps. 

(days)

App. 

Method

Surface Water Groundwater 

Concentration

(μg/L)

Acute 

(μg/L)

Annual 

Average

(μg/L)

RF2157 Insecticide/Dry Material/ 8033-XXX1

Scatter Bait 0.082 NS

1 (assumed)

NS (0.082 

assumed) NA Ground 5.92 1.65 0.001

Scatter Bait 0.082

NS

24 

(assumed)

NS (2.0 

assumed)

NS (3 

assumed) Ground 95.216.3*

26.6

2.65*

0.035

0.001*

Bait Stations 0.082 1 NS NS Bait Station Assumed to be negligible

ASSAIL ® 70WP/ Wettable Powder/ 8033-23 and ASSAIL® 30SG/ Soluble Granule/ 8033-36

Cotton 0.1 4 0.4 7 Air 26.5 7.56 0.007

Leafy Vegetables within Crop Group 

4 0.075 5 0.375 7 Air 23.95 6.83 0.007

Head and Stem Cole Crops 0.075 5 0.375 7 Air

Leafy Cole Crops (within Crop

Subgroup 5B) and Turnip Greens 0.1 4

0.375 (0.4 

assumed

for 

modeling)

7 Air 26.5 7.56 0.007

Fruiting Vegetables (within Crop 

Group 8-10) 0.075 4 0.3 7 Air 19.9 5.67 0.005

Citrus (within Crop Group 10-10)2

0.25 5 0.55 7 Air Assumed a uniform application rate for Tier I 

modeling as shown in next two rows

0.25

(assumed) 2 (assumed) 7 Air 35.9 10.2 0.009

0.11 

(assumed) 5 0.55 7 Air 35.1 10.0 0.010

Pome Fruit (within Crop Group 11-

10) 0.15 4 0.60 12 Air 36.8 10.5 0.011

Tuberous and Corm Vegetables 

(within Crop Sub-group 1C)2 0.075 4 0.3 7 Air 19.9 5.67 0.005

Tobacco2 0.075 4 0.3 7 Air 19.9 5.67 0.005

Grapes and Other Climbing Small 

Fruits (except Fuzzy Kiwifruit, 0.1 2 0.2 14 Air 13.8 3.94 0.004
10

Use Site/ Source

Single App. 

Rate

(lbs. a.i./A)

Number of 

Apps.

Seasonal 

App. Rate 

(lbs. 

a.i./A)

Interval 

Between 

Apps. 

(days)

App. 

Method

Surface Water Groundwater 

Concentration

(μg/L)

Acute 

(μg/L)

Annual 

Average

(μg/L)

within Crop Sub-group 13-07F)2

Stone Fruit (within Crop Group 12) 0.15 4 0.6 10 Air 37.9 10.8 0.011

Cucurbits (within Crop Group 9) 0.10 5 0.5 5 Air 33.4 9.50 0.009

Tree Nuts (within Crop Group 14, 

including Pistachio)2 0.18 4 0.72 14 Air 42.812.1*

12.2

1.88*

0.013

0.0004*

Edible Podded Legume (within Crop 

Subgroup-6A) and Succulent Shelled 

Peas and Beans (within Crop Subgroup 6B)

0.1 3 0.3 7 Air 20.7 5.90 0.006

Strawberries and Other Low 

Growing Berries (within Crop Subgroup 13-07G)0.13 2 0.26 7 Air 18.7 5.31 0.005

Blueberries and Other Bush Berries 

(within Crop Sub-Group 13-07B) and 

Cane Berries (within Crop Sub-group 

13-07A)

0.085 5 0.5 7 Air 27.1 7.74 0.008

Onions and Other Bulb Vegetables 

(within Crop Group 3-07) 0.15 4 0.6 7 Air 39.8 11.3 0.011

Clover (for use in OD, OR, and WA 

only) 0.075 1 0.075 NA Air 5.61 1.60 0.001

Asparagus 0.1 2 0.2 10 Air 14.1 4.02 0.004

Sweet Corn 0.1

4 (2 

assumed for 

modeling)

0.21 7 Air 14.1 4.02 0.004

TriStar 30 SG/ Soluble Granule/ 8033-94/ Modeling Updated

Greenhouse-grown Tomatoes2 0.075 2 0.15 3 assumed Soil 

drenching 11.0 3.14 0.003

Justice ® Insecticide/ Flowable/ 8033-XXX1, modeling updated

Soybean2 0.04 2 0.08 7 Aerial 5.75 1.64 0.001

Abbreviations: NS=not specified; ND=not determined; NA=Not applicable; App=Application

1 The proposed registrations will not get a full registration number until the product is registered. The XXX reflects the numbers that will be completed with 

registration.

