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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

WASHINGTON D.C., 20460

 OFFICE OF 

 PREVENTION, PESTICIDES AND

 TOXIC SUBSTANCES

May 26, 2005

MEMORANDUM

SUBJECT: Reassessment of the Environmental Risk and Data Requirements of Prallethrin, 

after Product Label Revision for MULTICIDE® Fogging Concentrate 2798

(PC Code 128722; DP Barcode D312733)

TO: George LaRocca, Product Manager #13

Registration Division (7505C)

FROM: Gabe Patrick, Biologist

José Luis Meléndez, Chemist

ERB V/Environmental Fate and Effects Division (7507C)

THROUGH: Mah T. Shamim, Ph.D., Chief

Environmental Risk Branch V

Environmental Fate and Effects Division (7507C)

The following data requirements are no longer outstanding:

Environmental Fate

Aerobic Aquatic Metabolism (162-4) - The studies (MRID 44860101, 44861002, two 

radiolabels) were considered supplemental. They provide information about systems that may be 

partly aerobic and partly anaerobic. The systems were flooded prior to application of the test 

material, which may have caused anaerobic conditions. The registrant indicated that the reports 

show that the dissolved oxygen was measured in the water phase (resulting in 40-73% relative 

dissolved oxygen, providing an indirect measure of the aerobicity of the water phase; however, the 

aerobicity of the sediment is uncertain). They also argue that they followed the current guidelines 

at the time of the analysis. For this chemical, the risks were well below the levels of concern (for 

the most sensitive species, freshwater and estuarine/marine invertebrates, RQs<0.00). At this 

time, the EFED will not require additional data. The study will not be upgraded to acceptable, 

and will remain supplemental. Should the registrant wish to add uses of this chemical, the EFED 
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will reassess the data requirement. EFED advises the registrant that in future studies, the 

aerobicity of the system must be measured in the water and in the sediment.

Eco-toxicity

Acute Freshwater Fish Toxicity - Bluegill [72-1(b) or 850.1075] and Rainbow Trout [72-1(d) 

or 850.1075] - TEPs: Testing with the TEP, MULTICIDE® Fogging Concentrate 2798, is 

needed because MULTICIDE® Fogging Concentrate 2798 insecticide (it contains 1.00% 

prallethrin, 5.00% sumithrin, and 5.00% piperonyl butoxide) will be deposited in water from ULV 

ground applications and aerial applications, and will be used in combination with the synergist, 

piperonyl butoxide which is expected to enhance the toxicity of prallethrin in MULTICIDE®

Fogging Concentrate 2798. Now, EFED is seeking TEP testing for the most prallethrin sensitive 

aquatic surrogate species, mysid shrimp. After evaluating the results of mysid shrimp TEP, 

testing EFED will decide if more TEP testing is needed for freshwater fish species. EFED is 

reserving the need for this study.

Acute Freshwater Invertebrate Toxicity - TEP [72-2(b)]: Testing with the TEP, 

MULTICIDE® Fogging Concentrate 2798, is needed because MULTICIDE® Fogging 

Concentrate 2798 insecticide (it contains 1.00% prallethrin, 5.00% sumithrin, and 5.00% 

piperonyl butoxide) will be deposited in water from ULV ground applications and aerial 

applications, and will be used in combination with the synergist, piperonyl butoxide which is 

expected to enhance the toxicity of MULTICIDE® Fogging Concentrate 2798. Now, EFED is 

seeking TEP testing for the most prallethrin sensitive aquatic surrogate species, mysid shrimp. 

After evaluating the results of mysid shrimp TEP, testing EFED will decide if more TEP testing is 

needed for freshwater invertebrate species. EFED is reserving the need for this study.

Acute Estuarine/Marine Fish Toxicity - TEP [72-3(d)]: Testing with the TEP, MULTICIDE®

Fogging Concentrate 2798, is needed because MULTICIDE® Fogging Concentrate 2798 

insecticide (it contains 1.00% prallethrin, 5.00% sumithrin, and 5.00% piperonyl butoxide) will be 

deposited in water from ULV ground applications and aerial applications, and will be used in 

combination with the synergist, piperonyl butoxide which is expected to enhance the toxicity of 

MULTICIDE® Fogging Concentrate 2798. Now, EFED is seeking TEP testing for the most 

prallethrin sensitive aquatic surrogate species, mysid shrimp. After evaluating the results of 

mysid shrimp TEP, testing EFED will decide if more TEP testing is needed for estuarine/marine 

fish species. EFED is reserving the need for this study.

Acute Estuarine/Marine Mollusk Toxicity- TEP [72-3(e)]: Testing with the TEP, 

MULTICIDE® Fogging Concentrate 2798, is needed because MULTICIDE® Fogging 

Concentrate 2798 insecticide (it contains 1.00% prallethrin, 5.00% sumithrin, and 5.00% 

piperonyl butoxide) will be deposited in water from ULV ground applications and aerial 

applications, and will be used in combination with the synergist, piperonyl butoxide which is 

expected to enhance the toxicity of MULTICIDE® Fogging Concentrate 2798. Now, EFED is 

seeking TEP testing for the most prallethrin sensitive aquatic surrogate species, mysid shrimp. 

After evaluating the results of mysid shrimp TEP, testing EFED will decide if more TEP testing is 

needed for estuarine/marine mollusk species. EFED is reserving the need for this study.
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Estuarine/Marine Fish Early Life-Stage - TGAI [72-4(b)]: At this time, EFED doesn’t need 

this study. EFED requested (initial assessment dated 10/29/03) an estuarine/marine fish early 

life-stage toxicity test using the TGAI for prallethrin. MULTICIDE® Fogging Concentrate 2798 

will be transported estuarine/marine water bodies from terrestrial use. EFED wanted this testing 

because prallethrin’s presence in water is likely to be continuous or recurrent and prallethrin’s 

aquatic acute LC50 and EC50 are less than 1 ppm. Prallethrin’s sheepshead minnow LC50 is 26 ppb 

and mysid shrimp EC50 is 3.9 ppb. The registrant in a September 30, 2004 letter to the Agency, 

requested EFED waive this requirement. The registrant noting prallethrin was more acutely toxic 

to freshwater fish (rainbow trout LC50 = 12 ppb) than to estuarine/marine fish (sheepshead minnow 

LC50 = 26 ppb). Because of this, the registrant wanted EFED to use the chronic freshwater fish 

toxicity (rainbow trout chronic NOAEC = 3 ppb) to characterize the chronic risk to 

estuarine/marine fish. EFED made a cursory examination of EFED’s Ecotox One-Liner database 

for pyrethroid chemicals. This examination, with limited data, supported the conclusion that 

pyrethroids more acutely toxic to freshwater fish than estuarine/marine fish can also be expected to 

be more toxic on a chronic basis. EFED will waive this requirement for prallethrin (M. Rexrode, 

per. com., 4/28/05). Future chronic risk characterization to estuarine/marine fish will use the 

rainbow trout chronic NOAEC of 3 ppb.

Freshwater Fish Full Life Cycle - TGAI (72-5 or 850.1500): At this time, EFED does not 

need a freshwater fish full life cycle test using the TGAI for prallethrin. Prallethrin’s 

aquatic exposure is predicted to be less than the EEC level needed for testing. The 

maximum modeled EEC predicted for prallethin in water is 8.76 ppt (0.00876 ppb). This 

level is less than one-tenth of the NOAEC in the fish early life-stage or invertebrate life 

cycle test. The rainbow trout early life-stage NOAEC for prallethrin is 3.0 ppb and the 

daphnia life cycle NOAEC for prallethrin is 0.65 ppb. One-tenth the daphnia life cycle 

NOAEC is 0.065 ppb which is greater than the maximum predicted aquatic EEC for 

prallethin (that is, 0.00876 ppb). This suggests, at maximum predicted EECs, 

prallethin’s exposure should be below levels showing a chronic effect in aquatic 

organisms. EFED is reserving the need for this study. Should the registrant wish to add uses of 

this chemical, EFED will reassess the data requirement

Estuarine and Marine Whole Sediment Toxicity Invertebrates, Acute - TGAI (850.1740): 

EFED is reserving the need for testing with estuarine/ marine invertebrates using the TGAI. The 

registrant in a September 30, 2004 letter to the Agency agreed to Freshwater Whole Sediment 

Toxicity Invertebrates, Acute - TGAI (850.1735) testing using the amphipod, Hyallella 

azteca. The registrant agreed to conduct 850.1740 testing, if adverse effects are noted 

in 850.1735 testing.

Estuarine/Marine Invertebrate Life-Cycle - TGAI [72-4(b)]: At this time, EFED doesn’t 

need this study. EFED requested (first assessment dated 10/29/03) this study because EFED

expects MULTICIDE® Fogging Concentrate 2798 will be applied over estuarine/marine water 

bodies and will be transported to these environments from terrestrial use. EFED needed this 

testing because prallethrin’s presence in water is likely to be continuous or recurrent and 

prallethrin’s aquatic acute LC50 and EC50 are less than 1 ppm. Prallethrin’s sheepshead minnow 
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LC50 is 26 ppb and mysid shrimp EC50 is 3.9 ppb. However, the latest modeling for 

MULTICIDE® Fogging Concentrate’s uses shows the peak water column levels of prallethrin 

expected are 0.00876 ppb and the 21-day concentrations expected are 0.00532 ppb. These 

expected prallethrin aquatic EEC levels are two orders of magnitude below the lowest 

estuarine/marine acute toxicity endpoint (that is, mysid shrimp EC50 = 3.9 ppb) for prallethrin. 

Based on this, EFED doesn’t expect adverse prallethrin acute or chronic effects to 

estuarine/marine invertebrates from MULTICIDE® Fogging Concentrate’s proposed uses. 

EFED is reserving the need for this study. Should the registrant wish to add uses of this chemical, 

EFED will reassess the data requirement.

Aquatic Degradate Testing: In previous assessments EFED requested aquatic degradate testing 

for prallethrin degradates. EFED made this request because prallethrin degrades rapidly with a 

pseudo first-order half-life of 13.6 hours in aqueous photolysis testing. Photodegradation is the 

primary route of prallethrin transformation. The major degradates are ketolon at 37.3% of the 

applied. PGLS comprised a maximum of 26.0% at 192 hours. Keto-PGLS comprised a 

maximum of 16.5% after 24 hours of irradiation. EFED may need degradate testing if the parent 

material is short-lived and any degradate is formed in large percentage. EFED reassessed the 

need for prallethrin degradate testing through closer examination of these degradates. EFED has 

now determined these degradates are the result of the rupture of the ester linkage of the parent, 

resulting in a break of the basic frame or backbone structure of the pyrethroid prallethrin. EFED 

believes that these degradates may have lost their activity in the process and that they are probably 

less toxic than the parent. Because of this, EFED waives the need for prallethrin degradate testing 

at this time.

The following are outstanding data requirements:

Eco-toxicity

Honey Bee Residue on Foliage - Typical End-use Product (TEP) (141-2 or 850.3030): A 

guideline study is required to be submitted with MULTICIDE® Fogging Concentrate 2798 at the 

maximum allowable application rates to determine the residual toxicity of this product to bees as 

the result of an Ultra Low Volume (ULV) application.

Freshwater Whole Sediment Toxicity Invertebrates, Acute - TGAI (850.1735): Testing using 

the TGAI is required to determine the toxicity and bioaccumulation potential of prallethrin in 

sediments in benthic organisms. Testing is required for prallethrin because prallethrin is toxic to 

aquatic invertebrates, binds to sediment, and may persist on sediment surfaces. The registrant in a 

September 30, 2004 letter to the Agency agreed to Freshwater Whole Sediment Toxicity 

Invertebrates, Acute - TGAI (850.1735) testing using the amphipod, Hyallella azteca. This 

species testing is agreeable to EFED (M. Rexrode, per. com., 4/28/05). Testing using 

Chironomus tentans is reserved pending the results using the test species, Hyallella azteca.

- Test organism: Hyallella azteca.

- Duration: 10 days, endpoint is survival.
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Acute Estuarine/Marine Shrimp Toxicity - TEP [72-3(f)]: Testing with the TEP, 

MULTICIDE® Fogging Concentrate 2798, is needed because MULTICIDE® Fogging 

Concentrate 2798 insecticide (it contains 1.00% prallethrin, 5.00% sumithrin, and 5.00% 

piperonyl butoxide) will be deposited in water from ULV ground applications and aerial 

applications, and will be used in combination with the synergist, piperonyl butoxide which is 

expected to enhance the toxicity of the MULTICIDE® Fogging Concentrate 2798. EFED expects 

the synergist, piperonyl butoxide, will likely increase the acute aquatic toxicity of prallethrin 

fivefold or more (R. Lee, per. com., 5/25/05) compared to the toxicity of prallethrin used alone. 

Because of this, EFED needs TEP testing on the most sensitive aquatic species. Acutely, mysid 

shrimp is the most prallethrin sensitive aquatic surrogate species (EC50 = 3.9 ppb). 

Seedling Emergence and Vegetative Vigor - Tier I - TEP [122-1(a & b)]: Terrestrial plant 

Tier I seedling emergence and vegetative vigor testing of a prallethrin Technical End-Use product 

(TEP) is needed for all pesticides having outdoor uses. Testing with the TEP, MULTICIDE®

Fogging Concentrate 2798, is needed.

Aquatic Plant Growth - Tier I - TEP (122-2): Aquatic plant testing is needed for all pesticides 

having outdoor uses. Tier I aquatic plant testing is a maximum dose test designed to quickly 

evaluate the toxic effects to the test species in terms of growth and reproduction and to determine 

the need for additional aquatic plant testing. Testing with the TEP, MULTICIDE® Fogging 

Concentrate 2798, is needed.

Structure of Prallethrin
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Conclusions:..................................................................................................................................-9-

Uncertainties: ................................................................................................................................-9-

Background:................................................................................................................................-10-

EFED Response: .........................................................................................................................-11-

Appendix A. Equilibrium Partitioning Model and Risk Estimation for Benthic Organisms...-20-

Equilibrium Partitioning .................................................................................................-20-

Assumptions of the equilibrium partitioning model .......................................................-21-

Appendix B. Output Files from AGDISP and PRZM/EXAMS .................................................-23-

AGDISP Numerical Values:...........................................................................................-23-

Input Summary: ..............................................................................................................-23-

Aquatic Deposition Assessment .....................................................................................-26-

PRZM/EXAMS Output Files..........................................................................................-26-

4 inch pond depth............................................................................................................-26-

Water column......................................................................................................-26-

Pore water ...........................................................................................................-29-

1 foot depth .....................................................................................................................-32-

Water column......................................................................................................-32-

Pore water ...........................................................................................................-35-

1 meter depth...................................................................................................................-38-

Water column......................................................................................................-38-

Pore water ...........................................................................................................-41-

2 meters pond depth (standard pond)..............................................................................-44-

Water column......................................................................................................-44-

Pore water ...........................................................................................................-47-

Appendix C. Data Requirements ................................................................................................-51-

Ecological Effects Data Requirements for: Prallethrin ................................................-51-

Environmental Fate Data Requirements for: Prallethrin ................................................-53-
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Conclusions:

The registrant, MGK (McLaughlin Gormley King Company), seeks full registration of prallethrin, 

for the control of adult nuisance insects (e.g., mosquitos, midges, gnats, black flies, etc.) at outdoor 

residential/recreational areas (vegetation surrounding parks, woodlands, swamps, marshes, 

overgrown areas, and golf courses). At this time, the registrant submitted a revised label for 

MULTICIDE® Fogging Concentrate 2798, which includes restrictions related to the boom height 

(recommended 50-300 ft), and the interval between applications (recommended 7 days, except 

under high pressure). Furthermore, the label restricts the aerial uses of the product in the state of 

Florida except under certain circumstances (specifically authorized by the Bureau of Entomology, 

Florida Department of Agriculture and Consumer Services). The registrant addressed some of 

the outstanding data requirements imposed in a previous action. The following are the findings:

Based on the assumptions that the maximum application rate of prallethrin is 0.0008 lb/A, that 

prallethrin is not applied directly over water, but it reaches adjacent bodies of water via spray drift, 

a model of 26 applications at 7 day intervals, and an application with a boom height of 50 ft., 

EFED has found that there are no exceedance of the LOCs for acute, restricted use or endangered 

species for all aquatic animals in the water column. Furthermore, there are no exceedance of the 

LOCs for acute, restricted use or endangered species aquatic invertebrates that dwell in the 

benthos, based on the EqP screening method. However, there are no available plant data at this 

time.

Uncertainties:

There are certain uncertainties regarding this assessment of prallethrin.

• There are no terrestrial or aquatic plant toxicity data for prallethrin. EFED did not assess 

the acute risk to nonendangered or endangered terrestrial or aquatic plants species. EFED 

is uncertain about these risks. 

• There is uncertainty related to the EqP theory used to estimate the risk quotients for benthic 

organisms. It is assumed that the toxicity of the most sensitive invertebrate species is a 

surrogate for the benthic organisms. The EqP theory may not be conservative enough.

• There are no Typical End-use Product (TEP) toxicity data for prallethrin. EFED expects 

the synergist, piperonyl butoxide, used in MULTICIDE® Fogging Concentrate 2798, will 

likely increase the acute aquatic toxicity of prallethrin fivefold or more (R. Lee, per. com., 

5/25/05) compared to the toxicity of prallethrin used alone. EFED is uncertain about the 

increased toxicity that may result from the use of this end-use formulation and how it 

would affect prallethrin’s risk to aquatic organisms which includes endangered aquatic 

species.

• The modeling with AGDISP was done assuming that there is no direct application to any 

bodies of water. According to the instructions in the label, direct applications should not 

occur at any time. However, typically large levels of spray drift may reach adjacent 

bodies of water. Spray drift levels larger than those assumed in the modeling for this 

assessment (that is, 12.5%) will result in increased aquatic organism exposure. This may 

increase the risk to aquatic organisms.
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• The modeling was done with a 7 days interval; however, the label allows a smaller interval 

between application under certain circumstances, which may increase the risk.

• EFED modeled aquatic EECs based on 50 ft. boom height. Labeling statements specify, 

“Applications should be made at an altitude of 50 to 300 feet.” This implies applications 

can be made at a lessor height which would increase potential risk to aquatic organisms.

Background:

The registrant, MGK (McLaughlin Gormley King Company), seeks full registration of prallethrin, for 

the control of adult nuisance insects (e.g., mosquitos, midges, gnats, black flies, etc.) at outdoor 

residential/recreational areas (vegetation surrounding parks, woodlands, swamps, marshes, 

overgrown areas, and golf courses). Prallethrin like other synthetic pyrethroids is a neural toxin 

that alters the normal function of insect nerves by modifying the kinetics of voltage-sensitive 

sodium channels thus effecting nerve action potential.

This is EFED’s third assessment for this proposed registration. In EFED’s initial risk 

assessment (DP Barcodes D239293, D291569, and D257565 dated 10/29/03), EFED conducted a 

refined scenario for the assessment of possible aquatic impact of prallethrin’s proposed use as an 

adulticide to control nuisance insects in outdoor residential/recreational areas. Using modeling 

for the most reasonable, aquatic application to marshes and swamps, EFED found that prallethrin’s 

proposed uses are not likely to result in acute risks to freshwater or estuarine/marine organisms or 

chronic risks to freshwater organisms (no LOCs exceeded). However, applications of prallethin 

to water bodies deeper than typical marshes and swamps (i.e., ≥ 1 foot) such as ponds, would be 

likely to trigger acute endangered species risk to freshwater invertebrates and an acute restricted 

use risks to estuarine/marine invertebrates (LOCs exceeded). Some key EFED assumptions in 

this initial assessment were:

1) Applications would be made at a maximum rate of 0.0020 lb prallethrin/acre;

2) Applications would be made over water bodies;

3) 26 applications would be made every 4 days; and

4) Applications would be made aerially at a height of 25 feet above the spray block.

In a revised risk assessment (DP Barcode D301123 dated 6/10/04), EFED reassessed the risk 

because the registrant withdrew the pending application for registration of RESPONDÉ®

Insecticide, which had a higher application rate (0.002 lb prallethrin/A), and kept only the product 

MULTICIDE® Fogging Concentrate 2798, which has an application rate of 0.0008 lb 

prallethrin/A. The latter product is a combination with other active ingredients (it contains 1.00% 

prallethrin, 5.00% sumithrin, and 5.00% piperonyl butoxide). Again, using modeling for the 

most reasonable typical scenarios, aquatic application to marshes, swamps, and standard pond, 

EFED found that prallethrin’s uses were not likely to result in acute risks to freshwater or 

estuarine/marine organisms (no LOCs exceeded). As in the initial assessment, this refined 

assessment utilized the tools AGDISP, EXAMS, and PRZM/EXAMS to model aerial ULV 

applications and aquatic scenarios of various depths (6 in., 1 ft., 1 m., and 2 m.). Some key EFED 

assumptions in this second assessment were:

1) Applications would be made at a maximum rate of 0.0008 lb prallethrin/acre;
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2) Applications would not be made over water bodies but drift to water bodies would occur;

3) 26 applications would be made every 4 days; and

4) Applications would be made aerially at a height of 25 feet above the spray block.

At this time, resulting in EFED’s third assessment, dealing with a revised label for MULTICIDE®

Fogging Concentrate 2798 (EPA hole-punch date 12-22-04), including restrictions related to the 

boom height (recommended 50-300 ft), and the interval between applications (recommended 7 

days, except under high pressure). Furthermore, the label restricts the aerial uses of the product in 

the state of Florida except under certain circumstances (specifically authorized by the Bureau of 

Entomology, Florida Department of Agriculture and Consumer Services). The registrant also 

addressed some of the outstanding data requirements imposed in a previous actions. Some key 

EFED assumptions in this third assessment were:

1) Applications would be made at a maximum rate of 0.0008 lb prallethrin/acre;

2) Applications would not be made over water bodies but drift to water bodies would occur;

3) 26 applications would be made every 7 days; and

4) Applications would be made aerially at a height of 50 feet above the spray block.

EFED Response:

The LOCs triggered in the original risk assessment were based on applications of 

prallethrin over deeper bodies of water (i.e., ≥ 1 foot). However, applications of prallethrin 

over shallow water bodies such as freshwater and estuarine/ marine marshes or swamps 

suggested low risk to aquatic organisms. Therefore, EFED focused its attention to the 

cases where there were exceedances.

Based on the information provided by the registrant, EFED formulated a new more 

refined scenario. The key points differences from previous scenarios were as follows:

• The input parameters in AGDISP were selected to more closely resemble the application of 

MULTICIDE® 2798 (instead of the use of AGDISP default values). The input 

parameters used in AGDISP modeling appear in Table 3. The summary of the results 

from AGDISP appear in Table 4. The resulting outputs from AGDISP: Numerical 

Values, Input Summary and Aquatic Deposition Assessment, appear in Appendix B of this 

document. The following are the major refinements in the AGDISP modeling:

_The flow rate was closely modeled as per label directions.

_The spray material was “user defined.” The percent active was modeled as per 

label information. The specific gravity was estimated from label information 

although it was found that it resembled that of the AGDISP default for oil.

_A “user defined” droplet size was utilized to further refine the model. The label 

recommendation is Dv0.5 = 30 μ. The smallest user defined droplet size had a Dv0.5

= 47.79 (ASAE Aereosol to Very Fine). With this refinement, a droplet size with 

Dv0.5 = 30.43μ was achieved.

_The estimation of the value of spray drift was refined, based on the AGDISP 
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toolbox “Aquatic Deposition Assessment” (refer to output in Appendix B).

• Under “Use Areas”, the MULTICIDE® 2798 label (EPA hole-punch date 12-22-04) 

states: “For use in mosquito adulticiding programs involving outdoor residential and 

recreational areas where adult mosquitoes are present in annoying number, and in 

vegetation surrounding parks, woodlands, swamps, marshes, overgrown areas and golf 

courses.” Therefore, the modeling approach included application to a field with drift 

towards an adjacent body of water instead of application directly over the body of water. 

The Tier II aquatic models PRZM/EXAMS (as opposed to EXAMS) were used.

• Dealing with the application interval and number of applications allowed, the label states: 

“Retreat as needed after 7 days. More frequent treatments may be made if adult 

mosquitoes have reinfested the treatment area...” For aquatic modeling purposes EFED 

used a 7 day application interval to estimate exposure. Dealing with the number of 

applications allowed or application interval, EFED doesn’t interpret this labeling statement 

as a limit on the number of applications allowed or 7 days as the minimum retreatment 

interval. For aquatic modeling purposes EFED used 26 applications to estimate exposure 

because that is the maximum number of applications allowed by PRZM/EXAMS. In the 

registrant’s (MGK’s) September 30, 2004 letter the registrant states: “Even in Florida, 

where mosquito densities are high and the mosquito season is the longest in the nation, the 

greatest frequency of applications is about twice a month...MGK’s modeling based on 10 

applications is sufficient to cover the worst case scenario.” Given this statement, EFED 

doesn’t understand why MGK fails to specify a maximum of 10 applications per season on 

the label for MULTICIDE® 2798.

• For aerial applications the label states: “Application should be made at an altitude of 50 to 

300 feet.” For aquatic modeling purposes EFED used a 50 foot boom height to estimate 

exposure.

• Since the label included certain limitations of aerial applications in Florida1

, the 

Pennsylvania turf scenario was selected, in lieu of the Florida turf scenario. The input 

parameters used in the modeling for PRZM/EXAMS appear in Table 5. The resulting 

EECs at the four depths, 4 inches, 1 feet, 1 meter and 2 meters, are summarized in Table 6. 

The output files from the PRZM/EXAMS runs appear in Appendix B.

 1 “Prohibition on Aerial Use: Not for aerial application in Florida unless specifically authorized by the Bureau of Entomology, 

Florida Department of Agriculture and Consumer Services.”
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• To evaluate the need for sediment toxicity tests, the “Write benthic pore water 

concentrations” instruction of the graphical user interphase pe4v.1.pl2, was activated. 

Screening level RQs for sediment dwelling organisms were estimated with an 

extrapolation method recommended by the Office of Water (USEPA). The 

method is based on the Agency’s Equilibrium Partitioning Sediment Guidelines (ESG) 

under the Clean Water Act [CWA Section 304(a)(2)]. After consultation with the OW, 

EFED adopted the equilibrium partitioning (EqP) sediment method to be used when 

sediment toxicity and/or exposure data are not available. This extrapolation method is 

useful for estimating potential sediment exposure values, as well as sediment toxicity 

values that can be used in a screening level risk assessment. The EqP theory holds that a 

nonionic chemical in sediment partitions between sediment organic carbon, interstitial 

(pore) water and benthic organisms. At equilibrium, if the concentration in any phase is 

known, then the concentration in the other phases can be predicted through the organic/ 

carbon soil partition coefficient. The EECs are calculated from the pore water 

concentration (an output from PRZM/EXAMS) through the KOC. In the absence of 

sediment toxicity data, the endpoints are extrapolated from the water column 

invertebrate toxicity tests. Further details about the EqP theory appear in 

Appendix A.

• The acute risk for the most sensitive species of water column freshwater and estuarine/ 

marine invertebrates were revised and the results appear in Table 1a. There are no 

exceedances in the levels of concern for any of the depths of the bodies of water. To 

contrast the results, the risk quotients estimated in the previous assessment are summarized 

in Table 1b (note that the peak EEC’s for the new assessment are lower by a factor of 

around 3).

• The screening level acute risk for the freshwater and estuarine/marine benthic dwelling

invertebrates were estimated, based on the EqP theory and are summarized in Table 2. 

There are no exceedances in the levels of concern for any of the depths of the bodies of 

water.

• There are limitations and resulting uncertainty with the RQs listed in Table 2. First, 

EFED is using prallethrin’s toxicity to water column invertebrates (that is, freshwater and 

estuarine/marine invertebrates) to estimate the RQs for benthic dwelling invertebrates in 

this screening level assessment. Second, prallethrin’s anaerobic aquatic metabolism 

half-life is relatively long (37 days). This lengthy half-life may adversely affect benthic 

dwellers and would be better assessed if the toxicity to benthic dwellers were known 

through the whole sediment toxicity testing EFED is requesting for prallethrin. 

 2 http://www.epa.gov/oppefed1/models/water
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Table 1a. Revised Prallethrin’s Acute Risk to Aquatic Invertebrates Based on Water Body 

Depth, Based on Freshwater Invertebrate LC50 (waterflea) of 6,200 ppt, and 

Estuarine/Marine Invertebrate LC50 (mysid shrimp) of 3,900 ppt.

Depth of Water Body Peak EECs (ppt)1,2 Freshwater 

Invertebrate RQs

Estuarine/Marine 

Invertebrate RQs

Exceeds LOC 4

4.0 inches 7.01 0.001 0.002 NO

12.0 inches 7.61 0.001 0.002 NO

3.3 feet 8.12 0.001 0.002 NO

6.6 feet 8.76 0.001 0.002 NO

1 Based on 26 aerial applications applied every 7 days at an effective application rate of 0.0008 lb ai/A.

2 Based on AGDISP-PRZM/EXAMS modeling

3 Risk Presumptions:

 RQ greater or equal to 0.5 exceeds aquatic acute, acute restricted use and acute endangered species LOCs.

 RQ greater or equal to 0.1 exceeds aquatic acute restricted use and acute endangered species LOCs

 RQ greater or equal to 0.05 exceeds aquatic acute endangered species LOCs

 There are currently no estuarine/marine invertebrates listed as endangered species.

Table 1b. FOR INFORMATION ONLY - Prallethrin’s Acute Risk to Aquatic Invertebrates 

Based on Water Body Depth, Based on Freshwater Invertebrate LC50 (waterflea) 

of 6,200 ppt, and Estuarine/Marine Invertebrate LC50 (mysid shrimp) of 3,900 ppt 

(RISK ASSESSMENT DATED JUNE 10, 2004).

Depth of Water Body Peak EECs (ppt)1 Freshwater 

Invertebrate RQs

Estuarine/Marine 

Invertebrate RQs

Exceeds LOC 4

12.0 inches2 20.1 0.003 0.005 NO

3.3 feet2 25.4 0.004 0.007 NO

6.6 feet3 29.2 0.005 0.007 NO

1 Based on 26 aerial applications applied every 4 days at an effective application rate of 0.0008 lb ai/A.

2 Based on AGDISP-EXAMS modeling

3 Based on AGDISP-PRZM/EXAMS modeling

4 Risk Presumptions are the same as in Table 1a.

Table 2. Prallethrin’s Acute Risk Estimation to freshwater and estuarine/marine 

sediment-dwelling organisms based on data from the surrogate species: Freshwater 

Invertebrate LC50 (waterflea) of 6,200 ppt, and Estuarine/Marine Invertebrate LC50 (mysid 

shrimp) of 3,900 ppt. EEC values reflect porewater estimates that are in equilibrium 

with sediment concentrations (KOC of 2,533 L/kg) as generated from PRZM/EXAMS at 

various depths of the body of water for the adulticide use.
−13−

Depth of Water Body Peak EECs (ppt)1,2 Freshwater 

Invertebrate RQs

Estuarine/Marine 

Invertebrate RQs

Exceeds LOC 4

4.0 inches 2.43 <0.000 0.001 NO

12.0 inches 3.14 0.001 0.001 NO

3.3 feet 3.00 0.001 0.001 NO

6.6 feet 2.59 <0.000 0.001 NO

1 Based on 26 aerial applications applied every 7 days at an effective application rate of 0.0008 lb ai/A.

2 Based on AGDISP-PRZM/EXAMS modeling

3 Risk Presumptions are the same as in Table 1a.

Table 3. Input parameters to AGDISP for prallethrin aerial applications.