2 Uses on citrus (D364248), potatoes (D301859), tobacco (D301859), tree nuts (D364248), grapes and other climbing small fruits (D364248), greenhouse-grown 

tomatoes (D364248), and soybeans (D390070) were previously assessed (USEPA, 2011, D390070).
11

Monitoring Data

The following databases and sources were searched for monitoring information on acetamiprid:

• The United States Environmental Protection Agency (USEPA) STORET Database 

(http://www.epa.gov/storet/dbtop.html)

• The United States Geological Survey (USGS) National Water-Quality Assessment 

(NAWQA) Program Data Warehouse 

(http://infotrek.er.usgs.gov/traverse/f?p=NAWQA:HOME:1405517206944567)

• The USGS National Stream Quality Accounting Network (NASQAN) program 

(http://water.usgs.gov/nasqan/)

No monitoring information was found.

Drinking Water Treatment

There is no available information on the effects of drinking water treatment on acetamiprid. The 

EDWCs in this assessment are representative of concentrations in drinking water source water 

(pre-treatment). For surface water, the conceptual model assumes that a pesticide reaches 

surface water via spray drift or surface runoff and it is instantaneously mixed and concentrations 

are observed in the water body. Acetamiprid is stable to hydrolysis. Therefore, acetamiprid will 

not degrade by hydrolysis during the time that elapses from drinking water intake through 

distribution to the first tap. Photolysis is a relatively unimportant degradation pathway. 

Additionally, the half-life is much longer than the residence time of the water within a typical 

treatment plant. Therefore, if ultraviolet light were used as a means of disinfection, degradation

of acetamiprid would not be expected to be significant. Acetamiprid does degrade via aerobic 

metabolism in soil and sediment and some may degrade in an aerobic digester where aerobic 

metabolism occurs. The most successful drinking water treatment process for removal of 

pesticides from drinking water is thought to be treatment with granular activated carbon (GAC) 

which is only used in larger drinking water treatment facilities. The ability of GAC to remove 

pesticides will vary with the properties of the chemical, the viability of the biofilm on the GAC, 

and whether the sorption sites on GAC have reached capacity (Badriyha et al., 2003; Zhao et al., 

1999). Data on the sorption of acetamiprid to GAC are not available; however, a high 

percentage of sorption and thus removal of acetamiprid to GAC is likely to occur as much 

acetochlor (reported KOC of 156 L/kg) was removed from river water treated with GAC (AERU, 

2009; Badriyha et al., 2003).

Uncertainties

The estimated concentrations provided in this assessment were generated from Tier 1 models and 

are conservative estimates of acetamiprid concentrations in untreated drinking water. There 

were a number of uncertainties associated with this drinking water exposure assessment. The 

major uncertainty is whether the highest use pattern for acetamiprid was evaluated and what the 

maximum number of applications would be for the scatter bait use. Another source of 

uncertainty in the assessment is the inclusion of unidentified, unextracted residues in the 

calculation of aerobic soil metabolism half-lives. For the scenarios resulting in the highest 
12

EDWC, inclusion of unextracted residues in half-life calculations resulted in EDWCs that are 4 

to 35 times EDWCs based on parent alone. Therefore, the identity of the unextracted residues 

results in a significant uncertainty in the risk assessment. There is also uncertainty associated

with modeling with FIRST and SCI-GROW. They are both Tier I models and therefore could 

potentially over- estimate chemical concentrations. If dietary risks require refinement, higher 

tiered models and modeling scenarios can be utilized upon request. 

Literature Cited

AERU. 2009. The FOOTPRINT Pesticide Properties Database. Agriculture & Environment 

Research Unit (AERU). Available at http://sitem.herts.ac.uk/aeru/footprint/ (Accessed 

July 9, 2009).

Badriyha, B. N., Ravindran, V., Den, W., & Pirbazari, M. 2003. Bioadsorber efficiency, design, 

and performance forecasting for alachlor removal. Water Research, 37.

Burns, L. A. 2000. Exposure Analysis Modeling System (EXAMS): User Manual and System 

Documentation. Revision G. EPA/600/R-00/81-023. September 2000. Ecosystems 

Research Division. National Exposure Research Laboratory. United States 

Environmental Protection Agency. 

Carsel, R. F., Imhoff, J. C., Hummel, P. R., Cheplick, J. M., & Donigian Jr., J. S. 1997. PRZM-3, 

A Model for Predicting Pesticide and Nitrogen Fate in Crop Root and Unsaturated Soil 

Zones: Users Manual for Release 3.0. Memorandum From to Environmental Research 

Laboratory. Office of Research and Development. United States Environmental 

Protection Agency. 