Parameter Value Reference

Aircraft type Air Tractor AT-401; fixed wing AGDISP Default (USDA 2003)

Swath Width 60 ft AGDISP Default (USDA 2003)

Wing semispan 24.5 ft. AGDISP Default (USDA 2003)

Swath Displacement 0 ft. AGDISP Default (USDA 2003)

propeller rpm 2000; propeller rad. 4.5 ft.; 1 

engine

AGDISP Default (USDA 2003)

Fixed wing 1 engine AGDISP Default (USDA 2003)

Flight lines 20 AGDISP Default (USDA 2003)

Flight speed 120 mph AGDISP Default (USDA 2003)

Boom height 50 ft. Proposed Product Label

Number of nozzles 42 AGDISP Default (USDA 2003)

Vortex decay rate 1.25 mph AGDISP Default (USDA 2003)

Aircraft drag coefficient 0.1 AGDISP Default (USDA 2003)

Propeller efficiency 0.8 AGDISP Default (USDA 2003)

Ambient pressure 29.91 in Hg AGDISP Default (USDA 2003)

Planform area 294 ft2 AGDISP Default (USDA 2003)

Nozzle spacing (even) 9.3 in. AGDISP Default (USDA 2003)

Wind speed 10 mph Product Label Recommendation

Wind direction -90°, Perpendicular to flight path AGDISP Default (USDA 2003)
−14−

Table 3. Input parameters to AGDISP for prallethrin aerial applications.

Parameter Value Reference

Surface roughness 0.0075 AGDISP Default (USDA 2003)

Canopy None Most Conservative Scenario

Stability Overcast AGDISP Default (USDA 2003)

Relative humidity 90% Value typical of mosquito habitat

Temperature 85°F Value typical of mosquito habitat

Droplet type User defined See details below

Dv0.1 10.29 μm AGDISP v. 8.07

Dv0.5 30.43 μm Product Label, AGDISP v. 8.07

Dv0.9 62.29 μm AGDISP v. 8.07

Relative span 1.7 μm Calculated from AGDISP Library

< 141 μm 99.46 % AGDISP v. 8.07

Spray material Oil (user defined ) Product Label

Specific gravity, carrier 0.887 Estimated from Product Label

Specific gravity, nonvolatile 0.887 Estimated from Product Label

Active rate 0.0008 lb a.i./A Product Label

Active Fraction (prallethrin) 0.01 (1.00%) Product Label

Non-volatile Fraction 0.99 Calculated

Spray volume rate 1.24 fl oz/A = 0.00969 gal/A Product Label

Evaporation rate 2.49 μm2/°C/sec Minimum value recommended by 

AGDISP

Downwind water body 

width

208.7 ft Standard ecological pond

The results obtained are summarized in the following Table 4 (in contrast to the default 

values for aerial applications of agricultural crops, of 95% and 5%, respectively).

Table 4. Summary of Results from AGDISP

Application Efficiency 2.47 %
−15−

Table 4. Summary of Results from AGDISP

Spray Drift (to standard pond) 12.5 %

Table 5. Input parameters to PRZM/EXAMS for calculation of EECs of prallethrin 

using results of Application Efficiency and Spray Drift from AGDISP.

Parameter Value Source

Application rate 0.0008 lb a.i./A =

0.0009 Kg a.i./ha

Product Label

Number of applications 26 Recommended by EFED

Minimum interval between 

applications

7 days Recommended by EFED

Application time, method of 

application, PRZM scenario

April 01

Aerial

PA turf scenario.

Recommended by EFED, the PA 

turf scenario because the label 

imposes certain restrictions with 

respect to aerial applications in FL 

(incorporation depth 0.0 in.)

Aerobic soil metabolism 9 days MRID 42838601 (3x’s the available 

value as per EFED guidance)

KOC 2533 L/kg MRID 42810801 (average value as 

per EFED guidance)

Henry’s law constant 1.72x10-3 atm·m3/mol VP/WSOL

Aerobic Aquatic Metabolism 18 days MRID 44861001, 02 (Upperbound 

value, n=2, as per EFED guidance)

Anaerobic Aquatic Metabolism 37 days MRID 44366601, 02 (Upperbound 

value, n=2, as per EFED guidance)

Aqueous photolysis 0.57 days MRID 43797601

Hydrolysis pH 5

pH 7

pH 9

stable

stable

4.9 days

MRID 42838602

Molecular weight 300 g/mol Registrant’s Submissions

Solubility (WSOL) 80.3 ppm 10 x’s the available value of 8.03 

ppm as per EFED Model Input 

Guidance, Version II (2002); 

Product Chemistry Data

Vapor pressure (VP) 3.50x10-5 mm Hg MSDS

PLDKRT (foliage pesticide 0 days EFED Model Input Guidance, 
−16−

Table 5. Input parameters to PRZM/EXAMS for calculation of EECs of prallethrin 

using results of Application Efficiency and Spray Drift from AGDISP.

half-life) Version II (U.S. EPA 2002)

FEXTRC (foliar extraction) 0.5 EFED Model Input Guidance, 

Version II (U.S. EPA 2002)

FILTRA (filtration parameter; 

required if CAM set to 3)

NA --

PLVKRT (pesticide decay rate on 

plant foliage)

0/day EFED Model Input Guidance, 

Version II (U.S. EPA 2002)

IPSCND( condition for disposition 

of foliar pesticide after harvest)

3 PRZM Version 3.0 User’s Manual 

(Carsel 1998) 

CAM (chemical application 

method)

2 PRZM Version 3.0 User’s Manual 

(Carsel 1998) 

UPTKF (plant uptake factor) 0 EFED Model Input Guidance, 

Version II (U.S. EPA 2002)

DAIR (diffusion coefficient for 

pesticide in the air)

0 PRZM Version 3.0 User’s Manual 

(Carsel 1998) 

ENPY(enthalpy of vaporization of 

pesticide)

Not Specified --

Application Efficiency 0.0247 (fraction) AGDISP v. 8.07 output

Drift 0.125 (fraction) AGDISP v. 8.07 output

POND SCENARIOS

Scenario Depth of Pond Layer (PL) CHARLa (m)

1 0.0278 m (0.333 ft) 0.0528

2 0.3048 m (1 ft) 0.177

3 1 m (3.3 ft) 0.525

4 (Standard Pond) 2 m (6.6 ft) 1.025

a Characteristic Length = 0.5 (Pond Layer) + 0.5 (Benthic Layer) = A measure of pond depth. To edit EXAMS 

commands: set charl(1) to “x”; set dep(1) to “x”; where “x” is the corresponding value listed in the pond depth 

scenarios table.

Table 6. Surface water EECs (ppb or g/L) ecological risk assessment for ponds of 

various depths based on prallethrin use on turfa. 7-Day application interval. 

Average Depth Peak Value 21 Day Value 60 Day Value

4 in. = 0.333 ft. 0.00701 0.00234 0.00230
−17−

12 in. = 1 ft. 0.00761 0.00356 0.00346

3.3 ft. = 1 m. 0.00812 0.00459 0.00440

6.6 ft. = 2 m. 0.00876 0.00533 0.00511 a

Based on 1-in-10 year exceedance probability (0.10).

Table 7. Pore Water EECs (ppb or g/L) ecological risk assessment for ponds of 

various depths based on prallethrin use on turfa. 7-Day application interval. 

Average Depth Peak Value 21 Day Value 60 Day Value

4 in. = 0.333 ft. 0.00243 0.00212 0.00204

12 in. = 1 ft. 0.00314 0.00297 0.00285

3.3 ft. = 1 m. 0.00300 0.00293 0.00276

6.6 ft. = 2 m. 0.00259 0.00252 0.00240

a

Based on 1-in-10 year exceedance probability (0.10).
−18−

Appendix A. Equilibrium Partitioning Model and Risk Estimation 

for Benthic Organisms

Equilibrium Partitioning

Under the Clean Water Act (CWA Section 304(a)(2) the Environmental Protection Agency (EPA) 

and the States are expected to develop programs for protecting the chemical, physical, and 

biological integrity of the nation’s waters. In order to meet the objectives of the CWA, EPA has 

periodically issued ambient water quality criteria (WQC). However, toxic contaminants in bottom 

sediments of lakes, rivers, wetlands, and coastal waters create potential for environmental 

degradation even if water column contamination values are low and comply with EPAs water 

quality criteria. In order to evaluate this possible concern the USEPA Office of Water (OW) also 

calculates Equilibrium Partitioning Sediment Guidelines (ESG). 

Pesticide compounds that bind readily to particulate and organic carbon in the water column can 

eventually settle onto the benthos. This increase in particulate-bound-pesticides can result in an 

accumulation of compounds in or on the sediment that may have the potential for toxic impact to 

benthic and epibenthic aquatic organisms (e.g., early life stage of many invertebrates and fish, as 

well as crabs and shrimp). However, evaluating the risk to aquatic life from this exposure becomes 

problematic especially if there is a lack of adequate sediment toxicity and exposure data. 

Therefore, in order to assess this potential for pesticide risk to aquatic benthic systems, the 

Environmental Fate and Effects Division (EFED) of the Office of Pesticides Program (OPP) has 

adopted the method used by the OW that relies on equilibrium partitioning (EqP) of chemicals. 

The EqP theory is based on the hydrophobicity and concentrations of the chemical normalized to 

organic carbon (OC) in sediment (De Toro et al. 1991) and holds that a nonionic chemical in 

sediment partitions between sediment organic carbon, interstitial (pore) water and benthic 

organisms. At equilibrium, if the concentration in any phase is known, then the concentration in 

the other phases can be predicted. A key component to this theory is the chemicals organic carbon 

coefficient (Koc), which is constant for every chemical and represents the ratio of the chemical 

concentration in water to the concentration in organic carbon. The document, “ Technical Basis for 

the Derivation of Equilibrium Partitioning Sediment Guidelines (ESGs) for the Protection of 

Benthic Organisms: Nonionic Organics” (USEPA, 2000a), demonstrates that biological responses 

of benthic organisms to nonionic organic chemicals in sediments are different when the sediment 

concentrations are expressed on a dry weight basis, but similar when expressed on a ug chemical/g 

organic carbon basis (ug/goc). Similar responses were also observed across sediments when 

interstitial water concentrations were used to normalize biological availability. The Technical 

Basis Document further demonstrates that if the toxic effect concentration in water is known (e.g., 

LC50), the effect concentration in sediment on a ug/goc basis can be predicted by multiplying the 

effect concentration in water by the chemical Koc..

 (LC50 ug/L x Koc L/kgoc x 1 kgoc/1000goc = LC50 ug/goc)

Since, EFED uses a deterministic method for its screening level risk assessment, the calculation of 
−19−

risk quotient values (RQ) is important for assessing possible risk. The RQ values are calculated by 

taking the ratio of the estimated exposure concentrations (EEC) to the toxicity effect value (e.g., 

LC50, NOAEC). The EEC values are model generated (e.g., GENEEC, PRZM/EXAMS) and 

reflect peer evaluated and approved scenarios for assessing pesticide exposure to an aquatic 

environment. However, the PRZM/EXAMS output produces water column EEC values, as well as 

sediment and porewater EEC values. Therefore, in order to assess possible toxic pesticide 

exposure to aquatic organisms from sediments, EFED is using the PRZM/EXAMS model which 

incorporates the principles of the equilibrium partitioning theory, in order to generate EECs from 

sediment and porewater. By relying on sediment and/or porewater output values, EFED has two 

ways for calculating RQ values for sediments by using porewater exposure values and bulk 

sediment values. 

The calculations that rely on porewater can be calculated by dividing the PRZM/EXAMS output 

value for porewater concentrations by the dissolved concentrations in the water column that 

caused toxicity in bioassays (e.g., LC50).

 EEC porewater ug/L / LC50 ugL

If sediment effects data are available (LC50 ug/kgoc), RQ can be produced by using the 

PRZM/EXAMS sediment output value for sediment. 

EEC sediment ug/ugoc / LC50 ug/kgoc

Assumptions of the equilibrium partitioning model

Three principle observations that underlie the equilibrium partitioning (EqP) approach:

1) The concentrations of nonionic organic chemicals in sediments (expressed on an organic 

carbon basis) and in interstitial waters correlate with observed biological effects on 

sediment-dwelling organisms across a range of sediments. 

2) Partitioning models can relate sediment concentrations for nonionic organic chemicals 

on an organic carbon basis to freely-dissolved concentrations in interstitial water.

3) The distribution of sensitivities of benthic organisms is similar to that of water column 

species.

The EqP approach assumes that:

1) The partitioning of a chemical between sediment organic carbon and interstitial water is 

at or near equilibrium.

2) The concentration in either phase can be predictive using appropriate partition 

coefficient and the measured concentration in the other phase.
−20−

3) Organisms receive equivalent exposure from water-only exposures or from any 

equilibrated phase (interstitial water via respiration; from sediment via ingestion or other 

sediment integument exchange).

4) For nonionic compounds, effect concentrations in sediments on an organic carbon basis 

can be predicted using the organic carbon partition coefficient (Koc) and effects 

concentrations in the water.
−21−

Appendix B. Output Files from AGDISP and PRZM/EXAMS

AGDISP Numerical Values:

AGDISP Numerical Values

Drop Size Distribution:

Initial DSD

Dv0.1 10.29 = um

Dv0.5 30.43 = um

Dv0.9 62.29 = um

Relative Span: 1.71

< 141 = um: 99.46 %

Accountancy of Active:

Application Efficiency: 2.47 %

Downwind Deposition: 27.23 %

Airborne Drift: 70.29 %

Carrier Evaporated: 0.9945 %

RunID:

 AGDISP Prall Revised Label.ag 8.08 03-25-2005 09:28:33

Input Summary:

AGDISP Input Data Summary

--General--

Title: Prallethrin Label Revision

Notes: 

Calculations Done: Yes

Run ID: AGDISP Prall Revised Label.ag 8.08 03-25-2005 09:28:33

--Aircraft-- ----------------------------

Name Air Tractor AT-401

Type Library

Boom Height (ft) 50

Flight Lines 20

Optimize Flight Lines No

Flight Line Reps # Reps

 1 1

2 1

3 1

4 1

5 1

 6 1

 7 1

8 1

 9 1

 10 1

11 1

 12 1

 13 1

14 1
−22−

 15 1

16 1

17 1

18 1

19 1

20 1

Wing Type Fixed-Wing

Semispan (ft) 24.5

Typical Speed (mph) 119.99

Biplane Separation (ft) 0

Weight (lbs) 6000

Planform Area (ft▓) 294

Propeller RPM 2000

Propeller Radius (ft) 4.5

Engine Vert Distance (ft) -1.2

Engine Fwd Distance (ft) 11.9

--Aerial Application Type-- ----------------------------

Aerial Application Type Liquid

--Drop Size Distribution-- ----------------------------

Name ASAE Fine to Medium

Type User-defined

Drop Categories # Diam (um) Frac

 1 1.03 0.0019

2 1.48 0.0024

3 1.99 0.0030

4 2.57 0.0038

 5 3.23 0.0049

 6 3.99 0.0062

7 4.85 0.0080

 8 5.84 0.0103

 9 6.97 0.0132

 10 8.25 0.0168

11 9.72 0.0213

12 11.39 0.0267

13 13.30 0.0333

 14 15.48 0.0409

 15 17.97 0.0497

16 20.81 0.0593

 17 24.05 0.0692

 18 27.75 0.0783

19 31.97 0.0843

20 36.79 0.0885

21 42.29 0.0870

22 48.57 0.0801

23 55.74 0.0687

24 63.91 0.0541

25 73.25 0.0382

26 83.90 0.0236

27 96.06 0.0124

28 109.94 0.0056

29 125.79 0.0021

 30 143.87 0.0010

--Nozzle Distribution-- ----------------------------

Boom Length (%) 65.06

Nozzle Locations # Hor(ft) Ver(ft) Fwd(ft)