USEPA. 2001. Acetamiprid. Results of the HED Metabolism Assessment Review Committee. 

D278652. Memorandum From H. Bietlot, M. Doherty & P. Hurley to Y. Donovan. 

Office of Prevention, Pesticides, ans Toxic Substances. United States Environmental 

Protection Agency. 

USEPA. 2009. Guidance for Selecting Input Parameters in Modeling the Environmental Fate 

and Transport of Pesticides, Version 2.1. Environmental Fate and Effects Division. 

Office of Pesticide Programs. United States Environmental Protection Agency. Available 

at http://www.epa.gov/oppefed1/models/water/input_parameter_guidance.htm (Accessed 

November 12, 2010).

USEPA. 2010a. Guidance on Development and Use of Percent Cropped Area Adjustment 

Factors in Drinking Water Exposure Assessments. Environmental Fate and Effects 

Division, Office of Pesticide Programs, United States Environmental Protection Agency. 

Available at http://www.epa.gov/oppefed1/models/water/pca_adjustment_dwa.pdf

(Accessed November 29, 2010).

USEPA. 2010b. Guidance on Development and Use of the Index Reservoir in Drinking Water 

Exposure Assessments. September 14, 2010. Environmental Fate and Effects Division. 

Office of Pesticide Programs. United States Environmental Protection Agency. Available 

at http://www.epa.gov/oppefed1/models/water/index_reservoir_dwa.pdf (Accessed 

December 9, 2010).

USEPA. 2011.D390070. Tier I Drinking Water Exposure Assessment for the Section 3 New Use 

of Acetamiprid on Soybeans to Control a Variety of Insect Pests. D390070. 

Memorandum From K. White to M. Doherty, C. Swartz & J. Urbanski. July 21, 2011. 
13

Environmental Fate and Effects Division. Office of Chemical Safety and Pollution 

Prevention. United States Environmental Protection Agency. 

Zhao, X., Hickey, R. F., & Voice, T. C. 1999. Long-term evaluation of adsorption capacity in a 

biological activated carbon fluidized bed reactor system. Water Research, 33(13).
14

Appendix A. Modeling Output files

 

 RUN No. 1 FOR acetamiprid ON scatter ba * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.082( 1.318) 24 3 227.0 4250.0 GRANUL( 0.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 0.00 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 95.195 26.550

 RUN No. 2 FOR acetamiprid ON bait low s * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.082( 0.082) 1 1 227.0 4250.0 GRANUL( 0.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 5.922 1.652
15

 RUN No. 3 FOR acetamiprid ON cotton * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.100( 0.352) 4 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 26.546 7.564

 RUN No. 4 FOR acetamiprid ON leafy vege * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.075( 0.317) 5 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 23.948 6.828

 RUN No. 6 FOR acetamiprid ON leafy cole * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)
16

 --------------------------------------------------------------------

 0.100( 0.352) 4 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 26.546 7.564

RUN No. 1 FOR acetamiprid ON fruit * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.075( 0.264) 4 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 0.00 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 19.909 5.673

 RUN No. 2 FOR acetamiprid ON citrus * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.250( 0.479) 2 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------
17

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 35.908 10.220

 RUN No. 3 FOR acetamiprid ON pome * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.150( 0.485) 4 12 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 36.777 10.492

 RUN No. 4 FOR acetamiprid ON citrus 2 * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.110( 0.465) 5 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90
18

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 35.123 10.014

 RUN No. 5 FOR acetamiprid ON corm * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.075( 0.264) 4 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (NANOGRAMS/LITER (PPTr)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 0.000 0.000

 RUN No. 6 FOR acetamiprid ON corm * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.075( 0.264) 4 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------
19

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 19.909 5.673

 RUN No. 7 FOR acetamiprid ON Tobacco * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.100( 0.184) 2 14 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 13.819 3.935

 RUN No. 8 FOR acetamiprid ON Stone * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.150( 0.502) 4 10 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 37.943 10.819
20

 RUN No. 9 FOR acetamiprid ON cucurbits * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.100( 0.443) 5 5 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 33.351 9.502

 RUN No. 10 FOR acetamiprid ON tree nuts * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.180( 0.563) 4 14 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 42.808 12.218

 RUN No. 11 FOR acetamiprid ON legume * INPUT VALUES * 
21

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.100( 0.275) 3 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 20.704 5.896

 RUN No. 12 FOR acetamiprid ON strawberri * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.130( 0.249) 2 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 18.672 5.314

 RUN No. 1 FOR acetamiprid ON blue * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.085( 0.359) 5 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0
22

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 0.00 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 27.141 7.738

 RUN No. 2 FOR acetamiprid ON onion * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.150( 0.528) 4 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 39.819 11.346

 RUN No. 2 FOR acetamiprid ON clover * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.075( 0.075) 1 1 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------
23

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 5.609 1.595

 RUN No. 3 FOR acetamiprid ON asparagus * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.100( 0.188) 2 10 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 14.124 4.021

 RUN No. 4 FOR acetamiprid ON sweet corn * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.100( 0.352) 4 7 227.0 222.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90
24

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 26.546 7.564

 RUN No. 5 FOR acetamiprid ON sweet corn * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.100( 0.352) 4 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 26.546 7.564

 RUN No. 6 FOR acetamiprid ON tomato * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.075( 0.147) 2 3 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------
25

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 11.022 3.136

 RUN No. 7 FOR acetamiprid ON soybean * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.040( 0.077) 2 7 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 55.00 2 N/A 34.00- 4216.00 222.00 210.90

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 5.745 1.635

 RUN No. 8 FOR acetamiprid ON bait * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.082( 0.168) 24 3 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 3.10 2 N/A 34.00- 4216.00 75.00 73.69

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 16.341 2.654
26

 RUN No. 9 FOR acetamiprid ON tree nut p * INPUT VALUES * 

 --------------------------------------------------------------------

 RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP

 ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

 --------------------------------------------------------------------

 0.180( 0.188) 4 14 227.0 4250.0 AERIAL(16.0) 100.0 0.0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS) 

 --------------------------------------------------------------------

 METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED

 (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.-EFF) (RESER.) (RESER.) 

 --------------------------------------------------------------------

 3.10 2 N/A 34.00- 4216.00 75.00 73.69

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.1 MAR 26, 2008

 --------------------------------------------------------------------

 PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) 

 CONCENTRATION CONCENTRATION 

 --------------------------------------------------------------------

 12.090 1.882

 SCIGROW

 VERSION 2.3

 ENVIRONMENTAL FATE AND EFFECTS DIVISION

 OFFICE OF PESTICIDE PROGRAMS

 U.S. ENVIRONMENTAL PROTECTION AGENCY

 SCREENING MODEL

 FOR AQUATIC PESTICIDE EXPOSURE

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:52:21

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.082 1.0 0.082 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 1.46E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:53:20

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.082 24.0 1.968 2.51E+02 8.2

------------------------------------------------------------------------
27

groundwater screening cond (ppb) = 3.50E-02 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:53:47

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.100 4.0 0.400 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 7.10E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:54: 8

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.075 5.0 0.375 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 6.66E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:54:28

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.100 4.0 0.400 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 7.10E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:54:41

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.075 4.0 0.300 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 5.33E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:54:58

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)
28

------------------------------------------------------------------------

 0.075 4.0 0.300 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 5.33E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:55: 5

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.250 2.0 0.500 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 8.88E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:55:21

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.110 5.0 0.550 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 9.77E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:56: 0

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.150 4.0 0.600 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 1.07E-02 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:56:20

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.075 4.0 0.300 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 5.33E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:56:43
29

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.100 2.0 0.200 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 3.55E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:56:57

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.150 4.0 0.600 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 1.07E-02 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:57:22

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.100 5.0 0.500 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 8.88E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:57:37

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.180 4.0 0.720 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 1.28E-02 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:58: 1

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.110 3.0 0.330 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 5.86E-03 

************************************************************************
30

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:58:14

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.130 2.0 0.260 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 4.62E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:58:30

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.085 5.0 0.425 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 7.55E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:58:44

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.150 4.0 0.600 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 1.07E-02 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:59: 0

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.075 1.0 0.075 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 1.33E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:59:18

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.100 2.0 0.200 2.51E+02 8.2

------------------------------------------------------------------------
31

groundwater screening cond (ppb) = 3.55E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 13:59:43

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.100 4.0 0.400 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 7.10E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 14: 0:14

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.100 2.0 0.200 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 3.55E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 14: 0:43

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.075 2.0 0.150 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 2.66E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 14: 0:56

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.040 2.0 0.080 2.51E+02 8.2

------------------------------------------------------------------------

groundwater screening cond (ppb) = 1.42E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 14: 1:37

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)
32

------------------------------------------------------------------------

 0.082 24.0 1.968 2.51E+02 1.3

------------------------------------------------------------------------

groundwater screening cond (ppb) = 1.19E-03 

************************************************************************

SciGrow version 2.3

chemical:acetamiprid

time is 10/ 7/2011 14: 1:58

------------------------------------------------------------------------

 Application Number of Total Use Koc Soil Aerobic

 rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------

 0.180 4.0 0.720 2.51E+02 1.3

------------------------------------------------------------------------

groundwater screening cond (ppb) = 4.37E-04 

************************************************************************