 1 -15.94 0 0
−23−

 2 -15.16 0 0

3 -14.38 0 0

4 -13.61 0 0

5 -12.83 0 0

 6 -12.05 0 0

 7 -11.27 0 0

8 -10.5 0 0

 9 -9.72 0 0

 10 -8.94 0 0

11 -8.16 0 0

 12 -7.39 0 0

 13 -6.61 0 0

14 -5.83 0 0

15 -5.05 0 0

 16 -4.28 0 0

17 -3.5 0 0

18 -2.72 0 0

 19 -1.94 0 0

20 -1.17 0 0

21 -0.3888 0 0

 22 0.3888 0 0

 23 1.17 0 0

24 1.94 0 0

 25 2.72 0 0

 26 3.5 0 0

27 4.28 0 0

28 5.05 0 0

29 5.83 0 0

30 6.61 0 0

 31 7.39 0 0

 32 8.16 0 0

33 8.94 0 0

 34 9.72 0 0

 35 10.5 0 0

36 11.27 0 0

37 12.05 0 0

38 12.83 0 0

39 13.61 0 0

40 14.38 0 0

41 15.16 0 0

42 15.94 0 0

--Swath-- ----------------------------

Swath Width 60 ft

Swath Displacement 0 ft

--Spray Material-- ----------------------------

Name Oil

Type User-defined

Nonvolatile Fraction 0.99

Active Fraction 0.01

Spray Volume Rate (gal/ac) 0.0097

Specific Gravity 0.887

Evaporation Rate (╡m▓/deg C/sec) 2.49

--Meteorology-- ----------------------------

Wind Speed (mph) 10

Wind Direction (deg) -90

Temperature (deg F) 85
−24−

Relative Humidity (%) 90

--Atmospheric Stability-- ----------------------------

Atmospheric Stability Overcast

--Transport-- ----------------------------

Flux Plane Distance (ft) 0

--Canopy-- ----------------------------

Type None

--Terrain-- ----------------------------

Surface Roughness (ft) 0.0246

Upslope Angle (deg) 0

Sideslope Angle (deg) 0

--Advanced-- ----------------------------

Wind Speed Height (ft) 6.56

Max Compute Time (sec) 600

Max Downwind Dist (ft) 2608.24

Vortex Decay Rate (IGE) (mph) 1.25

Vortex Decay Rate (OGE) (mph) 0.3355

Aircraft Drag Coeff 0.1

Propeller Efficiency 0.8

Ambient Pressure (in hg) 29.91

Save Trajectory Files No

Half Boom No

Aquatic Deposition Assessment

Level of Spray Drift = 

(Initial Average Deposition to the Downwind Water Body * 100%)/Prallethrin Application Rate = 

(0.0001 lb a.i./A x 100) / 0.0008 lb a.i./A = 12.5%

PRZM/EXAMS Output Files
−25−

4 inch pond depth

Water column

stored as Prallethrin.out

Chemical: Prallethrin

PRZM environment: PAturfC.txt modified Satday, 12 October 2002 at 17:27:02

EXAMS environment: pond298.exv modified Thuday, 29 August 2002 at 16:33:30

Metfile: w14737.dvf modified Wedday, 3 July 2002 at 09:06:12

Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly

1961 0.006976 0.00292 0.00232 0.00228 0.002194 0.001071

1962 0.006896 0.002838 0.002227 0.002182 0.002125 0.001082

1963 0.006862 0.002792 0.002195 0.002182 0.002111 0.001063

1964 0.00689 0.002847 0.002185 0.002151 0.002102 0.001055

1965 0.006871 0.002827 0.002207 0.002151 0.002087 0.001064

1966 0.006987 0.002962 0.00234 0.002296 0.002171 0.001067

1967 0.006998 0.002949 0.002334 0.002246 0.002185 0.001097

1968 0.007026 0.003001 0.002373 0.002326 0.002222 0.001075

1969 0.006884 0.002789 0.002185 0.002182 0.002125 0.001067

1970 0.006859 0.002784 0.002196 0.00221 0.002153 0.001062

1971 0.006937 0.00288 0.002271 0.002214 0.002125 0.001071

1972 0.00694 0.002873 0.002277 0.002287 0.002223 0.001095

1973 0.007036 0.003005 0.002382 0.0023 0.002187 0.001066

1974 0.006947 0.002898 0.002291 0.002245 0.00217 0.001099

1975 0.00701 0.002936 0.002292 0.002245 0.002173 0.001096

1976 0.006885 0.002819 0.002215 0.002178 0.002115 0.001058

1977 0.006905 0.002858 0.002248 0.002168 0.0021 0.001064

1978 0.006929 0.002871 0.00227 0.002211 0.002127 0.001078

1979 0.006949 0.002893 0.002293 0.002282 0.002228 0.001098

1980 0.006837 0.00276 0.002175 0.002166 0.002079 0.001019

1981 0.006918 0.002869 0.002253 0.002161 0.002082 0.00107

1982 0.006894 0.002822 0.002232 0.002208 0.002123 0.001066

1983 0.006945 0.002881 0.00229 0.002247 0.002134 0.00103

1984 0.006972 0.002925 0.002312 0.002255 0.002155 0.001069

1985 0.006779 0.002691 0.002111 0.002145 0.002093 0.001052

1986 0.006888 0.002828 0.002227 0.00217 0.002097 0.001055

1987 0.006879 0.002829 0.002204 0.002174 0.002088 0.001062

1988 0.006952 0.002873 0.002276 0.002212 0.002102 0.001038

1989 0.006959 0.002905 0.002303 0.002278 0.0022 0.001091

1990 0.006931 0.002887 0.002276 0.002238 0.002146 0.001064

Sorted results

Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly

0.032258064516129 0.007036 0.003005 0.002382 0.002326 0.002228

0.001099

0.0645161290322581 0.007026 0.003001 0.002373 0.0023 0.002223

0.001098

0.0967741935483871 0.00701 0.002962 0.00234 0.002296 0.002222 0.001097

0.129032258064516 0.006998 0.002949 0.002334 0.002287 0.0022

0.001096

0.161290322580645 0.006987 0.002936 0.00232 0.002282 0.002194

0.001095

0.193548387096774 0.006976 0.002925 0.002312 0.00228 0.002187

0.001091

0.225806451612903 0.006972 0.00292 0.002303 0.002278 0.002185
−26−

0.001082

0.258064516129032 0.006959 0.002905 0.002293 0.002255 0.002173

0.001078

0.290322580645161 0.006952 0.002898 0.002292 0.002247 0.002171

0.001075

0.32258064516129 0.006949 0.002893 0.002291 0.002246 0.00217

0.001071

0.354838709677419 0.006947 0.002887 0.00229 0.002245 0.002155

0.001071

0.387096774193548 0.006945 0.002881 0.002277 0.002245 0.002153

0.00107

0.419354838709677 0.00694 0.00288 0.002276 0.002238 0.002146 0.001069

0.451612903225806 0.006937 0.002873 0.002276 0.002214 0.002134

0.001067

0.483870967741936 0.006931 0.002873 0.002271 0.002212 0.002127

0.001067

0.516129032258065 0.006929 0.002871 0.00227 0.002211 0.002125

0.001066

0.548387096774194 0.006918 0.002869 0.002253 0.00221 0.002125

0.001066

0.580645161290323 0.006905 0.002858 0.002248 0.002208 0.002125

0.001064

0.612903225806452 0.006896 0.002847 0.002232 0.002182 0.002123

0.001064

0.645161290322581 0.006894 0.002838 0.002227 0.002182 0.002115

0.001064

0.67741935483871 0.00689 0.002829 0.002227 0.002182 0.002111

0.001063

0.709677419354839 0.006888 0.002828 0.002215 0.002178 0.002102

0.001062

0.741935483870968 0.006885 0.002827 0.002207 0.002174 0.002102

0.001062

0.774193548387097 0.006884 0.002822 0.002204 0.00217 0.0021 0.001058

0.806451612903226 0.006879 0.002819 0.002196 0.002168 0.002097

0.001055

0.838709677419355 0.006871 0.002792 0.002195 0.002166 0.002093

0.001055

0.870967741935484 0.006862 0.002789 0.002185 0.002161 0.002088

0.001052

0.903225806451613 0.006859 0.002784 0.002185 0.002151 0.002087

0.001038

0.935483870967742 0.006837 0.00276 0.002175 0.002151 0.002082 0.00103

0.967741935483871 0.006779 0.002691 0.002111 0.002145 0.002079

0.001019

0.1 0.0070088 0.0029607 0.0023394 0.0022951 0.0022198 0.0010969

Average of yearly averages: 0.00106813333333333

Inputs generated by pe4.pl - 8-August-2003

Data used for this run:

Output File: Prallethrin

Metfile: w14737.dvf

PRZM scenario: PAturfC.txt

EXAMS environment file: pond298.exv

Chemical Name: Prallethrin

Description Variable Name Value Units Comments

Molecular weight mwt 300 g/mol

Henry's Law Const. henry 1.72e-3 atm-m^3/mol
−27−

Vapor Pressure vapr 3.50e-5 torr

Solubility sol 80.3 mg/L

Kd Kd mg/L

Koc Koc 2533 mg/L

Photolysis half-life kdp 0.57 days Half-life

Aerobic Aquatic Metabolism kbacw 18 days Halfife

Anaerobic Aquatic Metabolism kbacs 37 days Halfife

Aerobic Soil Metabolism asm 9 days Halfife

Hydrolysis: pH 5 0 days Half-life

Hydrolysis: pH 7 0 days Half-life

Hydrolysis: pH 9 4.9 days Half-life

Method: CAM 2 integer See PRZM manual

Incorporation Depth: DEPI 0.0 cm

Application Rate: TAPP 0.0009 kg/ha

Application Efficiency: APPEFF0.025 fraction

Spray Drift DRFT 0.125 fraction of application rate applied to pond

Application Date Date 01-04 dd/mm or dd/mmm or dd-mm or dd-mmm

Interval 1 interval 7 days Set to 0 or delete line for single app.

Interval 2 interval 7 days Set to 0 or delete line for single app.

Interval 3 interval 7 days Set to 0 or delete line for single app.

Interval 4 interval 7 days Set to 0 or delete line for single app.

Interval 5 interval 7 days Set to 0 or delete line for single app.

Interval 6 interval 7 days Set to 0 or delete line for single app.

Interval 7 interval 7 days Set to 0 or delete line for single app.

Interval 8 interval 7 days Set to 0 or delete line for single app.

Interval 9 interval 7 days Set to 0 or delete line for single app.

Interval 10 interval 7 days Set to 0 or delete line for single app.

Interval 11 interval 7 days Set to 0 or delete line for single app.

Interval 12 interval 7 days Set to 0 or delete line for single app.

Interval 13 interval 7 days Set to 0 or delete line for single app.

Interval 14 interval 7 days Set to 0 or delete line for single app.

Interval 15 interval 7 days Set to 0 or delete line for single app.

Interval 16 interval 7 days Set to 0 or delete line for single app.

Interval 17 interval 7 days Set to 0 or delete line for single app.

Interval 18 interval 7 days Set to 0 or delete line for single app.

Interval 19 interval 7 days Set to 0 or delete line for single app.

Interval 20 interval 7 days Set to 0 or delete line for single app.

Interval 21 interval 7 days Set to 0 or delete line for single app.

Interval 22 interval 7 days Set to 0 or delete line for single app.

Interval 23 interval 7 days Set to 0 or delete line for single app.

Interval 24 interval 7 days Set to 0 or delete line for single app.

Interval 25 interval 7 days Set to 0 or delete line for single app.

Record 17: FILTRA

IPSCND 3

UPTKF 0

Record 18: PLVKRT0

PLDKRT0

FEXTRC 0.5

Flag for Index Res. Run IR Pond

Flag for runoff calc. RUNOFF total none, monthly or total(average of entire run)

Pore water

stored as Prallethrinben.out

Chemical: Prallethrin

PRZM environment: PAturfC.txt modified Satday, 12 October 2002 at 17:27:02

EXAMS environment: pond298.exv modified Thuday, 29 August 2002 at 16:33:30
−28−

Metfile: w14737.dvf modified Wedday, 3 July 2002 at 09:06:12

Benthic segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly

1961 0.002395 0.002249 0.002099 0.002025 0.001957 0.0009558

1962 0.002303 0.00216 0.001989 0.001922 0.001884 0.0009678

1963 0.002265 0.002121 0.001961 0.001925 0.001875 0.0009506

1964 0.002316 0.002159 0.001963 0.001898 0.001867 0.0009416

1965 0.002295 0.00214 0.001961 0.001898 0.001854 0.0009503

1966 0.00241 0.002264 0.002122 0.002045 0.001936 0.0009524

1967 0.002427 0.002283 0.002116 0.001995 0.001946 0.0009846

1968 0.002455 0.002315 0.002146 0.002069 0.001984 0.0009603

1969 0.002239 0.00209 0.001929 0.001904 0.001879 0.0009529

1970 0.002262 0.002116 0.001974 0.001953 0.001914 0.0009477

1971 0.002355 0.00221 0.002048 0.001958 0.001889 0.0009567

1972 0.002333 0.002184 0.002034 0.002025 0.001982 0.0009797

1973 0.002469 0.002324 0.002154 0.002041 0.001949 0.0009501

1974 0.002356 0.002211 0.002048 0.001988 0.001933 0.0009845

1975 0.002376 0.002231 0.002044 0.001979 0.001929 0.0009799

1976 0.002293 0.002149 0.00199 0.001917 0.001873 0.0009437

1977 0.002302 0.002158 0.001995 0.001882 0.001839 0.0009475

1978 0.002339 0.002194 0.00204 0.001953 0.001887 0.000963

1979 0.002359 0.002212 0.002062 0.00202 0.001983 0.0009816

1980 0.002233 0.002087 0.001948 0.001909 0.001841 0.0009019

1981 0.002324 0.002179 0.002006 0.001905 0.001844 0.000955

1982 0.002284 0.002137 0.001993 0.001947 0.001883 0.0009532

1983 0.00236 0.002213 0.002071 0.001996 0.001897 0.0009152

1984 0.002378 0.002241 0.002087 0.002001 0.001917 0.0009538

1985 0.002163 0.002017 0.001882 0.001887 0.001855 0.0009368

1986 0.002288 0.002143 0.001987 0.001895 0.001842 0.0009405

1987 0.002285 0.002137 0.001983 0.001921 0.001849 0.0009466

1988 0.002342 0.002195 0.002047 0.00196 0.001865 0.0009237

1989 0.002374 0.002229 0.002075 0.002016 0.001957 0.0009755

1990 0.002346 0.002206 0.002051 0.00198 0.00191 0.0009502

Sorted results

Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly

0.032258064516129 0.002469 0.002324 0.002154 0.002069 0.001984

0.0009846

0.0645161290322581 0.002455 0.002315 0.002146 0.002045 0.001983

0.0009845

0.0967741935483871 0.002427 0.002283 0.002122 0.002041 0.001982

0.0009816

0.129032258064516 0.00241 0.002264 0.002116 0.002025 0.001957

0.0009799

0.161290322580645 0.002395 0.002249 0.002099 0.002025 0.001957

0.0009797

0.193548387096774 0.002378 0.002241 0.002087 0.00202 0.001949

0.0009755

0.225806451612903 0.002376 0.002231 0.002075 0.002016 0.001946

0.0009678

0.258064516129032 0.002374 0.002229 0.002071 0.002001 0.001936

0.000963

0.290322580645161 0.00236 0.002213 0.002062 0.001996 0.001933

0.0009603

0.32258064516129 0.002359 0.002212 0.002051 0.001995 0.001929

0.0009567

0.354838709677419 0.002356 0.002211 0.002048 0.001988 0.001917

0.0009558
−29−

0.387096774193548 0.002355 0.00221 0.002048 0.00198 0.001914 0.000955

0.419354838709677 0.002346 0.002206 0.002047 0.001979 0.00191

0.0009538

0.451612903225806 0.002342 0.002195 0.002044 0.00196 0.001897

0.0009532

0.483870967741936 0.002339 0.002194 0.00204 0.001958 0.001889

0.0009529

0.516129032258065 0.002333 0.002184 0.002034 0.001953 0.001887

0.0009524

0.548387096774194 0.002324 0.002179 0.002006 0.001953 0.001884

0.0009506

0.580645161290323 0.002316 0.00216 0.001995 0.001947 0.001883

0.0009503

0.612903225806452 0.002303 0.002159 0.001993 0.001925 0.001879

0.0009502

0.645161290322581 0.002302 0.002158 0.00199 0.001922 0.001875

0.0009501

0.67741935483871 0.002295 0.002149 0.001989 0.001921 0.001873

0.0009477

0.709677419354839 0.002293 0.002143 0.001987 0.001917 0.001867

0.0009475

0.741935483870968 0.002288 0.00214 0.001983 0.001909 0.001865

0.0009466

0.774193548387097 0.002285 0.002137 0.001974 0.001905 0.001855

0.0009437

0.806451612903226 0.002284 0.002137 0.001963 0.001904 0.001854

0.0009416

0.838709677419355 0.002265 0.002121 0.001961 0.001898 0.001849

0.0009405

0.870967741935484 0.002262 0.002116 0.001961 0.001898 0.001844

0.0009368

0.903225806451613 0.002239 0.00209 0.001948 0.001895 0.001842

0.0009237

0.935483870967742 0.002233 0.002087 0.001929 0.001887 0.001841

0.0009152

0.967741935483871 0.002163 0.002017 0.001882 0.001882 0.001839

0.0009019

0.1 0.0024253 0.0022811 0.0021214 0.0020394 0.0019795 0.00098143

Average of yearly averages: 0.000953436666666667

Inputs generated by pe4.pl - 8-August-2003

Data used for this run:

Output File: Prallethrin

Metfile: w14737.dvf

PRZM scenario: PAturfC.txt

EXAMS environment file: pond298.exv

Chemical Name: Prallethrin

Description Variable Name Value Units Comments

Molecular weight mwt 300 g/mol

Henry's Law Const. henry 1.72e-3 atm-m^3/mol

Vapor Pressure vapr 3.50e-5 torr

Solubility sol 80.3 mg/L

Kd Kd mg/L

Koc Koc 2533 mg/L

Photolysis half-life kdp 0.57 days Half-life

Aerobic Aquatic Metabolism kbacw 18 days Halfife

Anaerobic Aquatic Metabolism kbacs 37 days Halfife
−30−

Aerobic Soil Metabolism asm 9 days Halfife

Hydrolysis: pH 5 0 days Half-life

Hydrolysis: pH 7 0 days Half-life

Hydrolysis: pH 9 4.9 days Half-life

Method: CAM 2 integer See PRZM manual

Incorporation Depth: DEPI 0.0 cm

Application Rate: TAPP 0.0009 kg/ha

Application Efficiency: APPEFF0.025 fraction

Spray Drift DRFT 0.125 fraction of application rate applied to pond

Application Date Date 01-04 dd/mm or dd/mmm or dd-mm or dd-mmm

Interval 1 interval 7 days Set to 0 or delete line for single app.

Interval 2 interval 7 days Set to 0 or delete line for single app.

Interval 3 interval 7 days Set to 0 or delete line for single app.

Interval 4 interval 7 days Set to 0 or delete line for single app.

Interval 5 interval 7 days Set to 0 or delete line for single app.

Interval 6 interval 7 days Set to 0 or delete line for single app.

Interval 7 interval 7 days Set to 0 or delete line for single app.

Interval 8 interval 7 days Set to 0 or delete line for single app.

Interval 9 interval 7 days Set to 0 or delete line for single app.

Interval 10 interval 7 days Set to 0 or delete line for single app.

Interval 11 interval 7 days Set to 0 or delete line for single app.

Interval 12 interval 7 days Set to 0 or delete line for single app.

Interval 13 interval 7 days Set to 0 or delete line for single app.

Interval 14 interval 7 days Set to 0 or delete line for single app.

Interval 15 interval 7 days Set to 0 or delete line for single app.

Interval 16 interval 7 days Set to 0 or delete line for single app.

Interval 17 interval 7 days Set to 0 or delete line for single app.

Interval 18 interval 7 days Set to 0 or delete line for single app.

Interval 19 interval 7 days Set to 0 or delete line for single app.

Interval 20 interval 7 days Set to 0 or delete line for single app.

Interval 21 interval 7 days Set to 0 or delete line for single app.

Interval 22 interval 7 days Set to 0 or delete line for single app.

Interval 23 interval 7 days Set to 0 or delete line for single app.

Interval 24 interval 7 days Set to 0 or delete line for single app.

Interval 25 interval 7 days Set to 0 or delete line for single app.

Record 17: FILTRA

IPSCND 3

UPTKF 0

Record 18: PLVKRT0

PLDKRT0

FEXTRC 0.5

Flag for Index Res. Run IR Pond

Flag for runoff calc. RUNOFF total none, monthly or total(average of entire run)

1 foot depth

Water column

stored as Prallethrin.out

Chemical: Prallethrin

PRZM environment: PAturfC.txt modified Satday, 12 October 2002 at 17:27:02

EXAMS environment: pond298.exv modified Thuday, 29 August 2002 at 16:33:30

Metfile: w14737.dvf modified Wedday, 3 July 2002 at 09:06:12

Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly
−31−

1961 0.007541 0.004468 0.003483 0.003435 0.003343 0.001705

1962 0.007608 0.004555 0.003566 0.003386 0.003309 0.00179

1963 0.007583 0.004517 0.003546 0.003405 0.003294 0.001783

1964 0.007356 0.004265 0.003296 0.003337 0.00327 0.00174

1965 0.007506 0.004434 0.003464 0.003341 0.003262 0.001726

1966 0.007573 0.004495 0.003515 0.003436 0.003274 0.001707

1967 0.00759 0.004532 0.003525 0.003421 0.00335 0.001785

1968 0.007658 0.004631 0.003619 0.003573 0.003423 0.001761

1969 0.007479 0.004392 0.003428 0.003362 0.00332 0.001765

1970 0.00743 0.004316 0.00337 0.003388 0.003295 0.001738

1971 0.007529 0.004464 0.003469 0.003409 0.003285 0.001735

1972 0.007503 0.004361 0.00343 0.003458 0.003353 0.001746

1973 0.007573 0.004532 0.003517 0.003412 0.003265 0.001688

1974 0.007607 0.00455 0.003572 0.003442 0.00333 0.001765

1975 0.007613 0.00454 0.003514 0.003389 0.003296 0.001726

1976 0.00748 0.004347 0.003389 0.00328 0.003194 0.001689

1977 0.007451 0.004371 0.003406 0.003309 0.003211 0.00172

1978 0.0075 0.004416 0.003454 0.003386 0.003288 0.001765

1979 0.007545 0.004476 0.003502 0.003504 0.003423 0.001754

1980 0.007364 0.004257 0.003295 0.003284 0.003164 0.001623

1981 0.00751 0.004435 0.00346 0.003289 0.003172 0.001723

1982 0.007532 0.004453 0.003491 0.003391 0.003304 0.001744

1983 0.007505 0.004426 0.003444 0.003389 0.00325 0.001659

1984 0.007506 0.004455 0.003453 0.003361 0.003253 0.001713

1985 0.007318 0.004174 0.003269 0.003276 0.003203 0.001689

1986 0.007486 0.0044 0.003438 0.00333 0.003222 0.001705

1987 0.007545 0.004414 0.003467 0.003324 0.003219 0.001712

1988 0.00753 0.004456 0.003476 0.003354 0.003208 0.001677

1989 0.007488 0.004403 0.003431 0.003409 0.003313 0.001738

1990 0.007453 0.004387 0.003393 0.003339 0.003212 0.001676

Sorted results

Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly

0.032258064516129 0.007658 0.004631 0.003619 0.003573 0.003423

0.00179

0.0645161290322581 0.007613 0.004555 0.003572 0.003504 0.003423

0.001785

0.0967741935483871 0.007608 0.00455 0.003566 0.003458 0.003353

0.001783

0.129032258064516 0.007607 0.00454 0.003546 0.003442 0.00335 0.001765

0.161290322580645 0.00759 0.004532 0.003525 0.003436 0.003343

0.001765

0.193548387096774 0.007583 0.004532 0.003517 0.003435 0.00333

0.001765

0.225806451612903 0.007573 0.004517 0.003515 0.003421 0.00332

0.001761

0.258064516129032 0.007573 0.004495 0.003514 0.003412 0.003313

0.001754

0.290322580645161 0.007545 0.004476 0.003502 0.003409 0.003309

0.001746

0.32258064516129 0.007545 0.004468 0.003491 0.003409 0.003304

0.001744

0.354838709677419 0.007541 0.004464 0.003483 0.003405 0.003296

0.00174

0.387096774193548 0.007532 0.004456 0.003476 0.003391 0.003295

0.001738

0.419354838709677 0.00753 0.004455 0.003469 0.003389 0.003294

0.001738

0.451612903225806 0.007529 0.004453 0.003467 0.003389 0.003288
−32−

0.001735

0.483870967741936 0.00751 0.004435 0.003464 0.003388 0.003285

0.001726

0.516129032258065 0.007506 0.004434 0.00346 0.003386 0.003274

0.001726

0.548387096774194 0.007506 0.004426 0.003454 0.003386 0.00327

0.001723

0.580645161290323 0.007505 0.004416 0.003453 0.003362 0.003265

0.00172

0.612903225806452 0.007503 0.004414 0.003444 0.003361 0.003262

0.001713

0.645161290322581 0.0075 0.004403 0.003438 0.003354 0.003253

0.001712

0.67741935483871 0.007488 0.0044 0.003431 0.003341 0.00325 0.001707

0.709677419354839 0.007486 0.004392 0.00343 0.003339 0.003222

0.001705

0.741935483870968 0.00748 0.004387 0.003428 0.003337 0.003219

0.001705

0.774193548387097 0.007479 0.004371 0.003406 0.00333 0.003212

0.001689

0.806451612903226 0.007453 0.004361 0.003393 0.003324 0.003211

0.001689

0.838709677419355 0.007451 0.004347 0.003389 0.003309 0.003208

0.001688

0.870967741935484 0.00743 0.004316 0.00337 0.003289 0.003203 0.001677

0.903225806451613 0.007364 0.004265 0.003296 0.003284 0.003194

0.001676

0.935483870967742 0.007356 0.004257 0.003295 0.00328 0.003172

0.001659

0.967741935483871 0.007318 0.004174 0.003269 0.003276 0.003164

0.001623

0.1 0.0076079 0.004549 0.003564 0.0034564 0.0033527 0.0017812

Average of yearly averages: 0.0017249

Inputs generated by pe4.pl - 8-August-2003

Data used for this run:

Output File: Prallethrin

Metfile: w14737.dvf

PRZM scenario: PAturfC.txt

EXAMS environment file: pond298.exv

Chemical Name: Prallethrin

Description Variable Name Value Units Comments

Molecular weight mwt 300 g/mol

Henry's Law Const. henry 1.72e-3 atm-m^3/mol

Vapor Pressure vapr 3.50e-5 torr

Solubility sol 80.3 mg/L

Kd Kd mg/L

Koc Koc 2533 mg/L

Photolysis half-life kdp 0.57 days Half-life

Aerobic Aquatic Metabolism kbacw 18 days Halfife

Anaerobic Aquatic Metabolism kbacs 37 days Halfife

Aerobic Soil Metabolism asm 9 days Halfife

Hydrolysis: pH 5 0 days Half-life

Hydrolysis: pH 7 0 days Half-life

Hydrolysis: pH 9 4.9 days Half-life

Method: CAM 2 integer See PRZM manual

Incorporation Depth: DEPI 0.0 cm
−33−

Application Rate: TAPP 0.0009 kg/ha

Application Efficiency: APPEFF0.025 fraction

Spray Drift DRFT 0.125 fraction of application rate applied to pond

Application Date Date 01-04 dd/mm or dd/mmm or dd-mm or dd-mmm

Interval 1 interval 7 days Set to 0 or delete line for single app.

Interval 2 interval 7 days Set to 0 or delete line for single app.

Interval 3 interval 7 days Set to 0 or delete line for single app.

Interval 4 interval 7 days Set to 0 or delete line for single app.

Interval 5 interval 7 days Set to 0 or delete line for single app.

Interval 6 interval 7 days Set to 0 or delete line for single app.

Interval 7 interval 7 days Set to 0 or delete line for single app.

Interval 8 interval 7 days Set to 0 or delete line for single app.

Interval 9 interval 7 days Set to 0 or delete line for single app.

Interval 10 interval 7 days Set to 0 or delete line for single app.

Interval 11 interval 7 days Set to 0 or delete line for single app.

Interval 12 interval 7 days Set to 0 or delete line for single app.

Interval 13 interval 7 days Set to 0 or delete line for single app.

Interval 14 interval 7 days Set to 0 or delete line for single app.

Interval 15 interval 7 days Set to 0 or delete line for single app.

Interval 16 interval 7 days Set to 0 or delete line for single app.

Interval 17 interval 7 days Set to 0 or delete line for single app.

Interval 18 interval 7 days Set to 0 or delete line for single app.

Interval 19 interval 7 days Set to 0 or delete line for single app.

Interval 20 interval 7 days Set to 0 or delete line for single app.

Interval 21 interval 7 days Set to 0 or delete line for single app.

Interval 22 interval 7 days Set to 0 or delete line for single app.

Interval 23 interval 7 days Set to 0 or delete line for single app.

Interval 24 interval 7 days Set to 0 or delete line for single app.

Interval 25 interval 7 days Set to 0 or delete line for single app.

Record 17: FILTRA

IPSCND 3

UPTKF 0

Record 18: PLVKRT0

PLDKRT0

FEXTRC 0.5

Flag for Index Res. Run IR Pond

Flag for runoff calc. RUNOFF total none, monthly or total(average of entire run)

Pore water

stored as Prallethrinben.out

Chemical: Prallethrin

PRZM environment: PAturfC.txt modified Satday, 12 October 2002 at 17:27:02

EXAMS environment: pond298.exv modified Thuday, 29 August 2002 at 16:33:30

Metfile: w14737.dvf modified Wedday, 3 July 2002 at 09:06:12

Benthic segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly

1961 0.00309 0.00305 0.002935 0.002828 0.00276 0.001425

1962 0.003133 0.003093 0.002938 0.002744 0.002705 0.001519

1963 0.003117 0.003077 0.00293 0.002788 0.002711 0.001517

1964 0.002876 0.002837 0.002752 0.00273 0.002687 0.001477

1965 0.002996 0.002956 0.002824 0.002688 0.002649 0.001459

1966 0.003142 0.003102 0.002976 0.002831 0.0027 0.00144

1967 0.003157 0.003117 0.00298 0.002824 0.002775 0.00153

1968 0.003204 0.003159 0.003058 0.002953 0.002838 0.001486

1969 0.002997 0.002957 0.002827 0.002716 0.002707 0.001494
−34−

1970 0.002955 0.00291 0.002826 0.002781 0.002716 0.001469

1971 0.003068 0.003028 0.00291 0.002794 0.00271 0.001471

1972 0.003014 0.002971 0.002886 0.002847 0.002767 0.00148

1973 0.003122 0.003082 0.00295 0.0028 0.002684 0.00142

1974 0.003122 0.003082 0.002941 0.002831 0.002744 0.001498

1975 0.003085 0.003044 0.002887 0.00275 0.002693 0.001457

1976 0.002958 0.002918 0.002783 0.002651 0.002601 0.001425

1977 0.002937 0.002897 0.002772 0.002619 0.002575 0.001445

1978 0.003015 0.002976 0.00285 0.002739 0.002676 0.001495

1979 0.003057 0.003012 0.002923 0.002868 0.002815 0.001482

1980 0.002873 0.002834 0.00274 0.002675 0.002582 0.001346

1981 0.003019 0.002979 0.002836 0.002656 0.002576 0.001454

1982 0.003046 0.003006 0.002883 0.002757 0.002709 0.001488

1983 0.003046 0.003007 0.00289 0.002778 0.002667 0.001387

1984 0.003063 0.003022 0.002895 0.00275 0.00267 0.001444

1985 0.00283 0.002789 0.002708 0.002673 0.002628 0.001418

1986 0.002999 0.002959 0.002833 0.002674 0.002604 0.001443

1987 0.003006 0.002967 0.002839 0.002664 0.002593 0.001443

1988 0.003049 0.003009 0.002887 0.002747 0.002629 0.001408

1989 0.003027 0.002987 0.002879 0.002793 0.002729 0.00147

1990 0.002999 0.002959 0.002844 0.002737 0.002642 0.001418

Sorted results

Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly

0.032258064516129 0.003204 0.003159 0.003058 0.002953 0.002838

0.00153

0.0645161290322581 0.003157 0.003117 0.00298 0.002868 0.002815

0.001519

0.0967741935483871 0.003142 0.003102 0.002976 0.002847 0.002775

0.001517

0.129032258064516 0.003133 0.003093 0.00295 0.002831 0.002767

0.001498

0.161290322580645 0.003122 0.003082 0.002941 0.002831 0.00276

0.001495

0.193548387096774 0.003122 0.003082 0.002938 0.002828 0.002744

0.001494

0.225806451612903 0.003117 0.003077 0.002935 0.002824 0.002729

0.001488

0.258064516129032 0.00309 0.00305 0.00293 0.0028 0.002716 0.001486

0.290322580645161 0.003085 0.003044 0.002923 0.002794 0.002711

0.001482

0.32258064516129 0.003068 0.003028 0.00291 0.002793 0.00271 0.00148

0.354838709677419 0.003063 0.003022 0.002895 0.002788 0.002709

0.001477

0.387096774193548 0.003057 0.003012 0.00289 0.002781 0.002707

0.001471

0.419354838709677 0.003049 0.003009 0.002887 0.002778 0.002705

0.00147

0.451612903225806 0.003046 0.003007 0.002887 0.002757 0.0027

0.001469

0.483870967741936 0.003046 0.003006 0.002886 0.00275 0.002693

0.001459

0.516129032258065 0.003027 0.002987 0.002883 0.00275 0.002687

0.001457

0.548387096774194 0.003019 0.002979 0.002879 0.002747 0.002684

0.001454

0.580645161290323 0.003015 0.002976 0.00285 0.002744 0.002676

0.001445

0.612903225806452 0.003014 0.002971 0.002844 0.002739 0.00267
−35−

0.001444

0.645161290322581 0.003006 0.002967 0.002839 0.002737 0.002667

0.001443

0.67741935483871 0.002999 0.002959 0.002836 0.00273 0.002649

0.001443

0.709677419354839 0.002999 0.002959 0.002833 0.002716 0.002642

0.00144

0.741935483870968 0.002997 0.002957 0.002827 0.002688 0.002629

0.001425

0.774193548387097 0.002996 0.002956 0.002826 0.002675 0.002628

0.001425

0.806451612903226 0.002958 0.002918 0.002824 0.002674 0.002604

0.00142

0.838709677419355 0.002955 0.00291 0.002783 0.002673 0.002601

0.001418

0.870967741935484 0.002937 0.002897 0.002772 0.002664 0.002593

0.001418

0.903225806451613 0.002876 0.002837 0.002752 0.002656 0.002582

0.001408

0.935483870967742 0.002873 0.002834 0.00274 0.002651 0.002576

0.001387

0.967741935483871 0.00283 0.002789 0.002708 0.002619 0.002575

0.001346

0.1 0.0031411 0.0031011 0.0029734 0.0028454 0.0027742 0.0015151

Average of yearly averages: 0.00145693333333333

Inputs generated by pe4.pl - 8-August-2003

Data used for this run:

Output File: Prallethrin

Metfile: w14737.dvf

PRZM scenario: PAturfC.txt

EXAMS environment file: pond298.exv

Chemical Name: Prallethrin

Description Variable Name Value Units Comments

Molecular weight mwt 300 g/mol

Henry's Law Const. henry 1.72e-3 atm-m^3/mol

Vapor Pressure vapr 3.50e-5 torr

Solubility sol 80.3 mg/L

Kd Kd mg/L

Koc Koc 2533 mg/L

Photolysis half-life kdp 0.57 days Half-life

Aerobic Aquatic Metabolism kbacw 18 days Halfife

Anaerobic Aquatic Metabolism kbacs 37 days Halfife

Aerobic Soil Metabolism asm 9 days Halfife

Hydrolysis: pH 5 0 days Half-life

Hydrolysis: pH 7 0 days Half-life

Hydrolysis: pH 9 4.9 days Half-life

Method: CAM 2 integer See PRZM manual

Incorporation Depth: DEPI 0.0 cm

Application Rate: TAPP 0.0009 kg/ha

Application Efficiency: APPEFF0.025 fraction

Spray Drift DRFT 0.125 fraction of application rate applied to pond

Application Date Date 01-04 dd/mm or dd/mmm or dd-mm or dd-mmm

Interval 1 interval 7 days Set to 0 or delete line for single app.

Interval 2 interval 7 days Set to 0 or delete line for single app.

Interval 3 interval 7 days Set to 0 or delete line for single app.

Interval 4 interval 7 days Set to 0 or delete line for single app.

Interval 5 interval 7 days Set to 0 or delete line for single app.
−36−

Interval 6 interval 7 days Set to 0 or delete line for single app.

Interval 7 interval 7 days Set to 0 or delete line for single app.

Interval 8 interval 7 days Set to 0 or delete line for single app.

Interval 9 interval 7 days Set to 0 or delete line for single app.

Interval 10 interval 7 days Set to 0 or delete line for single app.

Interval 11 interval 7 days Set to 0 or delete line for single app.

Interval 12 interval 7 days Set to 0 or delete line for single app.

Interval 13 interval 7 days Set to 0 or delete line for single app.

Interval 14 interval 7 days Set to 0 or delete line for single app.

Interval 15 interval 7 days Set to 0 or delete line for single app.

Interval 16 interval 7 days Set to 0 or delete line for single app.

Interval 17 interval 7 days Set to 0 or delete line for single app.

Interval 18 interval 7 days Set to 0 or delete line for single app.

Interval 19 interval 7 days Set to 0 or delete line for single app.

Interval 20 interval 7 days Set to 0 or delete line for single app.

Interval 21 interval 7 days Set to 0 or delete line for single app.

Interval 22 interval 7 days Set to 0 or delete line for single app.

Interval 23 interval 7 days Set to 0 or delete line for single app.

Interval 24 interval 7 days Set to 0 or delete line for single app.

Interval 25 interval 7 days Set to 0 or delete line for single app.

Record 17: FILTRA

IPSCND 3

UPTKF 0

Record 18: PLVKRT0

PLDKRT0

FEXTRC 0.5

Flag for Index Res. Run IR Pond

Flag for runoff calc. RUNOFF total none, monthly or total(average of entire run)

1 meter depth

Water column

stored as Prallethrin.out

Chemical: Prallethrin

PRZM environment: PAturfC.txt modified Satday, 12 October 2002 at 17:27:02

EXAMS environment: pond298.exv modified Thuday, 29 August 2002 at 16:33:30

Metfile: w14737.dvf modified Wedday, 3 July 2002 at 09:06:12

Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly

1961 0.007878 0.005465 0.00432 0.004281 0.0042 0.002193

1962 0.008198 0.005821 0.00467 0.004371 0.004257 0.002364

1963 0.008182 0.005794 0.004663 0.004392 0.00427 0.002377

1964 0.007917 0.005546 0.004308 0.004294 0.004219 0.002304

1965 0.00802 0.005614 0.004485 0.004288 0.004189 0.002268

1966 0.00794 0.005527 0.004384 0.004342 0.004169 0.002224

1967 0.007979 0.005583 0.00442 0.004353 0.004259 0.002322

1968 0.008093 0.005739 0.004566 0.004495 0.004346 0.002328

1969 0.008044 0.005637 0.004508 0.004358 0.004268 0.00233

1970 0.007793 0.005345 0.004228 0.004261 0.004164 0.002284

1971 0.007943 0.005544 0.00439 0.004302 0.004167 0.002257

1972 0.007874 0.005512 0.0043 0.004331 0.004231 0.002258

1973 0.007913 0.005527 0.004356 0.004227 0.004079 0.002183

1974 0.00812 0.005726 0.004594 0.0044 0.004248 0.002289

1975 0.008058 0.005658 0.004469 0.004265 0.004177 0.002218

1976 0.007958 0.005503 0.004376 0.004205 0.004067 0.002182

1977 0.007849 0.005418 0.004301 0.004205 0.004076 0.002241
−37−

1978 0.008046 0.00564 0.004513 0.004376 0.004235 0.002314

1979 0.007971 0.005564 0.004422 0.004415 0.004332 0.002281

1980 0.007709 0.005263 0.004138 0.004143 0.004024 0.002116

1981 0.007949 0.005528 0.004401 0.004198 0.004035 0.002229

1982 0.008039 0.005626 0.004505 0.004368 0.004236 0.002275

1983 0.007859 0.005443 0.004302 0.004274 0.00413 0.002169

1984 0.007927 0.005509 0.004376 0.004235 0.004099 0.00222

1985 0.007738 0.005279 0.004226 0.004153 0.004079 0.002193

1986 0.007922 0.005494 0.004374 0.004228 0.00409 0.002218

1987 0.008072 0.005605 0.00449 0.004283 0.004146 0.002239

1988 0.007963 0.005547 0.004407 0.004267 0.004088 0.002198

1989 0.00785 0.005384 0.004265 0.004253 0.004152 0.002246

1990 0.007903 0.005477 0.004348 0.004162 0.004026 0.00215

Sorted results

Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly

0.032258064516129 0.008198 0.005821 0.00467 0.004495 0.004346

0.002377

0.0645161290322581 0.008182 0.005794 0.004663 0.004415 0.004332

0.002364

0.0967741935483871 0.00812 0.005739 0.004594 0.0044 0.00427 0.00233

0.129032258064516 0.008093 0.005726 0.004566 0.004392 0.004268

0.002328

0.161290322580645 0.008072 0.005658 0.004513 0.004376 0.004259

0.002322

0.193548387096774 0.008058 0.00564 0.004508 0.004371 0.004257

0.002314

0.225806451612903 0.008046 0.005637 0.004505 0.004368 0.004248

0.002304

0.258064516129032 0.008044 0.005626 0.00449 0.004358 0.004236

0.002289

0.290322580645161 0.008039 0.005614 0.004485 0.004353 0.004235

0.002284

0.32258064516129 0.00802 0.005605 0.004469 0.004342 0.004231

0.002281

0.354838709677419 0.007979 0.005583 0.004422 0.004331 0.004219

0.002275

0.387096774193548 0.007971 0.005564 0.00442 0.004302 0.0042 0.002268

0.419354838709677 0.007963 0.005547 0.004407 0.004294 0.004189

0.002258

0.451612903225806 0.007958 0.005546 0.004401 0.004288 0.004177

0.002257

0.483870967741936 0.007949 0.005544 0.00439 0.004283 0.004169

0.002246

0.516129032258065 0.007943 0.005528 0.004384 0.004281 0.004167

0.002241

0.548387096774194 0.00794 0.005527 0.004376 0.004274 0.004164

0.002239

0.580645161290323 0.007927 0.005527 0.004376 0.004267 0.004152

0.002229

0.612903225806452 0.007922 0.005512 0.004374 0.004265 0.004146

0.002224

0.645161290322581 0.007917 0.005509 0.004356 0.004261 0.00413 0.00222

0.67741935483871 0.007913 0.005503 0.004348 0.004253 0.004099

0.002218

0.709677419354839 0.007903 0.005494 0.00432 0.004235 0.00409 0.002218

0.741935483870968 0.007878 0.005477 0.004308 0.004228 0.004088

0.002198

0.774193548387097 0.007874 0.005465 0.004302 0.004227 0.004079
−38−

0.002193

0.806451612903226 0.007859 0.005443 0.004301 0.004205 0.004079

0.002193

0.838709677419355 0.00785 0.005418 0.0043 0.004205 0.004076 0.002183

0.870967741935484 0.007849 0.005384 0.004265 0.004198 0.004067

0.002182

0.903225806451613 0.007793 0.005345 0.004228 0.004162 0.004035

0.002169

0.935483870967742 0.007738 0.005279 0.004226 0.004153 0.004026

0.00215

0.967741935483871 0.007709 0.005263 0.004138 0.004143 0.004024

0.002116

0.1 0.0081173 0.0057377 0.0045912 0.0043992 0.0042698 0.0023298

Average of yearly averages: 0.002249

Inputs generated by pe4.pl - 8-August-2003

Data used for this run:

Output File: Prallethrin

Metfile: w14737.dvf

PRZM scenario: PAturfC.txt

EXAMS environment file: pond298.exv

Chemical Name: Prallethrin

Description Variable Name Value Units Comments

Molecular weight mwt 300 g/mol

Henry's Law Const. henry 1.72e-3 atm-m^3/mol

Vapor Pressure vapr 3.50e-5 torr

Solubility sol 80.3 mg/L

Kd Kd mg/L

Koc Koc 2533 mg/L

Photolysis half-life kdp 0.57 days Half-life

Aerobic Aquatic Metabolism kbacw 18 days Halfife

Anaerobic Aquatic Metabolism kbacs 37 days Halfife

Aerobic Soil Metabolism asm 9 days Halfife

Hydrolysis: pH 5 0 days Half-life

Hydrolysis: pH 7 0 days Half-life

Hydrolysis: pH 9 4.9 days Half-life

Method: CAM 2 integer See PRZM manual

Incorporation Depth: DEPI 0.0 cm

Application Rate: TAPP 0.0009 kg/ha

Application Efficiency: APPEFF0.025 fraction

Spray Drift DRFT 0.125 fraction of application rate applied to pond

Application Date Date 01-04 dd/mm or dd/mmm or dd-mm or dd-mmm

Interval 1 interval 7 days Set to 0 or delete line for single app.

Interval 2 interval 7 days Set to 0 or delete line for single app.

Interval 3 interval 7 days Set to 0 or delete line for single app.

Interval 4 interval 7 days Set to 0 or delete line for single app.

Interval 5 interval 7 days Set to 0 or delete line for single app.

Interval 6 interval 7 days Set to 0 or delete line for single app.

Interval 7 interval 7 days Set to 0 or delete line for single app.

Interval 8 interval 7 days Set to 0 or delete line for single app.

Interval 9 interval 7 days Set to 0 or delete line for single app.

Interval 10 interval 7 days Set to 0 or delete line for single app.

Interval 11 interval 7 days Set to 0 or delete line for single app.

Interval 12 interval 7 days Set to 0 or delete line for single app.

Interval 13 interval 7 days Set to 0 or delete line for single app.

Interval 14 interval 7 days Set to 0 or delete line for single app.

Interval 15 interval 7 days Set to 0 or delete line for single app.
−39−

Interval 16 interval 7 days Set to 0 or delete line for single app.

Interval 17 interval 7 days Set to 0 or delete line for single app.

Interval 18 interval 7 days Set to 0 or delete line for single app.

Interval 19 interval 7 days Set to 0 or delete line for single app.

Interval 20 interval 7 days Set to 0 or delete line for single app.

Interval 21 interval 7 days Set to 0 or delete line for single app.

Interval 22 interval 7 days Set to 0 or delete line for single app.

Interval 23 interval 7 days Set to 0 or delete line for single app.

Interval 24 interval 7 days Set to 0 or delete line for single app.

Interval 25 interval 7 days Set to 0 or delete line for single app.

Record 17: FILTRA

IPSCND 3

UPTKF 0

Record 18: PLVKRT0

PLDKRT0

FEXTRC 0.5

Flag for Index Res. Run IR Pond

Flag for runoff calc. RUNOFF total none, monthly or total(average of entire run)

Pore water

stored as Prallethrinben.out

Chemical: Prallethrin

PRZM environment: PAturfC.txt modified Satday, 12 October 2002 at 17:27:02

EXAMS environment: pond298.exv modified Thuday, 29 August 2002 at 16:33:30

Metfile: w14737.dvf modified Wedday, 3 July 2002 at 09:06:12

Benthic segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly

1961 0.002798 0.002781 0.002739 0.002683 0.002637 0.001448

1962 0.003069 0.003056 0.002942 0.002745 0.002697 0.001649

1963 0.003074 0.003061 0.00295 0.002748 0.002689 0.001672

1964 0.002804 0.002788 0.002735 0.002672 0.002638 0.001618

1965 0.002884 0.002869 0.002782 0.002646 0.002617 0.001571

1966 0.002885 0.00287 0.002812 0.002692 0.002575 0.001534

1967 0.002995 0.002978 0.002905 0.002778 0.002724 0.001661

1968 0.002985 0.002968 0.00293 0.002851 0.002755 0.001606

1969 0.002955 0.002941 0.002849 0.002707 0.002672 0.001623

1970 0.002781 0.002765 0.002731 0.002683 0.002624 0.001586

1971 0.002827 0.002811 0.002762 0.002688 0.002631 0.00157

1972 0.002833 0.002817 0.00278 0.002723 0.002652 0.001572

1973 0.002803 0.002786 0.002731 0.002622 0.002536 0.001495

1974 0.003005 0.002992 0.002892 0.002713 0.002667 0.001596

1975 0.002936 0.002924 0.002814 0.002637 0.002604 0.001532

1976 0.002855 0.002841 0.002747 0.00259 0.00253 0.001503

1977 0.002758 0.002742 0.002664 0.002527 0.002481 0.001539

1978 0.002937 0.002923 0.00283 0.002668 0.002618 0.001609

1979 0.00285 0.002834 0.002802 0.002766 0.002718 0.001577

1980 0.002647 0.002631 0.002601 0.002539 0.002453 0.001407

1981 0.00287 0.002856 0.002759 0.002577 0.002496 0.001535

1982 0.002973 0.002957 0.002877 0.002737 0.002684 0.001611

1983 0.002767 0.002751 0.00271 0.002635 0.002545 0.001466

1984 0.002824 0.002812 0.002706 0.002595 0.00254 0.001528

1985 0.002729 0.002718 0.002653 0.002561 0.00255 0.001495

1986 0.002865 0.00285 0.002765 0.00261 0.002538 0.001545

1987 0.002895 0.00288 0.00279 0.002614 0.002539 0.001544

1988 0.002796 0.00278 0.002726 0.00262 0.002509 0.001503
−40−

1989 0.002792 0.002775 0.002703 0.002648 0.002606 0.001557

1990 0.002825 0.002812 0.002712 0.002572 0.002502 0.001492

Sorted results

Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly

0.032258064516129 0.003074 0.003061 0.00295 0.002851 0.002755

0.001672

0.0645161290322581 0.003069 0.003056 0.002942 0.002778 0.002724

0.001661

0.0967741935483871 0.003005 0.002992 0.00293 0.002766 0.002718

0.001649

0.129032258064516 0.002995 0.002978 0.002905 0.002748 0.002697

0.001623

0.161290322580645 0.002985 0.002968 0.002892 0.002745 0.002689

0.001618

0.193548387096774 0.002973 0.002957 0.002877 0.002737 0.002684

0.001611

0.225806451612903 0.002955 0.002941 0.002849 0.002723 0.002672

0.001609

0.258064516129032 0.002937 0.002924 0.00283 0.002713 0.002667

0.001606

0.290322580645161 0.002936 0.002923 0.002814 0.002707 0.002652

0.001596

0.32258064516129 0.002895 0.00288 0.002812 0.002692 0.002638

0.001586

0.354838709677419 0.002885 0.00287 0.002802 0.002688 0.002637

0.001577

0.387096774193548 0.002884 0.002869 0.00279 0.002683 0.002631

0.001572

0.419354838709677 0.00287 0.002856 0.002782 0.002683 0.002624

0.001571

0.451612903225806 0.002865 0.00285 0.00278 0.002672 0.002618 0.00157

0.483870967741936 0.002855 0.002841 0.002765 0.002668 0.002617

0.001557

0.516129032258065 0.00285 0.002834 0.002762 0.002648 0.002606

0.001545

0.548387096774194 0.002833 0.002817 0.002759 0.002646 0.002604

0.001544

0.580645161290323 0.002827 0.002812 0.002747 0.002637 0.002575

0.001539

0.612903225806452 0.002825 0.002812 0.002739 0.002635 0.00255

0.001535

0.645161290322581 0.002824 0.002811 0.002735 0.002622 0.002545

0.001534

0.67741935483871 0.002804 0.002788 0.002731 0.00262 0.00254 0.001532

0.709677419354839 0.002803 0.002786 0.002731 0.002614 0.002539

0.001528

0.741935483870968 0.002798 0.002781 0.002726 0.00261 0.002538

0.001503

0.774193548387097 0.002796 0.00278 0.002712 0.002595 0.002536

0.001503

0.806451612903226 0.002792 0.002775 0.00271 0.00259 0.00253 0.001495

0.838709677419355 0.002781 0.002765 0.002706 0.002577 0.002509

0.001495

0.870967741935484 0.002767 0.002751 0.002703 0.002572 0.002502

0.001492

0.903225806451613 0.002758 0.002742 0.002664 0.002561 0.002496

0.001466

0.935483870967742 0.002729 0.002718 0.002653 0.002539 0.002481
−41−

0.001448

0.967741935483871 0.002647 0.002631 0.002601 0.002527 0.002453

0.001407

0.1 0.003004 0.0029906 0.0029275 0.0027642 0.0027159 0.0016464

Average of yearly averages: 0.0015548

Inputs generated by pe4.pl - 8-August-2003

Data used for this run:

Output File: Prallethrin

Metfile: w14737.dvf

PRZM scenario: PAturfC.txt

EXAMS environment file: pond298.exv

Chemical Name: Prallethrin

Description Variable Name Value Units Comments

Molecular weight mwt 300 g/mol

Henry's Law Const. henry 1.72e-3 atm-m^3/mol

Vapor Pressure vapr 3.50e-5 torr

Solubility sol 80.3 mg/L

Kd Kd mg/L

Koc Koc 2533 mg/L

Photolysis half-life kdp 0.57 days Half-life

Aerobic Aquatic Metabolism kbacw 18 days Halfife

Anaerobic Aquatic Metabolism kbacs 37 days Halfife

Aerobic Soil Metabolism asm 9 days Halfife

Hydrolysis: pH 5 0 days Half-life

Hydrolysis: pH 7 0 days Half-life

Hydrolysis: pH 9 4.9 days Half-life

Method: CAM 2 integer See PRZM manual

Incorporation Depth: DEPI 0.0 cm

Application Rate: TAPP 0.0009 kg/ha

Application Efficiency: APPEFF0.025 fraction

Spray Drift DRFT 0.125 fraction of application rate applied to pond

Application Date Date 01-04 dd/mm or dd/mmm or dd-mm or dd-mmm

Interval 1 interval 7 days Set to 0 or delete line for single app.

Interval 2 interval 7 days Set to 0 or delete line for single app.

Interval 3 interval 7 days Set to 0 or delete line for single app.

Interval 4 interval 7 days Set to 0 or delete line for single app.

Interval 5 interval 7 days Set to 0 or delete line for single app.

Interval 6 interval 7 days Set to 0 or delete line for single app.

Interval 7 interval 7 days Set to 0 or delete line for single app.

Interval 8 interval 7 days Set to 0 or delete line for single app.

Interval 9 interval 7 days Set to 0 or delete line for single app.

Interval 10 interval 7 days Set to 0 or delete line for single app.

Interval 11 interval 7 days Set to 0 or delete line for single app.

Interval 12 interval 7 days Set to 0 or delete line for single app.

Interval 13 interval 7 days Set to 0 or delete line for single app.

Interval 14 interval 7 days Set to 0 or delete line for single app.

Interval 15 interval 7 days Set to 0 or delete line for single app.

Interval 16 interval 7 days Set to 0 or delete line for single app.

Interval 17 interval 7 days Set to 0 or delete line for single app.

Interval 18 interval 7 days Set to 0 or delete line for single app.

Interval 19 interval 7 days Set to 0 or delete line for single app.

Interval 20 interval 7 days Set to 0 or delete line for single app.

Interval 21 interval 7 days Set to 0 or delete line for single app.

Interval 22 interval 7 days Set to 0 or delete line for single app.

Interval 23 interval 7 days Set to 0 or delete line for single app.

Interval 24 interval 7 days Set to 0 or delete line for single app.
−42−

Interval 25 interval 7 days Set to 0 or delete line for single app.

Record 17: FILTRA

IPSCND 3

UPTKF 0

Record 18: PLVKRT0

PLDKRT0

FEXTRC 0.5

Flag for Index Res. Run IR Pond

Flag for runoff calc. RUNOFF total none, monthly or total(average of entire run)

2 meters pond depth (standard pond)

Water column

stored as Prallethrin.out

Chemical: Prallethrin

PRZM environment: PAturfC.txt modified Satday, 12 October 2002 at 17:27:02

EXAMS environment: pond298.exv modified Thuday, 29 August 2002 at 16:33:30

Metfile: w14737.dvf modified Wedday, 3 July 2002 at 09:06:12

Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly

1961 0.008355 0.006144 0.00498 0.004975 0.004846 0.002509

1962 0.008826 0.006662 0.005464 0.005043 0.004906 0.002711

1963 0.008821 0.006647 0.005472 0.005093 0.004943 0.002735

1964 0.008768 0.006585 0.005313 0.005098 0.004971 0.002652

1965 0.008622 0.006424 0.005206 0.004966 0.004844 0.002611

1966 0.008592 0.006422 0.005183 0.00511 0.004882 0.002538

1967 0.008502 0.006307 0.005126 0.004989 0.004871 0.002643

1968 0.008668 0.006515 0.005326 0.005263 0.005084 0.002687

1969 0.008644 0.006454 0.005282 0.005051 0.004921 0.002672

1970 0.008371 0.006174 0.004959 0.004962 0.004843 0.002611

1971 0.008489 0.006294 0.005118 0.004983 0.004826 0.002579

1972 0.008728 0.006553 0.005285 0.005113 0.004939 0.002579

1973 0.008396 0.006211 0.005021 0.004888 0.004705 0.002491

1974 0.008678 0.006492 0.005323 0.005061 0.004868 0.002618

1975 0.008551 0.006363 0.005133 0.004873 0.004775 0.002527

1976 0.008476 0.006241 0.005071 0.004839 0.004658 0.002482

1977 0.008301 0.006073 0.004923 0.004814 0.004662 0.002551

1978 0.008641 0.006451 0.005282 0.005063 0.004886 0.002651

1979 0.008522 0.006348 0.005154 0.00517 0.005045 0.002614

1980 0.008298 0.006093 0.004877 0.004858 0.004702 0.002424

1981 0.008436 0.00622 0.005057 0.004849 0.004668 0.002533

1982 0.008574 0.006371 0.005211 0.005033 0.004869 0.002592

1983 0.00836 0.006147 0.004984 0.004964 0.004821 0.002489

1984 0.008501 0.006299 0.005122 0.004973 0.004764 0.002538

1985 0.008223 0.005981 0.004892 0.004769 0.004675 0.002505

1986 0.008404 0.006183 0.005027 0.004837 0.004675 0.002527

1987 0.008605 0.006369 0.005219 0.004946 0.004782 0.002569

1988 0.008542 0.00632 0.005151 0.005047 0.004793 0.00252

1989 0.008528 0.006339 0.005095 0.004987 0.004818 0.002556

1990 0.008425 0.006211 0.005041 0.004865 0.004675 0.002449

Sorted results

Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly

0.032258064516129 0.008826 0.006662 0.005472 0.005263 0.005084
−43−

0.002735

0.0645161290322581 0.008821 0.006647 0.005464 0.00517 0.005045

0.002711

0.0967741935483871 0.008768 0.006585 0.005326 0.005113 0.004971

0.002687

0.129032258064516 0.008728 0.006553 0.005323 0.00511 0.004943

0.002672

0.161290322580645 0.008678 0.006515 0.005313 0.005098 0.004939

0.002652

0.193548387096774 0.008668 0.006492 0.005285 0.005093 0.004921

0.002651

0.225806451612903 0.008644 0.006454 0.005282 0.005063 0.004906

0.002643

0.258064516129032 0.008641 0.006451 0.005282 0.005061 0.004886

0.002618

0.290322580645161 0.008622 0.006424 0.005219 0.005051 0.004882

0.002614

0.32258064516129 0.008605 0.006422 0.005211 0.005047 0.004871

0.002611

0.354838709677419 0.008592 0.006371 0.005206 0.005043 0.004869

0.002611

0.387096774193548 0.008574 0.006369 0.005183 0.005033 0.004868

0.002592

0.419354838709677 0.008551 0.006363 0.005154 0.004989 0.004846

0.002579

0.451612903225806 0.008542 0.006348 0.005151 0.004987 0.004844

0.002579

0.483870967741936 0.008528 0.006339 0.005133 0.004983 0.004843

0.002569

0.516129032258065 0.008522 0.00632 0.005126 0.004975 0.004826

0.002556

0.548387096774194 0.008502 0.006307 0.005122 0.004973 0.004821

0.002551

0.580645161290323 0.008501 0.006299 0.005118 0.004966 0.004818

0.002538

0.612903225806452 0.008489 0.006294 0.005095 0.004964 0.004793

0.002538

0.645161290322581 0.008476 0.006241 0.005071 0.004962 0.004782

0.002533

0.67741935483871 0.008436 0.00622 0.005057 0.004946 0.004775

0.002527

0.709677419354839 0.008425 0.006211 0.005041 0.004888 0.004764

0.002527

0.741935483870968 0.008404 0.006211 0.005027 0.004873 0.004705

0.00252

0.774193548387097 0.008396 0.006183 0.005021 0.004865 0.004702

0.002509

0.806451612903226 0.008371 0.006174 0.004984 0.004858 0.004675

0.002505

0.838709677419355 0.00836 0.006147 0.00498 0.004849 0.004675 0.002491

0.870967741935484 0.008355 0.006144 0.004959 0.004839 0.004675

0.002489

0.903225806451613 0.008301 0.006093 0.004923 0.004837 0.004668

0.002482

0.935483870967742 0.008298 0.006073 0.004892 0.004814 0.004662

0.002449

0.967741935483871 0.008223 0.005981 0.004877 0.004769 0.004658

0.002424
−44−

0.1 0.008764 0.0065818 0.0053257 0.0051127 0.0049682 0.0026855

Average of yearly averages: 0.0025721

Inputs generated by pe4.pl - 8-August-2003

Data used for this run:

Output File: Prallethrin

Metfile: w14737.dvf

PRZM scenario: PAturfC.txt

EXAMS environment file: pond298.exv

Chemical Name: Prallethrin

Description Variable Name Value Units Comments

Molecular weight mwt 300 g/mol

Henry's Law Const. henry 1.72e-3 atm-m^3/mol

Vapor Pressure vapr 3.50e-5 torr

Solubility sol 80.3 mg/L

Kd Kd mg/L

Koc Koc 2533 mg/L

Photolysis half-life kdp 0.57 days Half-life

Aerobic Aquatic Metabolism kbacw 18 days Halfife

Anaerobic Aquatic Metabolism kbacs 37 days Halfife

Aerobic Soil Metabolism asm 9 days Halfife

Hydrolysis: pH 5 0 days Half-life

Hydrolysis: pH 7 0 days Half-life

Hydrolysis: pH 9 4.9 days Half-life

Method: CAM 2 integer See PRZM manual

Incorporation Depth: DEPI 0.0 cm

Application Rate: TAPP 0.0009 kg/ha

Application Efficiency: APPEFF0.025 fraction

Spray Drift DRFT 0.125 fraction of application rate applied to pond

Application Date Date 01-04 dd/mm or dd/mmm or dd-mm or dd-mmm

Interval 1 interval 7 days Set to 0 or delete line for single app.

Interval 2 interval 7 days Set to 0 or delete line for single app.

Interval 3 interval 7 days Set to 0 or delete line for single app.

Interval 4 interval 7 days Set to 0 or delete line for single app.

Interval 5 interval 7 days Set to 0 or delete line for single app.

Interval 6 interval 7 days Set to 0 or delete line for single app.

Interval 7 interval 7 days Set to 0 or delete line for single app.

Interval 8 interval 7 days Set to 0 or delete line for single app.

Interval 9 interval 7 days Set to 0 or delete line for single app.

Interval 10 interval 7 days Set to 0 or delete line for single app.

Interval 11 interval 7 days Set to 0 or delete line for single app.

Interval 12 interval 7 days Set to 0 or delete line for single app.

Interval 13 interval 7 days Set to 0 or delete line for single app.

Interval 14 interval 7 days Set to 0 or delete line for single app.

Interval 15 interval 7 days Set to 0 or delete line for single app.

Interval 16 interval 7 days Set to 0 or delete line for single app.

Interval 17 interval 7 days Set to 0 or delete line for single app.

Interval 18 interval 7 days Set to 0 or delete line for single app.

Interval 19 interval 7 days Set to 0 or delete line for single app.

Interval 20 interval 7 days Set to 0 or delete line for single app.

Interval 21 interval 7 days Set to 0 or delete line for single app.

Interval 22 interval 7 days Set to 0 or delete line for single app.

Interval 23 interval 7 days Set to 0 or delete line for single app.

Interval 24 interval 7 days Set to 0 or delete line for single app.

Interval 25 interval 7 days Set to 0 or delete line for single app.

Record 17: FILTRA

IPSCND 3

UPTKF 0
−45−

Record 18: PLVKRT0

PLDKRT0

FEXTRC 0.5

Flag for Index Res. Run IR Pond

Flag for runoff calc. RUNOFF total none, monthly or total(average of entire run)

Pore water

stored as Prallethrinben.out

Chemical: Prallethrin

PRZM environment: PAturfC.txt modified Satday, 12 October 2002 at 17:27:02

EXAMS environment: pond298.exv modified Thuday, 29 August 2002 at 16:33:30

Metfile: w14737.dvf modified Wedday, 3 July 2002 at 09:06:12

Benthic segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly

1961 0.002277 0.002268 0.002249 0.002225 0.002206 0.00126

1962 0.002644 0.002637 0.00256 0.002389 0.002334 0.001512

1963 0.002658 0.002651 0.002573 0.002399 0.002334 0.00155

1964 0.002424 0.002416 0.002374 0.002298 0.002275 0.001497

1965 0.002464 0.002457 0.002393 0.002281 0.002252 0.001449

1966 0.002392 0.002384 0.00235 0.002263 0.002169 0.001404

1967 0.002593 0.002586 0.002524 0.002405 0.002349 0.001526

1968 0.002506 0.002498 0.002481 0.002419 0.002348 0.001487

1969 0.00255 0.002543 0.002474 0.002342 0.002298 0.001492

1970 0.002352 0.002343 0.00232 0.002273 0.002228 0.001456

1971 0.002376 0.002369 0.002317 0.002267 0.002234 0.00143

1972 0.002385 0.002378 0.002349 0.002293 0.002243 0.001437

1973 0.002293 0.002285 0.002253 0.002182 0.002119 0.001361

1974 0.002566 0.002559 0.002489 0.002339 0.002288 0.001459

1975 0.002492 0.002484 0.002408 0.002257 0.002218 0.001401

1976 0.002433 0.002426 0.002357 0.002222 0.00216 0.001369

1977 0.00232 0.002313 0.002254 0.002144 0.002103 0.001399

1978 0.002515 0.002508 0.002438 0.002298 0.002246 0.001468

1979 0.002405 0.002397 0.002375 0.00234 0.002303 0.001447

1980 0.002222 0.002213 0.002188 0.002126 0.002056 0.001274

1981 0.002431 0.002423 0.002355 0.002209 0.002132 0.001386

1982 0.002556 0.002549 0.002488 0.00237 0.00231 0.001479

1983 0.002287 0.002279 0.00226 0.002206 0.002139 0.001339

1984 0.002407 0.0024 0.002323 0.002169 0.002134 0.001386

1985 0.002336 0.00233 0.002278 0.002193 0.002174 0.00136

1986 0.002432 0.002425 0.00236 0.002232 0.002165 0.001408

1987 0.002465 0.002458 0.002391 0.002248 0.002176 0.001416

1988 0.002317 0.002308 0.00228 0.002201 0.002113 0.001378

1989 0.002376 0.002369 0.002311 0.002221 0.002202 0.001418

1990 0.0024 0.002393 0.00232 0.002171 0.002119 0.001357

Sorted results

Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly

0.032258064516129 0.002658 0.002651 0.002573 0.002419 0.002349

0.00155

0.0645161290322581 0.002644 0.002637 0.00256 0.002405 0.002348

0.001526

0.0967741935483871 0.002593 0.002586 0.002524 0.002399 0.002334

0.001512

0.129032258064516 0.002566 0.002559 0.002489 0.002389 0.002334

0.001497
−46−

0.161290322580645 0.002556 0.002549 0.002488 0.00237 0.00231 0.001492

0.193548387096774 0.00255 0.002543 0.002481 0.002342 0.002303

0.001487

0.225806451612903 0.002515 0.002508 0.002474 0.00234 0.002298

0.001479

0.258064516129032 0.002506 0.002498 0.002438 0.002339 0.002288

0.001468

0.290322580645161 0.002492 0.002484 0.002408 0.002298 0.002275

0.001459

0.32258064516129 0.002465 0.002458 0.002393 0.002298 0.002252

0.001456

0.354838709677419 0.002464 0.002457 0.002391 0.002293 0.002246

0.001449

0.387096774193548 0.002433 0.002426 0.002375 0.002281 0.002243

0.001447

0.419354838709677 0.002432 0.002425 0.002374 0.002273 0.002234

0.001437

0.451612903225806 0.002431 0.002423 0.00236 0.002267 0.002228 0.00143

0.483870967741936 0.002424 0.002416 0.002357 0.002263 0.002218

0.001418

0.516129032258065 0.002407 0.0024 0.002355 0.002257 0.002206

0.001416

0.548387096774194 0.002405 0.002397 0.00235 0.002248 0.002202

0.001408

0.580645161290323 0.0024 0.002393 0.002349 0.002232 0.002176

0.001404

0.612903225806452 0.002392 0.002384 0.002323 0.002225 0.002174

0.001401

0.645161290322581 0.002385 0.002378 0.00232 0.002222 0.002169

0.001399

0.67741935483871 0.002376 0.002369 0.00232 0.002221 0.002165

0.001386

0.709677419354839 0.002376 0.002369 0.002317 0.002209 0.00216

0.001386

0.741935483870968 0.002352 0.002343 0.002311 0.002206 0.002139

0.001378

0.774193548387097 0.002336 0.00233 0.00228 0.002201 0.002134 0.001369

0.806451612903226 0.00232 0.002313 0.002278 0.002193 0.002132

0.001361

0.838709677419355 0.002317 0.002308 0.00226 0.002182 0.002119 0.00136

0.870967741935484 0.002293 0.002285 0.002254 0.002171 0.002119

0.001357

0.903225806451613 0.002287 0.002279 0.002253 0.002169 0.002113

0.001339

0.935483870967742 0.002277 0.002268 0.002249 0.002144 0.002103

0.001274

0.967741935483871 0.002222 0.002213 0.002188 0.002126 0.002056

0.00126

0.1 0.0025903 0.0025833 0.0025205 0.002398 0.002334 0.0015105

Average of yearly averages: 0.00142016666666667

Inputs generated by pe4.pl - 8-August-2003

Data used for this run:

Output File: Prallethrin

Metfile: w14737.dvf

PRZM scenario: PAturfC.txt

EXAMS environment file: pond298.exv
−47−

Chemical Name: Prallethrin

Description Variable Name Value Units Comments

Molecular weight mwt 300 g/mol

Henry's Law Const. henry 1.72e-3 atm-m^3/mol

Vapor Pressure vapr 3.50e-5 torr

Solubility sol 80.3 mg/L

Kd Kd mg/L

Koc Koc 2533 mg/L

Photolysis half-life kdp 0.57 days Half-life

Aerobic Aquatic Metabolism kbacw 18 days Halfife

Anaerobic Aquatic Metabolism kbacs 37 days Halfife

Aerobic Soil Metabolism asm 9 days Halfife

Hydrolysis: pH 5 0 days Half-life

Hydrolysis: pH 7 0 days Half-life

Hydrolysis: pH 9 4.9 days Half-life

Method: CAM 2 integer See PRZM manual

Incorporation Depth: DEPI 0.0 cm

Application Rate: TAPP 0.0009 kg/ha

Application Efficiency: APPEFF0.025 fraction

Spray Drift DRFT 0.125 fraction of application rate applied to pond

Application Date Date 01-04 dd/mm or dd/mmm or dd-mm or dd-mmm

Interval 1 interval 7 days Set to 0 or delete line for single app.

Interval 2 interval 7 days Set to 0 or delete line for single app.

Interval 3 interval 7 days Set to 0 or delete line for single app.

Interval 4 interval 7 days Set to 0 or delete line for single app.

Interval 5 interval 7 days Set to 0 or delete line for single app.

Interval 6 interval 7 days Set to 0 or delete line for single app.

Interval 7 interval 7 days Set to 0 or delete line for single app.

Interval 8 interval 7 days Set to 0 or delete line for single app.

Interval 9 interval 7 days Set to 0 or delete line for single app.

Interval 10 interval 7 days Set to 0 or delete line for single app.

Interval 11 interval 7 days Set to 0 or delete line for single app.

Interval 12 interval 7 days Set to 0 or delete line for single app.

Interval 13 interval 7 days Set to 0 or delete line for single app.

Interval 14 interval 7 days Set to 0 or delete line for single app.

Interval 15 interval 7 days Set to 0 or delete line for single app.

Interval 16 interval 7 days Set to 0 or delete line for single app.

Interval 17 interval 7 days Set to 0 or delete line for single app.

Interval 18 interval 7 days Set to 0 or delete line for single app.

Interval 19 interval 7 days Set to 0 or delete line for single app.

Interval 20 interval 7 days Set to 0 or delete line for single app.

Interval 21 interval 7 days Set to 0 or delete line for single app.

Interval 22 interval 7 days Set to 0 or delete line for single app.

Interval 23 interval 7 days Set to 0 or delete line for single app.

Interval 24 interval 7 days Set to 0 or delete line for single app.

Interval 25 interval 7 days Set to 0 or delete line for single app.

Record 17: FILTRA

IPSCND 3

UPTKF 0

Record 18: PLVKRT0

PLDKRT0

FEXTRC 0.5

Flag for Index Res. Run IR Pond

Flag for runoff calc. RUNOFF total none, monthly or total(average of entire run)
−48−

Appendix C. Data Requirements

Ecological Effects Data Requirements for: Prallethrin

Guideline # Data Requirement

Is Data 

Requirement 

Satisfied?

MRID #’s

Study 

Classification

71-1 Avian Oral LD50 Yes

41321805

41321804

Core

Supplemental

71-2 2 Avian Dietary LC50's

Yes

41321806

41321807

Core

Core

71-4 Avian Reproduction (2 species)

Yes

43773403

43797604

Core

Core

72-1 2 Freshwater Fish LC50's (Tech)

2 Freshwater Fish LC50's (TEP) 

2 Freshwater Fish LC50's

(degradates ketolon and PGLS) 

Yes

Reserved1

Waived

41321809 (Tech)

41321808 (Tech)

Core

Core

72-2 Freshwater Invert. Acute LC50 

(Tech)

Freshwater Invert. Acute LC50 

(TEP)

Freshwater Invert. Acute LC50 

(degradate) 

Yes

Reserved1

Waived

41321810 (Tech) Core

850.1735 Whole Sediment Acute Toxicity 

Freshwater Invertebrates (Tech) No Not applicable Not applicable

72-3(a) Estuarine/Marine Fish LC50 (Tech)

Estuarine/Marine Fish LC50 (TEP)

Estuarine/Marine Fish LC50

(degradate) 

Yes

Reserved1

Waived

444729602 (Tech) Core

72-3(b) Estuarine/Marine Mollusk EC50

(Tech)

Estuarine/Marine Mollusk LC50

(TEP)

Estuarine/Marine Mollusk EC50

(degradate) 

Yes

Reserved1

Waived

44729601 (Tech) Core

72-3(c) Estuarine/Marine Shrimp EC50

(Tech)

Estuarine/Marine Shrimp LC50

(TEP)

Yes

No

Waived

44729603 (Tech) Core
−49−

Ecological Effects Data Requirements for: Prallethrin

Guideline # Data Requirement

Is Data 

Requirement 

Satisfied?

MRID #’s

Study 

Classification

Estuarine/Marine Shrimp EC50

(degradate) 

850.1740 Whole Sediment Acute Toxicity 

Estuarine/Marine Invertebrates 

(Tech)

No

Reserved Not applicable Not applicable

72-4(a) Freshwater Fish Early Life-Stage 

(Tech)

Freshwater Fish Early Life-Stage 

(degradate) 

Yes

Waived

44729604 (Tech) Core

72-4(b) Estuarine Fish Early Life-Stage 

(Tech)

Estuarine Fish Early Life-Stage 

(degradate)

Waived

Waived

Not applicable 

(Tech)

(degradate)

Not applicable

72-4(c) Estuarine Invertebrate Life-Cycle

(Tech)

Estuarine Invertebrate Life-Cycle

(degradate)

Reserved

Waived

Not applicable 

(Tech)

(degradate)

Not applicable

72-4(d) Freshwater Invert Life-Cycle 

(Tech)

Freshwater Invert. Life-Cycle 

(degradate) 

Yes

Waived

44729605 (Tech) Core

72-5 Freshwater Fish Full Life-Cycle

Estuarine Fish Full Life-Cycle

Reserved

Reserved Not applicable Not applicable

81-1 Acute Mammalian LD50 Yes 42030903 Guideline

83-4 2-generation mammalian 

reproduction

Yes 42077006

42178501

Guideline

122-1(a) -Tier I Seed Germ./Seedling Emergence No Not applicable Not applicable

122-1(b) -Tier I Vegetative Vigor No Not applicable Not applicable

122-2 -Tier I Aquatic Plant Growth No Not applicable Not applicable

123-1(a) -Tier II Seed Germ./Seedling Emergence Reserved Not applicable Not applicable

123-1(b) -Tier II Vegetative Vigor Reserved Not applicable Not applicable

123-2 -Tier II Aquatic Plant Growth Reserved Not applicable Not applicable

141-1 Honey Bee Acute Contact (Tech) Yes 41321823 Core
−50−

Ecological Effects Data Requirements for: Prallethrin

Guideline # Data Requirement

Is Data 

Requirement 

Satisfied?

MRID #’s

Study 

Classification

141-2 Honey Bee Residue on Foliage 

(TEP)

No 43749301 Core

1. EFED is seeking TEP testing for the most prallethrin sensitive aquatic surrogate species, mysid shrimp. After evaluating the results of 

mysid shrimp TEP, testing EFED will decide if more TEP testing is needed.

Environmental Fate Data Requirements for: Prallethrin

Guideline # Data Requirement

Is Data 

Requirement 

Satisfied?

MRID #’s

Study 

Classification

161-1 Hydrolysis Y 42838602 C

161-2 Photodegradation in Water Y 43797601 C

161-3 Photodegradation on Soil Y 43797602, 

43797603

C

161-4 Photodegradation in Air N NA W 

162-1 Aerobic Soil Metabolism Y 42838601 C

162-2 Anaerobic Soil Metabolism N N/A N/A

162-3 Anaerobic Aquatic Metabolism Y 44366601, 

44366602

C

162-4 Aerobic Aquatic Metabolism N* 44861001, 

44861002

S*

163-1 Adsorption/Desorption Y 42810801 S**

163-2 Laboratory Volatility N NA W 

163-3 Field Volatility N NA W 

164-1 Terrestrial Field Dissipation N NA W

164-2 Aquatic Field Dissipation N NA W

165-4 Accumulation in Fish/

Bioconcentration

Y 42810802, 

43758001

C

C=Core; S=Supplemental; U=Unnaceptable; W=Waived; N/A=Not Applicable; NA=Not Available

* The study will not be upgraded to acceptable, and will remain supplemental. Should the registrant wish to add uses of this chemical, the EFED 

will reassess the data requirement. **No additional data are required